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Xinxiang Zhenying Mechanical Equipment Co., Ltd.

14 2023-01
Powder sieving machine introduction
Powder sieving machine introduction
  Fine Powder sieving machine  Powder sieving machine usually called ultrasonic vibration sieve.In the daily production process,many fine powder materials are screened,and these fine powder materials are difficult to screening and the screening output small. For this reason,Zhenying company has developed an ultra-fine powder vibrating sieving machine(ultrasonic vibration sieve).  Our fine powder sieving machine is completely independently developed,Using self-developed ultrasonic system,The screening mesh number can reach 625 meshes, which solves the screening problems of blockage,easy agglomeration,and high density.Ultrasonic vibrating sieve machine adopts a special ultrasonic grid structure.The conversion from built-in ultrasound to external ultrasound.The external ultrasound can be replaced easily and more efficiently.highest frequency can reach 18Hz.Compared with the ultrasonic systems of international well-known brands,Our ultrasonic system has little difference in screening efficiency and service life,but the price is relatively lower.  Product name:Ultrasonic Vibration Sieve  Screening accuracy:300-625 meshLayers:1-5 layers  Powder sieving machine Advantage:  1.Accept customer customization and provide screening solutions  2.Good airtightness,environmental protection and sanitation  3.High safety and easy operation  4.The vibration frequency is adjustable,high screening accuracy,and the screening accuracy can be increased by 30-100%  Ultra-fine powder vibrating sieving machine Application:  Chemical industry: washing powder, resin powder, pigment, micro powder, paint, soda ash, lithium battery, negative electrode material, etc.  Abrasive industry: quartz sand, mud, etc.  Food industry: sugar, salt, alkali, monosodium glutamate, milk powder, soy milk, yeast, fruit juice, soy sauce, vinegar, etc.  Papermaking industry: coating paint, clay slurry, black and white liquid, waste liquid, papermaking liquid, waste water recycling.  Metallurgical industry: titanium oxide, zinc oxide, electromagnetic materials, metal powder, electrode powder  Powder sieving machine Precautions:  1.Each ultrasonic system includes an ultrasonic vibrating screen power supply,an aviation connection patch cord,a transducer,and a grid.Please do not interchange and use the ultrasonic system of other manufacturers to avoid unnecessary loss.  2.In the case of meeting production requirements,the maximum vibration amplitude should not exceed 200μm  3.The screen mesh must be tight,otherwise it will affect the ultrasonic output and vibration effect  4.If the material is conductive,please use an extended ultrasonic aerial connection cable to isolate the power supply of the ultrasonic vibrating screen from the screening site to prevent the material from entering the power box and causing a short circuit.  5.When replacing the screen,scrape off the residual glue on the screen with a sharp wallpaper knife.Do not use the angle grinder wheel to polish it to prevent damage to the Ultrasonic System.
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14 2023-01
What matters need to pay attention to before the rotary vibrating screen starts
What matters need to pay attention to before the rotary vibrating screen starts
  Rotary vibrating screen is the most widely used in the vibrating screen family, because of its shape characteristics and the characteristics of screening materials, it is also called a round vibrating screen or a round screen powder machine. Its applicable materials are very wide, and liquids, granules, and powders can be sieved. It is precisely the liberalization of customization and high penetration that has created a high market share of rotary vibrating screens. Then, the precautions for the start-up operation of the rotary vibrating screen have become the things that the rotary vibrating screen manufacturers need to synchronize and popularize, so that users can use it better. The precautions before turning on the rotary vibrating screen will be popularized today.  1. Remove the transportation support frame:  In order to avoid damage to the shaker equipment during transportation, the rotary vibrating screen manufacturer will install three support frames made of flat steel before leaving the factory. The user requires that the support frame must be removed before the first startup. Otherwise, the rotary vibrating screen cannot operate normally, and there are signs to indicate the installation position of the support frame, and the general position is near the vibration spring.  2. Check the tightening of the accessories of the rotary vibrating screen:  Before using the equipment, carefully check the firmness of the vibration motor, locking ring, shock-absorbing spring and other components; check the fasteners of the vibrating screen, the bolts of the whole machine are tightened in place before leaving the factory, but the user is required After using for a period of time, the bolts of the whole machine are required to be tightened again, and the bolts will loosen under the condition of stress relief. If any looseness is found, it should be tightened in time.  3. Fixed corner:  Since the vibrating screen is a screening purpose achieved by vibrating motor, high-frequency vibration will be generated during screening, and the phenomenon of the overall movement of the screen machine will be generated. Therefore, the bottom barrel needs to be fixed at the corner when it is used for the first time, which can effectively protect the equipment and Improve screening efficiency.  4. Screen tightness:  The tightness of the screen of the rotary vibrating screen is generally installed in place before leaving the factory, but the equipment made by some small manufacturers is difficult to say. The user should pay attention to the tightness of the screen when using the rotary vibrating screen for the first time, the screen is too loose Material penetration rate will drop.  5. Check the running direction of vertical vibration motor:  Vertical vibration motor is the vibration source of the rotary vibrating screen equipment. The rotation direction of the vibration motor has a certain influence on the screening performance. The direction of the vibration motor normally rotates clockwise. In addition, users can flexibly adjust the angle of the eccentric block of the vibration motor and change the material screening method. The user should adjust the eccentric block to the appropriate position according to the different moisture content, viscosity and specific gravity of the material.  6. After the feeding is completed, let the round sieve powder machine continue to run for about 5 minutes, so that the screen and bottom materials are completely discharged to avoid the residual materials from getting wet, the next screening effect of the sound, or due to the replacement of materials and mesh The problem of mixing.
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14 2023-01
Summary of solutions for vibrating screen
Summary of solutions for vibrating screen
  1. Regularly check the tension and flatness of the screen. When replacing the screen, it must be replaced in strict accordance with the requirements of the linear vibrating screen manufacturer. There must be more than 2 people to cooperate. One person is responsible for tensioning the screen and the other is responsible for fastening. Screen. It is worthwhile to pay attention to the uniform and quantitative scientific feeding method when feeding, which can effectively avoid the sieving surface loosening and damage caused by the uneven thickness of the material stacked on the sieve surface.  2. The installation of the screen box is generally the responsibility of the shaker manufacturer. If there is a phenomenon of non-feeding caused by the level of the screen box, please contact the manufacturer immediately to ask for after-sales service, and please have a specialized technician come to the scene to carry out the horizontal exposure Adjustment of the horizontal plane.  3. The maintenance of the vibration motor's excitation force needs to be performed on a regular basis for lubrication and maintenance. If the vibration motor's excitation force needs to be adjusted due to material replacement or output changes, it can increase the allocation of the eccentric weights above and below the vibration motor. Number of chunks.  The upper hammer mainly generates horizontal excitation force, thereby allowing the material to move horizontally on the screen surface, and completes the process of the material diffusing outward from the middle. At the same time, the magnitude of the horizontal vibration amplitude determines the speed of the material movement; This can be achieved by increasing the weight of the upper eccentric weight. As the weight increases, the vibration amplitude increases, otherwise it decreases.  In order to better achieve better screening efficiency, you need to combine with the manufacturer to make a suitable adjustment plan according to the material characteristics.  4. If the original shaker spring equipped with aging needs to be replaced, it is recommended to choose a support spring with a certain toughness as the support of the linear vibration screening machine to avoid damage to the support spring due to excessive rigidity. If it is not clear, you can directly contact your equipment manufacturer and ask them to equip them with another damping spring of the same model.  In a word, in the actual production screening process, the efficiency of the linear vibrating screen is a dynamic balance maintenance issue. Any unreasonable component or link may cause the vibrating screen to appear similar to "no feed, no feed". Such as the problems that affect the screening accuracy and screening efficiency, what we have to do at this time is to calm down, find the real cause of damage and optimize and adjust it. It is also a good choice to seek professional help from the shaker manufacturer.
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14 2023-01
To improve the screening efficiency of linear vibrating screen, these aspects should not be ignored
To improve the screening efficiency of linear vibrating screen, these aspects should not be ignored
  Linear vibrating screen is one of the main equipment in the crushing and screening process, and also the key equipment for providing qualified materials for subsequent operation. Its screening efficiency directly affects the subsequent operation. In the actual plant, the main factors affecting the screening efficiency of linear vibrating screen include material properties, screen surface structure parameters, vibration characteristics parameters and so on. Below, we will analyze how the above aspects affect the screening effect of linear vibrating screen.   First、 Material properties  The properties of the selected materials are one of the main factors affecting the screening efficiency of the linear vibrating screen, and the material properties are mainly reflected in the loose density, particle size and shape of the materials.  1. Loose density of selected materials  Generally, the loose density of materials is large and block particles, easy to pass through the screen, and the screening efficiency is high. On the contrary, the loose density of materials is small and the powder materials are not easy to pass through the screen, and they are easy to stay on the screen, which will limit or block the screen, so that the effective screening area of the sieve will be reduced, and the screening efficiency will be affected. In order to ensure the screening efficiency, the loose density of the selected materials should be controlled.  2. Selected material size  The particle size of selected materials is also an important factor affecting the screening efficiency of linear vibrating screen. The size of the particles of the materials entering the screen shall meet the size of the sieve hole. The size of the particles is small and easy to pass through the screen, and the size of the materials is not easy to pass through the screen. In order to ensure the screening efficiency, the particle size of the materials entering the screen shall be strictly controlled.  3. Shape of materials in sieve  The shape of the materials into the screen will affect the sieve property. Generally, the particles are full of grinding and the mineral particles with specifications are easy to pass through the screen. The irregular shape of the particles, such as long strip and sheet shape, is poor in screening rate. Therefore, it is necessary to ensure that the particle shape of the crushed material conforms to the sieve standard.  Second、 Screen surface structural parameters  The structural parameters of the linear vibrating screen are mainly reflected in the length and width of the screen surface and the size and shape of the screen.  1. Screen length and width  The length of screen surface of linear vibrating screen mainly affects the screening efficiency and the screen width affects productivity. The screen surface of straight screen is longer, the material stays on the screen surface for a long time, and the screening opportunity is more, which will improve the screening efficiency. In fact, the width of screen surface has different influence on screening efficiency and screen length on screening capacity.  The relationship between screening efficiency and the time of material on the whole screen is that at the beginning, the screening probability is higher. Because there are many fine-grained materials on the screen surface at the beginning, the screening probability is larger in unit time. After a certain time, the particle size of the materials left on the screen surface is mostly hard to screen materials close to the size of the screen. Even if the material stays on the screen surface for a long time (i.e. the length of the screen surface is large), it is difficult to increase the screening probability of the material, which leads to the decrease of the screen machine working efficiency. Therefore, the selection of the appropriate screen surface length can effectively improve the screening efficiency, and the ratio of the length to width of the straight screen surface is 1:2-1:3.  2. Shape and size of sieve  The selection of the shape of the sieve of the linear vibrating screen mainly depends on the screening granularity of the materials entering the screen and the product use under the screen. Compared with other shaped screens, the size of the materials passing through the circular sieve is smaller and the size of the materials passing through the rectangular sieve is larger. Therefore, in order to obtain higher screening efficiency, the different screening materials should be selected Same shape of sieve.  Third、 Vibration characteristic parameters  The vibration characteristic parameters of the linear vibrating screen include the inclination angle of screen surface, the direction angle of vibration, the amplitude and the vibration frequency.   1. Screen inclination  The inclination of the screen surface of the linear vibrating screen is related to the equipment processing capacity and screening efficiency. When the screen face inclination increases, the throwing strength of the material on the screen will increase, the material movement speed on the screen surface will increase, and the processing capacity of the vibrating screen will be increased. However, the retention time of the material on the screen is shorter, the material passing through the screen is less, and the screening efficiency is reduced. Otherwise, the processing capacity will be reduced and the screening will be reduced Efficiency is high.  In order to control the screening efficiency of the vibrating screen in a relatively ideal range, the inclination angle of the screen surface of the general linear vibrating screen is between 0 and 8 °.  2. Vibration direction angle  The angle between the vibration direction and the upper screen surface is called the vibration direction angle. The larger the vibration direction angle, the shorter the distance of mineral particles moving in each throwing movement, the slower the speed of moving on the screen surface, the more adequate the screening of materials, so the screening efficiency is higher. The smaller the vibration direction angle, the longer the distance of material moving forward on the screen surface when throwing, the shorter the time passing through the screen surface, the material can not be fully screened, so the screening efficiency is low. In order to ensure the screening efficiency of the linear vibrating screen, the range of the vibration direction angle is 30-60 ° is appropriate.  3. Amplitude  The amplitude of the linear vibrating screen determines the energy of the material particles moving on the screen surface. The larger the amplitude, the greater the amplitude of the material moving in the direction of the vertical screen surface during the screening process, the less the blockage of the screen, the more favorable the screening, the better the screening efficiency; otherwise, the screening efficiency is poor. Generally, the selection of amplitude is determined by the size and properties of the materials entering the screen. For materials with larger particle size, it is suitable to choose linear sieve with larger amplitude and lower frequency; for materials with smaller particle size, it is easy to select linear screen with smaller amplitude and higher frequency.   4. Vibration frequency  The vibration frequency of the screen surface of linear vibrating screen mainly affects the movement state of mineral particles, and the low or too high frequency is not conducive to the material passing through the sieve. The vibration frequency is too low, the probability of movement of mineral particles in the direction of vertical screen surface is small, and the screening rate is low; the vibration frequency is too high, and the vibration of mineral particles is easy to be confused, which affects the screening efficiency. Generally, the range of vibration frequency of the screen surface of the linear vibrating screen should be controlled within 15hz-30hz.  The above is the influence of the linear vibration screen screening efficiency of several aspects, if you want to effectively improve the screening efficiency of the linear vibrating screen, these aspects can not be ignored!  In the actual plant, each mineral has its own mineral characteristics, and has differences in density, hardness, gangue content, etc. Therefore, when selecting equipment, mineral processing test should be carried out first, and the suitable linear vibrating screen shall be selected through the test results, so as to ensure that all parameters of the equipment conform to the mineral particles.
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