Screening device for concrete production

Abstract

The utility model provides a screening device for concrete production, which comprises a screening cylinder framework, a screening component and a screening cylinder, the screening assembly comprises a flexible screen mesh and a hard screen mesh, the flexible screen mesh is used for screening wet sticky aggregate, a plurality of reinforcing ribs are evenly distributed on the flexible screen mesh in the radial direction, and the hard screen mesh is used for screening large-particle-size broken stone; the utility model relates to the technical field of screening devices, gravel raw materials needing to be screened are put into a cylinder composed of the material screening cylinder framework, the flexible screen and the hard screen, and the flexible screen, the hard screen and the material screening cylinder framework form a cylindrical structure. The hard screen located at the bottom of the screening cylinder framework is used for screening broken stones, the flexible screen is used for screening wet sticky aggregates, and a cylinder composed of the screening cylinder framework, the flexible screen and the hard screen is beneficial to screening of concrete raw materials of different forms.

Description

Technical Field

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

[0002] In the concrete production process, the screening of aggregates (such as sand and stone) is a key step in ensuring the quality of concrete. Traditional screening devices (such as vibrating screens and drum screens) are widely used. Among them, drum screens are usually made of steel or stainless steel. The surface of the metal drum screen is rough and lacks elasticity. Wet and sticky materials (such as damp sand and gravel) are easy to adhere and clog the screen holes, making traditional drum screens unsuitable for screening concrete raw materials of different forms. Utility Model Content

[0003] The purpose of this utility model is to provide a screening device for concrete production, which solves the problem that traditional drum screens are not suitable for screening concrete raw materials of different forms.

[0004] This utility model provides a screening device for concrete production, comprising:

[0005] A screening cylinder frame, wherein screening components are arranged on the outer periphery of the screening cylinder frame;

[0006] The screening component includes:

[0007] A flexible screen, used for screening wet, sticky aggregates, has multiple reinforcing ribs evenly distributed radially, with both ends of each reinforcing rib fixedly connected to the screen's cylindrical frame.

[0008] A rigid screen, said rigid screen being used for screening large-diameter crushed stone;

[0009] The flexible screen and the rigid screen are symmetrically distributed based on the axis of the screening cylinder skeleton;

[0010] The flexible screen and the rigid screen together form a cylindrical structure with the screening cylinder skeleton.

[0011] Preferably, the screening cylinder frame is equipped with a swing component, which is used to drive the screening cylinder frame to swing in order to screen materials;

[0012] The swing component includes:

[0013] Mounting base, wherein a rotating shaft is rotatably connected in the mounting base, and the rotating shaft is connected to the screen cylinder frame through a connector;

[0014] A drive shaft is connected to the mounting base via a bearing. The drive shaft is arranged parallel to the rotating shaft. A servo motor is configured at the input end of the drive shaft. The bottom end of the servo motor is fixedly connected to the mounting base. A first gear is fixedly connected to the output end of the drive shaft.

[0015] The second gear has its center hole fixedly connected to the rotating shaft, and its outer circumference meshes with the first gear.

[0016] Preferably, the connector includes:

[0017] A fixed housing is fixedly connected to the output end of the rotating shaft, and a rectangular groove is provided in the fixed housing;

[0018] The plug-in block is fixedly connected to the sealing end of the screen cylinder frame, the plug-in block is adapted to the rectangular groove, and the plug-in block is connected to the fixed shell by bolts.

[0019] Preferably, the bolts are symmetrically distributed based on the fixed shell.

[0020] Preferably, the mounting base is equipped with an auxiliary support member, which is used to increase the stability of the screen cylinder frame when it swings.

[0021] The auxiliary support component includes:

[0022] Two support rods, one end of each support rod is fixedly connected to the mounting base, and the other end of each support rod is fixedly connected to an arc-shaped bracket;

[0023] Two rollers are arranged in the groove of the arc-shaped support, and the outer circumference of the two rollers abuts against the screen cylinder frame.

[0024] Preferably, a load-bearing component is mounted on the bottom end of the mounting base;

[0025] The carrier component includes:

[0026] A constraint frame is rotatably connected to the mounting base via a pin, and a base plate is fixedly connected to the bottom end of the constraint frame;

[0027] A telescopic component, wherein a retaining seat is fixedly connected to the bottom end of the telescopic component, and the bottom end of the retaining seat is fixedly connected to the base plate;

[0028] A limiting block is fixedly connected to the output end of the telescopic component, and the limiting block is located between the mounting base and the base plate.

[0029] Preferably, the telescopic component is an electric push rod.

[0030] Preferably, the end of the limiting block away from the telescopic member is machined with a bevel.

[0031] Preferably, the rigid screen is made of stainless steel.

[0032] Preferably, the flexible screen is made of polyurethane material.

[0033] This utility model provides a screening device for concrete production:

[0034] By using a combination of a screening cylinder frame, flexible screen, reinforcing ribs, and rigid screen, the crushed stone material to be screened is fed into the cylinder composed of the screening cylinder frame, flexible screen, and rigid screen. The rigid screen located at the bottom of the screening cylinder frame screens the crushed stone, increasing the service life of the overall mechanism. By changing the positions of the flexible and rigid screens, the flexible screen screens screen wet and sticky aggregates, preventing screen hole clogging. The softer texture of the flexible screen also helps reduce noise. The cylinder composed of the screening cylinder frame, flexible screen, and rigid screen is suitable for screening concrete materials of different shapes, thereby improving the versatility of the overall mechanism. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of this utility model;

[0037] Figure 2 This is a schematic diagram of the structure of the screening cylindrical skeleton, flexible screen, reinforcing ribs, and rigid screen in this utility model;

[0038] Figure 3 This is a partial sectional view of the mounting base in this utility model;

[0039] Figure 4 This is a schematic diagram of the structure of the support rod, arc-shaped bracket, and roller in this utility model;

[0040] Figure 5 This is a structural schematic diagram of the constraint frame, base plate, telescopic component, card seat, and limit block in this utility model.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1-Screening cylinder frame, 2-Screening assembly, 21-Flexible screen, 211-Reinforcing rib, 22-Hard screen, 3-Auxiliary support, 31-Support rod, 32-Arc bracket, 321-Roller, 4-Swing assembly, 41-Mounting base, 411-Rotating shaft, 42-Connector, 421-Fixed shell, 421a-Rectangular groove, 422-Plug-in block, 423-Bolt, 43-Drive shaft, 431-Servo motor, 432-First gear, 44-Second gear, 5-Bearing assembly, 51-Constraint frame, 52-Base plate, 53-Telescopic component, 531-Card holder, 54-Limiting block. Detailed Implementation

[0043] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" 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.

[0046] In this embodiment, as Figure 1 and Figure 2As shown, a screening device for concrete production includes: a screening cylindrical frame 1, with a screening component 2 arranged on the outer periphery of the screening cylindrical frame 1; the screening component 2 includes: a flexible screen 21, which is used to screen wet viscous aggregate, and a plurality of reinforcing ribs 211 are evenly distributed radially on the flexible screen 21, with both ends of the plurality of reinforcing ribs 211 fixedly connected to the screening cylindrical frame 1; and a rigid screen 22, which is used to screen large-diameter crushed stone; the flexible screen 21 and the rigid screen 22 are symmetrically distributed based on the axis of the screening cylindrical frame 1; the flexible screen 21 and the rigid screen 22 together with the screening cylindrical frame 1 form a cylindrical structure.

[0047] Therefore, the crushed stone raw materials to be screened are put into the cylinder composed of the screening cylinder frame 1, the flexible screen 21 and the rigid screen 22. The rigid screen 22 located at the bottom of the screening cylinder frame 1 screens the crushed stone, increasing the service life of the overall mechanism. By changing the usage position of the flexible screen 21 and the rigid screen 22, the flexible screen 21 screens the wet and sticky aggregate, preventing the screen holes from clogging. Moreover, the softer texture of the flexible screen 21 is conducive to noise reduction. The cylinder composed of the screening cylinder frame 1, the flexible screen 21 and the rigid screen 22 is conducive to screening different types of concrete aggregates.

[0048] Specifically, the flexible screen 21 is located at the top of the screening cylinder frame 1, and the rigid screen 22 is located at the bottom of the screening cylinder frame 1. The flexible screen 21 and the rigid screen 22 are used to screen different types of concrete raw materials and have good versatility.

[0049] In addition, there are four reinforcing ribs 211, which are used to increase the connection strength between the flexible screen 21 and the screen cylinder frame 1, and to improve the load-bearing capacity of the flexible screen 21.

[0050] In some embodiments, such as Figure 3 As shown, the screening cylinder frame 1 is equipped with a swing assembly 4, which is used to drive the screening cylinder frame 1 to swing in order to screen materials. The swing assembly 4 includes: a mounting base 41, in which a rotating shaft 411 is rotatably connected, and the rotating shaft 411 is connected to the screening cylinder frame 1 through a connector 42; a drive shaft 43, which is connected to the mounting base 41 through a bearing, and the drive shaft 43 is arranged parallel to the rotating shaft 411. A servo motor 431 is configured at the input end of the drive shaft 43, and the bottom end of the servo motor 431 is fixedly connected to the mounting base 41. A first gear 432 is fixedly connected at the output end of the drive shaft 43; and a second gear 44, whose center hole is fixedly connected to the rotating shaft 411, and whose outer circumference meshes with the first gear 432.

[0051] Specifically, the rotating shaft 411 is connected to the mounting base 41 via a bearing. The rotating shaft 411 drives the screen cylinder frame 1 to rotate via the connecting piece 42. The servo motor 431 drives the drive shaft 43 to rotate via a coupling. The outer circumference of the first gear 432 is designed with one-third ring of teeth and meshes with the second gear 44. The second gear 44 is used to drive the rotating shaft 411 to move.

[0052] In some embodiments, such as Figure 3 As shown, the connector 42 includes: a fixed shell 421, which is fixedly connected to the output end of the rotating shaft 411, and a rectangular groove 421a is provided in the fixed shell 421; and a plug-in block 422, which is fixedly connected to the sealing end of the screen cylinder frame 1, and the plug-in block 422 is adapted to the rectangular groove 421a. The plug-in block 422 is connected to the fixed shell 421 by bolts 423.

[0053] Specifically, the rotating shaft 411 drives the fixed housing 421 to rotate, and the plug block 422 can be inserted into the rectangular slot 421a, and the plug block 422 is connected to the fixed housing 421 by the bolt 423;

[0054] It should be noted that both the rectangular groove 421a and the plug-in block 422 adopt a rectangular design, which facilitates the interchange of the flexible screen 21 and the rigid screen 22 to screen materials in different states.

[0055] In some embodiments, such as Figure 3 As shown, bolts 423 are symmetrically distributed based on the fixed shell 421.

[0056] Specifically, four bolts 423 are designed and distributed on the front, back, top and bottom surfaces of the fixing shell 421. The design of four bolts 423 increases the connection stability between the fixing shell 421 and the plug block 422.

[0057] In some embodiments, such as Figure 4 As shown, the mounting base 41 is equipped with an auxiliary support 3, which is used to increase the stability of the screen cylinder frame 1 when it swings. The auxiliary support 3 includes two support rods 31, one end of each support rod 31 is fixedly connected to the mounting base 41, and the other end of each support rod 31 is fixedly connected to an arc-shaped bracket 32. Two rollers 321 are arranged in the groove of the arc-shaped bracket 32, and the outer periphery of each roller 321 abuts against the screen cylinder frame 1.

[0058] Specifically, the design of the two support rods 31 increases the connection strength between the arc-shaped bracket 32 ​​and the mounting base 41. The groove of the arc-shaped bracket 32 ​​is adapted to the outer diameter of the screen cylinder frame 1. The design of the two rollers 321 is used to assist the rotation of the screen cylinder frame 1. The arc-shaped bracket 32 ​​supports the feed end of the screen cylinder frame 1 to improve the stability of the screen cylinder frame 1 when it rotates.

[0059] In some embodiments, such as Figure 5 As shown, a load-bearing component 5 is installed at the bottom of the mounting base 41; the load-bearing component 5 includes: a constraint frame 51, which is rotatably connected to the mounting base 41 via a pin, and a base plate 52 is fixedly connected to the bottom of the constraint frame 51; a telescopic component 53, which is fixedly connected to a card seat 531 at its bottom, and the bottom of the card seat 531 is fixedly connected to the base plate 52; and a limiting block 54, which is fixedly connected to the output end of the telescopic component 53 and is located between the mounting base 41 and the base plate 52.

[0060] Specifically, one side of the constraint frame 51 is open and the other side is closed, so that the mounting base 41 can only tilt in one direction. The base plate 52 supports the overall mechanism. The card seat 531 is used to fix the installation position of the telescopic component 53. The telescopic component 53 is used to drive the limit block 54 to move. When the limit block 54 is between the mounting base 41 and the base plate 52, it abuts against the bottom end of the mounting base 41 to prevent the mounting base 41 from tipping over.

[0061] In some embodiments, such as Figure 5 As shown, telescopic component 53 is an electric push rod;

[0062] Specifically, the telescopic component 53 adopts an electric push rod design to facilitate the lateral movement of the limit block 54 and its separation from the bottom of the mounting base 41. In addition, the telescopic component 53 can also be replaced by other telescopic structures.

[0063] In some embodiments, such as Figure 5 As shown, the end of the limiting block 54 away from the telescopic member 53 is machined with a bevel.

[0064] Specifically, when the limiting block 54 moves laterally, the mounting base 41 can tilt along the inclined surface of the limiting block 54 to facilitate the pouring out of the separated material in the screen cylinder frame 1.

[0065] In some embodiments, such as Figure 2 As shown, the rigid screen 22 is made of stainless steel.

[0066] Specifically, the rigid screen 22 can also be made of materials such as steel or manganese steel to screen crushed stone.

[0067] In some embodiments, such as Figure 2 As shown, the flexible screen 21 is made of polyurethane material.

[0068] Specifically, the flexible screen 21 is made of high-molecular polyurethane elastomer, which has high strength and toughness and can withstand large tensile and impact forces. The surface of the flexible screen 21 is smooth, and materials slide smoothly on it and are not easy to clog.

[0069] The working principle of this application is illustrated below with a preferred embodiment:

[0070] The crushed stone material to be screened is fed into the cylinder composed of the screening cylinder frame 1, flexible screen 21, and rigid screen 22. Then, the servo motor 431 is started. The servo motor 431 drives the drive shaft 43 to rotate in the mounting base 41 via a coupling. Simultaneously, the drive shaft 431 drives the first gear 432 to rotate, which in turn drives the second gear 44 to rotate. The second gear 44 drives the rotating shaft 411 to rotate in the mounting base 41, and simultaneously drives the screening cylinder frame 1 to rotate via the connecting piece 42. The servo motor 431... 31 controls the rotation range of the first gear 432 at the output end of the drive shaft 43, thereby causing the screening cylinder frame 1 to swing. Large-diameter crushed stone is screened through the hard screen 22 at the bottom of the screening cylinder frame 1. After screening, the telescopic component 53 is activated. The telescopic component 53 drives the limiting block 54 to move laterally. The limiting block 54 separates from the mounting base 41. Under the weight of the raw material in the screening cylinder frame 1, the mounting base 41 tilts along the inclined surface of the limiting block 54, thereby exporting the remaining raw material in the screening cylinder frame 1.

[0071] When wet aggregate needs to be screened, the fixed shell 421 and the plug-in block 422 are disassembled, the screening cylinder frame 1 is rotated 180°, and the flexible screen 21 is located at the bottom of the screening cylinder frame 1. The fixed shell 421 and the plug-in block 422 are then reconnected using bolts 423. The wet aggregate is then fed into the screening cylinder frame 1, and the swing of the screening cylinder frame 1 is controlled by the servo motor 431, thereby allowing the flexible screen 21 to screen the wet aggregate.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A screening device for concrete production, characterized in that, include: Screening cylinder frame (1), with screening components (2) arranged on the outer periphery of the screening cylinder frame (1); The screening component (2) includes: A flexible screen (21) is used for screening wet viscous aggregates. The flexible screen (21) has multiple reinforcing ribs (211) evenly distributed radially. Both ends of the multiple reinforcing ribs (211) are fixedly connected to the screen cylindrical skeleton (1). A rigid screen (22) is used to screen large-diameter gravel; The flexible screen (21) and the rigid screen (22) are symmetrically distributed based on the axis of the screening cylindrical skeleton (1); The flexible screen (21) and the rigid screen (22) together with the screen material cylindrical skeleton (1) form a cylindrical structure.

2. The screening device for concrete production according to claim 1, characterized in that, The screening cylinder frame (1) is equipped with a swing component (4), which is used to drive the screening cylinder frame (1) to swing in order to screen materials. The swing assembly (4) includes: Mounting base (41), in which a rotating shaft (411) is rotatably connected, the rotating shaft (411) is connected to the screen cylinder frame (1) through a connector (42); A drive shaft (43) is connected to the mounting base (41) via a bearing. The drive shaft (43) is arranged parallel to the rotating shaft (411). A servo motor (431) is configured at the input end of the drive shaft (43). The bottom end of the servo motor (431) is fixedly connected to the mounting base (41). A first gear (432) is fixedly connected at the output end of the drive shaft (43). The second gear (44) has its center hole fixedly connected to the rotating shaft (411), and its outer periphery meshes with the first gear (432).

3. A screening device for the production of concrete according to claim 2, characterized in that, The connector (42) includes: A fixed housing (421) is fixedly connected to the output end of the rotating shaft (411), and a rectangular groove (421a) is provided in the fixed housing (421). The plug-in block (422) is fixedly connected to the sealing end of the screen cylinder frame (1). The plug-in block (422) is adapted to the rectangular groove (421a). The plug-in block (422) is connected to the fixed shell (421) by bolts (423).

4. A screening device for concrete production according to claim 3, characterized in that, The bolts (423) are symmetrically distributed based on the fixed shell (421).

5. A screening device for concrete production according to claim 2, characterized in that, The mounting base (41) is equipped with an auxiliary support (3), which is used to increase the stability of the screen cylinder skeleton (1) when it swings. The auxiliary support (3) includes: Two support rods (31), one end of each support rod (31) is fixedly connected to the mounting base (41), and the other end of each support rod (31) is fixedly connected to an arc-shaped bracket (32). Two rollers (321) are arranged in the groove of the arc-shaped support (32), and the outer periphery of the two rollers (321) abuts against the screen cylindrical skeleton (1).

6. A screening device for concrete production according to claim 2, characterized in that, The mounting base (41) is equipped with a load-bearing component (5) at its bottom end. The carrier component (5) includes: The constraint frame (51) is rotatably connected to the mounting base (41) via a pin, and a base plate (52) is fixedly connected to the bottom end of the constraint frame (51). Telescopic component (53), the bottom end of which is fixedly connected to a card seat (531), the bottom end of which is fixedly connected to the base plate (52); Limiting block (54), the limiting block (54) is fixedly connected to the output end of the telescopic member (53), and the limiting block (54) is located between the mounting base (41) and the base plate (52).

7. A screening device for concrete production according to claim 6, characterized in that, The telescopic component (53) is an electric push rod.

8. A screening device for concrete production according to claim 6, characterized in that, The end of the limiting block (54) away from the telescopic member (53) is machined with a bevel.

9. A screening device for concrete production according to claim 1, characterized in that, The rigid screen (22) is made of stainless steel.

10. A screening device for concrete production according to claim 1, characterized in that, The flexible screen (21) is made of polyurethane material.

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