Equipment for screening building materials

Abstract

The utility model discloses equipment for screening building materials in the technical field of building materials, which comprises a screening box, a screen mesh, a feed port, a first discharge port, a second discharge port, a supporting seat, a scraper mechanism and a vibrating mechanism, the feed port is arranged at the top of the screening box, the first discharge port is arranged on the side wall of the screening box, and the second discharge port is arranged on the side wall of the screening box. The second discharging port is formed in the bottom wall of the screening box, a cavity is formed in the screening box, the screen is arranged in the cavity, the feeding port, the first discharging port and the second discharging port are communicated through the cavity, the scraper mechanism comprises a scraper, a push rod and a power mechanism, and the power mechanism drives the scraper to move back and forth on the upper surface of the screen towards the first discharging port. Supporting legs are arranged at the bottom of the supporting seat, a cavity structure sleeved with the supporting legs is arranged at the top of the vibration mechanism body, the vibration mechanism is arranged at the bottom of the supporting seat, and a convex block of the vibration mechanism rotates to drive the screening box to vibrate up and down. The technical problems that a screen of an existing device is prone to being blocked, and the screening efficiency is low are solved.

Description

Technical Field

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

[0002] Building materials are various materials used in construction projects. There are many types of building materials, which can be roughly divided into: inorganic materials, organic materials and composite materials. Before sand and gravel are put into construction, they should have a relatively ideal particle size distribution, purity and gradation. Therefore, sand and gravel need to be screened using screening equipment. Unscreened or unqualified sand and gravel may cause problems such as insufficient strength of concrete structure, cracking, leakage or freeze-thaw damage.

[0003] The utility model with the authorization announcement number CN212550342U discloses a material screening device for construction, including a screening device, a sand and gravel discharge port is provided on one side wall of the screening device, and a sand discharge port is provided at the center of the bottom end of the screening device, both sides of the bottom end of the screening device are fixedly connected with support legs, a filter is fixedly connected to the inner wall of the screening device, and a stepper motor is fixedly installed on one side of the end face of the screening device, a control panel is embedded in the end face of the screening device, a hopper is provided on the top of the stepper motor, and one end of the stepper motor is rotatably connected, the side wall of the hopper is hinged with an articulated rod, and the hopper is hinged on the side wall of the screening device. In the utility model, the articulated rod is driven to rotate by the stepper motor, so that the articulated rod drives the hopper to rotate, thereby avoiding dust from being raised, and also facilitating the user to transport sand and gravel.

[0004] This type of building material screening device for construction has the following disadvantages: the building material screening device of the application cannot effectively prevent blockage during the screening process, and blockage is prone to occur during the screening process. Some large-volume sand and gravel that cannot pass through the screen will remain on the upper surface of the screen, and these large-volume sand and gravel will be difficult to remove from the screening equipment, reducing the screening efficiency and causing inconvenience to the operator's operation. Utility Model Content

[0005] In order to solve the technical problems existing in the above-mentioned prior art, the utility model provides a device for screening building materials which is anti-clogging and improves screening efficiency.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The equipment for screening building materials comprises a screening box, a screen, a feed port, a first discharge port, a second discharge port and a support seat, wherein the feed port is arranged on the screening box, the first discharge port is arranged on the side wall of the screening box, the second discharge port is arranged on the bottom wall of the screening box, the screening box has a chamber inside, the screen is arranged in the chamber and corresponds to the first discharge port, the chamber connects the feed port, the first discharge port and the second discharge port, the top of the support seat is fixedly connected to the bottom wall of the screening box, the bottom of the support seat has a support foot, the feed port is arranged on the top of the screening box, and also comprises a scraper mechanism and a vibration mechanism, the vibration mechanism The mechanism is arranged at the bottom of the support seat, the scraper mechanism includes a scraper, a push rod and a power mechanism, the scraper is located inside the chamber and contacts the upper surface of the screen, one end of the push rod is connected to the scraper, and the other end is connected to the output end of the power mechanism, the power mechanism drives the scraper to make a reciprocating motion on the upper surface of the screen toward the first discharge port, the vibration mechanism includes a vibration mechanism body, a convex block and a rotating motor A, a cavity structure which is sleeved with a support foot is arranged on the top of the vibration mechanism body, the convex block is fixedly connected to the output shaft of the rotating motor A, the convex block abuts against the bottom of the support seat, and the rotation of the convex block drives the screening box to vibrate up and down.

[0008] Furthermore, the screen includes a coarse screen and a fine screen, the coarse screen and the fine screen are arranged horizontally, the coarse screen is located above the fine screen, and the scraper contacts the upper surfaces of the coarse screen and the fine screen respectively.

[0009] Furthermore, a power mechanism is arranged outside the screening box, and the power mechanism includes a belt, a driving pulley, a driven pulley and a rotating motor B. The driving pulley is fixedly connected to the output end of the rotating motor B. The driving pulley and the driven pulley are arranged on the same horizontal line. The belt is installed on the driving pulley and the driven pulley, and the push rod is fixedly connected to the belt.

[0010] Furthermore, it also includes a cover plate and a driving mechanism. The cover plate is arranged on the feed port, and the driving mechanism is arranged on the screening box. The driving mechanism includes a rotating motor C, a transmission rod and an L-shaped connecting rod. Two supports are fixedly arranged on the top of the screening box. The L-shaped connecting rod includes two turning sections. One section is a circular shaft, and the other section is provided with a guide groove arranged along the length direction of this section. Both ends of the circular shaft are rotatably connected to the supports, the side of the cover plate is fixedly connected to the circular shaft, the output shaft of the rotating motor C is horizontally arranged, the transmission rod is perpendicular to the output shaft of the rotating motor C, one end of the transmission rod is fixedly connected to the output shaft of the rotating motor C, and the other end extends a sliding rod perpendicular to the length direction of the transmission rod, and the sliding rod is slidably matched with the guide groove.

[0011] Furthermore, it also includes a gate plate and a telescopic cylinder, which is arranged on a screening box or a support seat, and the output end of the telescopic cylinder is arranged vertically. A gate chamber is arranged in the side of the screening box where the first discharge port is located, and the gate plate is arranged in the gate chamber. The gate plate cooperates with the gate chamber, and one side of the gate plate extends out of the screening box. The extended part of the gate plate extending out of the screening box is connected to the output end of the telescopic cylinder. The telescopic cylinder pushes the gate plate to slide in the gate chamber, so as to release or realize the complete covering of the first discharge port by the gate plate.

[0012] Furthermore, it also includes a collecting box, and a mounting structure is provided on the side outer wall of the screening box where the first discharge port is located. The collecting box is open, and the mounting structure is provided with a mounting cavity adapted to the shape of the collecting box. The mounting cavity completely accommodates the collecting box, and the opening on the top of the collecting box corresponds to the position of the first discharge port.

[0013] Furthermore, a handle is provided on the side of the collection box.

[0014] The beneficial effects of the utility model are:

[0015] 1. The equipment for screening building materials realizes graded screening of building materials by opening a feed port on the top of the screening box, a first discharge port on the side wall, a second discharge port on the bottom wall, and arranging a screen inside. The scraper mechanism and the vibration mechanism significantly improve the screening efficiency and effect.

[0016] Scraper mechanism: The combined design of the scraper, push rod and power mechanism enables the scraper to move back and forth on the surface of the screen toward the first discharge port, effectively preventing sand and gravel from clogging the screen holes, improving screening permeability, and ensuring continuous and efficient screening.

[0017] Vibration mechanism: Through the cooperation of the vibration mechanism body, the convex block and the rotating motor A, the screening box vibrates up and down, which helps the sand and gravel to be evenly distributed on the screen and pass through the screen holes quickly, improves the screening efficiency, reduces the retention of sand and gravel, and ensures the screening efficiency and accuracy.

[0018] 2. The coarse screen and fine screen are arranged in horizontal layers, so that the double classification of building materials can be completed in one screening. The coarse screen is located at the top to screen the large-grained sand and gravel first, and the fine screen is located at the bottom to further finely screen the remaining sand and gravel after the coarse screen. This design simplifies the screening process, saves equipment space, improves screening efficiency, and meets the needs of accurate separation of different particle size levels of building materials.

[0019] 3. The power mechanism adopts a combination of belt, driving pulley, driven pulley and rotating motor B, which realizes the smooth and reliable drive of the push rod and ensures that the scraper makes stable reciprocating motion on the screen. The belt drive method has the advantages of smooth transmission, low noise and easy maintenance, which is conducive to improving the stability and service life of the equipment.

[0020] 4. The configuration of the cover plate and the driving mechanism realizes the automatic opening and closing of the feed port. The rotating motor C, transmission rod, L-shaped connecting rod and sliding rod in the driving mechanism cooperate with each other. Driven by the rotating motor C, the cover plate can be automatically opened or closed according to the screening needs, effectively preventing dust from flying during the screening process, improving the working environment, and facilitating the control of the feeding rhythm to keep the screening process in an orderly manner.

[0021] 5. Add gate plates and telescopic cylinders to realize flexible control of the first discharge port. The telescopic cylinder pushes the gate plate to slide in the gate chamber, and the first discharge port can be easily opened or closed as needed, which is convenient for controlling the discharge time and sequence of sand and gravel with different particle sizes after screening, which is conducive to the orderly collection and subsequent processing of sand and gravel. At the same time, it can also avoid accidental overflow of sand and gravel during the screening process, and improve the convenience and safety of equipment operation.

[0022] 6. Equipped with a collection box and corresponding installation structure, the screened sand and gravel can directly fall into the collection box, which is convenient for centralized collection and transportation. The collection box is closely combined with the installation structure of the side outer wall of the screening box to form a stable storage space, avoid the scattering of sand and gravel, and keep the work site clean. This design simplifies the sand and gravel collection process, improves work efficiency, and reduces labor intensity.

[0023] 7. A handle is set on the side of the collection box, which makes it easy for operators to grasp, carry and dump the sand and gravel in the collection box, further improving the convenience of equipment use, reducing the burden of manual operation and improving overall work efficiency. At the same time, the design of the handle is also ergonomic, which improves the comfort of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the equipment for screening building materials of the utility model;

[0025] Figure 2 yes Figure 1 A cross-sectional view of

[0026] Figure 3 yes Figure 1 A cross-sectional view of the cooperation between the middle support leg and the vibration mechanism;

[0027] Figure 4 yes Figure 1 A cross-sectional view of the middle gate plate and the first discharge port;

[0028] Marked in the figure are, 1-screening box, 2-screen, 3-feeding port, 4-first discharging port, 5-second discharging port, 6-support seat, 7-support foot, 8-scraper, 9-push rod, 10-vibration mechanism body, 11-convex block, 12-rotating motor A, 13-coarse screen, 14-fine screen, 15-belt, 16-driving pulley, 17-driven pulley, 18-rotating motor B, 19-cover plate, 20-rotating motor C, 21-transmission rod, 22-L-shaped connecting rod, 23-support, 24-round shaft, 25-guide groove, 26-slide rod, 27-gate plate, 28-telescopic cylinder, 29-gate chamber, 30-extension part, 31-collection box, 32-installation structure, 33-handle. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the embodiments of the present application more clearly expressed, the present invention is further described below in conjunction with the accompanying drawings.

[0030] First of all, it needs to be stated that the technical solutions of the embodiments of the present application are clearly and completely described. The described embodiments are part of the embodiments of the present application, rather than limitations of the present utility model. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present application.

[0031] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by terms such as “first”, “second”, “upper”, “lower”, “left”, “right”, “inner”, “outer”, “axial” or “radial” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They are not intended to indicate or imply that the device or element referred to must have a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0032] It should be noted that, in the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection: it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Reference Figures 1 to 4 , the utility model provides a device for screening building materials.

[0034] In some embodiments, an apparatus for screening building materials includes a screening box 1, a screen 2, a feed port 3, a first discharge port 4, a second discharge port 5 and a support seat 6, wherein the feed port 3 is provided on the screening box 1, the first discharge port 4 is provided on the side wall of the screening box 1, the second discharge port 5 is provided on the bottom wall of the screening box 1, the screening box 1 has a chamber inside, the screen 2 is arranged in the chamber and corresponds to the first discharge port 4, the chamber connects the feed port 3, the first discharge port 4 and the second discharge port 5, the top of the support seat 6 is fixedly connected to the bottom wall of the screening box 1, the bottom of the support seat 6 has a support leg 7, the feed port 4 is provided on the top of the screening box 1, and also includes a scraper mechanism and a vibration mechanism. The vibration mechanism is arranged at the bottom of the support seat 6, the scraper mechanism includes a scraper 8, a push rod 9 and a power mechanism, the scraper 8 is located inside the chamber and contacts the upper surface of the screen 2, one end of the push rod 9 is connected to the scraper 8, and the other end is connected to the output end of the power mechanism, the power mechanism drives the scraper 8 to make a reciprocating motion on the upper surface of the screen 2 toward the first discharge port 4, the vibration mechanism includes a vibration mechanism body 10, a convex block 11 and a rotating motor A12, a cavity structure sleeved with the support foot 7 is arranged on the top of the vibration mechanism body 10, the convex block 11 is fixedly connected to the output shaft of the rotating motor A12, the convex block 11 abuts against the bottom of the support seat 6, and the rotation of the convex block 11 drives the screening box 1 to vibrate up and down.

[0035] For the setting of the power mechanism, a combination of a belt 15, a driving pulley 16, a driven pulley 17 and a rotating motor B18 can be selected to realize smooth transmission; a pushing cylinder device can also be used, the cylinder body of the pushing cylinder is fixed on the screening box 1 or the support seat 6, and its piston rod is connected to the scraper 8. The telescopic action of the cylinder is adjusted by the air pressure control system to drive the scraper 8 to reciprocate on the screen 2; a linear motor can also be used, the stator of the linear motor is installed at an appropriate position of the screening box 1, the mover is connected to the scraper 8, and the current of the motor is controlled to realize the precise and rapid reciprocating motion of the scraper 8 on the screen 1; or a gear rack transmission can be used, the gear is installed on the output shaft of the rotating motor B18, the rack is connected to the push rod 9, the motor drives the gear to rotate, and the rotational motion is converted into linear reciprocating motion through the meshing of the gear and the rack, thereby driving the scraper 8 to work.

[0036] It should be noted that the screen 2 is arranged in the chamber and corresponds to the first discharge port 4. It should be ensured that the sand and gravel on the screen 2 can be discharged through the first discharge port 4 under the action of the scraper 8. As for how the screen 2 is set, it can be set horizontally or at a certain inclination angle relative to the horizontal plane.

[0037] In some embodiments, the screen 2 includes a coarse screen 13 and a fine screen 14. The coarse screen 13 and the fine screen 14 are arranged horizontally, the coarse screen 13 is located above the fine screen 14, and the scraper 8 contacts the upper surfaces of the coarse screen 13 and the fine screen 14 respectively.

[0038] In some embodiments, the power mechanism is arranged outside the screening box 1, and the power mechanism includes a belt 15, a driving pulley 16, a driven pulley 17 and a rotating motor B18. The driving pulley 16 is fixedly connected to the output end of the rotating motor B18. The driving pulley 16 and the driven pulley 17 are arranged on the same horizontal line. The belt 15 is installed on the driving pulley 16 and the driven pulley 17, and the push rod 9 is fixedly connected to the belt 15.

[0039] The relative position of the driving pulley 16 and the driven pulley 17 corresponds to the setting of the screen 2. When the screen 2 is set horizontally, the driving pulley 16 and the driven pulley 17 are set on the same horizontal line. When the screen 2 is set at a certain tilt angle relative to the horizontal plane, the driving pulley 16 and the driven pulley 17 are set on an inclined line, and the inclined line is parallel to the screen 2. In this way, it is ensured that the power mechanism can stably drive the scraper 8 to clean the large volume of sand and gravel on the screen 2.

[0040] In some embodiments, it also includes a cover plate 19 and a driving mechanism. The cover plate 19 is covered on the feed port 3, and the driving mechanism is arranged on the screening box 1. The driving mechanism includes a rotating motor C20, a transmission rod 21 and an L-shaped connecting rod 22. Two supports 23 are fixedly arranged on the top of the screening box 1. The L-shaped connecting rod 22 includes two turning sections, one section is a circular shaft 24, and the other section is provided with a guide groove 25 arranged along the length direction of this section. Both ends of the circular shaft 24 are rotatably connected to the support 23, and the side of the cover plate 19 is fixedly connected to the circular shaft 24. The output shaft of the rotating motor C20 is horizontally arranged, and the transmission rod 21 is perpendicular to the output shaft of the rotating motor C20. One end of the transmission rod 21 is fixedly connected to the output shaft of the rotating motor C20, and the other end extends a sliding rod 26 perpendicular to the length direction of the transmission rod 21, and the sliding rod 26 is slidably matched with the guide groove 25.

[0041] The two turning sections of the L-shaped connecting rod 22 can be set as a whole, or designed in sections and fixedly connected. The transmission rod 21 is driven to rotate by the rotating motor C20, and the sliding rod 26 on the transmission rod 21 slides with the guide groove 25, thereby driving the circular shaft 24 to rotate, so that the cover plate 19 is automatically opened or closed according to the screening demand, effectively preventing dust from flying during the screening process, improving the working environment, and facilitating the control of the feeding rhythm.

[0042] In some embodiments, it also includes a gate plate 27 and a telescopic cylinder 28. The telescopic cylinder 28 is arranged on the screening box 1 or the support seat 6. The output end of the telescopic cylinder 28 is arranged vertically. A gate chamber 29 is arranged in the side of the screening box 1 where the first discharge port 4 is located. The gate plate 27 is arranged in the gate chamber 29. The gate plate 27 cooperates with the gate chamber 29. One side of the gate plate 27 extends out of the screening box 1. The extension part 30 of the gate plate 27 extending out of the screening box 1 is connected to the output end of the telescopic cylinder 28. The telescopic cylinder 28 pushes the gate plate 27 to slide in the gate chamber 29, so as to release or realize the complete covering of the first discharge port 4 by the gate plate 27.

[0043] In some embodiments, a collection box 31 is also included, and a mounting structure 32 is provided on the side outer wall of the screening box 1 where the first discharge port 4 is located. The collection box 31 is open, and the mounting structure 32 is provided with a mounting cavity adapted to the shape of the collection box 31. The mounting cavity completely accommodates the collection box 31, and the opening at the top of the collection box 31 corresponds to the position of the first discharge port 4. The collection box 31 cooperates with the mounting cavity to present a drawer-type design, which not only facilitates the placement and removal of the collection box 31, but also prevents the sand and gravel from scattering, keeping the work site clean.

[0044] In some embodiments, a handle 33 is provided on the side of the collection box 31. The design of the handle 33 facilitates the operator to easily grasp, carry and dump the sand and gravel in the collection box 31, further improving the convenience of using the equipment.

Claims

1. An apparatus for screening building materials, comprising a screening box (1), a screen (2), a feed port (3), a first discharge port (4), a second discharge port (5) and a support seat (6), wherein the feed port (3) is provided on the screening box (1), the first discharge port (4) is provided on the side wall of the screening box (1), the second discharge port (5) is provided on the bottom wall of the screening box (1), the screening box (1) has a chamber inside, the screen (2) is arranged in the chamber and corresponds to the first discharge port (4), the chamber connects the feed port (3), the first discharge port (4) and the second discharge port (5), the top of the support seat (6) is fixedly connected to the bottom wall of the screening box (1), and the bottom of the support seat (6) has a support foot (7), wherein the apparatus is characterized in that: The feed port (3) is provided at the top of the screening box (1), and also includes a scraper mechanism and a vibration mechanism. The vibration mechanism is arranged at the bottom of the support seat (6). The scraper mechanism includes a scraper (8), a push rod (9) and a power mechanism. The scraper (8) is located inside the chamber and contacts the upper surface of the screen (2). One end of the push rod (9) is connected to the scraper (8), and the other end is connected to the output end of the power mechanism. The power mechanism drives the scraper (8) to make a reciprocating motion on the upper surface of the screen (2) toward the first discharge port (4). The vibration mechanism includes a vibration mechanism body (10), a convex block (11) and a rotating motor A (12). A cavity structure sleeved with the support foot (7) is arranged at the top of the vibration mechanism body (10). The convex block (11) is fixedly connected to the output shaft of the rotating motor A (12). The convex block (11) abuts against the bottom of the support seat (6). The convex block (11) rotates to drive the screening box (1) to vibrate up and down.

2. The device for screening building materials as claimed in claim 1, characterized in that: The screen (2) comprises a coarse screen (13) and a fine screen (14). The coarse screen (13) and the fine screen (14) are arranged horizontally, the coarse screen (13) is located above the fine screen (14), and the scraper (8) is in contact with the upper surfaces of the coarse screen (13) and the fine screen (14) respectively.

3. The device for screening building materials according to claim 1 or 2, characterized in that: The power mechanism is arranged outside the screening box (1), and comprises a belt (15), a driving pulley (16), a driven pulley (17) and a rotating motor B (18); the driving pulley (16) is fixedly connected to the output end of the rotating motor B (18); the driving pulley (16) and the driven pulley (17) are arranged on the same horizontal line; the belt (15) is mounted on the driving pulley (16) and the driven pulley (17); and the push rod (9) is fixedly connected to the belt (15).

4. The device for screening building materials as claimed in claim 1, characterized in that: The invention also comprises a cover plate (19) and a driving mechanism. The cover plate (19) is arranged on the feed port (3). The driving mechanism is arranged on the screening box (1). The driving mechanism comprises a rotating motor C (20), a transmission rod (21) and an L-shaped connecting rod (22). Two supports (23) are fixedly arranged on the top of the screening box (1). The L-shaped connecting rod (22) comprises two sections of turning, one section is a circular shaft (24), and the other section is provided with a guide slide groove (25) arranged along the length direction of the section. Both ends of the circular shaft (24) are rotatably connected to the supports (23). The side of the cover plate (19) is fixedly connected to the circular shaft (24). The output shaft of the rotating motor C (20) is arranged horizontally. The transmission rod (21) is perpendicular to the output shaft of the rotating motor C (20). One end of the transmission rod (21) is fixedly connected to the output shaft of the rotating motor C (20), and the other end extends a slide rod (26) perpendicular to the length direction of the transmission rod. The slide rod (26) is slidably matched with the guide slide groove (25).

5. The device for screening building materials as claimed in claim 1, characterized in that: The invention also comprises a gate plate (27) and a telescopic cylinder (28), wherein the telescopic cylinder (28) is arranged on the screening box (1) or the support seat (6), and the output end of the telescopic cylinder (28) is arranged vertically. A gate chamber (29) is arranged in the side of the screening box (1) where the first discharge port (4) is located, and the gate plate (27) is arranged in the gate chamber (29). The gate plate (27) cooperates with the gate chamber (29), and one side of the gate plate (27) extends out of the screening box (1). An extension portion (30) of the gate plate (27) extending out of the screening box (1) is connected to the output end of the telescopic cylinder (28). The telescopic cylinder (28) pushes the gate plate (27) to slide in the gate chamber (29), so as to release or realize the gate plate (27) completely covering the first discharge port (4).

6. The device for screening building materials as claimed in claim 1, characterized in that: The invention also comprises a collecting box (31), a side outer wall of the screening box (1) where the first discharge port (4) is located is provided with a mounting structure (32), the collecting box (31) is open, the mounting structure (32) is provided with a mounting cavity adapted to the outer shape of the collecting box (31), the mounting cavity completely accommodates the collecting box (31), and the opening at the top of the collecting box (31) corresponds to the position of the first discharge port (4).

7. The device for screening building materials as claimed in claim 6, characterized in that: A handle (33) is provided on the side of the collection box (31).

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