Phosphogypsum light aggregate particle gradation screening device

Abstract

The utility model relates to a kind of phosphogypsum light aggregate particle gradation screening device, including rotary screen, screen cylinder, feed hopper and discharge chute, the rotary screen is provided with the cleaning structure for cleaning screen cylinder blockage. The phosphogypsum light aggregate particle gradation screening device, by being provided with cleaning structure, the combination of screen cylinder rotation and fan arc brush cylinder is realized, to combine screening process and automatic cleaning function, the power source of screening is used to drive cleaning function, and the reciprocating motion of cleaning roller is driven by double-shaft air cylinder up and down, cooperate with fan arc distribution brush cylinder, can increase the surface area of screen cylinder, to remove jammed particles in time using brush cylinder, to achieve comprehensive cleaning jam, further using the friction of brush cylinder and screen cylinder after contact, brush cylinder is driven to adaptively roll, reduce the damage of hard friction to screen cylinder, prolong the service life of brush cylinder, reach in the screening efficiency while improving, equipment durability and operation convenience are considered.

Description

Technical Field

[0001] This utility model relates to the field of phosphogypsum lightweight aggregate production technology, specifically a phosphogypsum lightweight aggregate particle size distribution screening device. Background Technology

[0002] Phosphogypsum lightweight aggregate is a lightweight granular material prepared mainly from phosphogypsum. It has unique application value in construction, environmental protection and other fields. Its preparation process includes washing, drying and calcination, granulation and molding, and screening and grading. The purpose of screening and grading is to ensure that the particle size distribution of the lightweight aggregate is uniform and meets the gradation requirements of different application scenarios. For example, when used in concrete, the particle size usually needs to be controlled between 5-20 mm, and the proportion of each particle size should meet the specifications. Screening removes oversized or undersized particles to avoid problems such as uneven density and strength fluctuations caused by particle size differences, thereby improving the overall uniformity of the material. Screening methods for phosphogypsum lightweight aggregate include gravity screening, vibrating screening and centrifugal screening.

[0003] Chinese Patent Publication No. CN110216069B discloses an automatically cleaning drum screen, which cleans the clogged mesh holes on the drum by having a brush plate contact the rotating drum. However, in actual use, the continuous compression of the brush bristles during drum rotation causes the bristles to deform, preventing them from inserting into the partially clogged mesh holes. This results in some of the clogged material not being cleaned properly, and the hard friction shortens the service life of the brush plate. Therefore, a phosphogypsum lightweight aggregate particle size distribution screening device is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a phosphogypsum lightweight aggregate particle size distribution screening device, which has the advantage of automatically cleaning the clogged mesh holes on the drum. This solves the problem that in actual use, due to the continuous compression of the brush bristles on the brush plate during the drum rotation, the bristles deform and cannot be inserted into the partially clogged mesh holes, resulting in some of the clogged material not being cleaned properly.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a phosphogypsum lightweight aggregate particle gradation screening device, comprising a drum screen, a screen cylinder, a feed hopper and a discharge chute, wherein the drum screen is provided with a cleaning structure for clearing screen cylinder blockage;

[0006] The cleaning structure includes an installation frame fixedly installed on a drum screen. Two support plates are fixedly installed inside the installation frame. Three cleaning rollers for cleaning screen blockages are arranged between the two support plates. Arc-shaped frames connected to the cleaning rollers are slidably installed on both sides of the installation frame. Guide frames that are fixedly connected to the two arc-shaped frames are slidably installed on the installation frame.

[0007] The mounting frame has two rectangular slots that fit the guide frame, and each of the two support plates has three guide slots. One end of the cleaning roller passes through the guide slot and extends into the interior of the arc frame, and the guide slots and guide grooves are slidably connected to the cleaning roller.

[0008] Furthermore, a dual-axis cylinder for controlling the up-and-down movement of the guide frame is fixedly installed on the mounting frame, and the telescopic end of the dual-axis cylinder is fixedly connected to the guide frame. Two positioning rods penetrating the guide frame are fixedly installed on the mounting frame, and the positioning rods are slidably connected to the guide frame.

[0009] Furthermore, the three cleaning rollers are composed of a shaft and three equally spaced brush cylinders, with the brush cylinders rotatably mounted on the shaft.

[0010] Furthermore, two limiting rods are fixedly installed on each of the two arc-shaped frames, and four limiting holes adapted to the limiting rods are provided on the mounting frame. One end of the limiting rod passes through the limiting hole and is slidably connected to it.

[0011] Furthermore, the included angle between the three guide grooves on the support plate is sixty degrees, and the three cleaning rollers are distributed in a fan-shaped arc.

[0012] Furthermore, the screen cylinder is rotatably installed inside the drum screener, the discharge slide is fixedly installed at one end of the drum screener, and the feed hopper is fixedly installed on the drum screener.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This phosphogypsum lightweight aggregate particle size distribution screening device, through the inclusion of a cleaning structure, combines a rotating screen cylinder with a fan-shaped brush cylinder, thus integrating the screening process with an automatic cleaning function. The cleaning function is driven by the screening power source, and the cleaning rollers reciprocate up and down via a dual-shaft cylinder. Combined with the fan-shaped distributed brush cylinders, this increases the surface area covered by the screen cylinder, allowing the brush cylinders to promptly remove clogging particles, achieving comprehensive cleaning. Furthermore, the friction between the brush cylinders and the screen cylinder causes the brush cylinders to roll adaptively, reducing damage to the screen cylinder from hard friction and extending the service life of the brush cylinders. This achieves a balance between improved screening efficiency and equipment durability and ease of operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the cleaning structure of this utility model;

[0017] Figure 3This is an exploded view of the cleaning structure of this utility model;

[0018] Figure 4 This is an exploded view of the arc-shaped frame, cleaning roller, and support plate of this utility model.

[0019] In the diagram: 1. Rotary drum screen; 2. Screen cylinder; 3. Feed hopper; 4. Discharge chute; 5. Cleaning structure; 51. Mounting frame; 511. Rectangular trough; 52. Support plate; 521. Guide trough; 53. Cleaning roller; 531. Brush cylinder; 54. Arc frame; 541. Limiting rod; 55. Guide frame; 56. Dual-shaft cylinder; 57. Positioning rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figure 1-4 The phosphogypsum lightweight aggregate particle gradation screening device in this embodiment includes a drum screen 1, a screen cylinder 2, a feed hopper 3, and a discharge chute 4. The drum screen 1 is provided with a cleaning structure 5 for cleaning blockages in the screen cylinder 2. The screen cylinder 2 is rotatably installed inside the drum screen 1. The discharge chute 4 is fixedly installed at one end of the drum screen 1. The feed hopper 3 is fixedly installed on the drum screen 1.

[0022] Example 2: Please refer to Figure 1-4 Based on Embodiment 1, the cleaning structure 5 includes a mounting frame 51 fixedly installed on the drum screen 1. Two support plates 52 are fixedly installed inside the mounting frame 51. Three cleaning rollers 53 for cleaning the blockage of the screen cylinder 2 are arranged between the two support plates 52. Arc-shaped frames 54 connected to the cleaning rollers 53 are slidably installed on both sides of the mounting frame 51. Guide frames 55 fixedly connected to the two arc-shaped frames 54 are slidably installed on the mounting frame 51.

[0023] The mounting frame 51 has two rectangular slots 511 that are adapted to the guide frame 55. Each of the two support plates 52 has three guide slots 521. One end of the cleaning roller 53 passes through the guide slot 521 and extends into the interior of the arc frame 54. The guide slots 521 and 521 are slidably connected to the cleaning roller 53.

[0024] Among them, the three cleaning rollers 53 are composed of a shaft and three equally spaced brush cylinders 531, and the brush cylinders 531 are rotatably mounted on the shaft. The three equally spaced brush cylinders 531 are adapted to the multi-stage screening of the screen cylinder 2.

[0025] In addition, two limiting rods 541 are fixedly installed on each of the two arc-shaped frames 54. The mounting frame 51 has four limiting holes that are adapted to the limiting rods 541. One end of the limiting rod 541 passes through the limiting hole and is slidably connected to it. The arc-shaped frame 54 slides in the limiting hole through the limiting rod 541, which further ensures the motion accuracy.

[0026] It should be noted that the included angle between the three guide grooves 521 on the support plate 52 is 60 degrees, and the three cleaning rollers 53 are distributed in a fan-shaped arc. The fan-shaped arc distribution makes the three cleaning rollers 53 form a semi-enclosed structure, which has a larger coverage area and no dead corners in cleaning compared to a single cleaning component.

[0027] Using the above technical solution, the three cleaning rollers 53 are distributed in a fan-shaped arc at a 60-degree angle and move downward synchronously with the arc frame 54. The brush cylinder 531 in the cleaning roller 53 rolls against the outer wall of the screen cylinder 2. Since the brush cylinder 531 can rotate around the shaft, it rubs against the screen cylinder 2 during rotation, thereby driving the brush cylinder 531 to rotate. The bristles of the brush cylinder 531 are inserted into the screen holes of the screen cylinder 2, thereby clearing the blocked material. Moreover, the brush cylinder 531 can roll adaptively when it contacts the screen cylinder 2, reducing the damage to the screen cylinder 2 caused by hard friction and further improving the service life of the brush cylinder 531.

[0028] Example 3: Please refer to Figure 1-4 Based on Embodiment 2, a dual-axis cylinder 56 for controlling the up-and-down movement of the guide frame 55 is fixedly installed on the mounting frame 51, and the telescopic end of the dual-axis cylinder 56 is fixedly connected to the guide frame 55. Two positioning rods 57 that penetrate the guide frame 55 are fixedly installed on the mounting frame 51, and the positioning rods 57 are slidably connected to the guide frame 55.

[0029] Using the above technical solution, when the screen holes of the screen cylinder 2 are blocked, the dual-shaft cylinder 56 is started, and its telescopic end pushes the guide frame 55 to slide up and down in the rectangular groove 511. The positioning rod 57 ensures the stability of the guide frame 55 when it moves and avoids deviation. The guide frame 55 drives the arc-shaped frames 54 on both sides to move up and down synchronously. The arc-shaped frames 54 slide in the limiting hole through the limiting rod 541 to further ensure the motion accuracy, thereby realizing the control of the cleaning roller 53 to move closer to or away from the screen cylinder 2.

[0030] The working principle of the above embodiments is as follows:

[0031] In use, the phosphogypsum lightweight aggregate particle size distribution screening device allows the phosphogypsum lightweight aggregate to enter the screen cylinder 2 from the feed hopper 3. The drum screener 1 drives the screen cylinder 2 to rotate. As the particles roll inside the screen cylinder 2, they are classified according to their particle size through the screen holes. The fine particles fall through the screen holes into the discharge chute 4, thus completing the screening.

[0032] When the screen holes of the screen cylinder 2 are blocked, the dual-shaft cylinder 56 is activated, and its telescopic end pushes the guide frame 55 to slide downward in the rectangular groove 511. The positioning rod 57 ensures the stability of the guide frame 55 when it moves and avoids deviation. The guide frame 55 drives the arc frames 54 on both sides to move up and down synchronously. The arc frames 54 slide in the limiting hole through the limiting rod 541 to further ensure the motion accuracy.

[0033] The three cleaning rollers 53 are arranged in a fan-shaped arc at a 60-degree angle and move downward synchronously with the arc frame 54. The brush cylinders 531 in the cleaning rollers 53 roll against the outer wall of the screen cylinder 2. Since the brush cylinders 531 can rotate around the shaft, they rub against the screen cylinder 2 during rotation, thereby driving the brush cylinders 531 to rotate. The bristles of the brush cylinders 531 are inserted into the screen holes of the screen cylinder 2, thereby clearing the blocked material. Moreover, the brush cylinders 531 can roll adaptively when in contact with the screen cylinder 2, reducing the damage to the screen cylinder 2 caused by hard friction and further improving the service life of the brush cylinders 531.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A particle size distribution screening device for phosphogypsum lightweight aggregate, comprising a drum screen (1), a screen cylinder (2), a feed hopper (3), and a discharge chute (4), characterized in that: The drum screen (1) is equipped with a cleaning structure (5) for cleaning the blockage of the screen cylinder (2); The cleaning structure (5) includes a mounting frame (51) fixedly installed on the drum screen (1). Two support plates (52) are fixedly installed inside the mounting frame (51). Three cleaning rollers (53) for cleaning the screen cylinder (2) are arranged between the two support plates (52). Arc-shaped frames (54) connected to the cleaning rollers (53) are slidably installed on both sides of the mounting frame (51). Guide frames (55) fixedly connected to the two arc-shaped frames (54) are slidably installed on the mounting frame (51). The mounting frame (51) has two rectangular grooves (511) adapted to the guide frame (55), and the two support plates (52) each have three guide grooves (521). One end of the cleaning roller (53) passes through the guide groove (521) and extends into the interior of the arc frame (54), and the guide groove (521) and the guide groove (521) are slidably connected to the cleaning roller (53).

2. The phosphogypsum lightweight aggregate particle size distribution screening device according to claim 1, characterized in that: A dual-axis cylinder (56) for controlling the up-and-down movement of the guide frame (55) is fixedly installed on the mounting frame (51), and the telescopic end of the dual-axis cylinder (56) is fixedly connected to the guide frame (55). Two positioning rods (57) that penetrate the guide frame (55) are fixedly installed on the mounting frame (51), and the positioning rods (57) are slidably connected to the guide frame (55).

3. The phosphogypsum lightweight aggregate particle size distribution screening device according to claim 1, characterized in that: The three cleaning rollers (53) consist of a shaft and three equally spaced brush cylinders (531), with the brush cylinders (531) rotatably mounted on the shaft.

4. The phosphogypsum lightweight aggregate particle size distribution screening device according to claim 1, characterized in that: Two limiting rods (541) are fixedly installed on each of the two arc-shaped frames (54). The mounting frame (51) has four limiting holes that are adapted to the limiting rods (541). One end of the limiting rod (541) passes through the limiting hole and is slidably connected to it.

5. The phosphogypsum lightweight aggregate particle size distribution screening device according to claim 1, characterized in that: The included angle between the three guide grooves (521) on the support plate (52) is sixty degrees, and the three cleaning rollers (53) are distributed in a fan-shaped arc.

6. The phosphogypsum lightweight aggregate particle size distribution screening device according to claim 1, characterized in that: The screen cylinder (2) is rotatably installed inside the drum screen (1), the discharge slide (4) is fixedly installed at one end of the drum screen (1), and the feed hopper (3) is fixedly installed on the drum screen (1).

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