GB 25521-2010Mine screening equipment - Safety requirements (English PDF)

4.1 General Requirements

4.1.1 The intended use of screening equipment safety measures should be consistent with GB/T 15706.1 and the relevant requirements of GB 18152.

4.1.2 If the cold, dangerous hot surface contact, should be equipped with protective devices.

4.1.3 tubes, hoses and fittings shall withstand. Hose working pressure should be marked. To prevent the tube or hose burst, in the vicinity of the operating position Hoses or pipes should be installed shield.

4.1.4 might close screening equipment mechanical part should not be friction abrasions or "scraping hook", the sharp edges, corners and protruding parts The design should be consistent with the provisions of GB/T 15706.2 of.

4.1.5 screening around the unit should allow sufficient space for operation and maintenance.

4.1.6 screening equipment shall be ergonomically designed to enable operators to reduce labor intensity, to avoid fatigue.

4.1.7 To protect the safety of personnel, the operator should wear protective work gloves, wear safety shoes with other protective equipment.

4.1.8 shaker vibration during starting and stopping large, to avoid hydraulic hose connected to the vibration source and non-point vibration between fixed or soft power Cable pull off or kink rupture, its installation length should allow sufficient margin.

4.2 Non-electrical hazardous area

4.2.1 vibrating screen at startup and shutdown can lead to compression and impact, people should stay away from the shaker at least 1m. Importers should be located on the platform Li "caution" warning flags that should meet the requirements of GB 2894. Between the hopper and other non-vibrating shaker body should have at least 50mm distance.

4.2.2 rotary screen fence shall be established, to avoid entanglement injury.

4.2.3 screening equipment installed at the top of the overall project structure, in order to avoid slipping, falling, should set the platform fence in place Bars and stairs.

4.3 Material and/or parts of the projectile

4.3.1 screening equipment side guard height should be properly designed, installed, or shield in the upper part of the screen box, in order to prevent the material shot out of the screen box.

4.3.2 In order to prevent the occurrence of parts or exit wound accident, the outer rotor and transmission components and screening equipment to be provided protection.

4.4 machine and foundation stability To avoid equipment vibration on the basis of the harm, the natural frequency of the foundation should be greater than the operating frequency of 10 times.

4.5 Security guards

4.5.1 In order to avoid personnel within reach harm, danger zone should be set protection. Protective device shall comply with GB/T 15706.2 And GB/T 8196 requirements.

4.5.2 Working platforms and gangways shall comply with the safety requirements of GB 17888.2.

4.5.3 stairs, ladder and guardrail safety requirements should be consistent with GB 17888.3 requirements. Fixed steel ladders

4.5.4 screening equipment shall comply with the provisions of GB 4053.1.

4.5.5 screening equipment fixed steel inclined ladders shall comply with the provisions of GB 4053.2. Platform guard rails

4.5.6 screening equipment shall comply with the provisions of GB 4053.3.

4.6 control system and its means

4.6.1 Security screening equipment control system section shall comply with GB/T 16855.1 and GB/T 7932's.

4.6.2 Where a power-driven screening equipment should be set total stop switches, each operating position should have an emergency stop device to prevent incidents caused Danger.

4.6.3 power supply interruption or interrupt again, can only be restarted by manual operation; when the power supply is faulty or hydraulic, pneumatic When the system pressure drops, shall be protected to avoid danger. Protection devices and protective measures should be reliable and effective.

4.6.4 system when an emergency occurs, the alarm system should be able to automatically send an alarm signal. Alarm signal must be easy to place and receive, and And the corresponding interlock safety device.

4.6.5 Operating screening equipment control devices should be safe, fast, reliable, and its design configuration and signs should be consistent with GB/T 15706.2 Regulation set. The main control device should be arranged in the comfort zone operated auxiliary control device may be arranged in the manipulation of their reach or dangerous Fan Other locations around the outside.

4.6.6 Control System should be the appropriate emergency stops and safety devices, emergency stop devices and signs shall comply with the provisions of GB 16754.

4.6.7 All emergency stop functions and safety devices which should be checked regularly.

4.7 Electrical Equipment

4.7.1 Electrical equipment screening equipment used should be a reliable ground fault protection device, the electrical equipment should meet the safety performance GB 5226.1 relevant requirements.

4.7.2 for flammable, electrical equipment screening equipment used in potentially explosive atmospheres shall comply with the relevant requirements of GB 3836.1.

4.7.3 transformer or high voltage cable fence or four weeks should be set between arranged in isolation, and set the appropriate safety signs. Safety signs should meet The combined provisions of GB 2894.

4.8 Hydraulic, lubrication system

4.8.1 hydraulic system should be consistent with GB T 15706.2 and GB/T requirements/3766's. Piping system pressure should not exceed the maximum allowable pressure Force, pressure drop and liquid leakage should not be dangerous. System should be equipped with temperature and pressure monitoring devices, and sound an alarm when you exceed the allowable range Advertisements.

4.8.2 hydraulic hoses should be preformed. Hydraulic hoses and wires should be isolated, and avoid hot surfaces and sharp edges. Mobile hydraulic soft Tube should be equipped with guide means.

4.8.3 hydraulic tank level indicator should be filled with the oil tank should not overflow. Hydraulic components and joints should not be leaking.

4.8.4 hydraulic, lubrication system should be installed in a suitable secure location, and spaced from the host to prevent the tube or hose burst injury to the user or Fire.

4.9 Fire and Explosion

4.9.1 screening equipment for use in flammable and explosive environment, the electrical equipment should meet the requirements of 4.7.2.

4.9.2 operating room screening equipment should be made of fireproof materials decorative materials should not release toxic gases when burned, flame-retardant materials.

4.9.3 sieving device may produce a fire or explosion site, the manufacturer in the instructions for use should be warned.

4.9.4 Screening equipment designated duty stations should be placed portable fire extinguisher.

4.9.5 Portable fire extinguishers shall comply with the requirements of GB 4351.1. Portable fire extinguishers should not be placed near high temperature or power, should be placed Set in a convenient operator access areas, should take place when the need for any tools.

4.10 Noise

4.10.1 screening equipment with a low noise material and parts manufacturing to minimize noise.

4.10.2 screening equipment when working in harsh noise environments, the operating room should be set to protect the operator from noise damage. Operating room Within the noise should not exceed 85dB (A), according to the provisions of GB/T 13325 testing. Operating room noise control measures should be consistent with GB/T 19886 Provisions.

4.11 Radiation To avoid heat radiation or hot projectile material injury to the operator, for high temperature materials screening equipment should be set to guard the safety of personnel.

4.12 dust, gas, steam and smoke dissemination

4.12.1 To help avoid inhalation of harmful gases, fumes and dust, exposure to dust, harmful gases, vapors and smoke screens and other harsh environments Separation plant should be set up protective cover and dust, air purification devices.

4.12.2 Operating room screening equipment shall be equipped with an air purification device, operating room dust concentration should not exceed 2mg/m3, dust measurement side Law should be consistent with GB/T 5748 regulations.

4.13 Lighting

4.13.1 screening equipment work site should be lighting. Lighting should be white.

4.13.2 screening equipment should be light and spacious ambient lighting conditions, illuminance its operating position and maintenance point of not less than 100lx, the rest position of photo Of not less than 30lx.

4.14 Operating position

4.14.1 operating position should be able to prevent dangerous projectile material generated to feed, discharge and other processes should take the necessary protective measures.

4.14.2 Operation rightful place convenient access and good visibility, ensure staff do not pose a danger.

4.14.3 There should be close to the operating position of flammable and explosive materials. Operating room door opened

4.14.4 directions should enable the operator in the event of danger quickly leave the operating room.

4.14.5 screening equipment into the operating position and a maintenance channel should be smooth and convenient channel should be designed in line with GB/T 17300 of Provisions.

4.15 Warning device

4.15.1 screening equipment warning devices must be clear and accurate warning signal, the operator should regularly check all of the warning device.

4.15.2 When there is imminent danger, warning devices should be able to automatically send an alarm signal to personnel within the operation range.

4.16 Installation, operation, maintenance and removal

4.16.1 screening equipment shall be installed using manual installation method to specify the basis of a predetermined load to bear and lifting conditions, avoid Resonance and foundation occur.

4.16.2 clogging occurs mesh emergence of non-foreseeable or mechanical failure need to be excluded in operation, should an emergency stop and lock the start switch. Troubleshooting completed no confirmation before restarting after the danger zone. Do not allow maintenance equipment in working condition.

4.16.3 shaker should be pressed without overload due to vibration first stop pressing the V-belt use special equipment for processing.

4.16.4 Removing screening equipment should be powered off first and then remove the power source to prevent misuse damage.

5.2 Description

5.2.1 screening equipment control section shall be clear and unambiguous.

5.2.2 a potential danger, you must set up warning signs. Warning signs should be consistent with the requirements of GB 2894.

5.3 Maintenance Adjust screening equipment, maintenance, lubrication, cleaning and repair work should be carried out at the time of shutdown. If the above does not work in stop mode, It must be carried out according to the requirements of 5.4.5.

5.4 User's Guide

5.4.1 screening equipment to the operating instructions should be consistent with GB/T 15706.2 and GB/T 9969 requirements. Instructions cover or first page shall be given the following information.

--- Instructions title;

--- Device model;

--- Manufacturers, sales companies and agents name and mailing address. Each screening device's instruction manual should include the following.

--- Operating Guide;

--- Maintenance Guide;

--- Consumables table;

--- Transportation and installation instructions. Instructions should be the official language for the first time to use the device of the country, its language should be suitable for the operator to read. Safety Information

5.4.2 Operation Guide screening equipment should be passed to the operator, all the important details about the safe operation of equipment should included. Operating instructions should be at least about the proper use of screening equipment, the following information and instructions.

--- Shown signs content;

--- Entrust repairs, maintaining the company's name and mailing address;

--- Detailed description of the intended use of screening equipment;

--- Full Description screening equipment operation;

--- Show using the program, indicating foreseeable misuse;