Grinder safety technology and manufacturing guide

1 Scope

This standard is a requirement for the safety design, manufacture and use of the company's shredders. This standard applies to all kinds of spur-type and hammer-type pulverizers (hereinafter referred to as "shredders").

2 company shredder series product introduction

For the customer's needs, custom-made stainless steel pulverizer, iron pulverizer, hammer pulverizer, roller pulverizer, air-cooled pulverizer, pulverizing and mixing machine, pulverizing and packaging machine, smashing and sieving machine, for different types of large Block material design and development of various types of crushers, targeted to break up large pieces of material to solve customer production problems

3 Safety design requirements

  3.1 The design of the pulverizer shall comply with the provisions of this standard.

  3.2 The connection method of each component should be firm and reliable, so as to ensure that it will not be loose due to vibration and other conditions.

  3.3 guards

  3.3.1 Exposed rotating parts must have guards. The mesh of the guards should ensure that no part of the human body will touch the rotating parts.

  3.3.2 The protective device should have sufficient rigidity to ensure that the human body does not deform or displace in time.

  3.4 Feeding port

  3.4.1 The length of the feed hopper of the green and rough feed (aquatic plants such as grass, water lotus and straw, corn stalk, hawthorn and other straws and vines) shall not be less than 500mm; the height of the feeding hopper platform shall be It is 700mm-1100mm.

  3.4.2 Manually fed grain (milk, soybean, corn, sweet potato, broken bean cake, etc.) crusher should be installed with a particle hopper that can control the flow of material.

  3.4.3 The system automatic feeding mill must be equipped with a protection device to prevent magnetic metal foreign matter from entering the crushing chamber.

  3.4.4 The feeding port of the manual feeding pulverizer shall have a warning sign that “the hand is not allowed to reach into the pulverizer when working”.

  3.5 The pulverizer should have overload protection device and grounding mark. A small pulverizer that is not used with an electrical control box at the time of shipment, and the manufacturing unit should be described in the instruction manual.

 3.6 The outer casing and exposed parts of the pulverizer should be designed to avoid sharp corners and sharp edges that are easy to injure.

  3.7 The pulverizer shall indicate the steering of the spindle in a conspicuous position.

4 Manufacturing and acceptance requirements

  4.1 The rotor of the pulverizer should be checked for balance. The crusher products are all balanced.

  4.2 The total mass difference between the two sets of hammers in the radial direction of the hammer mill shall not exceed 5g, and the difference of the same group weight of the flat teeth of the jaw crusher shall comply with the requirements of 344 in JB/T6270-1992.

  4.3 All rotating parts should be flexible and free from sticking and rubbing. The hammer on the rotor should be able to rotate freely around the pin under its own weight.

  4.4 The handle of the protective cover and the operating mechanism shall be painted with a paint that is striking and different from the original color of the crusher. The danger should be marked as specified in GB2893.

  4.5 The dust concentration in the working area of the pulverizer shall not exceed 10 mg/m3.

  4.6 The product label shall be marked with at least the following contents: - product name; - standard number; - product model; - name of the manufacturing unit; - matching power; - spindle speed; - manufacturing date.

5 User's Guide

  5.1 The pulverizer manufacturing unit shall provide instructions for properly guiding the user's installation, use, maintenance, etc. The instructions for use shall specify the purpose of the shredder, including all instructions for ensuring safety and proper installation, use and maintenance. The user should be required to use the shredder reasonably according to his instructions, and to warn of the potential hazard of using the shredder in other incorrect ways not as required in the instruction manual.

  5.2 Instructions for use of the shredder shall include:

  a) The self-information of the pulverizer, for example: - a detailed description of the pulverizer and its protective devices and interlocking devices; - the scope of use of the pulverizer; - the main technical parameters.

  b) Information on the use of the pulverizer: - Installation conditions; - Description of the connection between the pulverizer and the power source; - Safety instructions for manual feeding; - Description of settings and adjustments; - Start-up and operation Operating procedures, methods, precautions, and prone to erroneous operations and precautions; - disabled information.

  c) Maintenance information: processing procedures when faults occur, simple fault analysis and troubleshooting methods.

  d) The detailed address, contact number, fax number, etc. of the manufacturing unit.

6 Requirements for use

  6.1 Before use, the operator should carefully read the instruction manual, understand the structure of the crusher, and be familiar with its performance and operation method.

  6.2 The power must be selected according to the stencil's labeling regulations. It is not allowed to increase the spindle speed arbitrarily.

  6.3 The working area of the shredder should be spacious, ventilated, with sufficient retreat space and reliable fire extinguishing equipment.

  6.4 Before starting the machine, adjust and maintain according to the instructions in the instruction manual, and check if the fasteners are tightened. In the case of ensuring the safety of man and machine, the machine can be started up and can be fed after 2 minutes to 3 minutes of empty operation. The suction system must be in normal working condition before feeding.

  6.5 If abnormal noise response occurs during work, immediately stop the inspection. It is strictly forbidden to eliminate the fault when the crusher is still running.

  6.6 After the work is completed, it must be idle for 1min~2min, and all the materials inside the standby unit can be discharged before it can stop.