How to handle it about concrete pump blocked pump?

In situ concrete construction in most afraid of is the emergence of concrete pumps pump blocking phenomenon, which not only affect the construction schedule, but also a waste of engineering materials. Now Hunan people and heavy engineering and technical personnel to tell you how to deal with concrete pump blocked pump!
Usually concrete delivery pumping system operation abruptly interrupted, and there is abnormal sound, concrete pump has a strong vibration, but without a corresponding vibration in the pipeline. This is likely to be clogged with a valve at the outlet. Remedy: Pour water into the hopper mud, repeated forward and reverse start the pump, so that blockage open mouth open. If you still can not rule out the blockage, it can only be artificially excluded, remove the tubing, remove debris at the discharge port with a valve.
In fact, the mechanical equipment and people, but also require routine maintenance and repair, or else no matter how good, and then stick the concrete pump problems will arise, so the completion of each construction should be promptly flushed with high pressure water pump and pipeline, Remove residual, including concrete, so that we can maximize the use of, for their own cost savings to bring more revenue!

What configuration required equipment concrete mixer

Batching plant mixer is not the component parts of each component carry out their duties, but also has very close links with each other, because it determines whether the normal operation of the mixer, so the mixer, it It is very important configuration. So, what equipping concrete mixer needs?
Large extent can be summarized in three aspects: transmission, gear system, concrete batching plant accessories.
Batching plant mixer transmission system, comprising: a rotating belt, gear, and hydraulic rotation and so on. Belt drive is the most common transmission system, a plurality of belt belt drive system requirement is a job of work, and each belt is a unified model, the length of the little difference, so as to maintain off a belt are hard, even by force, stirring transmission effect will be much better.
Mixer gear reducer is a key factor affecting the normal operation of the mixer, gear oil spill will have an impact on the effect of stirring mixer mixing quality.
concrete batching plant accessories (mixer accessories), good quality mixer accessories, directly determines the mixing efficiency mixer, since the forging of different materials, quality mixer accessories will be different, resulting in a stirrer hardness and wear resistance will have a lot of differences.
In summary mixer system is composed of three: transmission, gear system, concrete batching plant accessories.

Spring cone crusher cone unit assembly requirements

Spring cone crusher which spherical bearings bolted to the body, the upper and lower bushing by means of an interference fit, keys and bolts positioned at the top of its spherical bearing spindle bowl tile sphere, while the lower bushing is set in skew eccentric the outer cylinder, the gap between the two is about 1mm, eccentric eccentrically rotating movement, by means of contact with the body and the eccentric bushing suite to support moving cone.

In the empty payload, the liner into contact with the bowl bearing frame to prevent overturning and damping rotation, lubricants directly through the spindle lubrication bowl tiles and the upper and lower bushings, T-ring binder in moving cone below the groove inside, and the top of the counterweight u sealing rings labyrinth seal to prevent oil spills, and to protect the surface from dust gears and bearings against, moving cone-shaped baffle plate beneath the skirt, to prevent splashing of oil leaking from the labyrinth seal ring

When refueling the most suitable concrete mixer

Due to the large concrete mixer truck fuel consumption, often need to refuel. Often have concrete mixer driver complained noon plus a full tank of fuel, not to call it a day in the evening soon no oil. The same car, the same load, which is why I use the mixer so fast? I said that according to his analysis of the situation, summed up the reasons:
One can avoid the midday sun by the drug, the high temperature of the invasion, partly because gasoline is billing volume rather than weight, thermal expansion and contraction. Gasoline volume at night or early morning is relatively small, the same volume of gasoline may have better quality, it is not easy blistering and volatile, so at night or early morning refueling. Although the vast majority have a underground oil storage depots, petrol is not directly exposed to higher temperatures, the temperature is relatively stable. But in theory, when the hot weather, gasoline or will be expanded slightly when passing through tankers. Especially in the hot summer weather, the outdoor temperature is 37 degrees Celsius at noon, potentially increasing the coefficient of expansion of the gasoline, the owner is also the most suitable for refueling.
So you owners who pay attention, to try to choose at night or early morning when more cost-effective and energy-saving fuel. 

Should pay attention to what matters to clean concrete mixer

With the development in recent years, new rural construction, urban renewal and other aspects of development, roads, bridges, housing and other construction is booming, concrete as the most important construction materials, concrete mixers various construction machinery ideal mixing equipment. With respect to the bridge, crane, the mixer is relatively maintenance is relatively easy, but can not be underestimated, perhaps a small detail will directly affect concrete mixers, such as: concrete mixer cleaning.
Concrete mixer should be cleaned to note the following:
First, regular maintenance procedures specified projects, maintenance operations, such as cleaning, lubricating, refueling
Second, the concrete mixer before starting first check the controller is good, and stones into the water after the suspension was stirred cylinder 10 to 15 minutes cleaning, then cleared the water and stone. The operator shall enter such as stirring barrel cleaning, in addition to cut off the power and remove the fuse outside, and shall lock switch box.
Third, prohibit the use of a sledgehammer beat way to clear accumulated in the concrete mixer concrete barrel, it can only be removed with a chisel.
Fourth, in the cold season, after the work is completed and the application of water to wash the mixer drum pumps, water tanks, water discharge pipes inside the net, so water pumps, water tanks, water pipes freezing.

What is concrete mixer

The self falling mixer has a long history, as early as the beginning of twentieth Century, the drum type concrete mixer driven by the steam engine began to appear. After the 1950s, reversing the type material and tilt pulls out feeding type double tapered mixer and crack drum mixer etc. in succession and development. On the inner wall of the self - falling concrete mixer, the mixing blades are radially arranged on the inner wall. After work, the mixing drum around the horizontal axis rotary and join the mixing tube material, the leaves are up to a certain height, by the weight drop, so the cycle of movement to stir effect. The structure of the self - falling concrete mixer is simple, which is generally based on the mixed concrete.
Forced mixer, after the beginning of 1950s, the rapid development and promotion. The first is the vertical disc type forced concrete mixer. This mixer is divided into two types, one is the vortex and the one is the one. After the seventies of the 19th century, with the application of lightweight aggregate, circular groove horizontal shaft type forced mixer. It is divided into two kinds of single horizontal shaft type and the double horizontal shaft type, both from the fall and forced two kinds of mixing characteristics. The linear velocity of the blades is small, the wear resistance is good and the energy consumption is little. The forced concrete mixer is arranged on the rotating shaft of the rotating shaft of the mixing barrel, and the mixing blade is arranged on the rotating shaft, and the material is added into the mixing barrel. The stirring mode is much stronger than that of the self - stirring mode, which is mainly suitable for mixing dry hard concrete.
The continuous concrete mixer is equipped with a screw type mixing blade, and each material is fed into a mixer, and the concrete is continuously discharged out of the discharge end. The mixing time is short, the productivity is high, and the development of this kind of mixer is notable.
With the development of concrete materials and construction technology, many new types of concrete mixer, such as steam heating type mixer, supercritical speed mixer, sound mixer, the mixing vane of the rolling disc mixer and the two stirring of concrete mixer, etc..

Buy concrete pump method

Starting from the technical parameters Typically, a concrete pump has the following main technical parameters: transport emissions, the outlet pressure, electrical power and distribution valves form. In accordance with the new national standards, which several key parameters from the concrete model of the pump can be learned. The following concrete pump "HBT60-16-110S" concrete pump as an example of their representatives significance
HB-- concrete pump pinyin abbreviation
T-- towed
S-- dispensing valve for the S-shaped swing pipe valve
60-- maximum transport capacity, m3 / h
16 ---- concrete conveying the maximum pressure at the pump outlet, MPa
110-- motor power, kW
Marked according to the outlet pressure rating, is divided into a low pressure pump (≤5MPa), the pump (6-10MPs) and high-pressure pump (> 10MPa); according to the maximum throughput per hour, there are 20-100m3 range, and large Most concrete pump can achieve two tranches of variable displacement or stepless variable. Users should be based on the actual needs of the project, according to the height of transmission distance and choose the outlet pressure; according to the ability to feed stirring, the choice of the output side volume; according to pumping concrete aggregate situation, choose the form of the dispensing valve. S-shaped swing pipe valve pressure loss during pumping, smooth concrete flow channel, but by limiting the diameter of a higher aggregate requirements, suitable for medium and high-pressure pump, suitable for high-rise buildings and concrete quality long-distance, high-lift transport; gate valve because of low demand for aggregate is 'eat whole grains' has said that the medium-pressure pumps used more often, pumping height of 100 meters, 300 meters level.
Starting from the motor power
A concrete pump motor power is to determine the amount of outlet pressure and delivery side a prerequisite under motor power in certain circumstances, increase the amount of pressure will make the delivery reduced; on the contrary, reducing the outlet pressure will make the delivery quantity increase. In order to ensure concrete pumps both have a larger throughput, but also a certain outlet pressure and the matching of economic power in the concrete pump's design, mostly using a constant power piston pump; that is constant power value Once selected, when the outlet pressure increases, the pump displacement volume is reduced automatically reach and power to design corresponding value; if necessary to achieve the outlet pressure is high, but also want the purpose of transmission capacity. The only way is to increase the motor power. Therefore, in the new national standards, citing the ability to index concept concrete pump (in MPa · m3 / h as the unit of measure); that is the actual pump delivery pressure and the amount of the actual export of concrete per hour, good product, the value, the more large, the greater its ability index, the greater the electrical power will, thus achieving large displacement, high lift purposes. I am in the design, functional design also uses a high voltage switch to meet the different construction requirements, economic status, but also have a greater transport capacity, or in the same motor power, resulting in a higher outlet pressure .

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