40results about How to "Improve safety production performance" patented technology

A compacting table for casting moulding comprises a roller way frame, supporting rollers and a supporting roller driving mechanism. A compacting frame is arranged in the roller way frame, a vibrating motor is arranged on the lower portion of the compacting frame, supporting beams which are transversely arranged among the supporting rollers are arranged at the upper end of the compacting frame, spring assembling seats protruding out of the left side face and the right side face of the compacting frame are distributed on the lower portion of the compacting frame, a rubber air spring is arranged on the lower side of each spring assembling seat, a rubber spring is arranged on the upper side of each spring assembling seat, each rubber air spring and the corresponding rubber spring form a spring combination, a compacting frame seat is arranged on one side of each spring combination, the lower end of each rubber air spring corresponding to the corresponding compacting frame seat is fixed on th eupper side of a bottom seat body at the lower end of the corresponding compacting frame seat, and the upper end of each rubber spring corresponding to the corresponding compacting frame seat is matched with the lower side of an upper seat body at the upper end of the corresponding compacting frame seat. By the compacting table, moulding quality and efficiency can be improved effectively, equipment noise and influence on a workshop foundation during vibration can be reduced substantially.

The invention relates to an electronic ceramic production system. According to the electronic ceramic production system, electronic ceramic processing is achieved by combining multiple devices, the whole system is reasonable in processing, firstly, the raw material preparation device is used for preparing high-quality ceramic slurry, then the high-quality ceramic slurry is put into the forming device for automatic forming, a green body is put into the drying device for drying after forming, the green body is preliminarily dried, in order to prevented cracks from being generated in the sintering process, the green body is placed in the sintering device after drying, by designing a feeding and taking structure of the sintering device, a user cannot be scalded in the using process, ceramic production is completed after sintering is completed, surface treatment of a ceramic product is carried out in the next step, the grinding device adopted for surface treatment is good in grinding effect, and meanwhile, dust generated in the grinding process is collected, so that dust pollution in a processing workshop is avoided; and electronic ceramics produced by using the whole system are high inquality, the whole system is used in the workshop, so that cleanliness of the workshop is guaranteed, and the safety production effect is improved.

A switching power supply, a power adapter and a charger are provided. The switching power supply comprises a current-mode PWM control unit, a transformer, and a DC power supply circuit connected in series to a power compensation auxiliary circuit. The current-mode PWM control unit comprises a current detection terminal. An input of the DC power supply circuit is connected to an auxiliary voltage output. The auxiliary voltage output outputs an auxiliary voltage related to output voltage of the switching power supply. The power compensation auxiliary circuit is used to compare the output voltage and a threshold voltage. When the current output voltage of the switching power supply is not greater than the threshold voltage, the power compensation auxiliary circuit generates a DC voltage, thus providing a compensation voltage to the current detection terminal, otherwise no compensation voltage is provided.

The invention relates to an emulsion pump station control system, in particular to an unmanned intelligent control system for a mining emulsion pump station. The system comprises an automatic pressurecontrol system, an automatic emulsion proportioning system, a remote data transmission system and a data monitoring and fault diagnosis system which are electrically connected, wherein the automaticpressure control system compares pressure set by the system with the value of a pressure sensor; the automatic emulsion proportioning system is used for controlling the sizes of a clear water solenoidvalve and an emulsified oil solenoid valve according to the concentration of emulsion; and the remote data transmission system has a data transmission function. Through the system, a series of problems such as large manual input, low emulsion proportioning precision, unstable pump station pressure output, high production cost and the like are solved; and meanwhile, the system has protection and monitoring functions, is stable and reliable, and has important significance for realizing intelligent mine and coal mine safety production.

The invention provides an automatic identification and control system and method for dangerous sources around a crown block, and relates to the technical field of crown block design and safety production. According to the system and method, a video acquisition subsystem is formed by camera groups arranged around a crown block track to acquire real-time video data around the crown block and transmit the real-time video data to a crown block danger source identification and control subsystem; the subsystem analyzes each frame of received video data, identifies whether the danger sources for inducing a production accident exist in the video, sends out different danger warning information according to an identification result, gives out an alarm according to the danger warning information andcontrols the operation of the crown block; meanwhile, s man-machine interaction subsystem receives and stores the analyzed video data and provides a function of querying historical video data; and a video real-time display subsystem displays the analyzed video data in real time at a crown block cab and a ground operation controller end. According to the system and method, the traveling safety of the crown block is essentially improved.

The invention relates to the technical field of pipeline monitoring alarm, in particular to a pipeline leakage monitoring alarm system and a positioning method. The pipeline leakage monitoring alarm system comprises monitoring terminals, a network, a signal collector, a monitoring alarm positioning equipment and an oil conveying pipeline. The monitoring alarm positioning equipment is installed onthe oil conveying pipeline and at the oil conveying pipe first end and the oil conveying pipe tail end of the oil conveying pipeline in a matched mode, the monitoring alarm positioning equipment is connected with the monitoring terminals through the signal collector, the monitoring terminals are connected through the network, and the monitoring terminals are connected with the monitoring center through the network. According to the pipeline leakage monitoring alarm system and the positioning method, the oil conveying pipeline can be monitored in real time, the problems that petroleum is wastedand the oil conveying potential safety hazards appear due to the fact that the oil conveying pipe is leaked and the detection and positioning are not in time can be solved, the petroleum is automatically detected and reported, leakage data are accurately detected, manpower, material resources and financial resources are saved, and the environmental pollution is reduced.

The invention provides a zoning unloading and sublevel filling mining method based on a rhombic stoping structure. A to-be-mined panel is provided with a middle section stope and divided into sublevel stopes, and zoning is carried out along the trend of an ore deposit; in the middle-section stope, the rhombic stoping structures are adopted for stoping from top to bottom in sequence, mining is conducted in a step-by-step and filling-while-mining mode, and the rhombic stoping structures between the subareas are firstly mined. According to the method, the rhombic stoping structures of the lower mining units between the subareas are mined in advance, so that unloading is achieved to relieve damage of horizontal tectonic stress to the lateral wall of the stope; the large-size rhombic stoping structure is large in structural parameter, the bearing capacity is remarkably improved, the problem that the lateral walls of the adjacent stopes of the soft and broken ore deposit are extremely prone to collapse is solved, and the safety production capacity of the stopes is improved. In addition, the rhombic stoping structures are distributed in an up-and-down staggered mode, ore loss can be reduced, and mining efficiency is improved. According to the method, the aim of safely, efficiently and economically exploiting the low-grade soft broken thick and large ore deposit at low cost under the condition of high-level tectonic stress is achieved.

The purpose of the present invention is to provide a process for producing diphenyl carbonate by non-solvent method, which can improve product quality and reduce product production cost and waste discharge; the steps of the process include: melting phenol and heating up to 110-130°C ; Use DMF or N, N-dimethylaniline or the analogue of the two as a catalyst, the charging amount is 0.03-3% of phenol; keep the temperature, feed phosgene under stirring conditions and carry out photochemical reaction; then be warming up to 140 ‑180°C for 1‑5 hours; then distilled under reduced pressure to obtain the product. The new process of the invention improves product quality and output, completely avoids sodium chloride mother liquor water and waste water, reduces distillation residue, reduces production cost, and achieves clean production. The operation of phenol system recovery and the special batching process are reduced, which greatly improves the production efficiency; the operation is more stable, and the safety and productivity are improved.

An optical coupling type electromagnetic relay includes one optical coupling A, one relay drive circuit B, one electromagnetic type relay J, wherein optical coupling A for realizing power supply isolation between control system circuit and controlled electric system and transmitting switching signal, relay drive circuit B providing drive electric energy for electromagnetic type relay J switch.

The invention relates to a mine large tunnel dust cleaning device, concretely a dustproof pull-type tunnel sprinkling truck used in the mine. The sprinkling truck mainly comprises a mine electric locomotive and water-tank vehicles, and is characterized in that the base of the mine electric locomotive is mounted with a motor and a high pressure water pump, a water spray frame is mounted at the rear part of the mine electric locomotive, water intake pipes are connected between the mine electric locomotive and the water-tank vehicles, connection pipes are arranged among the water-tank vehicles, the motor is connected with the high pressure water pump through a coupling, the water intake pipe of the high pressure water pump is connected with the water intake pipe of the mine electric locomotive, the water outlet pipe of the high pressure water pump is connected with the water pipe of the water spray frame, and the starting button of the motor and the valve switch of the water pipe are mounted on an operating console. The truck not only reduces the labor intensity for the workers, but also voids the safety hidden trouble brought to workers because of frequently passing through the mine car when flushing the tunnel, and also saves the water consumption for flushing tunnel, effectively reduces the dust in the tunnel by sprinkling in the large tunnel, and further improves the down-hole working environment to accord with the safety and quality standardized requirement. The product has very strong adaptability to down-hole working environment.