Continuous sand blasting tool
A technology for sand flushing and tools, applied in the field of continuous sand flushing tools, can solve problems such as pump stoppage, and achieve the effects of improving sand flushing efficiency, avoiding sand blockage, and reducing usage.
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[0016] See Figure 1-Figure 4 , the specific structure of this embodiment is a continuous sand washing tool, including an inner oil pipe 1 (1.900” oil pipe), an outer oil pipe (22-7 / 8” oil pipe), and the inner oil pipe 1 and the outer oil pipe 2 are arranged on the casing 6 Inside, the upper end of the internal oil pipe 1 is provided with a compensation type sand washing sealing tool 3, the lower end of the outer oil pipe 2 is provided with a buffer type sand washing suspension tool 4, and the lower end of the inner oil pipe 1 is provided with a seated strong jet sand washing tool 5;
[0017] The compensation type sand flushing sealing tool 3 includes an upper joint I3-1, a center pipe 3-4, a piston 3-5, a sealing sleeve 3-3, and a screw thread is used between the upper joint I3-1 and the center pipe 3-4. Connection, there is a leather cup 3-2 between the upper joint Ⅰ3-1 and the sealing sleeve 3-3, the piston 3-5 slides freely on the central tube, the upper part of the sealin...
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