Strip-shaped drum screen

Abstract

The invention discloses a strip-shaped drum screen which comprises a rack, a main shaft driven by a driving device to rotate is installed on the rack, the main shaft is obliquely arranged, a drum assembly capable of screening materials is arranged on the main shaft in a sleeved mode, and a cylindrical screen capable of rotating along with the main shaft is arranged in the drum assembly. A steel wire cleaning device capable of cleaning the screen is arranged outside the roller assembly, and a feeding device used for feeding materials into the roller assembly, a discharging device used for collecting screened materials and a waste material device used for collecting waste materials are installed on the machine frame. The device has the advantages of being high in automation degree, capable of saving cost, high in screening efficiency, high in applicability and the like.

Description

Technical Field

[0001] The invention relates to the technical field of screening equipment, in particular to a strip drum screen. Background Art

[0002] Currently, ceramsite is widely used in the building materials, chemical, cement, and other fields due to its excellent thermal insulation, heat insulation, and fire resistance. Ceramsite production can be made from a variety of raw materials, such as bauxite, clay, shale, and silt. To ensure the quality and density of ceramsite production, the raw materials must first be screened to select fine particles that meet the requirements before subsequent production. However, in the actual screening process, the screening and collection of earthen materials is relatively difficult. The materials are prone to splashing and clogging the screen, resulting in low screening efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a strip drum screen which improves screening efficiency, facilitates collection and is not prone to clogging of the screen.

[0004] In order to solve the above technical problems, the present invention includes a frame, and its structural characteristics are: a main shaft driven by a driving device is installed on the frame, the main shaft is arranged at an angle, a roller assembly capable of screening materials is mounted on the main shaft, a cylindrical screen capable of rotating with the main shaft is provided inside the roller assembly, a steel wire cleaning device capable of cleaning the screen is provided outside the roller assembly, a feeding device for feeding materials into the roller assembly, a discharging device for collecting screened materials, and a waste device for collecting waste are installed on the frame.

[0005] After adopting the above structure, a main shaft with an inclined setting is installed on the frame, and a roller assembly is installed on the main shaft. When the main shaft is inclined, the roller assembly is also inclined. The driving device drives the main shaft to rotate and drives the roller assembly to rotate at the same time. The roller assembly is inclined, and a height difference is formed at both ends. The material enters the roller assembly through the feeding device and slides from the high end to the low end of the roller assembly due to gravity. At this time, the driving device drives the roller assembly to rotate, and the material passes through the gaps of the cylindrical screen in turn. The material that meets the required size will pass through the screen. The material falls through the gap and slides from high to low to the lower end of the drum assembly. After the drum assembly rolls and is screened multiple times by the screen, the material is screened out to the greatest extent. The screened material falls downward and is collected by the discharging device. At this time, only waste material is left in the drum assembly. The waste material slides from the lower end of the drum assembly and enters the waste device, which is collected by the waste device. When the material blocks the screen, the wire cleaning device can clean the screen, further improving the screening efficiency, facilitating the automation process, and facilitating the collection of materials.

[0006] The drum assembly includes a drum head frame, a drum middle frame and a drum tail frame. The outer contour diameters of the drum head frame, the drum middle frame and the drum tail frame are the same, and the drum middle frame is evenly distributed between the drum head frame and the drum tail frame. The cylindrical screen is mounted on the drum head frame, the drum middle frame and the drum tail frame. The screen is supported by the drum head frame, the drum middle frame and the drum tail frame to ensure that the shape of the screen remains consistent, thereby avoiding deformation of the screen during the screening process, affecting the screening efficiency and quality. At the same time, the combination of the drum head frame, the drum middle frame, the drum tail frame and the outer screen is adopted to facilitate the disassembly and adjustment of the screen. When different materials need to be screened, only the screen needs to be replaced, and the entire drum assembly does not need to be replaced. At the same time, the positions of the drum head frame, the drum middle frame and the drum tail frame on the main shaft can be changed as needed to adapt to different screens and then to the screening process of different materials, thereby improving the applicability of the device.

[0007] The roller head frame, roller middle frame and roller tail frame all include a positioning plate mounted on the main shaft, and the positioning plate is provided with a plurality of webs extending along the radial direction, and the plurality of webs are evenly arranged around the positioning plate, and an outer ring is provided outside the web. The diameters of the outer rings of the roller head frame, roller middle frame and roller tail frame are consistent, and the positions of the roller head frame, roller middle frame and roller tail frame on the main shaft are determined by the positioning plate, and then the roller head frame, roller middle frame and roller tail frame are respectively fixed to the main shaft with webs arranged radially to support the outer ring, and the screen is fixed to the outer rings of the roller head frame, roller middle frame and roller tail frame, and the screen is fixed by the web and the appearance to support the screen.

[0008] The end of the drum head frame used for feeding is provided with a plurality of guide plates, and the guide plates are arranged at an angle, and the material slides along the guide plates into the drum assembly, thereby improving the screening efficiency.

[0009] The frame is provided with an outer cover that can cover the roller assembly, the outer cover is provided with a feed baffle at one end close to the feed end of the roller assembly, and a discharge tail plate at one end close to the discharge end of the roller assembly, the feed device is installed on the discharge tail plate, and the waste device is installed on the discharge tail plate. The outer cover covers the outside of the roller assembly, and when materials fly, they are blocked by the outer cover from falling, which facilitates the collection of materials and avoids the scattering of materials. At the same time, the feed baffle and the discharge tail plate facilitate the installation and fixation of the feed device and the waste device, and facilitate the production and installation of this device.

[0010] The feeding device is a feeding pipe with an open upper end. The feeding pipe is inclined at the pipe wall on the side away from the roller assembly. The discharge port of the feeding pipe faces the roller assembly. The inclined pipe wall acts as a guide. When the material slides along the pipe wall due to gravity, it enters the roller assembly along the pipe wall, realizing the loading of the material, which is simple and convenient while improving the loading efficiency.

[0011] The wire cleaning device includes a rotatable cleaning shaft, on which a wire brush is mounted, the axis of the cleaning shaft being parallel to the axis of the main shaft, the wire brush being tangent to the roller assembly, and the cleaning shaft being parallel to the main shaft, ensuring that the wire brush and the screen of the roller assembly are in contact and tangent from the feed end to the discharge end. When the roller assembly rolls along the shaft, it rubs against the wire brush, and the wire brush cleans the tangent part of the roller assembly. At the same time, the roller assembly gives the wire brush a rotational force, and the rotation of the wire brush can ensure that the wire penetrates into every part of the screen, cleans the screen, and pushes out the material blocked in the screen, thereby ensuring the subsequent cleaning efficiency of the screen.

[0012] In summary, the present invention has the advantages of high degree of automation, cost saving, high screening efficiency, strong applicability, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure from the left (feeding device and feed baffle are not shown); Figure 3 for Figure 1 Schematic diagram of the structure from a top view (feeding device not shown); Figure 4 is a structural diagram of the main shaft and roller assembly; Figure 5 for Figure 4 Schematic diagram of the structure from the left; Figure 6 The structural diagram of the main axis; Figure 7 It is a structural diagram of the roller head frame; Figure 8 To follow Figure 7 Schematic diagram of the structure of the middle BB in section; Figure 9 To follow Figure 8 Schematic diagram of the structure cut along the AA line; Figure 10 It is a structural diagram of the roller middle frame and the roller tail frame; Figure 11 It is a structural diagram of the feeding device and the feeding baffle; Figure 12 for Figure 11 Schematic diagram of the structure cut along the CC line. DETAILED DESCRIPTION

[0014] like Figure 1As shown in FIG, the present invention is a strip drum screen, which includes a frame 1, on which a screening device driven to rotate by a driving device is mounted. The screening device is also tilted, with the upward end being the feed end and the downward end being the discharge end. For ease of description, Figure 1 The left side is left, and the right side is right. A feeding device 61, a discharging device 62 and a waste device 63 are installed on the frame 1. The feeding device 61 is located at the feeding end of the screening device. The discharging device 62 is located at the lower end of the screening device, and the waste device 63 is located at the discharging end of the screening device. After the screening device rotates, the material can be screened out according to the diameter. When the material needs to be screened, the material is fed into the screening device through the feeding device 61, and the required material is screened out through the screening device, and the remaining material enters the waste device 63 from the discharging end of the screening device, and is then discharged from the waste device 63. The screening of materials such as mud and sand is completed by the screening device. The screening device can be replaced, and different screening devices can be used to screen mud and sand of different sizes to meet actual production needs of different sizes.

[0015] like Figure 1-10 As shown, the screening device includes a main shaft 3 driven by a drive mechanism. A roller assembly 4 is mounted on the main shaft 3. The roller assembly 4 comprises a roller head frame 41 at the feed end and a roller tail frame 43 at the discharge end. An intermediate roller frame 42 is positioned between the roller head frame 41 and the roller tail frame 43. A screen 44 is sheathed around the roller head frame 41, the intermediate roller frame 42, and the roller tail frame 43. The screen 44 is covered with stainless steel wires arranged parallel to the axis and with uniform spacing. Different screens 44 allow for different diameters of the screened material, allowing the device to be more adaptable by changing the screen 44.

[0016] like Figure 1-4 As shown in Figures 6 and 7, the drive device is located on the relatively higher side of the roller assembly 4. The drive device is a servo motor, and the output end of the motor is fixed to the main shaft 3 through a coupling. Two bearing seats are installed on the frame 1, and the main shaft 3 is installed in the bearing seats. The position of the main shaft 3 is fixed by the bearing seats, and the position of the rolling assembly is fixed by the bearing seats. The main shaft 3 includes a shaft head 31 and a shaft tail 32, and the shaft head 31 and the shaft tail 32 are connected by a connecting tube 33. The shaft head 31 is a stepped tube. A pin hole is provided on the left end of the shaft head 31, which is connected to the drive device by a fixing pin. The middle section of the shaft head 31 has the largest diameter, and the stepped setting can play a role in rapid positioning and facilitate installation. Similarly, the shaft tail 32 is also a stepped tube. The diameter of the rightmost end of the shaft head 31 is the same as the diameter of the leftmost end of the shaft tail 32, and the same as the diameter of the center hole of the connecting tube 33, which facilitates the fitting of the connecting tube 33 on the shaft head 31 and the shaft tail 32 to form the main shaft 3. The adoption method facilitates the installation of the main shaft 3. At the same time, the length of the main shaft 3 can be changed by only changing the connecting pipe 33, so that it is suitable for screens 44 of different lengths and suitable for different usage scenarios, which is convenient for installation and transportation and improves the applicability of the device.

[0017] like Figure 1-10 As shown, the roller head frame 41 includes an outer ring 47 for mounting the screen 44 and a positioning plate that fits over the main shaft 3. The positioning plate is a circular ring that fits over the main shaft 3 and determines the mounting position of the roller head frame 41. Between the outer ring 47 and the positioning plate are multiple strips 46, each uniformly arranged radially. These strips 46 support the outer ring 47 and prevent deformation caused by material impact. A retaining ring is located on the left side of the outer ring 47 to prevent material from being ejected from the left side, thereby ensuring efficient screening. Multiple guide plates 48 are located radially inwardly of the outer ring 47, and are arranged at an angle. When material enters the roller head frame 41 from the feed device 61, the guide plates 48 guide the material inward, allowing it to enter the screen 44 for screening. In this embodiment, six guide plates 48 are provided, evenly spaced around the outer ring 47. Correspondingly, the intermediate drum frame 42 and the tail drum frame 43 also include an outer ring 47, a web 46, and a positioning plate. The intermediate drum frame 42 ensures the stability of the screen 44 located in the center, preventing material from impacting the screen 44 during rotation and causing deformation. In this embodiment, two intermediate drum frames 42 are provided, evenly distributed between the head drum frame 41 and the tail drum frame 43. The two drum support frames ensure support for the screen 44, preventing deformation and ensuring screening efficiency and quality.

[0018] like Figure 1-3 As shown, the drum assembly 4 is provided with an outer cover 2, which securely covers the drum assembly 4. Fine dust particles ejected by the drum assembly 4 during its rotation are trapped by the outer cover 2, preventing dust from flying. The outer cover 2 blocks the material from falling through the discharge device 62, facilitating collection and cleaning. To prevent material from accumulating in the gaps of the screen 44, a wire cleaning device 5 is installed within the drum assembly 4. The wire cleaning device 5 is mounted within the outer cover 2. The wire cleaning device 5 includes a cleaning shaft 51 arranged parallel to the main shaft 3. A wire brush 52 is sheathed around the cleaning shaft 51, and the outer contour of the wire brush 52 is cylindrical. The cleaning shaft 51 is rotatable. The wire brush 52 is tangential to the drum assembly 4. As the drum assembly 4 rotates, friction between the surface of the screen 44 and the wire brush 52 occurs, scraping away dirt from the gaps in the screen 44 and cleaning the screen 44. The cleaning shaft 51 is installed in the bearing seat, so that the cleaning shaft 51 can rotate along the axis. When the drum assembly 4 rotates, the friction force drives the wire brush 52 to rotate. The wire brush 52 evenly cleans the gaps in the screen 44 to ensure the stability of the screening of the screen 44. Congestion is avoided, which causes some mud to not be screened out, resulting in waste of fertilizer, and the screening efficiency is guaranteed. In this embodiment, the tangent point between the wire brush 52 and the drum assembly 4 is located on the upper side of the drum assembly 4. After being cleaned, the mud falls downward, and the wire brush 52 will not cause any obstruction to the mud.

[0019] like Figure 1-3 As shown in Figures 11 and 12, the outer cover 2 provided on the outside of the roller assembly 4 is connected to the frame 1 and covers the roller assembly 4. A feed baffle 21 is provided at the front end of the outer cover 2 and is arranged radially along the main shaft 3. A discharge tail plate 22 is provided at the rear end of the outer cover 2 and is arranged radially along the main shaft 3. There is a gap between the discharge tail plate 22 and the rear end of the roller assembly 4. A through hole is provided in the feed baffle 21, and the through hole is located on the main shaft 3. The feeding device 61 is connected to the feed baffle 21 through the through hole. The feeding device 61 is a hollow tube. The feeding device 61 is provided with a feed port and a discharge port. The feed port is provided at the uppermost end of the feeding device 61 and opens upward. The discharge port is located at the right end of the feeding device 61 and is aligned with the front frame of the roller assembly 4. The left end of the tube wall of the feeding device 61 is tilted so that after materials such as mud and sand enter the feeding device 61 through the feed port, they slide along the feeding device 61 and enter the roller assembly 4. The rotation of the drum assembly 4 screens materials that meet size requirements. An axial through-hole is provided on the left end of the tube wall of the feed device 61. The through-hole has the same diameter as the main shaft 3, facilitating the installation of the feed device 61 onto the main shaft 3. A sealing cover is mounted on the main shaft 3. The right end of the sealing cover fits against the feed device 61, sealing the through-hole of the feed device 61 and preventing material from leaking out of the through-hole. The discharge device 62 is located on the lower side of the drum assembly 4. The discharge device 62 includes two discharge plates arranged in a front-to-rear relationship, with the distance between the two discharge plates gradually decreasing from top to bottom. After being screened by the drum assembly 4 and falling, the material falls onto the discharge plates and slides along them, facilitating the handling of the material. The waste device 63 is located to the right of the discharge device 62, and is therefore located to the right of the drum tail plate. The waste device 63 is a box with upper and lower openings, and the material falls down from the upper opening to the lower opening. After the material is rotated and screened by the drum assembly 4, waste materials that do not meet the required size will not leak from the screen 44. The waste materials follow the drum assembly 4 into the space between the drum assembly 4 and the discharge tail plate 22, and then slide downward due to gravity into the waste device 63, sliding downward along the waste device 63 to facilitate the collection of the waste materials.

Claims

1. A strip drum screen comprising a frame (1), characterized in that: The frame (1) is provided with a main shaft (3) driven to rotate by a driving device, the main shaft (3) is arranged at an angle, and a roller assembly (4) capable of screening materials is mounted on the main shaft (3), a cylindrical screen (44) capable of rotating along with the main shaft (3) is provided inside the roller assembly (4), and a steel wire cleaning device (5) capable of cleaning the screen (44) is provided outside the roller assembly (4), and a feeding device (61) for feeding materials into the roller assembly (4), a discharging device (62) for collecting screened materials, and a waste device (63) for collecting waste materials are mounted on the frame (1).

2. The strip drum screen according to claim 1, characterized in that: The roller assembly (4) includes a roller head frame (41), a roller middle frame (42) and a roller tail frame (43). The outer contour diameters of the roller head frame (41), the roller middle frame (42) and the roller tail frame (43) are the same. The roller middle frame (42) is evenly distributed between the roller head frame (41) and the roller tail frame (43). The cylindrical screen (44) is sleeved on the roller head frame (41), the roller middle frame (42) and the roller tail frame (43).

3. The strip drum screen according to claim 2, characterized in that: The roller head frame (41), the roller middle frame (42) and the roller tail frame (43) all include a positioning plate (45) mounted on the main shaft (3). The positioning plate (45) is provided with a plurality of radially extending webs (46). The plurality of webs (46) are evenly arranged around the positioning plate (45). An outer ring (47) is provided outside the webs (46). The outer rings (47) of the roller head frame (41), the roller middle frame (42) and the roller tail frame (43) have the same diameter.

4. The strip drum screen according to claim 2, wherein: One end of the roller head frame (41) used for feeding is provided with a plurality of material guide plates (48), and the material guide plates (48) are arranged at an angle.

5. The strip drum screen according to claim 1, wherein: An outer cover (2) capable of covering the roller assembly (4) is mounted on the frame (1); a feed baffle (21) is provided at one end of the outer cover (2) close to the feed end of the roller assembly (4); and a discharge tail plate (22) is provided at one end of the outer cover (2) close to the discharge end of the roller assembly (4); the feed device (61) is mounted on the discharge tail plate (22); and the waste device (63) is mounted on the discharge tail plate (22).

6. The strip drum screen according to claim 1, characterized in that: The feeding device (61) is a feeding pipe with an open upper end. The pipe wall of the feeding pipe is tilted away from the roller assembly (4), and the discharge port of the feeding pipe faces the roller assembly (4).

7. The strip drum screen according to claim 1, characterized in that: The discharging device (62) is located at the lower end of the roller assembly (4), and the waste device (63) is located at the lower end of the roller assembly (4).

8. The strip drum screen according to claim 1, characterized in that: The steel wire cleaning device (5) comprises a rotatable cleaning shaft (51), a steel wire brush (52) is mounted on the cleaning shaft (51), the axis of the cleaning shaft (51) is parallel to the axis of the main shaft (3), and the steel wire brush (52) is tangent to the roller assembly (4).

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