1、 After the installation of the pulse dust collector, it is necessary to conduct debugging and inspection to ensure that the equipment can operate. The specific aspects to be checked are as follows: 1. Check the pulse dust collector; Are the components of each part clear, are the equipment numbers, markings, etc., and is the painting done well. 2. Are all the skeletons and cloth bags inside the box correctly connected to the flower board, are the fasteners tightly fixed, and are there any twisting of the filter bags on the skeleton. 3. Check if the level gauge of the ash hopper displays the correct position. 4. Check whether the guardrails, escalators, and platforms are securely installed, whether the passages are functioning properly, whether the lighting system is working properly, whether the body or flue is clean, and whether there are tools or other materials. 5. After pressure testing, check whether the joint surfaces of the pulse dust collector box, air chamber, channel, ash hopper and other devices are welded tightly, whether there is air leakage in the door, and whether the insulation material is used. 6. Check whether there is water accumulation, oil stains, or other impurities in the components such as the pulse dust collector body, channel, and gas tank, and whether the inlet door and ventilation port are closed. 7. Check if the pulse dust collector discharges dust smoothly without blockage or leakage, if the heater is functioning properly, and if the temperature measuring points have been installed correctly. 8. Check if the pulse system can operate normally, but it should be isolated during the first startup. 9. Is the lubricating oil level of the pulse dust collector, fan, compressor, and other rotating machines at normal values, and are all rotating machinery in standby mode. 10. Check if the inlet and outlet of the pulse dust collector and the bypass control valve are closed. 2、 The use effect and characteristics of pulse dust collector. Pulse dust collector is the advantage of various types of dust collectors such as collection chamber back blowing and pulse spraying, overcoming the disadvantages of insufficient kinetic energy intensity during chamber back blowing and simultaneous filtration and dust cleaning. Therefore, it increases the adaptability of the dust collector and improves the dust collection efficiency. Pulse dust collectors are widely used in dust removal systems such as crushing, packaging, warehouse roofs, clinker coolers, and various grinding machines in cement plants. They are also used for dust collection of exhaust gases from metallurgy, chemical, mechanical, and civil boilers. When the dust removal effect of the pulse dust collector is not ideal, first check whether the installation of the filter bag is correct. The typical pulse dust collector relies on the elastic expansion ring sewn at the filter bag mouth to press the filter bag into the flower plate hole, and strictly distinguishes the middle box dust chamber from the upper box clean chamber through the flower plate. If the elastic expansion ring at the filter bag mouth fails to fit tightly with the flower plate hole, resulting in gaps, it will cause the dusty airflow to directly enter the clean air chamber, and the exhaust pipe outlet will emit dust. You can check the installation of the dust removal filter bag one by one, and if any gaps are found, they should be tightly sealed. In addition, the installation quality of the filter bag is one of the monitoring and inspection aspects during the installation process of the pulse dust collector. As the filtration process progresses, dust accumulates on the outer surface of the filter bag to form a dust layer, reducing the pores on the outer surface of the filter bag and improving dust removal efficiency. The function of "dust filtration" can remove fine dust or more. Therefore, it is correct to measure the dust removal efficiency of the pulse dust collector after continuous use for one month. Another issue is that damaged filter bags can lead to the direct discharge of dusty airflow and the emission of dust from the exhaust pipe outlet after the dust collector. For large pulse bag filters used for offline dust cleaning, the following method can be used to determine the location of bag breakage: manually operate each compartment to clean the dust, close the air outlet valve of one compartment at a time, and pay attention to the exhaust pipe outlet. When the compartment with bag breakage stops filtering, the exhaust pipe outlet will no longer emit dust, and based on this, which compartment has bag breakage can be determined. Also, for dust collectors that only use partitions to separate the inlet and outlet channels, it is necessary to check whether the middle partition is welded tightly. If there are welds or gaps in the middle partition, the dust in the air intake will enter and exit the air duct, causing dust to fly out of the exhaust pipe outlet. The welding quality of the intermediate partition separates the inlet and outlet air channels, which is another quality inspection in the production and installation of dust collectors. 3、 The working principle of a pulse dust collector is that when dusty gas enters the pulse dust collector through the air inlet, it first encounters the inclined plate and baffle in the middle of the air inlet and outlet, and the airflow turns to flow into the ash hopper. At the same time, the airflow speed slows down, and due to inertia, coarse particles of dust in the gas directly flow into the ash hopper. Playing a role in pre dust collection, the airflow entering the ash hopper is then deflected upwards and captured on the outer surface of the filter bag through the filter bag equipped with a metal skeleton inside. The purified gas enters the upper clean room of the filter bag chamber and is collected at the air outlet for discharge. During the process of purifying the dusty gas through the filter bag, as time increases, more and more dust accumulates on the filter bag, increasing the resistance of the filter bag and gradually reducing the processing air volume. To work normally, the resistance should be controlled within a range. Once the range is exceeded, the filter bag should be cleaned. During dust cleaning, the pulse control instrument sequentially triggers each control valve to open the pulse valve. The compressed air in the air bag is sprayed into the corresponding filter bag through the Venturi tube through each hole of the spray pipe, and the filter bag is instantly and sharply sprayed. Expansion causes the dust accumulated on the surface of the filter bag to fall off, and the filter bag returns to its initial state. The dust falls into the ash hopper and is discharged from the machine through the ash discharge system. As a result, the dust accumulated on the filter bag is periodically pulse blown to clean the dust, allowing the purified gas to pass through normally and the dust removal system to operate. 4、 The selection of filtering speed for pulse dust collectors is a key factor in the selection of dust collectors, which should be determined based on the properties of smoke or dust, application scenarios, dust particle size, viscosity, gas temperature, moisture content, dust concentration, and different filter materials. When the dust particle size is fine, the temperature and humidity are high, the concentration is high, and the viscosity is high, it is advisable to choose a low value. Such as ≤ 1m/min; On the contrary, a high value can be selected, generally not exceeding 1.5m/min. For dust particles with large particle size, at room temperature, dry, non sticky, and high concentration, 1.5-2m/min can be selected. When selecting the filtration speed, the net filtration value should be calculated when reducing the filtration area of one room (during dust cleaning). The dust cleaning control of the pulse dust collector adopts a microcomputer programmable controller, with three control modes: constant pressure (automatic), timed (automatic), and manual. 5、 The layout of the process and production flow of pulse dust collectors should be comprehensively considered based on the production plan, metal types, process level, factory site and plant conditions, and dust removal technology, taking into account the dust removal technology that you are not familiar with. The design and core making departments with less pollution should be arranged on the downwind side of the low-frequency wind direction during non heating seasons in centralized heating areas, and on the downwind side of the low-frequency wind direction throughout the year in non centralized heating areas. The sand treatment and cleaning departments should be separated from other departments in the workshop using lightweight materials or solid walls. For large casting factories, the sand treatment and cleaning departments can be arranged in separate workshops. The pouring area should be arranged in a well ventilated location in the workshop. It is advisable to fix the work station or site for processes such as box closing, sanding, unboxing, sand cleaning, polishing, cutting, and welding repair to facilitate dust prevention measures. When cleaning workbenches for large-scale production are arranged in a continuous row, each workbench should be separated. When arranging process equipment, the reasonable layout of the process flow of the dust removal system, including the position of the dust hood, the laying of the air duct, the position of the platform, the setting of the dust collector, the centralized treatment of dust or sludge, etc., should provide the conditions of the plane position and three-dimensional space.
