Analysis on the basic configuration and process layout of the production equipment of thermal insulation dry mixed mortar

Analysis on the basic configuration and process layout of thermal insulation dry mortar production equipment; the wall thermal insulation, which is popularized by Du Daojun, Suzhou No.1 Construction Machinery Co., Ltd., is mainly used for external wall thermal insulation, and the amount of thermal insulation materials required is very large One of the methods of external wall insulation is to use thermal insulation mortar construction, which is divided into three layers, * layer is to plaster a layer of bonding mortar on the leveled wall, the main function of which is to connect the wall and the thermal insulation layer; the second layer is the thermal insulation layer, which is made of polystyrene particles or extruded boards, or a mixture mortar mixed with lightweight materials such as polystyrene particles, perlite, vitrified beads, etc.; the third layer The layer is an anti crack layer, that is, anti crack mortar is applied outside the insulation layer According to the requirements, sometimes metal or glass fiber grid materials are set in the anti crack mortar during construction The thermal insulation mortar refers to the bonding mortar, the thermal insulation mortar mixed with light materials and the crack resistant mortar The equipment for producing thermal insulation mortar shall at least meet the production requirements of the above three kinds of mortar In addition to light materials, the main materials of the above mortar are cement, fine sand, fly ash, heavy calcium carbonate, etc., and the auxiliary materials are redispersible rubber powder, short fiber, calcium formate, etc According to the characteristics of products and raw materials, combined with the requirements of local guidance documents for production equipment, the selection of equipment can be determined The type selection of equipment is related to the process layout, while the process layout is related to the manufacturer Take the basic type I dry mortar production line designed and manufactured by Suzhou First Construction Machinery Co., Ltd as an example to analyze and check the composition of each part 1、 Equipment configuration and process layout adopt this type of layout when the height of the plant is not limited The design principle is that the main raw materials of cement, fly ash and sand are measured automatically, and other materials are added manually The main equipment configuration and corresponding functions are as follows: two powder silos for storing bulk cement and fly ash respectively, equipped with screw conveyor discharge and feed metering scale; one bucket elevator for sand lifting and feed metering scale; one set of cumulative metering scale for weighing cement, fly ash and sand; one manual feeding hopper and one well elevator Set, for adding all materials except cement, fly ash and sand; 1 no gravity dry powder mortar mixer; 1 finished product warehouse; 2 automatic dry powder mortar packing machines; 1 set of control system; 1 bag type pulse dust collector and 1 air compressor The layout of this form is shown in the right figure, with the mixer as the center for description 1 The cement bin and the fly ash bin are set at the side of the mixer, the materials are transported into the bin by the bulk truck through pneumatic conveying, and the materials are transported to the upper part of the metering bucket by the screw conveyor set under the bin at the designed speed, and the outlet of the screw machine is soft connected with the inlet of the weighing bucket; 2 The bucket elevator is set on the side close to the mixer, and the lower hopper is added at the feed inlet to sink in the ground, and the inlet is flush with the ground, so that the sand can be added The outlet of the elevator is above the weighing bucket and is soft connected with the feeding port of the weighing bucket The conveying speed of the sand to the metering scale is controlled by the bucket elevator 3 The metering scale is composed of weighing bucket, sensor, connecting piece, pneumatic butterfly valve, etc., which is set above the mixer A butterfly valve is installed under the weighing bucket to connect with the feeding port of the mixer According to the program design, the weighing of cement, fly ash and sand is completed 4 The manual feeding hopper is set above the mixer and is on the same working platform as the metering hopper 5 The well elevator is set on one side of the platform supporting the mixer, and the basket of the elevator lifts the materials to the platform where the manual feeding hopper is located 6 The gravity free mixer is placed on the platform of the first floor, with the capacity of 2 cubic meters It adopts the form of double large doors, with quick and even unloading According to different products, optional with flying knife device 7 The finished product hopper is set under the mixer and is closely connected with the blanking of the mixer If light insulation materials are required to be put into the mixer to be mixed together, in order to prevent segregation due to the difference of particle size and bulk density in the process of material falling, anti separation sliding plate is set in the finished product hopper to significantly reduce the occurrence of such phenomenon The finished product hopper is designed with two discharge ports, which can feed two packaging machines at the same time 8 2 sets of dry mortar packing machine When the valve mouth packing machine is selected, the feeding port of the packing machine is directly connected with the discharging port of the finished product hopper, that is, it is placed under the finished product hopper; if the open packing machine is selected, the packing machine is placed on one side of the finished product hopper, and the finished product hopper and the packing machine are connected with the feeding screw conveyor 9 The control system is divided into instrument control and computer control, with centralized operation 10 One bag type pulse dust collector is mainly used for the centralized dust removal of feeding port and packaging machine All other positions are designed with totally closed system to reduce dust points 2、 Main equipment and process analysis: 1 Raw material storage and supply according to the current situation of domestic cement and fly ash supply are mostly in bulk and the transportation equipment is popular, and the consumption of these two materials is relatively large in the production of dry mortar Referring to the capacity of bulk cement truck and the production capacity of this set of dry mortar production line, the capacity of silo is set as 50 tons/ Only, the bulk truck will send the material directly into the tank The price of sand drying equipment is expensive At present, the manufacturer of thermal insulation mortar mainly purchases the finished sand which has been dried and screened The finished sand is mostly packed in bags and stacked on the ground of the workshop The system is designed as an underground charging bucket, which can be unpacked directly on the bucket, or the bulk sand can be directly poured into the charging bucket with a trolley Auxiliary materials, such as rubber powder and fiber, are currently bagged, and light materials are mainly bagged, which are stacked on the floor of the workshop 2 Material metering cement and fly ash are fed to the metering scale by screw conveyor, and sand is fed to the metering scale by bucket elevator to extend the service life of the machine Three kinds of materials are collectively called cumulative metering For example, the materials used for one-time mixing are 450 kg of cement, 900 kg of sand and 150 kg of fly ash Input this data into the instrument or computer After the system is started, the system automatically starts the cement conveying screw When the cement enters the weighing bucket, the weight reaches 450 kg When the weight of two kinds of materials in the weighing bucket reaches 1350kg, the elevator stops When the total weight of three kinds of materials in the weighing bucket reaches 1500kg, the automatic measurement of three kinds of materials is completed For the auxiliary materials other than the above three materials, considering that the volume method is more reasonable for the measurement of light insulation materials, and its material consumption is small, the system is designed for manual measurement, which is transported to the upper platform by the well elevator, and directly put into the mixer by the manual hopper 3 A dry powder mortar mixer without gravity with a mixing capacity of 2 cubic meters, the filling volume of materials is generally 1.2 cubic meters, and the bonding mortar or anti crack mortar without light materials are mixed with a mixing weight of about 1.7 tons at a time After the materials are put into the mixer, the mixing time is generally set between 200-400 seconds according to the different properties of raw materials The discharging door of the mixer for producing dry mixed mortar should adopt the form of large opening door, which has a fast discharging speed, more importantly, uniform discharging and less residue in the mixer Continuously guarantee the quality of mixed mortar 4 The packaging dry powder mortar packaging machine is divided into two forms: valve port packaging machine and open packaging machine The valve mouth packing machine is to design the material outlet as a tubular structure, and the inlet of the valve pocket is sleeved on the outlet pipe of the packing machine When the mortar enters the packing bag and reaches the set weight, stop the canning When the bag is poured, the material in the bag flows reversely to close the tongue mouth at the bag mouth, so as to avoid the material leakage The valve port packing is adopted, the packing process is relatively simple, and the product appearance is beautiful But when using light materials, such as polystyrene particles into the mixer to mix together, the packaging speed of this kind of packaging machine is not ideal The discharge opening of the open packing machine is relatively large The packing bag with unsealed one end is directly covered on the discharge opening and fixed by the bag clamping mechanism The material is easier to be canned and suitable for the packing of various kinds of mixed mortar After the mortar enters into the packing bag to reach the set weight, the clamping mechanism is loosened and the sealing operation is performed by the seam wrapping equipment 3、 The main features of this form are relatively simple structure, compact equipment layout, less intermediate links, smooth material flow, small floor area and low comprehensive cost The selected equipment is relatively complete with complete basic functions In addition to the production of thermal insulation mortar, it can also be used for the production of ready mixed dry mortar and other special mortar As mentioned above, we have a simple discussion on the basic process of dry mixed mortar equipment with the basic type of dry mortar production equipment In practical application, the layout of the equipment varies due to the change of plant conditions and the requirements of investors for production automation For example, to increase the bulk output of dry mortar, we can produce ready mixed dry mortar, etc., which can be discussed separately.