Automatic roller screen system and operation method thereof

Abstract

The invention provides an automatic roller screen system and an operation method thereof.The automatic roller screen system comprises a roller screen mechanism, a material cleaning mechanism and a controller, the material cleaning mechanism is arranged at the bottom end of the roller screen mechanism, and the roller screen mechanism and the material cleaning mechanism are both electrically connected with the controller; the roller screen mechanism comprises a plurality of screen rollers arranged in parallel and a motor used for driving the screen rollers to rotate, the material cleaning mechanism comprises scraping pieces and a lifter, the scraping pieces are arranged below the screen rollers, the scraping pieces are installed at the top end of the lifter, and pressure sensors are installed between the scraping pieces and the lifter. The material cleaning mechanism is arranged at the bottom end of the screen roller, the lifter is used for driving the scraper to lift, meanwhile, the pressure sensor is installed between the scraper and the lifter, the material cleaning condition can be fed back and judged through the pressure sensor, the abrasion condition of the screen roller can be judged through lifting of the scraper, and when the lifter drives the scraper to lift to the maximum distance, the scraper can be lifted to the maximum distance. And if the pressure sensor has no pressure feedback, detecting that the screen roller is abraded.

Description

Technical Field

[0001] The present invention relates to the technical field of material screening equipment, and in particular to an automated roller screening system and an operating method thereof. Background Art

[0002] In the process of industrial production and processing, material screening is a basic and important process. Traditional screening equipment mainly includes vibrating screens, drum screens, etc., which separate materials of different particle sizes through physical movement. However, with the expansion of production scale and the development of technology, traditional manual or semi-automatic screening methods can no longer meet the needs of efficient and continuous production in modern industry. Especially when dealing with materials with high viscosity or easy to agglomerate, materials are easily accumulated on the surface of the screen roller, resulting in reduced screening efficiency or even blockage. For this reason, many screening equipment have introduced cleaning mechanisms, such as scrapers, brushes, etc., to clean the residues on the screen surface. However, most of the existing cleaning mechanisms rely on manual regular inspection and manual adjustment, which is not only labor-intensive, but also cannot guarantee the timeliness and effectiveness of cleaning. In addition, due to long-term use, the surface of the screen roller may be worn. If the worn screen roller is not found and replaced in time, it will seriously affect the screening quality and equipment life. At present, the wear detection of the screen roller still adopts the method of regular manual inspection. This method is not only time-consuming and labor-intensive, but also easy to miss the best time for maintenance. Summary of the invention

[0003] The object of the present invention is to provide an automated roller screening system and an operating method thereof, so as to realize automated cleaning of screen roller attachments and identification of screen roller wear.

[0004] The present invention provides an automated roller screening system, comprising a roller screening mechanism, a material cleaning mechanism and a controller, wherein the material cleaning mechanism is arranged at the bottom end of the roller screening mechanism, and both the roller screening mechanism and the material cleaning mechanism are electrically connected to the controller, the roller screening mechanism comprises a plurality of parallel screen rollers and a motor for driving the screen rollers to rotate, the material cleaning mechanism comprises a scraper and a lifter, the scraper is arranged under each of the screen rollers, the scraper is installed at the top end of the lifter, and a pressure sensor is installed between the scraper and the lifter.

[0005] Furthermore, the roller screening mechanism also includes slide rails symmetrically arranged at both ends of the screen roller, the top end of the slide rail is provided with a slide groove along its length direction, a bearing seat is adjustably installed in the slide groove, and the two ends of the screen roller are respectively installed on the two bearing seats.

[0006] Furthermore, a magnetic base is provided at the bottom end of the bearing seat, and a strong magnetic plate is provided on the slide rail at the bottom end inside the slide groove, and the strong magnetic plate is fixedly installed at the bottom end inside the slide groove.

[0007] Furthermore, an alarm is also included, and the alarm is electrically connected to the pressure sensor through the sensor.

[0008] Furthermore, the scraper blade is made of polyurethane material.

[0009] Furthermore, the screen roller is fixedly connected to the output shaft of the motor via a coupling.

[0010] Furthermore, the motor is a variable frequency motor, and one end of each of the screen rollers is correspondingly provided with the variable frequency motor.

[0011] Furthermore, the pressure sensor is a strain gauge sensor.

[0012] Furthermore, the lifter is an electric cylinder or a pneumatic cylinder.

[0013] An operating method of an automated roller screening system, including an automated roller screening system, the specific operating method is as follows:

[0014] S1: When the controller recognizes that the motor power becomes larger, it starts the cleaning mechanism, the lifter drives the scraper to rise, and the cleaning situation is judged through the feedback of the pressure sensor;

[0015] S2: When the lifter drives the scraper to the maximum distance and there is no pressure feedback from the pressure sensor to the controller, the feedback is the screen roller wear signal.

[0016] The beneficial effect of the technical solution is as follows: by arranging a material cleaning mechanism at the bottom end of the screen roller, using a lifter to drive the scraper blade to lift, and installing a pressure sensor between the scraper blade and the lifter, not only can the material cleaning situation be judged by the feedback of the pressure sensor, but also the wear condition of the screen roller can be judged by the lifting of the scraper blade. When the lifter drives the scraper blade to lift to the maximum distance, if there is no pressure feedback from the pressure sensor, it is detected that the screen roller is worn, which is convenient for timely replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the top structure of the present invention.

[0019] Description of the accompanying drawings: 1-screen roller, 2-motor, 3-slide rail, 301-slide groove, 4-bearing seat, 5-scraper. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Example 1

[0024] like Figure 1 As shown, the present invention provides an automated roller screening system, including a roller screening mechanism, a material cleaning mechanism and a controller, wherein the material cleaning mechanism is arranged at the bottom end of the roller screening mechanism, and the roller screening mechanism and the material cleaning mechanism are both electrically connected to the controller, and the roller screening mechanism includes a plurality of parallel screen rollers 1 and a motor 2 for driving the screen rollers 1 to rotate, wherein the screen rollers 1 and the output shafts of the motors 2 are fixedly connected through a coupling, and the motors 2 are variable frequency motors 2, and one end of each screen roller 1 is correspondingly provided with a variable frequency motor 2. The two ends of the screen roller 1 are mounted on the slide rails 3 through bearing seats 4, and the specific structure is that the slide rails 3 are arranged at both ends of the screen roller 1, and the top end of the slide rail 3 is provided with a slide groove 301 along its length direction, and the bearing seat 4 is adjustably installed in the slide groove 301, so that the bearing seat 4 can slide in the slide groove 301, and the two ends of the screen roller 1 are respectively mounted on two bearing seats 4.

[0025] A magnetic base is provided at the bottom end of the bearing seat 4, and a strong magnetic plate is provided on the slide rail 3 at the bottom end inside the slide groove 301. The strong magnetic plate is fixedly installed at the bottom end inside the slide groove 301. The strong magnetic plate can be energized to achieve adsorption and fixation of the bearing seat 4, which is convenient for adjusting the spacing and position between adjacent screen rollers 1, and is convenient for rapid replacement of the screen rollers 1. The position of the worn screen rollers 1 can also be adjusted according to actual use conditions to ensure the gap distance between the screen rollers 1, thereby ensuring the screening effect of the roller screen, extending the service life of the entire roller screen, and reducing production costs.

[0026] The material cleaning mechanism includes a scraper 5 and a lifter. The scraper 5 is made of polyurethane material. The lifter is an electric cylinder or a pneumatic cylinder. The cylinder can be extended and retracted by a controller to drive the scraper 5 to rise and fall. A scraper 5 is provided under each screen roller 1. The scraper 5 is installed on the top of the lifter. A pressure sensor is installed between the scraper 5 and the lifter. The pressure sensor in this embodiment is a strain gauge sensor. It can not only judge the material cleaning situation through the feedback of the pressure sensor, but also be used to distinguish whether the screen roller 1 is seriously worn. When the lifter drives the scraper 5 to rise to the maximum distance, if there is no pressure feedback from the pressure sensor, it proves that the screen roller 1 is worn, which is convenient for timely replacement.

[0027] The present technical solution also provides an operating method for an automated roller screening system, including an automated roller screening system, and the specific operating method is as follows: when the screen roller 1 is running, the controller recognizes that the power of the motor 2 becomes larger, and starts the material cleaning mechanism, the lifter drives the scraper 5 to rise, and the material cleaning situation is judged by the feedback of the pressure sensor; when the lifter drives the scraper 5 to rise to the maximum distance, and there is no pressure feedback from the pressure sensor to the controller, it is determined that the screen roller 1 is worn, and the controller controls the alarm to send an alarm signal.

[0028] The system determines whether the roller screen is sticky through the power feedback of the frequency conversion motor 2. If the power of the frequency conversion motor 2 increases, it is determined that the roller screen is sticky, and then the cleaning mechanism is activated, and the lifter is used to drive the scraper 5 to lift toward the screen roller 1. The cleaning situation is determined by the pressure feedback of the pressure sensor. At the same time, the lifter is set with a maximum action distance, for example 3mm. If the lifting distance of the scraper 5 reaches 3mm but there is no pressure feedback, it is determined that the screen roller 1 is worn and needs to be replaced. The actuator is connected to the alarm and directly reaches the operating post and the central control room to remind the operator to replace the screen roller 1.

[0029] Example 2

[0030] The technical feature that distinguishes this embodiment from Embodiment 1 is that the system also includes an alarm, which is electrically connected to the pressure sensor through a sensor. When the lifter drives the scraper 5 to rise to the maximum distance and there is no pressure feedback from the pressure sensor, the feedback is a screen roller wear signal, and the alarm sends an alarm signal to remind the staff to replace the screen roller 1.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automated roller screening system, characterized in that: It includes a roller screening mechanism, a material cleaning mechanism and a controller. The material cleaning mechanism is arranged at the bottom end of the roller screening mechanism. The roller screening mechanism and the material cleaning mechanism are electrically connected to the controller. The roller screening mechanism includes a plurality of parallel screen rollers and a motor for driving the screen rollers to rotate. The material cleaning mechanism includes a scraper and a lifter. The scraper is arranged under each of the screen rollers. The scraper is installed at the top of the lifter. A pressure sensor is installed between the scraper and the lifter.

2. The automated roller screening system according to claim 1, characterized in that: The roller screening mechanism also includes slide rails symmetrically arranged at both ends of the screen roller, a slide groove is opened at the top end of the slide rail along its length direction, a bearing seat is adjustably installed in the slide groove, and the two ends of the screen roller are respectively installed on the two bearing seats.

3. The automated roller screening system according to claim 2, characterized in that: A magnetic base is provided at the bottom end of the bearing seat, and a strong magnetic plate is provided on the slide rail at the bottom end inside the slide slot, and the strong magnetic plate is fixedly installed at the bottom end inside the slide slot.

4. The automated roller screening system according to claim 1, characterized in that: An alarm is also included, and the alarm is electrically connected to the pressure sensor through the sensor.

5. The automated roller screening system according to claim 1, characterized in that: The scraper blade is made of polyurethane material.

6. The automated roller screening system according to claim 1, characterized in that: The screen roller is fixedly connected to the output shaft of the motor via a coupling.

7. The automated roller screening system according to claim 1, characterized in that: The motor is a variable frequency motor, and one end of each of the screen rollers is correspondingly provided with the variable frequency motor.

8. The automated roller screening system according to claim 1, characterized in that: The pressure sensor is a strain gauge sensor.

9. The automated roller screening system according to claim 1, characterized in that: The lifter is an electric cylinder or a pneumatic cylinder.

10. A method for operating an automated roller screen system, characterized in that: The automated roller screening system according to any one of claims 1 to 9 is specifically operated as follows: S1: When the controller recognizes that the motor power becomes larger, it starts the cleaning mechanism, the lifter drives the scraper to rise, and the cleaning situation is judged through the feedback of the pressure sensor; S2: When the lifter drives the scraper to the maximum distance and there is no pressure feedback from the pressure sensor to the controller, the feedback is the screen roller wear signal.

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