Stuff-discharging and pumping method and device

Abstract

The invention discloses a slurry pumping method and a device thereof, wherein, the device comprises a driving mechanism and a vertical slurry pump, a power transmission mechanism is arranged between the driving mechanism and the slurry pump, the power transmission mechanism comprises at least a group of hydraulic ram set consisting of a horizontal hydraulic ram and a vertical hydraulic ram, wherein, a piston rod of the horizontal ram in the power transmission mechanism is connected with the driving mechanism, and a piston rod of the vertical hydraulic ram is connected with the vertical slurrypump; a pole cavity and a pole-free cavity of the horizontal hydraulic ram are respectively communicated with a pole cavity and a pole-free cavity of the vertical hydraulic ram by oil pipes, and a hydraulic oil-vent compensating device is arranged between the oil pipes connected with the pole cavities and the pole-free cavities of the horizontal hydraulic ram and the vertical hydraulic ram. The device integrates the advantages of the horizontal slurry pump and the vertical slurry pump, overcomes the defects thereof and can satisfy the requirements of high pumping pressure, large stroke and large flow rate.

Description

technical field [0001] The invention belongs to the technical field of slurry discharge transportation, and in particular relates to a slurry discharge pumping method and device. Background technique [0002] In terms of slurry pumping, traditional volumetric pumping devices are divided into horizontal and vertical. [0003] Horizontal volumetric pumping units see figure 1 Due to the limitation of the size and weight of the power end of the mechanical transmission, the horizontal pump slurry structure is usually adopted, and the driving device of the crankshaft (handle) connecting rod mechanism 5 drives the horizontal mud pump and the ore slurry through the guide ten-section 6 , The metal plunger or the rubber piston 7 that directly contacts the mud do reciprocating motion. Since the medium being pumped often has a strong abrasiveness and a large specific gravity, it is easy to settle in the pumping chamber, forming a distribution of upper light and lower turbidity, formin...

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Problems solved by technology

Defects of this device: one is that the two oil cylinders operate in a 90° relationship with each other, and the output medium has a flow dead (break) point, which fluctuates greatly; Control it below 30 times per minute, that is, the one-way stroke of each plunger should not exceed 15 times per minute, and the ideal state is less than 10 times, otherwise the electro-hydraulic reversing valve will become a vulnerable part, and the reliability of the system will be greatly reduced. The diameter of the electro-hydraulic reversing valve is limited, and the largest diameter of the finalized product on the market is DN32mm. When the hydraulic system requires large flow and high stroke times, the device faces an insurmountable hardware bottleneck

The hydraulic oil pump is also one of the restrictive factors. The displacement of hydraulic oil pumps on the market is usually up to 260ml / rev. When the system requires a large flow, multiple pumps will be connected in parallel to supply oil, and the efficiency of the system will be significantly reduced, and it cannot adapt to high frequency. reversing, otherwise the hydraulic shock generated during high-frequency reversing will cause rapid damage to the hydraulic pump

[0005] It can be seen that, limited by the conditions of hydraulic components, the traditional vertical volume pumping device is usually used under the working conditions of small flow and small pressure head. unreliable, difficult to apply

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