All

Control electronic control state: The control hydraulic signals related to the displacement change are the oil flow of the front pump, the oil flow of the rear pump, the pilot oil and the negative flow. The oil flow of the front and rear pumps directly controls the oil pump, and the pilot oil is throttled by the electric proportional valve.

Secondary piston: In the state of electronic control, the secondary oil flow of the pilot controls the secondary piston independently. The negative flow does not participate in direct control, but the pressure parameter is collected by the negative pressure sensor and provided to the computer, which is calculated by the computer as the control electric ratio A parameter of the valve current is used to control the secondary oil flow of the pilot;

Many people don't understand the importance of the cleanliness of pump trucks. Many people mistakenly think that as long as the equipment is checked regularly and there is nothing wrong with it, it is not the case. Its cleanliness also has a crucial impact on pumping. Let me analyze for you today, how big the impact is.

Concrete pumps are relatively commonly used mechanical equipment nowadays. When purchasing concrete pumps, not only the scale of the manufacturer and product quality must be considered, but also some professional knowledge of the products must be considered.

Concrete mixer pumps are used frequently in the construction process of construction projects and play an important role in construction. From the content of concrete equipment construction operation, the level of its operation is directly related to the quality and safety of construction projects.

Concrete delivery pumps are widely used in practice. Saintyol DAWIN Machinery believes that the operation details of small concrete delivery pumps mainly include the following points based on years of production and research experience:

Saintyol DAWN 8m3/hr 76KW diesel engine wet concrete spray machine shipped to Indonesia

What are the pumping principles of the truck mounted shotcrete machine? How does the concrete delivery pump carry out the pumping of concrete? Based on long-term repeated tests and customer research, Saintyol DAWIN Machinery believes that there are many factors that affect the material absorption of the agitator pump pumping system, which are independent of each other and affect each other,

The mixer pump is a small concrete delivery pump that adopts a fully automated construction operating system and integrates feeding, mixing and high-pressure pumping. The pump is easy to operate, stable in performance and easy to move.

With the construction of mine roadways, railway and highway tunnels, water conservancy culverts, and various underground projects in the country, the internationally advanced support method of shotcrete support is widely used. Concrete shotcrete is the main equipment for this operation, but due to There are three major problems in dry spraying machines: ① large dust, ② high rebound, and ③ poor quality.

During operation, the pumping displacement of the concrete pump truck depends on constantly adjusting the pumping speed to change the size. The adjustment of the pumping displacement is also very important. Do you know if it changes? Today I will teach you how to change the pumping displacement. Common ways to measure:

Things to pay attention to when choosing a concrete pump truck construction:

The layout of the concrete pump pipe must pay attention to the following points: 1. In order to reduce the pumping resistance, try not to place a 90-degree elbow immediately at the outlet of the concrete pump. The correct pipe layout method is to place a short pipe of 1 to 2 meters at the outlet of the concrete pump, then connect a 3-meter straight pipe, and then consider the problem of connecting a 90-degree elbow to the ground. This has two purposes.

Purpose: To guide the pressure adjustment of the pumping, reversing, stirring, and washing hydraulic systems of the sky pump. Adjustment steps: Loosen all the adjustment screws of the main relief valve on the main valve block and all the relief valves on the auxiliary valve block.