Mortar raw material screening device

Abstract

The utility model discloses a mortar raw material screening device which comprises a machine frame and a protection box, a rotating cylinder is arranged in the protection box, an inner cylinder is arranged in the rotating cylinder, screening holes are formed in the surface of the inner cylinder, a feeding assembly is arranged at one end of the rotating cylinder and comprises a feeding hopper, and the inner diameter of the rotating cylinder and the inner diameter of the inner cylinder are gradually increased in the direction away from the feeding hopper. A box body is arranged at the other end of the rotary drum, and a discharging assembly is arranged in the box body; a mounting opening is formed in the right side of the box body, a cover plate is mounted at the mounting opening through bolts, a supporting rod is arranged on one side of the cover plate, and a brush is arranged on the part, extending into the inner cylinder, of the supporting rod; a dust removal assembly is installed on the feeding hopper, a conveying assembly is arranged at the bottom of an inner cavity of the feeding hopper, a feeding pipe is arranged on the right side of the bottom of the conveying assembly, and one end of the feeding pipe extends into the inner cylinder. Mortar raw materials are input through the feeding assembly, screening of the mortar raw materials is achieved through synchronous rotation of the rotary drum and the inner drum, blocking of screening holes is reduced, and the screening efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of mortar production technology, and in particular to a mortar raw material screening device. Background Technology

[0002] Dry-mix mortar refers to a granular or powdery material made by physically mixing dried and screened aggregates (such as quartz sand), inorganic cementitious materials (such as cement), and additives (such as polymers) in a certain proportion. It is transported to the construction site in bagged or bulk form and can be used directly after mixing with water. It is also known as dry mortar powder, dry-mixed mortar, or dry-mixed powder; some building adhesives also fall into this category. Dry-mix mortar plays a crucial role in the construction industry by providing thin layers for bonding, padding, protection, and decoration. It is widely used in building and decoration projects, compatible with various new wall materials, and plays an indispensable role in modern construction. Mortar raw materials typically contain coarse and fine aggregates, and admixtures and additives may be added depending on performance requirements. Before production or mixing, mortar raw materials are usually screened to remove impurities, large pieces, and other materials that affect performance, ensuring uniform material distribution and better performance.

[0003] Currently, when screening mortar raw materials using a screening device, the workers first pour the mortar raw materials into the screening box. One side of the screening box is set with an opening to facilitate the workers pouring the mortar raw materials into the screening box, and the other side is equipped with a discharge pipe. In addition, a filter screen is set inside the screening box. The mortar raw materials fall onto the filter screen and are screened by the reciprocating motion of the filter screen. For example, patent document CN211463848U discloses a raw material screening device for mortar production, comprising: a screening box; two chutes; the two chutes are respectively fixedly installed on both sides of the screening box and are connected to the screening box; a filter assembly, which is disposed in the screening box and the two chutes and slidably connected to the two chutes; a fixing block, which is disposed at the bottom of the filter assembly; and a drive mechanism, which includes a motor, a rotating rod, a swing rod, and a connecting rod. The motor is disposed on one side of the screening box, the rotating rod is fixedly installed on the output shaft of the motor, and the swing rod is rotatably installed on the top of the rotating rod. When screening mortar raw materials, the raw material screening device for mortar production provided by this solution starts the motor, which drives the rotating rod to rotate. The rotation of the rotating rod drives the swing rod to reciprocate and swing. The reciprocating movement of the swing rod drives the connecting rod to reciprocate. The reciprocating movement of the connecting rod drives the filter assembly to reciprocate through the fixing block, thereby screening the mortar raw materials on the filter assembly.

[0004] However, the aforementioned screening device still has the following shortcomings: the filter screen is located inside the housing, and if it is not cleaned after long-term use, the filter screen will become clogged. Once clogged, it is difficult to clean and affects screening efficiency. To address the problem of some mortar materials easily getting stuck in the filter screen, a method is used to knock the filter screen down with a heavy object after the machine is stopped. However, this manual knocking method easily causes dents in the screen and consumes manpower, affecting efficiency. Therefore, it is necessary to provide a mortar material screening device to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the problems mentioned in the background art, this utility model proposes a mortar raw material screening device. The device inputs mortar raw materials through a feeding component, and the rotating drum and inner drum rotate synchronously under the drive of the driving component, thereby achieving the screening of mortar raw materials, reducing screen hole clogging, and improving the screening efficiency of the device.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A mortar raw material screening device includes a frame and a protective box fixedly mounted above the frame. A rotating drum is installed inside the protective box, penetrating the box and extending out from both ends. An inner cylinder is installed inside the rotating drum, with sieve holes on its surface. A feeding assembly is installed at one end of the rotating drum, including a feeding hopper fixed to one side of the frame. The inner diameters of both the rotating drum and the inner cylinder gradually increase away from the feeding hopper. A box is installed at the other end of the rotating drum, with the rotating drum passing through the outer wall of the box and extending into... Inside the box, a discharge assembly is installed. An installation port is opened on the right side of the box, and a cover plate is installed at the installation port by bolts. A support rod is installed on the side of the cover plate near the box. The body of the support rod is parallel to the inner wall of the inner cylinder, and a brush is installed on the part of the support rod that extends into the inner cylinder. A dust removal assembly is installed on the feed hopper, and a conveying assembly is installed at the bottom of the inner cavity of the feed hopper. A feeding pipe is installed on the right side of the bottom of the conveying assembly. The end of the feeding pipe away from the feed hopper passes through the rotating drum and the outer wall of the inner cylinder and extends into the inner cylinder.

[0008] Preferably, the discharge assembly includes a discharge pipe one and a discharge pipe two disposed on the right side of the discharge pipe one. The discharge pipe one is located below the end of the rotating drum away from the feed hopper, and the discharge pipe two is located below the end of the inner cylinder away from the feed hopper.

[0009] Preferably, the ends of both the rotating drum and the inner drum away from the feed hopper are set to be open, and the length of the inner drum is not less than the length of the rotating drum.

[0010] Preferably, the dust removal component includes a vacuum cleaner, which is installed on the upper part of the frame at the right side of the feed hopper. The input end of the vacuum cleaner is connected to a conical hood, which is fixedly connected to the rear of the feed hopper and communicates with the inside of the feed hopper. The output end of the vacuum cleaner is provided with a dust collection bag.

[0011] Preferably, the conveying assembly includes a conveying bin, a rotating shaft, and a motor. The rotating shaft is horizontally disposed inside the conveying bin, with its right end rotatably mounted on the right side wall of the conveying bin. The rotating shaft is equipped with helical blades. The motor is located on the left side of the feed hopper. The left end of the rotating shaft passes through the conveying bin and the feed hopper in sequence and is connected to the output shaft of the motor via a coupling. A conveying inlet is provided on the left side of the top of the conveying bin. The right side of the bottom of the conveying bin is connected to the feeding pipe. The end of the feeding pipe near the feed hopper passes through the feed hopper and the outer wall of the conveying bin and is connected to the conveying bin.

[0012] Preferably, the upper end of the frame is provided with two sets of rollers, which are respectively placed at both ends of the frame. The rotating drum is fitted with annular guide rails at the two sets of rollers. There are two rollers in each set, and the rollers abut against the annular guide rails. A toothed ring is fitted on the rotating drum, and the toothed ring is located between the two annular guide rails. A drive assembly is provided on one side of the frame corresponding to the rotating drum.

[0013] Preferably, the drive assembly includes a second motor and a reducer. The output end of the second motor is connected to the reducer. The reducer and the second motor are fixedly mounted on the frame. A gear is fixedly mounted on the output shaft of the reducer, and the gear meshes with the gear ring.

[0014] The beneficial effects of this utility model are as follows:

[0015] In use, mortar raw materials are fed into the feed hopper and then enter the conveying bin through the conveying inlet. Motor 1 is started, and the rotating shaft drives the spiral blades to rotate, ensuring an equal amount of mortar raw materials are conveyed to the feeding pipe and then into the inner cylinder. Motor 2 is started, and the gear drives the gear ring to rotate, causing the rotating drum and inner cylinder to rotate synchronously. The mortar raw materials are pushed from the left end to the right end of the inner cylinder. Mortar raw materials that do not meet the standards are not pushed to the right end of the inner cylinder and fall into the discharge pipe 2, finally being discharged through the discharge pipe 2. Mortar raw materials that meet the standards after being screened in the inner cylinder pass through the sieve holes and fall into the rotating drum, then are pushed from the left end of the rotating drum. The material is fed to the right end and then discharged through the discharge pipe, thus achieving screening. Simultaneously, during the screening of the mortar raw materials, the brush is in close contact with the inner wall of the inner cylinder. As the inner cylinder rotates, the inner wall rotates and contacts the brush, which removes the mortar raw materials clogging the screen holes, thereby reducing screen clogging. Therefore, this invention achieves the input of mortar raw materials through the feeding component, and the rotating drum and inner cylinder rotate synchronously under the drive component, thereby achieving the screening of mortar raw materials and reducing screen clogging. Furthermore, it effectively reduces the impact of dust emitted from the feed inlet on workers and the environment during operation. Attached Figure Description

[0016] Figure 1 This utility model relates to a three-dimensional mortar raw material screening device. Figure 1 .

[0017] Figure 2 This utility model relates to a three-dimensional mortar raw material screening device. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the internal structure of the rotating cylinder and inner cylinder in a mortar raw material screening device of this utility model.

[0019] Figure 4 This is a schematic diagram of the cover plate and support rod in a mortar raw material screening device according to this utility model.

[0020] Figure 5 This is a schematic diagram of the dust collection component in a mortar raw material screening device according to this utility model.

[0021] Figure 6 This is a schematic diagram of the internal structure of the feed hopper in a mortar raw material screening device according to this utility model.

[0022] Figure 7 This is a schematic diagram of the drive component in a mortar raw material screening device according to this utility model. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0024] like Figures 1 to 7As shown, a mortar raw material screening device includes a frame 1 and a protective box 2 fixedly mounted above the frame 1. A rotating drum 3 is installed inside the protective box 2, penetrating the protective box 2, with both ends of the drum 3 extending out of the protective box 2. An inner cylinder 4 is installed inside the rotating drum 3, and screen holes 5 are formed on the surface of the inner cylinder 4. A feeding assembly is installed at one end of the rotating drum 3, including a feeding hopper 6 fixed to one side of the frame 1. The inner diameters of both the rotating drum 3 and the inner cylinder 4 gradually increase in the direction away from the feeding hopper 6. A box body 7 is installed at the other end of the rotating drum 3, with the rotating drum 3 passing through the outer wall of the box body 7 and extending into the box body 7. A discharge assembly is installed inside the box body 7. An installation port 8 is provided on the right side of the box body 7. A cover plate 10 is installed at the opening 8 by bolts 9. A support rod 11 is provided on the side of the cover plate 10 near the box body 7. The rod body of the support rod 11 is parallel to the inner wall of the inner cylinder 4. A brush 12 is provided on the part of the support rod 11 that extends into the inner cylinder 4. In actual use, the brush 12 is in close contact with the inner wall of the inner cylinder 4. As the rotating drum 3 and the inner cylinder 4 rotate, the inner wall of the inner cylinder 4 will rotate and abut against the brush 12. The brush 12 will brush away the mortar raw material blocking the screen hole 5. A dust removal component is installed on the feed hopper 6. A conveying component is provided at the bottom of the inner cavity of the feed hopper 6. A feeding pipe 13 is provided on the right side of the bottom of the conveying component. The end of the feeding pipe 13 away from the feed hopper 6 passes through the outer wall of the rotating drum 3 and the inner cylinder 4 and extends into the inner cylinder 4.

[0025] With the above-mentioned structure, the inner diameter of the inner cylinder 4 gradually increases in the direction away from the feed hopper 6, so that the mortar raw material is pushed from the left end to the right end of the inner cylinder 4. Then, the mortar raw material that does not meet the standard does not pass through the sieve hole 5, but is continued to be pushed to the right end of the inner cylinder 4 and falls into the discharge pipe 15. Finally, it is discharged from the discharge pipe 15. Similarly, the inner diameter of the rotating cylinder 3 gradually increases in the direction away from the feed hopper 6. After being screened by the inner cylinder 4, the mortar raw material that meets the standard passes through the sieve hole 5 and falls into the rotating cylinder 3. Then, it is pushed from the left end to the right end of the rotating cylinder 3 and is discharged from the discharge pipe 14.

[0026] It is worth mentioning that a cover plate 10 is installed at the mounting port 8 on the housing 7 by bolts 9. When the brush 12 needs to be replaced, the cover plate 10 can be removed by unscrewing the bolts 9, and then the support rod 11 can be removed from the mounting port 8, making it convenient to replace the brush 12.

[0027] In this embodiment, the discharge assembly includes a discharge pipe 14 and a discharge pipe 2 15 disposed on the right side of the discharge pipe 14. The discharge pipe 14 is located below the end of the rotating drum 3 away from the feed hopper 6, and the discharge pipe 2 15 is located below the end of the inner drum 4 away from the feed hopper 6.

[0028] Please refer to this again. Figure 3The ends of the rotating drum 3 and the inner drum 4 away from the feed hopper 6 are both set to be open, and the length of the inner drum 4 is not less than the length of the rotating drum 3.

[0029] The applicant would like to explain that the existing screening device, due to the presence of a large amount of fine stone powder in the mortar raw material, will cause a large amount of dust to be sprayed out from the feed port when the mortar raw material is poured into the screening device. This not only affects the surrounding environment, but also seriously affects the health of the workers.

[0030] Therefore, a dust collection system is installed on feed hopper 6. Further details can be found by referring to [link / reference]. Figure 5 The dust removal assembly includes a vacuum cleaner 16, which is installed on the upper end of the frame 1 at the right side of the feed hopper 6. The input end of the vacuum cleaner 16 is connected to a conical cover 17, which is fixedly connected to the rear of the feed hopper 6 and communicates with the inside of the feed hopper 6. The output end of the vacuum cleaner 16 is provided with a dust collection bag 18.

[0031] Specifically, the conical cover 17 installed on the feed hopper 6 can suck up the dust generated when the mortar raw materials are poured in by the vacuum cleaner 16, and then store it in the dust collection bag 18, thereby effectively reducing the impact of dust sprayed out from the feed port on the staff and the environment when the device is in use.

[0032] Please refer to this again. Figure 6 The conveying assembly includes a conveying bin 19, a rotating shaft 20, and a motor 21. The rotating shaft 20 is horizontally disposed inside the conveying bin 19, and its right end is rotatably disposed on the right side wall of the conveying bin 19. The rotating shaft 20 is provided with a spiral blade 22. The motor 21 is located on the left side of the feed hopper 6. The left end of the rotating shaft 20 passes through the conveying bin 19 and the feed hopper 6 in sequence and is connected to the output shaft of the motor 21 through a coupling. A conveying inlet 23 is provided on the left side of the top of the conveying bin 19. The right side of the bottom of the conveying bin 19 is connected to the feeding pipe 13. The end of the feeding pipe 13 near the feed hopper 6 passes through the feed hopper 6 and the outer wall of the conveying bin 19 and is connected to the conveying bin 19.

[0033] In actual use, the mortar material to be screened is poured into the feed hopper 6. The mortar material enters the conveying bin 19 from the conveying inlet 23. After the motor 21 is started, it drives the spiral blades 22 on the rotating shaft 20 to rotate. The rotating spiral blades 22 can push the mortar material to the right of the conveying bin 19 in equal amounts, so that the mortar material is conveyed to the feeding pipe 13 in equal amounts and then enters the inner cylinder 4, preventing the mortar material inside the feed hopper 6 from clogging and effectively improving the operating efficiency of the device.

[0034] In this embodiment, the upper end of the frame 1 is provided with two sets of rollers 24, and the two sets of rollers 24 are respectively placed at both ends of the frame 1. The rotating drum 3 is fitted with annular guide rails 25 at each of the two sets of rollers 24. There are two rollers 24 in each set, and the rollers 24 abut against the annular guide rails 25. A toothed ring 26 is fitted on the rotating drum 3, and the toothed ring 26 is located between the two annular guide rails 25. A drive assembly is provided on one side of the frame 1 corresponding to the rotating drum 3.

[0035] Preferably, the drive assembly includes a second motor 28 and a reducer 29. The output end of the second motor 28 is connected to the reducer 29. The reducer 29 and the second motor 28 are fixedly mounted on the frame 1. A gear 27 is fixedly mounted on the output shaft of the reducer 29, and the gear 27 meshes with the gear ring 26. Through the meshing of the gear 27 and the gear ring 26, the power of the second motor 28 is transmitted to the gear ring 26, thereby driving the rotating drum 3 to rotate.

[0036] The instructions for using this product are as follows:

[0037] In use, mortar raw materials are fed into the feed hopper 6 and enter the conveying bin 19 through the conveying inlet 23. The motor 1 21 is started, causing the rotating shaft 20 to drive the spiral blades 22 to rotate. The rotating spiral blades 22 can push the mortar raw materials to the right of the conveying bin 19 in equal amounts, so that the mortar raw materials are conveyed to the feeding pipe 13 in equal amounts and then enter the inner cylinder 4. The motor 28 is started, causing the gear 27 to rotate. The gear 27 drives the gear ring 26 to rotate, which further causes the rotating drum 3 and the inner cylinder 4 to rotate synchronously, thereby causing the mortar raw materials inside the device to be screened. At the same time, during the screening process of the mortar raw materials, the brush 12 is in close contact with the inner wall of the inner cylinder 4. As the inner cylinder 4 rotates, the inner wall of the inner cylinder 4 will rotate and abut against the brush 12. The brush 12 will brush away the mortar raw materials blocking the screen holes 5, thereby reducing the clogging of the screen holes 5.

[0038] Furthermore, the specific process of screening the mortar raw materials inside the device is as follows: the mortar raw materials are pushed from the left end to the right end of the inner cylinder 4. Then, the mortar raw materials that do not meet the standards do not pass through the screen holes 5, but are pushed to the right end of the inner cylinder 4 and fall into the discharge pipe 15. Finally, they are discharged through the discharge pipe 15. The mortar raw materials that meet the standards after being screened by the inner cylinder 4 pass through the screen holes 5 and fall into the rotating drum 3. Then, they are pushed from the left end to the right end of the rotating drum 3 and discharged through the discharge pipe 14, thereby achieving screening.

[0039] In summary, this utility model achieves the input of mortar raw materials through the feeding component, and the rotating drum 3 and inner drum 4 rotate synchronously under the drive of the drive component, thereby realizing the screening of mortar raw materials and reducing the clogging of the screen holes 5. In addition, it can effectively reduce the impact of dust sprayed from the feed port on workers and the environment during the use of the device.

[0040] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A mortar raw material screening device, comprising a frame (1) and a protective box (2) fixedly mounted above the frame (1), wherein a rotating cylinder (3) is disposed inside the protective box (2), the rotating cylinder (3) penetrates the protective box (2), and both ends of the rotating cylinder (3) extend out of both ends of the protective box (2), characterized in that, The rotating drum (3) is equipped with an inner cylinder (4), and the inner cylinder (4) has sieve holes (5) on its surface. One end of the rotating drum (3) is equipped with a feeding assembly, which includes a feeding hopper (6) fixed to one side of the frame (1). The inner diameters of the rotating drum (3) and the inner cylinder (4) gradually increase in the direction away from the feeding hopper (6). The other end of the rotating drum (3) is equipped with a box (7), which passes through the outer wall of the box (7) and extends into the box (7). The box (7) is equipped with a discharge assembly. An installation port (8) is opened on the right side of the box (7), and the installation port (8) is used for... A cover plate (10) is installed on the bolt (9). A support rod (11) is provided on the side of the cover plate (10) near the box body (7). The rod body of the support rod (11) is parallel to the inner wall of the inner cylinder (4). A brush (12) is provided on the part of the support rod (11) that extends into the inner cylinder (4). A dust removal component is installed on the feed hopper (6). A conveying component is provided at the bottom of the inner cavity of the feed hopper (6). A feeding pipe (13) is provided on the right side of the bottom of the conveying component. The end of the feeding pipe (13) away from the feed hopper (6) passes through the rotating drum (3) and the outer wall of the inner cylinder (4) and extends into the inner cylinder (4).

2. The mortar raw material screening device according to claim 1, characterized in that, The discharge assembly includes a discharge pipe one (14) and a discharge pipe two (15) located on the right side of the discharge pipe one (14). The discharge pipe one (14) is located below the end of the rotating drum (3) away from the feed hopper (6), and the discharge pipe two (15) is located below the end of the inner cylinder (4) away from the feed hopper (6).

3. The mortar raw material screening device according to claim 1, characterized in that, Both the rotating drum (3) and the inner drum (4) are set to be open at the end away from the feed hopper (6), and the length of the inner drum (4) is not less than the length of the rotating drum (3).

4. The mortar raw material screening device according to claim 1, characterized in that, The dust removal assembly includes a vacuum cleaner (16), which is installed on the upper end of the frame (1) at the right side of the feed hopper (6). The input end of the vacuum cleaner (16) is connected to a conical hood (17), which is fixedly connected to the rear of the feed hopper (6) and communicates with the inside of the feed hopper (6). The output end of the vacuum cleaner (16) is provided with a dust collection bag (18).

5. The mortar raw material screening device according to claim 1, characterized in that, The conveying assembly includes a conveying bin (19), a rotating shaft (20), and a motor (21). The rotating shaft (20) is horizontally arranged inside the conveying bin (19). The right end of the rotating shaft (20) is rotatably arranged on the right side wall of the conveying bin (19). The rotating shaft (20) is provided with a spiral blade (22). The motor (21) is located on the left side of the feed hopper (6). The left end of the rotating shaft (20) passes through the conveying bin (19) and the feed hopper (6) in sequence and is connected to the output shaft of the motor (21) through a coupling. A conveying inlet (23) is opened on the left side of the top of the conveying bin (19). The right side of the bottom of the conveying bin (19) is connected to the feeding pipe (13). The end of the feeding pipe (13) near the feed hopper (6) passes through the feed hopper (6) and the outer wall of the conveying bin (19) and is connected to the conveying bin (19).

6. The mortar raw material screening device according to claim 1, characterized in that, The upper end of the frame (1) is provided with two sets of rollers (24), and the two sets of rollers (24) are respectively placed at both ends of the frame (1). The rotating drum (3) is fitted with annular guide rails (25) at the two sets of rollers (24). There are two rollers (24) in each set, and the rollers (24) abut against the annular guide rails (25). A toothed ring (26) is fitted on the rotating drum (3), and the toothed ring (26) is located between the two annular guide rails (25). A drive assembly is provided on one side of the frame (1) corresponding to the rotating drum (3).

7. The mortar raw material screening device according to claim 6, characterized in that, The drive assembly includes a second motor (28) and a reducer (29). The output end of the second motor (28) is connected to the reducer (29). The reducer (29) and the second motor (28) are fixedly mounted on the frame (1). A gear (27) is fixedly mounted on the output shaft of the reducer (29). The gear (27) meshes with the gear ring (26).

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