The function of a quick-release valve is to rapidly exhaust air from the controlled device. It is normally located adjacent to the controlled device, rather than requiring exhaust air to return and exhaust through the control valve. This decreases release time.
A quick release valve allows the brakes to release quickly and fully, by allowing
the pressurized air to exhaust near the Brake Chambers. a
quick release valve is placed close to the front brake chambers between the
foot valve and the air chambers.
When the brakes are applied, air from the foot valve flows through the quick release valve to the chambers in the normal way Amercian Truck Brake Valves,Bendix Air Brake Valves ,Air Brake Control Valves,Brake System Spare Parts SHANGQIU FLAT WORLD MACHINERY CO.,LTD , https://www.flatworldtrucks.com
With China's accession to the WTO and the rapid development of the national economy and highway construction, the road construction industry has higher and higher requirements for the performance of asphalt mixing equipment. Not only the technical performance of the equipment is advanced, but also the transportation, installation and commissioning are fast. Convenience. Based on the above ideas, based on the introduction of the mature technology of the British Parker Company and the German BENNINGHOVEN Company, the West Building Company has developed the J-series (J2000, J3000, J4000) container module with international advanced level and obtained national patents. Stirring equipment.
Recalling the current domestically produced asphalt mixing equipment, it is divided into several assemblies in terms of functions. Its external dimensions are different, and it is easy to appear in the road and rail transportation. It is super high, super wide and super long, especially at the equipment exit. When the equipment is installed, the cement foundation is required to fix the equipment, and the connection between the assemblies is relatively large, and the installation is cumbersome. The equipment demolition and relocation is time-consuming and laborious. This is also the problem that the asphalt mixture mixing equipment exhibits in the construction of high-grade highways with increasingly fierce competition and generally shortened construction period requirements. The container modular mixing equipment is composed of several international standard containers, which completely solves the above problems, so that the asphalt mixing equipment is unimpeded in the transportation process of domestic and international roads and railways; the installation of the equipment is also extremely simple. A major change in the structure of traditional asphalt mixing equipment.
I. Analysis of structural characteristics
The characteristics of the container modular mixing equipment are: modular design, and the shape design of each module adopts the standard of international standard container. The eight angular positions of each module are respectively welded with the corner pieces for standard container fixing. The design allows the modules to be stacked and fixed like a container. In the overall structure of the equipment, except for the batcher and the central control room, the remaining assembly modules are connected in a juxtaposed or stacked manner, and the bridge code and the double-head single cone of the fixed container will be placed at the corner position. The two modules are accurately connected together and are fixed with several bolts on each of the two connected module frames to make the connection between the modules more secure. The advantages of this design in terms of structural characteristics are self-evident.
1. The complete container modular structure design makes the equipment shipped quickly and safely. When the general asphalt mixing equipment is delivered, the platforms, railings, ladders, dust removal pipes, asphalt pipes, hot oil pipes, fuel pipes and finished silo rails of each assembly need to be separately packed or bundled. Due to the variety and specifications, this brings great difficulties to the delivery; at the same time, the ultra-high and ultra-wide parts of the equipment need even special vehicles to be solved; the deformation of the structural parts is easy to occur during transportation. Affect the installation of the device. The container modular asphalt mixture mixing equipment, each module is a standard container design, with the protection of the overall frame. When shipped, the equipment can be transported in container ships, container trucks or railway wagons, and is not subject to road conditions during transportation.
2, easy to install and debug. Generally, the installation of asphalt mixing equipment needs to be grounded and the equipment is fixed on the foundation. Moreover, in the assembly, various pipes, rails and interconnecting parts must be installed separately. Some tests can only be carried out after the construction site has been installed, so that certain hidden dangers are caused, and the installation and debugging time is long, and the equipment is installed to production. It takes 1-2 months. Container modular asphalt mixing equipment does not require foundation, as long as the ground is slightly treated to start installation; the connection between the modules is simple, only double-head single cone, bridge code and bolts; all tests can be done at the factory In progress. Equipment from installation to official production is less than 7 days.
3. The equipment is compact and covers a small area. The heat transfer oil container, the drying cylinder container and the dust removal system container are superimposed, and the drying cylinder, the heat transfer oil supply system and the dust removal system of the general equipment are respectively fixed on the foundation. In the design of the container mixing equipment, the hot material hoist of up to ten meters is divided into several sections and placed in the left part of these modules; at the same time, the trolley track for transferring the finished materials is also placed on the right part of these modules. When the equipment is installed, after the superposition of these modules, the hot material hoist and the trolley track can be directly docked, and then fixed, the design is unique and novel; the transport trolley runs through between the multiple modules, and the track has a curved portion. There is also a vertical lifting section that substantially shortens the distance between the mixing pot and the finished silo. The trolley track between the mixing pot and the finished silo in the general equipment is oblique and straight, and the horizontal distance is more than 20 meters.
4, the device transition is fast. The modular design of the container module makes the demolition and transition of the equipment as simple as the installation of the equipment, which can effectively improve the construction efficiency and effectively guarantee the construction period requirements of the construction unit.
Second, technical performance analysis
This series of container modular mixing equipment consists of feeding system, drying system, hot material lifting, screening, storage, metering system, mixing mixing system, heat transfer oil heating and asphalt supply system, powder supply system, dust removal system and finished product. The silo composition, its technical performance advantages are as follows:
1, production capacity
120-320t / h, to meet the needs of any user.
2, fuel consumption
The oil consumption per ton of finished product is between 6 and 7 kg. This equipment can burn diesel oil, and can burn heavy oil and residual oil, giving users a variety of opportunities to choose.
3, measurement accuracy
The measurement accuracy of sand and stone materials is ±0.3%, the measurement accuracy of asphalt is ±0.2%, and the oil-stone ratio error is less than ±0.5%, which can meet the requirements of any grade road.
4. Dust removal efficiency, Ringermann blackness and environmental noise
The equipment is equipped with a primary gravity dust collector and a secondary bag filter. After the secondary bag filter, the dust emission is less than 50mg/Nm3, the Ringermann blackness is less than one level, and the environmental noise is less than 80 decibels, which fully meets the national standard and environmental protection requirements of the mixing equipment.
5. Temperature control of finished materials and quality of finished materials
The temperature of the finished product can be set arbitrarily, and it can realize full-automatic and manual control with an error of not more than ±5 °C. Among them, the stone material is the second closed door weighing, which reduces the flying material and makes the weighing more accurate. The quality of the finished material can meet the requirements of any project.
6, control method
The device can realize full-automatic, semi-automatic, manual control, computer color screen display, using microcomputer monitoring and communication control mode, in line with human-machine coordination, comfortable and convenient work.
J series mixing equipment is mainly suitable for the construction of cities, municipalities, highways, etc. It meets the requirements of today's international transportation development, the equipment is compact, the floor space is small, the installation and commissioning, the transition is fast and convenient, the control system realizes manual and fully automatic operation, and is equipped with high-efficiency burner of German technology, four-layer double vibration. High-efficiency linear screen and high-efficiency mixing pot with Parker's patented technology have greatly improved the technical performance of the equipment and reached the international advanced level, becoming the new product of today's leading era.
Key words: container modular mixing equipment, structural characteristics, technical performance