Roller speed detection device for roller kiln

Abstract

The utility model discloses a roller speed detection device for a roller kiln, which is applied to roller bars and a base, a plurality of roller bars which are sequentially arranged at intervals are mounted on the base, and speed detection mechanisms are mounted at two ends of the plurality of roller bars behind a power starting position of the roller bars. The speed detection mechanism further comprises a unit speed detection device and a control device, the unit speed detection device is in telecommunication connection with the control device, and the control device is in telecommunication connection with a central controller of the roller kiln. Each unit speed detection device comprises a magnetic belt on which a plurality of magnetic points are uniformly distributed at intervals and a sensor capable of sensing the magnetic points, the magnetic belts are mounted at the two ends of the roller rod, and the sensor is mounted on the base below the magnetic belts. The function of the device is that the device detects the accuracy of the sintering period by monitoring the rotating speed of the roller bars at each group of transmission motors of the kiln in real time.

Description

Technical Field

[0001] The utility model patent belongs to the technical field of heat treatment kilns, and specifically relates to a roller kiln roller speed detection device. Background Art

[0002] The roller kiln, also known as the roller bottom kiln, is a continuous firing tunnel kiln that uses rotating refractory rollers as a carrier. The product (material) is placed on multiple rollers arranged at horizontal intervals. The rotation of the rollers drives the product through the furnace of the roller kiln to complete the sintering.

[0003] During the roller kiln sintering process, the material running speed (that is, the speed at which the material passes through the furnace) is an important process parameter. The material running speed needs to be frequently detected, adjusted and corrected to make the material running speed consistent with the set process parameters. Since the material is in the furnace with a high temperature environment, it is difficult to detect and identify it.

[0004] The existing method of detecting the material running speed is to use the principle of contact induction monitoring. A sensing device is installed on each roller. The roller will contact the spring every time it rotates. When it cannot contact the spring sheet and the time exceeds the set time for the roller to rotate one circle, the broken rod detection system will alarm and the broken rod will be displayed on the touch screen in real time.

[0005] However, the inventor found that the above method has an alarm time error. The reason is that the springs deform during use, or the fixing bolts loosen, causing the two springs to shift one after the other. In addition, since the roller contact sensing monitoring requires the two springs to contact at the same time, the system senses that the roller rotates for a longer time, exceeding the set alarm time, and thus a false alarm occurs. In order to avoid frequent false alarms in the system, the system sets the alarm time to be longer than the actual roller rotation time, resulting in an alarm time error.

[0006] This will cause transmission system failure: because in the transmission system, the roller bevel gear transmission is occasionally unstable, and the relative sliding between the transmission chain and the sprocket leads to uneven rotation speed of the roller of the entire kiln. If it is not detected or the alarm is not timely, it will cause the sagger problem, the saggers push and pile up against each other in the furnace, the rollers and saggers slip, and the sagger speed is inconsistent with the roller speed, causing serious wear of the rollers and saggers. At the same time, it will also cause kiln program errors, because the actual speed of the transmission system is different from the speed displayed on the panel, which will cause periodic errors. Therefore, every time the transmission system fails, the kiln sintering cycle will be changed, and it will also greatly affect the working efficiency of the roller kiln.

[0007] Therefore, the utility model designs a roller kiln roller speed detection device. Utility Model Content

[0008] In order to solve the above technical problems, the utility model provides a roller kiln roller speed monitoring device, which checks the accuracy of the sintering cycle by real-time monitoring the roller speed of each group of transmission motors of the kiln.

[0009] In order to achieve the above technical effects, the utility model is implemented through the following technical solutions: a roller kiln roller speed detection device is applied to rollers and a base, a plurality of rollers arranged in sequence are installed on the base, and speed detection mechanisms are installed at both ends of the plurality of rollers behind the starting point of the roller power. The speed detection mechanism also includes a unit speed detection device and a control device. The unit speed detection device is connected to the control device by telecommunication, and the control device is connected to the central controller of the roller kiln by telecommunication; the unit speed detection device includes a magnetic belt with a plurality of magnetic points evenly distributed at intervals and a sensor that can sense the magnetic points. The magnetic belt is installed at both ends of the roller, and the sensor is installed on the base below the magnetic belt.

[0010] Preferably, the control device also includes a machine base, a processor, an audible and visual alarm, a display, control buttons, and a power supply. The machine base can be magnetically attracted to the outside of the roller kiln. The processor, the audible and visual alarm, the display, and the control buttons are installed in the machine base. The processor is connected to the audible and visual alarm, the display, the control buttons, the sensor, and the central controller by telecommunication. The power supply provides power to the processor, the audible and visual alarm, the display, and the control buttons.

[0011] Preferably, the magnetic point is configured as a magnet.

[0012] Preferably, the magnetic belt can be fastened to the sides of both ends of the roller by screws.

[0013] Preferably, the magnetic belt can be bonded to the sides of both ends of the roller by means of high temperature resistant adhesive.

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

[0015] The device verifies the accuracy of the sintering cycle by real-time monitoring of the roller speed at each group of transmission motors in the kiln, avoiding the alarm time error of the traditional passive side-sensing contact monitoring alarm device. When the actual monitoring speed of the roller displayed on the display in the control device is inconsistent with the motor transmission speed displayed on the central control panel, it can promptly alarm and notify the staff to check whether there is relative sliding between the transmission chain and the sprocket in the transmission system, and check the engagement of the helical gears of the main transmission structure to avoid the occurrence of arching problems. At the same time, if the speeds at both ends of the same roller are different, it can also promptly alarm and notify the staff to check whether the roller is broken. From the above, it can be seen that the device can promptly detect and solve the above abnormal situations, reduce losses, ensure the accuracy of sintering process parameters, and ensure product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for describing the embodiment will be briefly introduced below. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

[0017] Figure 1 This is a structural diagram of a roller speed detection device for installing a magnetic belt by screw fastening according to the utility model;

[0018] Figure 2 This is a structural diagram of a roller speed detection device for bonding a magnetic belt with a high temperature resistant adhesive according to the utility model;

[0019] Figure 3 It is a structural block diagram of the control device of the utility model;

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Roller; 2. Base; 3. Magnetic point; 4. Magnetic belt; 5. Sensor; 6. Screw. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. Example 1

[0023] like Figures 1 to 3 As shown, in this embodiment, the prior art has the following problems: the inventors found that the roller speed detection method in the prior art has an alarm time error, which will cause a transmission system failure;

[0024] Therefore, the inventor provides a roller kiln roller speed detection device, which is applied to a roller 1 and a base 2. A plurality of rollers 1 arranged in sequence are installed on the base 2, and speed detection mechanisms are installed at both ends of the plurality of rollers 1 behind the power starting point of the roller 1. The speed detection mechanism also includes a unit speed detection device and a control device. The unit speed detection device is connected to the control device by telecommunication, and the control device is connected to the central controller of the roller kiln by telecommunication; the unit speed detection device includes a magnetic belt 4 with a plurality of magnetic points 3 evenly distributed at intervals, and a sensor 5 that can sense the magnetic points 3. The magnetic belt 4 is installed at both ends of the roller 1, and the sensor 5 is installed on the base 2 below the magnetic belt 4.

[0025] When the device is in use, several rollers 1 are selected at each group of transmission motors for installation of speed monitoring devices. When the roller 1 rotates, the sensor 5 and the magnetic point 3 are close to each other to send out an electric pulse signal, and the processor will calculate the real-time speed of the roller 1 and the distance traveled by the carried material according to the signal; when the actual monitoring speed of the roller 1 displayed on the display of the control device is inconsistent with the motor transmission speed displayed on the central control panel, an alarm can be issued in time to notify the staff to check whether there is relative sliding between the transmission chain and the sprocket in the transmission system, and to check the meshing of the helical gears of the main transmission structure to avoid the occurrence of arching problems. At the same time, if the speeds of the two ends of the same roller 1 are different, an alarm can be issued in time to notify the staff to check whether the roller 1 is broken; from the above, it can be seen that the device can detect and solve the above abnormal conditions in time, reduce losses, ensure the accuracy of sintering process parameters, and ensure product quality.

[0026] The calculation principle is as follows: when the roller 1 rotates, as long as the magnet comes above the sensor 5, the sensor 5 converts the magnetic signal into a pulse electrical signal, generating a pulse signal each time. The processor of the control device measures the number of pulse signals and the pulse period. The speed V=D / T of the roller 1 can be calculated through the period T of the pulse signal and the outer diameter D of the roller 1. The distance s=n×t×D / T that the roller 1 travels carrying materials within the specified time t can be calculated through the number of pulse signals n. The accuracy of the kiln cycle can also be verified, and the calculated value is displayed on the display. Example 2

[0027] like Figures 1 to 3 As shown, based on the above embodiments, the control device provided in this embodiment also includes a machine base, a processor, an audible and visual alarm, a display, a control button, and a power supply. The machine base can be magnetically attracted to the outside of the roller kiln. The machine base is equipped with a processor, an audible and visual alarm, a display, and a control button. The processor is connected to the audible and visual alarm, the display, the control button, the sensor 5, and the central controller by telecommunication. The power supply provides power to the processor, the audible and visual alarm, the display, and the control button.

[0028] The processor in this structure calculates the speed of roller 1 and displays it on the display. At the same time, the processor compares the transmission speed of the transmission motor transmitted from the central controller with the speed of roller 1 and displays them on the display. When the speeds are inconsistent, the processor can control the sound and light alarm to alarm, and feedback to the central controller to control roller 1 to stop rotating. At the same time, the corresponding roller 1 position detected by the unit speed detection device is displayed on the display, and the staff can check it in time. Example 3

[0029] like Figure 1 to Figure 2As shown, based on the above embodiments, the magnetic point 3 provided in this embodiment is set as a magnet; the magnetic strength of the magnet used in this structure can be consistent or different in size, and different in size can facilitate the sensor 5 to distinguish and identify. Example 4

[0030] like Figure 1 As shown, based on the above embodiments, the magnetic belt 4 provided in this embodiment can be fastened and installed on the sides of the roller 1 at both ends by screws 6; this structure requires drilling holes at both ends of the roller 1, and the installation operation is a bit cumbersome, but this is also the most stable installation method. Example 5

[0031] like Figure 2 As shown, based on the above embodiments, the magnetic belt 4 provided in this embodiment can be bonded to the side surfaces at both ends of the roller 1 by means of a high temperature resistant adhesive. The structure is simple to operate, and only requires the side of the magnetic belt 4 coated with the high temperature resistant adhesive to be directly bonded to the corresponding positions of the side surfaces at both ends of the roller 1. However, this installation method will result in a short service life due to the long-term high temperature environment.

[0032] On the basis of the above embodiment, the sensor 5 may adopt a Hall effect sensor. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiment, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A roller kiln roller speed detection device, applied to a roller (1) and a base (2), characterized in that: The base (2) is provided with a plurality of rollers (1) arranged in sequence at intervals. Speed ​​detection mechanisms are installed at both ends of the plurality of rollers (1) behind the power starting point of the rollers (1). The speed detection mechanism further comprises a unit speed detection device and a control device. The unit speed detection device is connected to the control device by telecommunication, and the control device is connected to the central controller of the roller kiln by telecommunication. The unit speed detection device comprises a magnetic belt (4) having a plurality of magnetic points (3) evenly distributed at intervals, and a sensor (5) capable of sensing the magnetic points (3). The magnetic belt (4) is installed at both ends of the rollers (1), and the sensor (5) is installed on the base (2) below the magnetic belt (4).

2. A roller kiln roller speed detection device according to claim 1, characterized in that: The control device also includes a machine base, a processor, an audible and visual alarm, a display, a control button, and a power supply. The machine base can be magnetically attracted to the outside of the roller kiln. The machine base is equipped with a processor, an audible and visual alarm, a display, and a control button. The processor is connected to the audible and visual alarm, the display, the control button, a sensor (5), and a central controller by telecommunication. The power supply provides power to the processor, the audible and visual alarm, the display, and the control button.

3. A roller kiln roller speed detection device according to claim 1, characterized in that: The magnetic point (3) is configured as a magnet.

4. A roller kiln roller speed detection device according to claim 1, characterized in that: The magnetic belt (4) is fixedly mounted on the side surfaces at both ends of the roller (1) by means of screws (6).

5. The roller kiln roller speed detection device according to claim 1, characterized in that: The magnetic belt (4) is bonded to the side surfaces at both ends of the roller (1) by means of a high temperature resistant adhesive.

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