A powder material sieving and mixing device

Abstract

The utility model relates to the technical field of screening device, especially a kind of powder material screening sample mixing device, including machine body, feed inlet, discharge port, screening device is arranged between the feed inlet and discharge port, the powder screening device includes two sample mixing channels and dust suction assembly between the feed inlet and discharge port.The utility model realizes the quick screening sample mixing of powder material by setting screening component, dust generated in the screening sample mixing process is adsorbed and collected by dust suction component, the process is fully automated, reduces the workload of artificial, avoids producing dust pollution working environment.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, and in particular to a screening and mixing device for powdered materials. Background Technology

[0002] In the cement plant production process, from raw material intake to semi-finished products and finished cement output, the powdery materials involved, such as fly ash, raw meal powder, mill-exit cement, and finished cement, must be sieved (to remove impurities) and mixed before testing to ensure sample homogeneity. Currently, the cement industry mostly uses manual sieving with a 300mm diameter, 0.9mm square-hole sieve. This method has several problems: first, it generates a lot of dust, which is harmful to the health of operators; second, it is labor-intensive, requiring 2-3 people to work together for the sieving and mixing process, resulting in low efficiency; and third, manual mixing is often uneven, leading to unrepresentative test samples and affecting the accuracy of subsequent cement quality testing.

[0003] Based on the above-mentioned technical problems, this utility model proposes a powder material screening and mixing device. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a powder material screening and mixing device to solve the above-mentioned technical problems.

[0005] This utility model is achieved through the following technical solution: a powder material screening and mixing device, including a machine body, an inlet, and an outlet. A screen and a dust collection component are arranged between the inlet and the outlet. The screen is installed at an inclination below the inlet. Two mixing channels are arranged below the screen. The mixing channels are used to pass oversize and undersize materials respectively. The sidewalls of the mixing channels are inclined, allowing materials to roll and bounce irregularly along the inclined sidewalls. The dust collection component is located at the top of the machine body to absorb dust.

[0006] Furthermore, a material-pushing device is provided below the feed inlet. The material-pushing device is installed above the screen and can push the material on the screen surface upward.

[0007] Furthermore, the feeding device includes a transmission device and a feeding plate. The transmission device is arranged parallel to the screen and connected to the side wall of the machine body. The transmission device is fixedly connected to both ends of the feeding plate, and the connection position is above the central axis of the feeding plate.

[0008] Furthermore, the material-pushing plate is installed between the screen and the transmission device, and the material-pushing plate is perpendicular to the screen.

[0009] Furthermore, the material-pushing plate contacts the screen when it moves upward, and disengages from the screen when it moves downward.

[0010] Furthermore, a receiving box is provided below the mixing channel, and the receiving box can be pulled out along the mixing channel.

[0011] Furthermore, the dust collection component is located at the top of the machine body, and the dust collection component includes a strip-shaped dust collection port located inside the machine body.

[0012] The beneficial effects of this utility model are as follows: A powder material screening and mixing device includes a machine body, an inlet, and an outlet. A screen is installed between the inlet and the outlet, and the screen is installed at an inclination below the inlet. Two mixing channels are provided below the screen, which are used for the oversize and undersize materials, respectively. The sidewalls of the mixing channels are inclined, allowing the material to roll and bounce irregularly along the inclined sidewalls during screening and mixing. By using the inclined screen installed inside the machine body to screen and mix the material, employees only need to pour the material into the machine body through the inlet to quickly complete the screening and mixing, which is convenient and reduces the workload of employees. By installing a dust collection component above the machine body to absorb the dust generated during the screening and mixing process, dust can be effectively avoided. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the main sectional view of this utility model; Figure 3 This is a schematic diagram of the main sectional view of Example 2; Figure 4 This is a schematic diagram of the material feeding device. Figure 5 This is a schematic diagram showing the return status of the feeding plate; Figure 6 This is a schematic diagram of the material feeding plate structure.

[0014] In the diagram: 1. Machine body; 2. Dust collection fan; 21. Dust suction port; 3. Vibrating motor; 4. Feed inlet; 5. Screen; 51. Spring; 52. Shaft; 6. Chain; 61. Sprocket; 62. Driven wheel; 63. Feeding plate; 7. Handle; 8. Channel 1; 81. Collection box 1; 9. Channel 2; 91. Collection box 2. Detailed Implementation

[0015] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] 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 scope of protection of the present utility model.

[0017] Example 1 like Figure 1-2 As shown, a powdered material screening and mixing device includes: a body 1, with an inlet 4 at the top and an outlet at the bottom; a screen 5 installed directly below the inlet 4; the lower end of the screen 5 connected to the body 1 via a rotating shaft; the upper end of the screen 5 fixed to the body via a spring 51; and the sides and lower edge of the screen 5 in contact with the body, preventing material from falling through the gap between the screen 5 and the body. Below the screen 5 are two mixing channels, channel 8 and channel 9, respectively. The screen 5 is placed at an angle, parallel to the inclined top plate of the body, and is made of metal. The vibrating motor 3 vibrates the screen 5 to screen and mix the material. During the screening and mixing process, the material continuously enters the device from the feed inlet 4 and falls onto the screen 5. The undersize material enters the first channel 8 through the screen 5 for mixing, while the oversize material rolls on the screen surface and enters the second channel 9 for mixing. After entering the mixing channel from the screen 5, the material falls randomly onto the side wall of the mixing channel, continuously tumbling and bouncing on the side wall to mix the material evenly. Finally, the material enters the first collection box 81 and the second collection box 91 from the mixing channel for collection.

[0018] There is a dust collection component at the top of the machine. When using the device, turn on the dust collection fan 2. The dust collection fan 2 generates a strong suction through the dust collection port 21, so that the airflow inside the device is from the feed port to the dust collection port. This ensures that the dust generated during the entire screening and mixing process from feeding to discharging will be collected by the dust collection component, preventing the dust from spreading. After screening and mixing is completed, the material can be taken out by pulling the handle 7.

[0019] Example 2 like Figure 2-6As shown, a powder material screening and mixing device differs from Embodiment 1 in that, to further enhance the screening and mixing effect, a transmission device is installed above the screen 5. The transmission device is installed on the side walls of the machine body on both sides of the screen. The transmission device can be a metal chain, namely chain 6, which is parallel to the screen 5. The two ends of the chain 6 have a drive sprocket 61 and a driven sprocket 62. The drive sprocket 61 is connected to an external motor through a transmission shaft. A material-pushing plate 63 is welded between the two chains 6. Multiple material-pushing plates 63 are welded at equal intervals on the chain 6. The material-pushing plate 63 is a hollow frame, and a screen with a mesh size slightly larger than that of the screen 5 is installed on its surface. The material-pushing plate 63 is installed perpendicular to the screen and can contact the screen 5. During the screening and mixing process, the material can be blocked by the material-pushing plate 63, thereby prolonging the screening time of the material on the screen. In addition, the mixing effect of the material is enhanced as the material-pushing plate 63 pushes the material upward.

[0020] During operation, the external motor drives the sprocket 61 to rotate. The sprocket 61 drives the chain 6 to move the material-pushing plate 63 back and forth along the upper surface of the screen 5. When moving upward, the bottom of the material-pushing plate 63 is in close contact with the screen 5, scraping off the impurities adhering to the surface of the screen 5 to prevent clogging of the screen holes. As the material-pushing plate 63 moves upward, it continuously pushes the material on the screen surface upward, extending the material screening time and enhancing the mixing effect of the material. When it reaches the sprocket 61, the material-pushing plate 63 deflects upward. When the material-pushing plate 63 returns, it moves away from the screen surface. The distance between the material-pushing plate 63 and the screen 5 is greater than the height of the material-pushing plate 63. Therefore, during this process, there is no interference between each material-pushing plate.

[0021] like Figure 3-6 As shown, the connecting parts at both ends of the feed plate 63 are the welding positions between the feed plate 63 and the chain 6. When the feed plate 63 moves downward along the screen, it rotates 180 degrees compared to when it moves upward. The feed plate 63 moves from below the center line of the sprocket to above the center line of the sprocket. At this position, the feed plate 63 is away from the screen 5, and the feed plate 63 is no longer in contact with the screen 5.

[0022] After the screening and mixing process is completed, turn off the vibration motor and the external drive motor. The dust collection fan continues to be powered on for a period of time to collect the dust inside the device. After the dust is completely collected, open the collection box to collect the material.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A powdered material screening and mixing device, comprising a body, an inlet, and an outlet, characterized in that, A screen and a dust collection component are provided between the feed inlet and the discharge outlet. The dust collection component is used to absorb dust. The screen is installed at an angle below the feed inlet. Two mixing channels are provided below the screen. The mixing channels are used to pass oversize and undersize materials respectively. The sidewalls of the mixing channels are inclined, and the materials can roll and bounce irregularly along the inclined sidewalls.

2. The powdered material screening and mixing device according to claim 1, characterized in that, A material feeding device is provided below the feed inlet. The material feeding device is installed above the screen and can push the material on the screen surface upward.

3. The powdered material screening and mixing device according to claim 2, characterized in that, The feeding device includes a transmission device and a feeding plate. The transmission device is arranged parallel to the screen and is rotatably connected to the side wall of the machine body.

4. The powdered material screening and mixing device according to claim 3, characterized in that, The two ends of the feeding plate are fixedly connected to the transmission device, and the connection position is the upper half of the feeding plate.

5. The powdered material screening and mixing device according to claim 3, characterized in that, The material-pulling plate is installed between the screen and the transmission device, and the material-pulling plate is perpendicular to the screen.

6. The powdered material screening and mixing device according to claim 3, characterized in that, When the material-pushing plate moves upward, it contacts the screen; when the material-pushing plate moves downward, it disengages from the screen.

7. The powdered material screening and mixing device according to claim 1, characterized in that, A receiving box is provided below the mixing channel, and the receiving box can be pulled out along the mixing channel.

8. The powdered material screening and mixing device according to claim 1, characterized in that, The dust collection component is located at the top of the machine body, and the dust collection component includes a strip-shaped dust collection port located inside the machine body.

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