Sampling valve linear driving device for deep sea
A linear drive, sampling valve technology, applied in valve device, valve operation/release device, valve details, etc., can solve the problems of small output force and displacement of electromagnet, difficult to generate thrust drive requirements, etc., to achieve large thrust and volume. Small, easy-to-use effects
Active Publication Date: 2013-06-19
ZHEJIANG UNIV
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Problems solved by technology
The electromagnet is also a widely used linear actuator. At present, there are electromagnets that have been sealed and can be directly used in underwater and deep sea, but the output force and displacement of the electromagnet are relatively small, especially in the limited size and weight. It is difficult to generate enough thrust to meet the driving requirements of the sampling valve
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[0014] Further illustrate the present invention below in conjunction with accompanying drawing.
[0015] Such as figure 1 As shown, the deep-sea sampling valve linear drive device of the present invention includes a rear end cover 1, a first O-ring seal 2, a cavity 4, a motor 6, a first ball 7, a ferrule 8, a front end cover 10, The second ball 11 , the second O-ring 12 , the driving screw 13 and the watertight cable joint 17 . Among them, the rear end cover 1 and the front end cover 10 are fixed on both ends of the cavity 4 by screws 3 and 9 respectively, and the first O-ring 2 is placed between the rear end cover 1 and the cavity 4 to act as a static seal. ; Similarly, the second O-ring 12 is placed between the front end cover 10 and the cavity 4 to act as a static seal. The watertight cable joint 17 is threadedly connected with the rear end cover 1 . The motor 6 is placed in the cavity 4, and the motor 6 is connected to the watertight cable joint 17 through a wire. The ...
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The invention discloses a sampling valve linear driving device for deep sea, which comprises a cavity, a back end cover, a front end cover, a motor, a ring, balls and a transmission screw rod. In the invention, the rotary movement of a motor shaft is converted into linear movement by adopting threaded transmission so as to meet the requirements of starting the linear driving valve. In addition, in the invention, the structure mode that balls are embedded into clamping slots is adopted, so that the motor body can not bear axial direction, and simultaneously, the balls can ensure that the motorcan move forth and back under the smaller resistance. The sampling valve linear driving device has the advantages that the size is small, the thrust is large, the power consumption is less, the use is convenient, the reuse for many times is realized, and the like, and is suitable to be applied in the deep sea. A sampling valve matched with the sampling valve linear driving device is opened by linear driving, and can be automatically closed after external driving force is cancelled.
Description
technical field [0001] The invention relates to a linear drive device for a sampling valve, in particular to a linear drive device for a deep sea sampling valve. Background technique [0002] For deep-sea hydrothermal samplers, the driving mechanism of the sampling valve is required to be as simple as possible, small in size and light in weight. Due to the relatively large sealing force of the sampling valve, the driving mechanism is required to provide a relatively large thrust, and due to the particularity of the deep sea environment, there are few linear drives directly used in deep sea. At present, the most commonly used is the hydraulic cylinder drive mode, which has output It has the advantages of large force and long stroke, but the hydraulic cylinder cannot work independently, and must rely on underwater hydraulic sources and control valves to form a complete hydraulic system. There are also micro-hydraulic pumps using shape memory alloys, which can form a simple an...
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IPC IPC(8): F16K31/04F16K31/50
Inventor 杨灿军孙辉吴世军黄铎佳
Owner ZHEJIANG UNIV