Bulk electric flow control valve for cement equipment

Standard Name of the cement bulk flow control valve electric valve Standard Type People 's Republic of China Building Materials Industry Standard Standard Number JC / T 609-1995 1 subject content and scope of application. This standard specifies the product classification, technical requirements, test methods, inspection rules, signs, packaging, transportation and storage of the electric flow control valve for bulk cement. Wooden standard for electric cement flow control valve (hereinafter referred to as the flow control valve). 2 Standard GB / T 1804 General tolerances Linear dimensions of the final note tolerance GB 9439 gray cast iron GB / T 13306 signs JC 401.2 carbon steel and low alloy steel building materials machinery casting conditions JC 401.3 cast steel for building materials machinery JC 401.4 JC / T 402 cement machinery painting rust-proof technical conditions JC / T 406 cement machinery packaging technical conditions JC 532 building materials mechanical steel welding general technical conditions ZB Q92 002 Air Conveying Chute for Cement Industry 3 Product Categories 3.1 Structure Type The flow control valve is composed of a cylindrical flow valve and an electric actuator. 3.2 Model Model life method is as follows: FL D □ │ │ │ │ │ └ ─ ─ ─ Nominal width of the inlet diameter mm │ └ ─ ─ ─ ─ ─ Electric code └ ─ ─ ─ ─ ─ ─ ─ Flow Control Valve Code 3.3 Labeling Example Electric flow control valve with 300mm nominal inlet cavity: FLD 300 JC / T 609 3.4 Basic Parameters The basic parameters are as follows: Parameter Name Unit Model Parameter Value Feeding port lumen FLD250 FLD300 FLD400 FLD500 FLD630 Nominal width mm 500 630 Maximum flow rate 1) m [3] / h 345 540 Valve material flow area m [2] 0.014 0.017 0.026 0.032 0.051 Electric maximum angle (°) 90 Execution output signal mA 4 ~ 20 Mechanism action Room s 25 Note: 1) The maximum flow rate is calculated in the material flow 3m / s. 4 Technical Requirements 4.1 Basic Requirements 4.1.1 The product shall comply with this standard and shall be manufactured, installed and used in accordance with the product drawings and technical documents approved by the prescribed procedures. Where the standards, drawings and technical documents at the end of the technical requirements stipulated, should be consistent with national standards, building materials industry and mechanical and electrical industry, the relevant provisions of the relevant standards. 4.1.2 machined parts linear dimension of the final note tolerance according to GB / T 1804 in the m level. 4.1.3 Welding parts shall comply with the provisions of JC532, in which the surface quality of welded joints is not less than Grade III; the size tolerance is not less than Grade c. 4.1.4 Cast iron parts shall comply with the provisions of GB 9439. 4.1.5 Steel castings shall comply with the requirements of JC 401.2-401.4. 4.2 conditions of use 4.2.1 flow control valve inflatable pipeline should be set at the entrance to the control valve. 4.2.2 Flow control valve to send the cement moisture content should not exceed 1%, the temperature is not higher than 120 ℃, no debris and lumps. 4.2.3 The installation slope should be in the range of 6% ~ 14%. 4.2.4 flow control valve needs wind pressure 4.0-5.KPa, the need for air flow 1.5-2.0m [3] / m [2] .min. 4.3 Performance 4.3.1 flow and other parameters should be consistent with the provisions of Table 3.4. 4.3.2 flow control valve should be able to accurately and reliably control the material flow. 4.3.3 flow control valve work, the flange joints are not allowed to have leakage. 4.4 Assembly Requirements 4.4.1 All parts must be tested before they can be assembled, purchased parts, outsourcing parts must be tested according to the relevant standards, and have a certificate of product quality before assembly. 4.4.2 Breathable layer assembly shall comply with the relevant provisions of ZB Q92 002. 4.4.3 shell flange joint surface should be tight without leakage. 4.4.4 The electric actuator should make the flow control valve fully open and fully closed. 4.5 paint rust requirements Paint rust should be consistent with the provisions of JC / T 402. 4.6 appearance quality requirements The product shall not be apparent on the convex surface, depression, roughness and other injuries. 4.7 Installation requirements Flow control valve and adjacent parts should be tight leak-free connection. 4.8 empty test run 4.8.1 flow control valve action should be flexible, no abnormal sound. 4.8.2 The connection should be no leaks. 4.8.3 Electric actuator action should be correct and reliable, to meet the requirements of the maximum opening and operating time. 4.9 load test run requirements 4.9.1 load test run should meet the performance requirements of 4.3 does not affect the flow control valve related equipment to play its due capacity. 4.9.2 Flow control valve opening should correspond with the output signal of the electric actuator. 5 Test Method 5.1 No-load test run 5.1.1 Test run conditions: flow control valve assembly qualified. 5.1.2 Test Method a. Flow control valve opening and closing of not less than 10 times; b. Test pressure of 8kpa, packing 5min, check for leaks; c. Electric actuator driven cylinder valve opening to a maximum of zero. 5.2 load test run 5.2.1 test run conditions a. No-load test run qualified; b. System feeding. 5.2.2 Start the flow control valve for commissioning inspection, with bulk cement loading of not less than 30 times. 6 test rules Each product must be inspected by the factory quality inspection department qualified, and with the product quality certificate and the relevant technical documents before leaving the factory. 6.1 Inspection Classification test points factory inspection and type inspection. 6.2 factory inspection products should be completed before leaving the factory test items 4.l, 4.4,4.5,4.6,4.8,7.1,7.2. 6.3 Type inspection When one of the following conditions, should be tested according to all the technical requirements of this standard. a. new product prototype trial identification; b. After the formal production, such as structure, materials, processes and other major changes that may affect product performance; c. Normal production at least once every 3 years; d. When the product is stopped for one year, resume production. 7 Marking, Packaging, Transportation and Storage 7.1 Flow Control Valves Product signs and signage should be fixed at suitable locations. Label type and size should be consistent with the relevant provisions of GB / T l3306, including: a. Product name, model and standard code; b. The main parameters; c. The factory number and date; 4. Manufacturer's name and trademark. 7.2 product packaging and random files should be consistent with the provisions of Jc / T 406, and adapt to land and water transport requirements. 7.3 Flow Control Valve Before installation, both the manufacturer and the user need to properly store and store the parts, to prevent deformation, corrosion and damage. Additional note: This standard by the State Building Material Bureau Building Materials Machinery Standardization Technical Committee proposed and centralized. This standard is drafted by Wuxi Building Materials Instrument Machinery Factory, Tianjin Cement Industry Design and Research Institute, National Institute of Building Materials Standardization Institute to participate. The main drafters of this standard Tang Ping, Zhang Shun Kim, Gao Qi, Cheng Xi Yun, Qu Guangyu.