Probability Screening in Salt and Chemical Industry

2 factory technical appraisal meeting. The following appraisal conclusions have been drawn; Model 225, sieve, bucket fighting is reasonable, technical water ten 1.

The energy and indicators have reached the leading level of domestic similar products, and are suitable for the screening of iodized salt and other powder materials.

The sieve set has a 1 thank point compared with other screening equipment, with a large production capacity, high screening accuracy, high energy consumption, low noise, low mesh screen, long service life, small size, and easy maintenance and replacement of the screen.

To guide the basis of production. The test results of the product prove that the performance of the main parameters meets the original design specifications and can be delivered to users so that Jll can recommend the relevant leadership departments and your factory to switch to mass production as soon as possible so as to produce greater economic and social benefits.

It is hoped that the supporting materials for feeding and discharging will be selected and matched, and other materials and materials tests will be more extensive. And set up a test bench.

Structure and performance This equipment is a kind of vibration machinery that uses vibration motor to directly excite motor vibration. The machine is composed of 1 screen box 2 vibration damping device 3 screen and pre-tensioning device 4 vibration motor 5 discharge port 6 distributor 7 screen box cover dust exhaust vents and other parts.

Screen box This part is made of stainless steel side plate stainless steel middle channel plate stainless steel pipe beam is not pound steel screen box bottom plate main beam motor base plate sub beam beam and other parts of the base and so on. The double channel structure of the box reduces the load of the main beam and the auxiliary beam, shortens the length of the screen by 50, which greatly reduces the thickness of the side plate thickness by providing a grooved steel plate along the outer corner of the equipment side panel. The overall rigidity is increased; the tube beam penetrates the wall and firmly connects the block side plates. The main girder is subjected to high-temperature annealing and aging treatment to eliminate stress and ensure stability during use. The component and the side plate are connected with strong bolts, and are installed using a torque wrench to prevent loosening. The back of the carcass is equipped with a lean sieve, which can be used to tension the screen with only 3 bolts per screen. The replacement of the screen takes only a few minutes, which greatly facilitates the replacement of the screen; the screen is set to The pre-tensioning method avoids the use of pockets, and the side panels are provided with observation holes. In addition to observing the screening conditions, they can also assist in replacing the screen.

This machine uses a rubber spring in order to reduce noise. This type of spring has a long service life and a relatively stable stiffness value. It overcomes some of the shortcomings of metal magazines; it restricts resonance amplitude at startup and shutdown. The tower base plays the role of factory protection, and the net can also be used as welded mesh punching nets. After the screening machine is changed to dual channels, the width of each screen is exactly the same as the standard network. The life of the standard network can be increased by 13 while the strength is also It can be ensured that the screen is installed by using the tube beam in the front section of the screen box and the tensioning device at the rear, and the special sealing rubber gaskets are arranged on both sides of the screen. The rubber gaskets and the side plates on both sides of the screen tensioning material are attached. tight. Both guarantee the degree of sealing. , Baohu plant screen is not worn; (4) vibration motor This machine uses two vibration motors symmetrically arranged, the two ends of the rotor shaft of the motor are installed with a group of equal mass of fan-shaped eccentric block, the size of excitation force through the adjustment of eccentricity The angle of the block is achieved. The mechanical strength of this motor is higher than that of an ordinary motor, and the bearing adopts a series bearing of large clearance. Large carrying capacity. Insulation class.

The discharge port is seven in accordance with the standard six-layer screen, but. According to process requirements. Layers and layers can be laminated into one outlet. Therefore, the number of material outlets is changed. Because the discharge is connected to the screen, the exit design angle can be reduced by using the exciting force of the screen, and the direction of the discharge port can be changed. Technology market distributor due to the use of the machine, salt added. 1 The grading equipment of the process, so the place of the feeding system of the sieve, and the old home must set up a special cloth, device, in order to ensure that the effective screen surface is fully operational.

The machine is placed at the end of the screen box and the screen machine linkage body, using the screen machine exciting force, so that the cloth shaker and the screen body vibration.耽 Reduce the degree of equipment, save plant height and hoist height, save two vibration motors, and reduce costs. The distributor can flexibly adjust the feed thickness to ensure the screening accuracy and processing capacity of the screen.

The screen box cover and the dust exhaust vent screen box cover are made of glass fiber reinforced plastic material. The secondary molding, light weight, good sealing and interchangeability. Dust extraction vents are arranged in the upper part of the box. Through the test, an air extraction port will be installed in the lower part of the box to allow the screen to operate under micro-negative pressure, and a micro-vortex flow will be formed, which will reduce the number of dust anvils to prevent dust spills.

3 Screen and pre-tensioning device Screen is made of stainless steel screen mesh aperture amplitude frequency noise decibel capacity power weight maximum dynamic load N front and rear end technical parameters, 1 technical parameters of the formula for the formula to take 兀52025 as an example (1) mechanical vibration index Body amplitude vibration frequency, 8 (1) or therein. Exercising anti-frequency abundance 1 g gravitational acceleration, 981 heart 2 vibration degree, general 162 throwing index a screening blood inclination material average speed material actual average degree violation U, 7. 窆 output coefficient Cn, material property influence coefficient G sliding The remote-acting influence coefficient 5 amplitude eccentricity moment cutting, 1 eccentric child 26 production capacity P material loose density, 2 the determination of the technical parameters and the calculation of the cost, the number of choices.

0 Amplitude Normally the amplitude of the screening machine is 3,61. Taken with a horizontal angle of 42 30.6, two vibrating motors with 82, 12 = 3681. The vibrating heavy scene is where 3 throwing fingers data formula 2 is multi-layered due to probability. Due to the type of slope from the top to the bottom, the screening efficiency, so the throwing index is large, which can greatly improve the screening effect.

Material actual, average, degree. According to Formula 4, according to the throw index 0, the material equivalent resonance parameter 1 is negative, so the quality of the material is not counted, and the total weight of the reference element is 32,0. The medium reference weight is 320kgcms2, 30002=6000, which meets the requirements. . 3 Selection of vibration isolation bullets The calculation of Chinese parts only uses the yellow, stiffness. Use 8 rubber springs, 4 each before and after.

After the enthalpy of the weight of the enthalpy has been estab- lished after the front spring support distance, the required amount of the previously ejected yellow discharge end is just 560 胗 and the single spring just after casting 1 = 5 = 4 is required for the spring feed end. Stiffness 6601 claws, single stiffness, calculation and determination of rubber springs. Use 54013140 rubber bullets, spring yellow stiffness 1 = check the rubber's shear modulus, = 0.45 installation and use a vibration motor. The size of vibration excitation force of the vibration motor has been adjusted to the best position according to the user's needs and the granularity of the material before leaving the factory. The vibration motor is installed, and the torque value of the power plate 亍 is adjusted to 16 times.

At this point, the motor will no longer loosen. Excitation force adjustment, take the factory protective cover to adjust the eccentric weight to the corresponding mark, tighten and wear protective cover, you can use. Adjustment should pay attention to the direction of rotation of the eccentric weight should be caused, the two motors must be the same excitation. After the motor runs 500, it should be filled for the first time, and then every 10001! Oil injection times, the grease type is molybdenum sulfide composite calcium base grease, and each oil injection amount 2 is normally used. After starting the machine, the following details should be frequently checked to see if the material being sieved is uniform in thickness on the screen surface. It can be seen whether the distributor is working properly and whether the capacity of the distributor is matched with the hoisting capacity. If there is any question, the feeder should be adjusted in time; Whether the fastening fastening bolts are loose or not, if noise and temperature rise at the connection site prove that the fastening bolts have loosened, they should immediately stop using the torque wrench to tighten the bolts; check the pre-tensioning device of the screen if the screen meshes are generated. Deflection proves that the screen pretensioning device is unevenly tensioned, and adjustments should be made. The perspiration screen and hand hole will be easily tensioned and the screen replaced. However, care should be taken to ensure that the screen is on both sides. The sealing rubber pad and the side plate of the screen box are naturally tightly adhered so as to avoid leakage of the material; after stopping the feeding, the screen machine runs after 2 and 1 stops, so that the remaining material on the screen surface is sieved cleanly, and attention should be paid when there is no shutdown. There are materials to avoid compaction and block the screen. In the event of sudden shutdown, the material on the screen must be manually cleaned with a long handle brush to prevent the above phenomenon from occurring. When the equipment is installed, the inlet and outlet boxes are And a connecting member between the holder and the gap left in the 5,1, and the implementation of interference connected to prevent collision.

The probability of screening in foreign countries, and the use of chemical industry 1 has been very extensive, I hope that the plant in China's salt and chemical industry applications and the majority of the use of manufacturers and a large number of technical personnel and experts to make efforts to improve the salt and chemical industry The industry's production capacity and the product's quality accuracy are made available on page 28 to be repaired. Several nearby boards must be dismantled at 1 inch. New materials can be replaced. Special kind of inclined board fixtures are designed. (1) Disassemble the nearby ramps. board. It is very easy for him to remove any block in the ramp at any time.

4 Conclusion In the design of the last years, we chose the inclined plate clarifier made of glass fiber reinforced corrugated plate as the sloping plate material, through the cooperation project of China and Spain in the salt and salt engineering technology research institute of Yinshan Salt Field, Hebei Province. The successful application of refined salt washing project has achieved good economic and social benefits.

The domestic and international newsletter has achieved remarkable results in the comprehensive development of the Qaidam salt lake. The comprehensive development test of the Jinan salt lake in the eastern part of the Qaidam Basin has achieved remarkable results. CITIC Guoan Lithium Technology Co., Ltd. and Qinghai Kunlun Group joined forces to overcome the comprehensive extraction process of lithium carbonate, potassium sulfate and boric acid. Test product It is understood that. Golmud City, Qinghai Province has been conducting lithium extraction experiments in the salt lake of Dongtai Jinal since the early 1990s, and conducted a large number of feasibility studies. Later, with the powerful China International Trust and Investment Corporation, two companies invested 46 million yuan for the industrial production test of salt lake lithium potassium and boron integrated products. At present, the trial of industrial production of boric acid, lithium potassium sulfate, has been successful. It is reported that CITIC intends to invest 400 million yuan this year, according to