CN219187684U

CN219187684U - Screen cloth damage alarm device

Info

Publication number: CN219187684U
Application number: CN202320708715.7U
Authority: CN
Inventors: 唐进; 许树强; 陈彦彬
Original assignee: Beijing Easpring Material Technology Co Ltd
Current assignee: Beijing Easpring Material Technology Co Ltd
Priority date: 2023-04-03
Filing date: 2023-04-03
Publication date: 2023-06-16
Anticipated expiration: 2033-04-03

Abstract

The utility model discloses a screen damage alarm device which comprises a vibrating screen, wherein a screen is arranged in the vibrating screen, and the device also comprises a conductive wire, a broken wire detector, a control system and an alarm; the conductive wires are woven in the screen; the broken wire detector is connected with the output end of the conductive wire and sends a broken wire detection signal to the control system; the control system is in signal connection with the alarm; and judging whether the screen cloth is damaged according to the broken wire detection signal so as to control the alarm to alarm and stop the sieving machine. According to the screen damage alarm device provided by the utility model, the conductive wire electrically connected with the broken wire detector is woven in the screen, the conductive wire is in a conducting state when the screen is not damaged, and no current passes through the conductive wire when the screen is damaged; when the control system receives a broken wire detection signal sent by the broken wire detector and the conductive wire does not pass through the broken wire detection signal, the system program can judge that the screen is damaged and alarm and stop at the same time.

Description

Screen cloth damage alarm device

Technical Field

The utility model relates to the technical field of screen damage detection of sieving machines, in particular to a screen damage alarm device.

Background

Along with the continuous transformation and upgrading of the production equipment of the anode materials of the modern lithium batteries, the requirements on the safety performance of the batteries are higher and higher, which means that the production process and quality of the anode materials are higher and higher. In the production process, in the screening link, the screen cloth is damaged due to equipment problems (such as vibration amplitude, conveyor abnormality and ultrasonic abnormality), foreign matter introduction and the like, and the unscreened materials in the vibration screen can flow to the procedures of an iron removing machine, a ton packing machine and the like, so that repeated work of re-feeding and reworking is required, and the production work rhythm, the production cost and the labor efficiency are seriously influenced. The existing screen damage alarm device of the vibrating screen machine is single in means for detecting screen damage and poor in detection effect.

Therefore, how to provide a screen breakage alarm device with reliable detection effect becomes a technical problem to be solved in the field.

Disclosure of Invention

The utility model aims to provide a screen damage alarm device capable of accurately detecting screen damage.

The utility model provides a screen damage alarm device which comprises a vibrating screen, wherein a screen is arranged in the vibrating screen, and the device also comprises a conductive wire, a broken wire detector, a control system and an alarm; the conductive wires are woven in the screen; the broken wire detector is connected with the output end of the conductive wire and sends a broken wire detection signal to the control system; the control system is in signal connection with the alarm; and judging whether the screen cloth is damaged according to the broken wire detection signal so as to control the alarm to alarm and stop the sieving machine.

Optionally, the device further comprises a buffer bin and a load cell; the buffer bin is connected with a discharge port of the sieving machine, and the weighing sensor detects the weight of materials in the buffer bin; the control system is in signal connection with the weighing sensor, and can judge whether the screen cloth is damaged according to the weighing signal fed back by the weighing sensor so as to control the alarm to alarm and stop the sieving machine.

Optionally, the apparatus further comprises a distance sensor; the distance sensor is arranged at the top of the sieving machine, monitors the distance between the screen and the top in real time, and sends a distance detection signal to the control system; the control system can judge whether the screen cloth is broken according to the distance detection signal so as to control the alarm to alarm and stop the sieving machine.

Alternatively, the number of the distance sensors is three, and the three distance sensors are uniformly arranged at the top of the sieving machine.

Optionally, the screen comprises an upper screen and a lower screen which are sequentially arranged along the gravity direction; the conductive line includes a first conductive line and a second conductive line; the first conductive wire is woven in the upper screen, the second conductive wire is woven in the lower screen, and the first conductive wire and the second conductive wire are respectively connected with the broken wire detector in a signal mode.

Optionally, the device further comprises a butterfly valve, and the butterfly valve is arranged at a discharge hole of the buffering bin.

Optionally, the distance sensor is an ultrasonic sensor.

Optionally, the control system is a PLC.

According to the technical content disclosed by the utility model, the method has the following beneficial effects:

according to the screen damage alarm device provided by the utility model, the conductive wire is woven in the screen, the output end of the conductive wire is connected with the broken wire detector, the broken wire detector can detect the line on-off of the conductive wire in real time and send a broken wire detection signal to the control system, for example, if the screen is not damaged, the conductive wire is in a conducting state, the broken wire detector can always detect a current signal transmitted by the conductive wire, if the screen is damaged, the conductive wire is broken, no current passes through the conductive wire, the broken wire detector cannot detect the current signal of the conductive wire, the broken wire detection signal is sent to the control system, and when the control system receives the broken wire detection signal sent by the broken wire detector, the system program can judge that the screen is damaged and alarm and stop at the same time.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a block diagram of a screen breakage alarm apparatus provided by the present utility model.

Fig. 2 is a connecting structure diagram of an upper screen and a first metal detection line of the screen breakage alarm device provided by the utility model.

Reference numerals illustrate:

1-ultrasonic sensor, 2-ultrasonic sensor control box, 3-ultrasonic sensor field box, 4-sieving machine, 5-sieving machine base, 6-buffer bin bracket, 7-weighing sensor, 8-buffer bin, 9-sieving machine discharge port, 10-sieving machine motor, 11-upper layer sieve net, 12-first metal detection line and 13-broken line detector.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1, the screen breakage alarm device comprises an ultrasonic sensor 1, an ultrasonic sensor control box 2, an ultrasonic sensor field box 3, a vibrating screen 4, a vibrating screen base 5, a buffer bin bracket 6, a weighing sensor 7, a buffer bin 8, a vibrating screen discharge port 9, a vibrating screen motor 10, an alarm, a butterfly valve and a control system.

The vibrating screen 4 and the vibrating screen motor 10 are sequentially arranged on the vibrating screen base 5 from top to bottom, one side of the bottom of the vibrating screen 4 is provided with a vibrating screen discharging port 9, the vibrating screen discharging port 9 is connected with a buffer storage bin 8, the buffer storage bin 8 is located below the vibrating screen 4, the undersize discharged from the vibrating screen discharging port 9 enters the buffer storage bin 8 under the action of gravity, a butterfly valve is arranged at the discharging port of the buffer storage bin 8, and when the butterfly valve on the buffer storage bin 8 is closed, materials can be prevented from entering and polluting downstream products. With reference to fig. 2 again, an upper screen 11 and a lower screen are arranged in the vibrating screen 4 from top to bottom in sequence; three ultrasonic sensor 1 evenly sets up at the top of sieving machine 4, ultrasonic sensor 1 and ultrasonic sensor control box 2 and ultrasonic sensor field case 3 electric connection, ultrasonic sensor control box 2 is used for converting the ultrasonic detection signal into the distance detection signal that control system can receive, ultrasonic sensor 1 detects the distance between the top of sieving machine 4 and upper screen 11 in real time, the distance that ultrasonic sensor 1 detected becomes longer after upper screen 11 is damaged, then indicate upper screen 11 damage, control system control alarm sends out the alarm. The ultrasonic sensor 1 is a distance sensor of the present utility model.

Referring to fig. 2, a first metal detection line 12 and a second metal detection line are respectively woven in an upper screen 11 and a lower screen, the first metal detection line 12 is a first conductive line of the present utility model, and the second metal detection line is a second conductive line of the present utility model; the output ends of the first metal detection line 12 and the second metal detection line are respectively connected with a broken line detector 13, the two broken line detectors 13 are respectively connected with a control system and transmit broken line detection signals to the control system, the first metal detection line 12 and the second metal detection line are in a conducting state when the upper screen 11 and the lower screen are not damaged, and if the upper screen 11 or the lower screen is damaged, no current passes through the metal detection lines corresponding to the upper screen 11 and the lower screen, and the control system controls an alarm to send out an alarm. The control system can judge whether the screen cloth is broken according to the received broken wire detection signal so as to control the alarm to alarm and stop the sieving machine.

The buffering bin 8 is arranged on the buffering bin bracket 6, the weighing sensor 7 is arranged at the bottom of the buffering bin 8 and used for detecting the weight of materials in the buffering bin 8 and sending weighing signals to the control system, normal material discharging is a stable discharging mode, the discharging weight in unit time is within a preset range, and when the weight of materials received in the buffering bin 8 in unit time exceeds the preset range, the upper screen 11 or the lower screen is proved to be damaged.

The control system is controlled by the PLC, when the control system detects that the screen is abnormal through any one mode of the ultrasonic sensor 1, the first metal detection line 12, the second metal detection line and the weighing sensor 7, the system program of the control system immediately controls the vibrating screen 4 to stop after judging, and simultaneously closes a butterfly valve of a buffering bin to prevent materials from entering and polluting downstream products, and waits for manual inspection confirmation. Through the design, the reliability of the vibrating screen equipment is improved, and the functions of finding problems and immediately processing are achieved.

The specific working principle is as follows: in the use process of the equipment, the ultrasonic sensor 1 is always in a working state, the system detects a distance signal fed back to the control system by ultrasonic waves, when the screen mesh normally runs and is not broken, the fluctuation of the value fed back by the ultrasonic waves is small, the value fed back is in a standard setting range, a broken wire detection signal belongs to a normal state (a metal detection line is not broken), and the weight change trend is smaller than the setting range. When the upper screen 11 breaks the screen due to some problems during the use process, the signal fed back by the ultrasonic sensor 1 exceeds the set value, so that the upper screen 11 is indicated to be broken. Because the damage of the upper screen 11 is considered to crush the lower screen, the butterfly valve on the buffer bin 8 is immediately closed, and the sieving machine 4 is immediately stopped. When the upper screen 11 is normally used and is not damaged, but the lower screen is damaged due to abnormal conditions, the weighing sensor 7 on the cache bin 8 can be increased by exceeding the instantaneous weight, so that the equipment is stopped in an alarm mode, and the control function of the system is achieved.

The working process comprises the following steps: starting the equipment, opening a butterfly valve of a cache bin, and performing self-checking by using an ultrasonic sensor 1, wherein the equipment runs normally. The sieving machine 4 can be fed, the ultrasonic sensor 1, the weighing sensor 7 and the programs in the control system are automatically judged, when the judging process exceeds a set value, the ultrasonic detection signal exceeds the set range or the instantaneous value of the weighing signal exceeds the fluctuation range, the butterfly valve of the buffering bin 8 is immediately closed, the system is immediately stopped in an alarm mode, whether the screen is normal is checked manually on site, and whether the screen needs to be replaced or restarted is confirmed.

In summary, the screen damage alarm device provided by the utility model solves the problem that impurities enter a downstream system due to screen damage of a vibrating screen machine in the production process, adopts corresponding measures in the process, improves the speed of cutting off the connection between the upstream system and the downstream system after the screen damage of the vibrating screen, and improves the efficiency of the treatment problem after the damage; the ultrasonic sensor has the advantages of lower cost, convenient installation and high reliability, only 1 ultrasonic sensor box (used for converting into a signal receivable by a control system) is needed to be configured on site, the sensor cable on the equipment is connected into the sensor box, and the detection signal is connected into the control system, so that the running condition of the upper screen can be detected in real time.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. The utility model provides a damaged alarm device of screen cloth, includes the sieve shaker, be provided with screen cloth, its characterized in that in the sieve shaker:

the device also comprises a conductive wire, a broken wire detector, a control system and an alarm;

the conductive wires are woven in the screen;

the broken wire detector is connected with the output end of the conducting wire and sends a broken wire detection signal to the control system;

the control system is in signal connection with the alarm; and judging whether the screen mesh is damaged according to the broken wire detection signal so as to control the alarm to alarm and stop the sieving machine.

2. The screen breakage warning apparatus as claimed in claim 1, wherein:

the device also comprises a buffer bin and a weighing sensor;

the buffer bin is connected with a discharge port of the sieving machine, and the weighing sensor detects the weight of materials in the buffer bin;

the control system is in signal connection with the weighing sensor, and the control system can judge whether the screen mesh is damaged according to the weighing signal fed back by the weighing sensor so as to control the alarm to alarm and stop the sieving machine.

3. The screen breakage warning apparatus as claimed in claim 1 or 2, wherein:

the apparatus further comprises a distance sensor; the distance sensor is arranged at the top of the sieving machine, monitors the distance between the screen and the top in real time, and sends a distance detection signal to the control system;

the control system can judge whether the screen cloth is broken or not according to the distance detection signal so as to control the alarm to alarm and stop the sieving machine.

4. A screen breakage warning apparatus according to claim 3, wherein:

the number of the distance sensors is three, and the three distance sensors are uniformly arranged at the top of the sieving machine.

5. The screen breakage warning apparatus as claimed in claim 1 or 2, wherein:

the screen comprises an upper screen and a lower screen which are sequentially arranged along the gravity direction;

the conductive line comprises a first conductive line and a second conductive line;

the first conductive wire is woven in the upper screen, the second conductive wire is woven in the lower screen, and the first conductive wire and the second conductive wire are respectively connected with the broken wire detector through signals.

6. The screen breakage warning apparatus as claimed in claim 2, wherein:

the screen damage alarm device further comprises a butterfly valve, and the butterfly valve is arranged at a discharge hole of the buffering bin.

7. A screen breakage warning apparatus as claimed in claim 3, wherein said distance sensor is an ultrasonic sensor.

8. The screen breakage warning apparatus as claimed in claim 1 or 2, wherein said control system is a PLC.