33results about How to "Solving sampling difficulties" patented technology

The invention discloses a land surveying sampling device convenient for storage for agricultural use. The land surveying sampling device convenient for storage for agricultural use includes a supportplate and a motor; a support frame is fixedly welded on the upper end of the support plate, and the upper end of the support frame is fixedly sleeved on the outer side of a sleeve; the upper end of the sleeve is fixedly welded to the lower end of a base plate, and the upper end of the base plate is fixedly and symmetrically equipped with four universal wheels; a screw rod is inserted at the lowerend of the sleeve, and a nut is sleeved on the screw rod; and the nut is rotatably installed at the lower end opening of the sleeve through a bearing. According to the invention, a first sampling plate and a second sampling plate are arranged to be combined into a sampling cylinder, and the first sampling plate and the second sampling plate can be separated, therefore, the sample is easy to be taken out; in addition, a vent hole is arranged, so that the soil enters the inside of the first sampling plate and the second sampling plate, and the air pressure inside the first sampling plate and thesecond sampling plate can be exhausted through the vent hole, therefore, sampling difficulties due to excessive air pressure inside the cylinder are prevented.

The invention relates to an online monitoring system for construction machinery hydraulic oil. The online monitoring system includes a first sampling pipe, a first thermometer, a first valve, an electromagnetic pump, a buffer oil pool, a third thermometer, a first oil sensor, and a pressure sensor And the oil return device; the oil inlet end of the first sampling pipe is connected with the oil return pipe of the engineering vehicle, and the oil outlet is connected with the oil inlet end of the electromagnetic pump. The first sampling pipe is provided with a first thermometer and a first valve, and the first valve It is closer to the electromagnetic pump than the first thermometer. The oil outlet of the electromagnetic pump is connected to the oil inlet of the buffer oil pool. The first oil sensor and the third thermometer are arranged on the buffer oil pool. A pressure sensor is arranged between the oil inlet ends of the oil device. The online monitoring system provided by the invention solves the difficult problem of sampling in the hydraulic system of engineering machinery vehicles, and realizes that the collected oil samples can not only reflect the operation status of the equipment in real time, but also can comprehensively determine the overall status of the system.

The invention provides a skid-mounted liquid sampling device at the wellhead of a gas well. The basic components include: a fixed table and a liquid storage cylinder, a separation cylinder and a nitrogen bottle installed on the table; the liquid storage cylinder and the separation cylinder are cylinders with both ends closed structure and are installed on the fixed platform in an inclined shape, and the slanted upward end of the liquid storage cylinder is connected to the slanted downward end of the separation cylinder through a vent pipe and a return pipe. The obliquely downward end of the liquid storage cylinder is provided with a sampling port, a sampling port and a liquid level observation window. The sampling port of the liquid storage cylinder is connected to a nitrogen cylinder through a pressure-resistant pipeline, and the inner cavity of the separation cylinder is provided with a gas-liquid filter. An exhaust pipe is also arranged at the end inclined upward. The device can effectively solve the difficult problem of sampling caused by blowing out of the liquid sample when sampling the water bottle and the hidden safety problem caused by the flammable and explosive gas in the sample. In addition, the present invention also has the advantages of simple structure, easy operation, easy disassembly and portability.

The invention discloses a jet probe device for in-situ evaluation of scouring characteristics of sandy soil. A hollow stainless steel guide rod (1) is arranged at the upper part of the device; a jet probe (2) is arranged at the lower part of the device; a conical head (3) is arranged at the bottom of the jet probe (2); a jet hole (4) is formed at the bottom end of the conical head (3); a threaded connector is arranged at the top of the jet probe (2) and is connected with the lower part of the hollow stainless steel guide rod (1); scale identification lines (6) are arranged in the length directions of the whole hollow stainless steel guide rod (1) and the jet probe (2); the top of the hollow stainless steel guide rod (1) is connected with a water suction pump (8) by a rubber water pipe (7); and the whole testing device is fixed by an aluminum alloy tripod (9). The testing device has the characteristics of in-situ, convenience, quickness, economy and the like, and provides a powerful evaluation means for the scouring and erosional characteristics of the sandy soil in the fields of water conservancy, rock-soil and ocean engineering.

The invention relates to a pneumatic sampling device, which is characterized in that a rotating arm is connected onto a rack by a rotary shaft in a hinging manner; the rotating arm is driven by a swinging drive mechanism to be capable of swinging around the rotary shaft; a lifting air cylinder and a lifting guide rail are arranged on the rotating arm; a material reclaiming arm is slidably connected onto the lifting guide rail, and is connected with an end of a piston rod of the lifting air cylinder; the material reclaiming arm can slide up and down along the lifting guide rail under the driving of the lifting air cylinder; a material reclaiming air cylinder and a material reclaiming guide rail are installed on the material reclaiming arm; a material reclaiming pipe is slidably installed on the material reclaiming guide rail; the material reclaiming pipe is connected with the end of the piston rod of the material reclaiming air cylinder, and the material reclaiming pipe can slide up and down along the material reclaiming guide rail under the driving of the material reclaiming air cylinder; a joint lever is installed in the material reclaiming pipe in a penetrating manner; an upper end of the joint lever is installed on the material reclaiming arm; a lower end of the joint lever is provided with a seal valve; the seal valve is matched with a material reclaiming barrel; the seal valve is used for sealing the material reclaiming barrel. The pneumatic sampling device is simple in structure, stable in work, high in reliability, and convenient to maintain, capable of effectively solving the problem of difficulty in sampling in the automatic production.