32results about How to "Guaranteed disturbance" patented technology

The invention provides two static sounding type deep soil samplers. According to each static sounding type deep soil sampler, a main force bearing shaft is arranged inside a cylinder structure composed of a shell, a sampling tube and a tube shoe, the lower end of the main force bearing shaft is connected with a soil expanding cone head, a steel sheet and an electric ring are arranged between the main force bearing shaft and the shell, and the steel sheet and the elastic ring are clamped in an annular groove. According to the first static sounding type deep soil sampler, the annular groove is formed in the inner surface of the shell, an annular limiting groove is formed in the main force bearing shaft, and the main force bearing shaft is sleeved with an unlocking component composed of a thin-walled pipe and a control bar. According to the second static sounding type deep soil sampler, the annular groove is formed in the main force bearing shaft, an annular limiting groove is formed in the inner surface of the shell, and the main force bearing shaft is sleeved with a thin-walled pipe serving as an unlocking component. The two static sounding type deep soil samplers are used in combination with static sounding penetration equipment, a soil sample buried deep underground can be taken out rapidly under the condition that drilling is not needed; the static sounding type deep soil samplers have the advantages of being simple in structure, convenient and fast to use, capable of saving labor and low in cost; the disturbance of the water pressure on the soil sample can be reduced.

The invention discloses a soil remediation system and method. The soil remediation system comprises a polluted soil source conveying unit, a heating and volatilizing unit, a cleaning and sediment unit, a dehydration unit, a faeces conveying unit, a fermentation unit, a soil-fertilizer mixing unit and a remedied soil source conveying unit. According to the soil remediation system and method, the problem that remedied soil is heavily sandy and lack of nutrients are solved through a fermented faeces and treated soil mixing method; disturbance of water flow in a filter screen area is guaranteed in the recovery process of a cleaning fluid recovery module, and the problem that filter screens are likely to be blocked is solved; disturbance on bottom sediments is effectively suppressed through the cleaning fluid recovery module, so that recycled cleaning fluid does not contain soil and impurities.

The invention provides a motor and a control method thereof. The motor comprises a shell, a stator and a rotor, wherein the stator is arranged in the shell, the rotor is arranged at a radial inner side of the stator, the shell is provided with a rear end cover, a shaft end groove is formed in the rear end cover, the rotor is provided with an output shaft, a rear end of the output shaft is insertedinto the shaft end groove, the motor also comprises a play-prevention device and a play detection device, the play-prevention device is provided with an electromagnet and a permanent magnet, the electromagnet is arranged at the bottom of the shaft end groove, the permanent magnet is arranged at a rear end of the output shaft, and the play detection device is configured to detect displacement between a real-time position and an initial position of the output shaft and control the size and the direction of a current of the electromagnet according to the displacement so as to further control thesize of an acting force between the electromagnet and the permanent magnet and maintain the output shaft at the initial position. When axial display occurs in the output shaft, the current supplied to the electromagnet is controlled, the permanent magnet is pushed to drive the output shaft to move towards an opposite direction of an axial play direction, axial play is generated, and the rotationof the output shaft cannot be affected.

The invention discloses a soil repair system based on micro-biological degradation. The system comprises a pollution source soil transfer unit, a physical screening unit, a stone transfer unit, a micro-biological degradation unit, a cleaning and precipitating unit, a dehydrating unit and a repaired soil source transfer unit. With adoption of a way of combining micro-biological degradation and chemical cleaning, soil is more thoroughly repaired, and secondary pollution is effectively reduced; in a recovery process of a cleaning liquid recovery module, disturbance of a water flow in a filter screen region is ensured, and the problem that the filter screen is easy to block is solved; and the cleaning liquid recovery module effectively inhibits disturbance on the bottom precipitate, so that the recovered cleaning liquid does not contain soil impurities.

The invention provides a fixation device and a method for in-situ monitoring of a floating plant root system, which belong to the technical field of plant physiology and ecology. The fixation device comprises a box body, wherein the box body is an opaque hollow column which comprises a top panel, side walls and an opened lower end; the top panel is equipped with at least one root canal hole; and shape and size of the root canal hole are adapted to the shape and the size of a scanner root canal, and the root canal hole is used for insertion of the scanner root canal. The fixation device is used for the in-situ monitoring of the floating plant root system, is simple in structure and convenient in disassembly and assembly, can reduce sampling cost and measurement errors without interfering in normal plant growth or destroying the plant root system, and realizes the automatic, continuous and real-time monitoring of the floating plant root system.