How did the cement pump truck pump the cement up?

I wonder if you will use bulk carriers or concrete pump trucks. Let me tell you everything. These two simple statements are that pressure produces compressed air and substances are pumped out. Bulk cement truck and powder material transport vehicle are mainly composed of special chassis, powder material tank, gas pipeline system and transmission system.

1. Powder particle tank

The powder tank assembly is mainly composed of a cylinder, a feed inlet at the upper end of the tank, a fluidized bed, a discharge pipe assembly, an air inlet pipe and other accessories. The tank body is a straight tube structure with excellent manufacturing technology. Submerged arc welding tank can be formed once, and the tank can be formed once with 5mm or 6mm quality steel plate. The standard elliptical heads with a thickness of 6mm are adopted at both ends, which are firmly welded and have the characteristics of high overall strength, good rigidity, good bearing capacity and good service performance. The tank body has a double-chamber structure, and the fluidized bed in the tank has a moderate width and reasonable layout, which can effectively shorten the unloading time, improve the volume utilization rate of the tank body and effectively reduce the powder residue rate; There are two or three charging ports at the top of the tank. On the one hand, the manhole cover that opens the charging port can charge the tank, on the other hand, it is convenient for people to enter and exit when the tank needs maintenance.

2. Pipeline system

The front and rear air chambers of the bulk cement truck are respectively provided with air inlets, and the functions of simultaneous opening and independent control can be realized through the ball valve. The working principle of the system is that the working power is led out from the automobile gearbox, and the air compressor is driven by the transmission device, and the generated compressed air enters the air chamber through the control pipeline, so that the powdery materials in the tank are fluidized. When the pressure reaches 0. 196Mpa, open the discharge butterfly valve to realize discharge.

3. Hubei Heli Special Purpose Vehicle Series (no advertising, online plagiarism) modified the customer-selectable dual-power loading and unloading drive system (to realize the dual-power unloading of powdery materials and bulk cement), changed the traditional technology that the engine-driven air compressor is widely used in special purpose vehicles to generate pressure air source and unload bulk cement or powdery materials, and adopted the technical equipment of the automobile engine and motor-driven air compressor. The test shows that unloading bulk cement with this equipment can save fuel, reduce transportation cost, prolong engine service life and speed up unloading. Principle of concrete pump truck: 1) Main structure and pumping principle. Taking HBT60 concrete pump of Zhonglian Heavy Industry as an example, its structural characteristics and pumping principle are introduced. HBT60 concrete pump consists of hopper, pumping system, hydraulic system, cleaning system, electrical system, motor and walking chassis. The pumping mechanism consists of two main cylinder water tanks, a reversing device, two concrete cylinders, two concrete pistons, a hopper, a distribution valve (S-type valve), a swing arm, two swinging oil cylinders and a discharge port. The concrete piston is connected with the piston rod of the master cylinder respectively and reciprocates under the action of the hydraulic oil of the master cylinder; When one cylinder advances, the other cylinder retreats; The outlet of the concrete cylinder is communicated with the hopper, one end of the distribution valve is connected with the discharge port, and the other end can be connected with the swing arm through the spline shaft, and can swing left and right under the action of the swing oil cylinder. When pumping concrete, under the action of the master cylinder, the concrete piston advances and the concrete piston retreats. At the same time, under the action of the swinging cylinder, the distribution valve is connected with the concrete, and the concrete cylinder is connected with the hopper. In this way, when the concrete piston retreats, the concrete in the hopper is sucked into the concrete cylinder, the concrete piston advances, and the concrete in the concrete cylinder is sent to the distribution valve and pumped out. When the concrete piston returns to the end of the stroke, the reversing device in the water tank is triggered, and the main oil cylinder 1 reverses direction, and at the same time, the swinging oil cylinder reverses direction, so that the distribution valve is connected with the concrete cylinder, and the concrete cylinder is connected with the hopper. At this time, the piston moves backward. Daily circulation, so as to realize continuous pumping. When the pump rotates reversely, the concrete cylinder in the suction stroke is connected with the distribution valve, and the concrete cylinder in the push stroke is connected with the hopper, so that the concrete in the pipeline is pumped back to the hopper, and the pumping system completes the suction and discharge of concrete through the conversion of the distribution valve. Therefore, the distribution valve is a key component in the concrete pump, and its type will directly affect the performance of the concrete pump. 2) Several common vertical butterfly valves of distribution valve type (1) are equipped with butterfly plates on the channel between the hopper, the concrete cylinder and the outlet of the concrete pump, and the butterfly plates rotate under the push of the piston rod of the hydraulic cylinder, so that the working cylinder gets a channel different from the conveying pipe and the collecting hopper. The valve has the characteristics of simple structure, small volume, short concrete flow passage, small reversing resistance and convenient maintenance. Because the cross-sectional area of the concrete flow passage changes greatly, the direction of the suction flow passage changes sharply, and the pumping resistance in the distribution valve is large, so the pumping pressure of concrete is small and the service life is long. (2) Place the S-shaped valve in the hopper, one end of the S-shaped valve is connected with the outlet of the concrete pump, and the other end swings back and forth under the action of the piston rods of two hydraulic cylinders, which are respectively connected with the two concrete cylinders. When the S-shaped valve is connected with the concrete pump cylinder, the pump cylinder sucks concrete; When the S-shaped valve is connected with the concrete pump cylinder, the cylinder sucks concrete under pressure to realize the process of material suction and discharge. The V-valve itself is a part of the conveying pipe, and the shape of the overflow section has not changed, providing a wear-resistant plate with a wear-resistant ring. Easy maintenance and replacement of wearing parts. Due to the high pressure of pumping concrete, it has the characteristics of long conveying distance and high conveying height. (3)C-shaped valve (the C-shaped valve is placed in the hopper, one end of which is connected with the outlet of the concrete pump, and the other end swings back and forth under the action of the piston rods of two hydraulic cylinders, which are respectively connected with two concrete cylinders 7, so as to realize the processes of material suction and material discharge. The application of this valve can have the following characteristics: it is easy to remove the residual concrete, and when the whole conveying system is cleaned after pumping concrete, the conveying pipe can be cleaned by using the pump to suck back the sponge ball without opening the conveying pipe; V-valve is easy to replace; The contact surface between the wear plate and the shape valve can be automatically compensated by the automatic sealing ring; V-valve is made of thick manganese steel, which is wear-resistant; Without a pendulum shaft with a similar valve, concrete can flow directly into the concrete cylinder, with high suction efficiency; V-valve bearing is located outside the concrete area, which can avoid frequent maintenance; Strong adaptability to aggregate, etc. 4) Inclined gate valve This valve is set at the back of the material, which can not only reduce the height of the hopper, but also make the pump body compact, and does not prevent the mixer from discharging to the hopper. Each of the two hydraulic cylinders has a gate valve, which reciprocates under the action of the piston cylinder of the hydraulic cylinder to complete the action of opening or closing the concrete inlet and outlet. This valve has strong adaptability to concrete, but its structure is complex. When replacing this valve, it is necessary to remove the hopper, which is inconvenient for maintenance. The discharge pipe is used, so the pressure loss is large, so the pressure of pumping concrete is small. The grease used to lubricate the gate valve in operation is easy to enter the concrete, so it is a consumable and needs to be replenished constantly.