Special mold temperature injection pump supply

Nanjing Lead Sheng Machinery Co., Ltd. to provide you with a wealth of information and information on? Mold temperature and other aspects of the pump. Pump selection: Design Institute in plant equipment design, determining the use and performance of the pump and the pump type selection. This option must first select the pump from the type and form of the beginning, then what principle to choose pump it? On what basis is it? First, understand the principle of selecting a pump, so that the selected pump type and performance to meet the requirements means flow, head, pressure, temperature, flow cavitation, suction and other process parameters. 2, must meet the requirements of medium characteristics. For transportation of flammable, explosive and toxic or expensive media pumps, require reliable leak-free seal or pump, such as magnetic drive pumps, diaphragm pumps, shielding pump for conveying corrosive medium pump requires convection parts are corrosion-resistant material as AFB stainless steel corrosion resistant pumps, CQF engineering plastic magnetic drive pump. For transporting media containing solids pump requires convection parts are wear-resistant materials, the use of clean liquid if necessary seal with flush. 3, high mechanical reliability, low noise and vibration. 4, the economy should be considered the lowest total cost of equipment costs, operating costs, maintenance costs and management fees. 5, centrifugal pump with a high speed, small size, light weight, high efficiency, large flow, simple structure, no pulse infusion, steady performance, easy operation and convenient maintenance. Therefore, the following exceptions should be used wherever possible centrifugal pumps: a, a metering requirements, the selection of metering pumps. b, head demanding, little traffic and no suitable when small flow high head centrifugal pump can be used, the choice of reciprocating pumps, can also be used as pump cavitation vortex less demanding. c, lift low, traffic is heavy, the choice of axial flow and mixed flow pumps. When d, large medium viscosity (greater than 650 ~ 1000mm2 / s), may consider using a rotary pump or a reciprocating pump (gear pump, screw pump). When e, medium air content of 75%, the flow is small and the viscosity is less than 37.4mm2 / s, optional vortex pump. f, irrigation pumps to start frequently or inconvenience occasions, should be used with self-priming pump, such as self-priming centrifugal pumps, self-priming vortex pump, pneumatic (electric) diaphragm. Second, know the fundamental basis for pump selection based pump selection should be based on the process, drainage requirements, be considered from five aspects, both liquid delivery quantity, unit head, fluid properties, piping layout and operating operating conditions. 1, the flow is one of the important performance data selecting a pump, which is directly related to the production capacity and delivery capacity of the entire apparatus. As process design can be calculated Institute pump properly, minimum, maximum, three kinds of traffic. When selecting the pump to the maximum flow rate as the basis, taking into account the normal flow, the maximum flow rate in the absence of, preferably 1.1 times the normal flow rate is usually as the maximum flow. 2, device system required pump head is selected another important performance data, the general use of amplified 5% -10% margin lift for selection. 3, fluid properties, including liquid media name, physical properties, chemical properties and other properties, physical properties are temperature c density d, viscosity u, the content of the medium diameter of solid particles and gas, etc., which involves the head of the system, the effective gas NPSH calculations and suitable pump types: chemical nature, mainly refers to chemical corrosive and toxic liquid medium, is the choice of material and selection of pumps that an important basis for the seal type. 4, piping layout condition device system refers to the highly liquid feeding liquid feed from the feed solution to suction side as the minimum level, the discharge side of the highest level and some data and pipe size and length, material, pipe size, quantity etc., for the Department of Computing and comb lift NPSH check. 5, the contents of many operating conditions, such as the liquid saturated steam operation force T P, the suction side pressure PS (absolute), the discharge side of the container pressure PZ, altitude, ambient temperature or continuous operation, the pump is a fixed position gap or it may shift. Third, choose the specific operation of the pump according to pump selection principle and the basic conditions for the selection, as follows: 1, according to the arrangement, terrain conditions, water conditions, operating conditions of the device, determine the choice of horizontal, vertical, and other types (pipeline type, diving, liquid-type, non-blocking, self-priming, gear, etc.) pumps. 2, according to the nature of the liquid medium to determine the water pump, heat pump or pumps, chemical pumps or Naifushibeng or trash pump, or the use of non-clog pump. Pumps installed in explosive areas, should be based explosive area classification, with the corresponding proof motors. 3. The size of the flow, determine the menu or double suction pump suction pump; according to lift height, menu-level pump or multi-stage pump, high-speed pumps or low speed pump (air conditioning pump), multistage pump efficiency is lower than the single-stage pump, such as menu-level and multi-stage pumps can use the same pump, the first choice of single-stage pumps. 4, to determine the specific model of the pump to determine the choice of what the series after the pump, you can press the maximum flow rate (in the absence of maximum flow, usually preferable 1.1 times the normal traffic flow as the largest), take 5% -10% margin enlarge The main parameters of the head of these two properties, the type of the spectrum or the series curve determine the specific model. Proceed as follows: using a pump characteristic curve, find the required flow values ??on the horizontal axis, find the lift values ??on the vertical axis, up and right lead vertical or horizontal lines, right on the intersection of two lines from the two characteristic values on the pump is to choose a pump, but this ideal situation rarely, usually run into the following two conditions: first: the intersection of the characteristic curves above, which shows the flow to meet the requirements, but the head is not enough, this when, if the head almost the same, or a difference of about 5 percent, still the choice, if the head a lot of difference, then choose a larger pump head. Or try to reduce the pipeline pressure losses. The second: the intersection at the bottom of the characteristic curve, the pump characteristic curve in trapezoidal fan range, the initial set of this type, then how much difference according to the head, to decide whether to cut impeller diameter, if the head difference is small, do not cut, if lift a big difference, just press the desired Q, H ,, according to its ns and cutting formula, cutting impeller diameter, if the intersection does not fall within the scope of the trapezoid fan, to be elected head of smaller pumps. When selecting a pump, sometimes we have to consider the production process requirements, use of different shapes QH characteristic curve. 5, the pump model is confirmed, to approximate physical and chemical medium water pump water pump or the transmission medium is required then the relevant catalog or samples for corrections to the table based on the model performance or the performance curve, see the normal operating point falls within the Pump priority area? Is greater than the effective NPSH (NPSH). NPSH can also turn to the geometric corrections to mounting height? 6, for the delivery viscosity greater than 20mm2 / s of liquid pump (or a density greater than 1000kg / m3), must take the test water pump characteristic curve in terms of the viscosity (or the density) of the performance curve, in particular for suction performance and Input power for serious computing or less nuclear. 7, to determine the number of units and spare pump rate: a, normal operation of the pump, generally only one, because a large pump and two small pumps working in parallel rather, (refer to head, the same flow rate), high efficiency large pump small pump, so to speak from the energy point of view rather optional one big pump, instead of two small pumps, but the case of the following circumstances, consider two pumps in parallel cooperation: high traffic, a pump can not reach this traffic. b, there is the need for a 50% rate of large spare pump, two small pumps can work to change, both alternate (three total) c, for some large pump, the pump can be used in parallel operation flow requirements of 70%, do not spare pump when a pump overhaul, another pump still bear 70% of the production of transport. d, required 24 hours of non-stop operation of the pump, it should spare three pumps, one run, a backup, a repair. 8, under normal circumstances, customers can submit their "choose pump basic conditions", given by the Division I selection or recommend a better pump. If the institute in the design of plant equipment, the type of pump has been determined, according to the Institute configuration requirements. Fourth, maintenance and management of the pump to pump into electrical and machine two aspects, aspects of the machine for major maintenance records of the previous tune out than what you know. The second is the power of respect, and to understand each pump motor power, his control system has a certain understanding. [Edit this paragraph] Chinese pump industry development of China's pump industry was developed after the founding of New China, especially since the reform and opening up, the pump industry has been developing rapidly. Apart from a few special pump products, existing product variety and quantity to meet the basic needs of all sectors of the national economy. The main products are various types of pump industry centrifugal, mixed flow pumps, axial flow pump, vortex pump, rotary positive displacement pumps, reciprocating positive displacement pumps and water ring vacuum pump. In these pumps, press the station number calculation, about 70% of centrifugal pumps, rotary positive displacement pumps and reciprocating positive displacement pumps about 18%. With the rapid development of various industries, especially the process industry, China's pump industry has experienced rapid development. Meanwhile, the water treatment industry, the petrochemical industry, the oil and gas industry, power industry continues to maintain a high degree of economy. ? Mold temperature: First, the mold temperature describes ??????? mold temperature machine known mold temperature control machines, initially used in the injection mold temperature control industry. Later, with the development of the machinery industry is more and more widespread application, now generally divided mold temperature water machine, oil machine control temperature can reach plus or minus 0.1 degrees. Second, mold temperature machine features 1, computer touch control, easy to understand, and microcomputer processing sub-push-button PC plate. ? 2, Japan and the United Kingdom imports microcomputer dual PID temperature control table, touch type storage, automatic calculation, saving more than 35%. ? 3, safety protection and fault indication system. ? 4, imported components, life is long. ? 5, heating and cooling speed, temperature accuracy and stability, it can also be customized heat and cooling rate of speed. ? 6 unique dual power heated design, suitable for different places to use temperature control, energy-saving effect. ? 7, stainless steel body shape, the tube loss is small, uniform heating. ? 8 boot automatic exhaust function to prevent dry, protect the machine. ? 9, mold return water temperature detection table in order to achieve accurate temperature control. Third, the die temperature range of application 1, petroleum and chemical industry: polymerization, condensation, distillation, melting, dehydration, forced insulation. 2, the oil industry: fatty acid distillation, oil decomposition, concentration, esterification, smell and other vacuum reactor temperature, reactor heating. 3, textile work: heat setting roller heating, drying room heating, heat capacity staining. 4, plastic and rubber industry: hot pressing, calendering, extrusion, vulcanization molding. 5, the timber industry: more plywood, fiberboard compression molding, laminate heating, hot plate heating, hydraulic machine temperature, wood drying. 6, chemical light: polymerization, condensation, distillation, distillation, concentration, evaporation, melt 7, petrochemicals: synthesis, reaction, distillation, rectification, heating, insulation, heat storage tanks, heavy heating 8, electroplating industry: zinc, chrome, silver Fourth, after-sales service 1 year warranty ,? all equipment provided by the company (excluding consumables), during the warranty period, due to problems caused by poor equipment itself, the company responsible for the free repair. 2, once the contract is entered into, the customer order is issued, that is, into the indefinite service period. We will provide accurate and timely customer to order spare parts and provide various services required by customers, are obliged to answer any questions raised by the customer at any time. 3, the company responsible for customer training and technical support for life. 4, walking in front of a failure to ensure that any one piece of equipment I sold the trouble-free operation. 5, so that each of our customers satisfaction, so every service of our customers satisfied. 6, after the order is issued, shall establish contact with customers, while our company always pay attention to the customer system layout, with or without problems and the progress of the gas path, waterway, circuits, etc., in order to start-up time for customers. 7, equipment operation period, regular customers tour, understand each piece of equipment operating conditions, inspection equipment, eliminate possible risks, maintenance guide customers, and we will take a variety of ways, such as telephone and other understand each equipment operation, maintenance status, as well as spare parts storage condition of the customers, the timely provision of our proposal, to ensure that each piece of equipment efficiency, low cost, trouble-free operation. 8, the event of failure, we will respond immediately, while telephone or fax dealt with promptly, on the other hand we will arrive at the customer site within 24 hours. Arrived at the scene, usually within an hour to make a conclusion analysis, after concluded that handled immediately. At the same record customer feedback, as long as the customer is reasonable, that is unconditionally met. 9 ,? We want to establish a cordial and customers, good working relations, mutual cooperation in learning to listen to customer suggestions, respect for the views of customers. At boot time we will have a systematic, standardized operation, maintenance and management training: while later we will come through every time our people and our knowledge facsimile equipment operation, maintenance and other aspects of experience unreservedly impart to the user. Nanjing Lead Sheng Machinery Co., Ltd. Address: Ankang Road, Jiangning District, Nanjing City Industrial Zone ri -10 Contact: learning to fly single contact: 15062238615 ????????? 025-68905716 E-mail: 2556109710 @ qq .com