A reverse gravel throwing device with a built-in filter for in-situ leaching uranium mining
An in-situ leaching uranium mining and filter technology, which is applied to mining fluids, earthwork drilling, wellbore/well components, etc., can solve the problems of increasing the service life of the built-in filter and not being able to throw gravel, and achieves low cost and simple processing Effect
Active Publication Date: 2020-12-15
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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Problems solved by technology
[0004] The object of the present invention is to provide a reverse gravel throwing device with a built-in filter for in-situ leaching uranium, to solve the problem that the existing in-situ leaching uranium drilling hole cannot be thrown into the built-in filter, which can prevent the built-in filter from clogging and increase Built-in filter service life
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[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] Such as figure 1 — Figure 5 As shown, the reverse gravel throwing device with a built-in filter for in-situ leaching uranium mining according to the present invention includes a reverse gravel thrower 1 and a lower protection tube 4; the reverse gravel thrower 1 is in a tubular structure, one end is a female thread, and the other end is a male thread Buckle, a check valve 2 is installed at one end of the male threaded thread, and one end of the circular cover plate 8 is connected with the reverse gravel thrower 1 male threaded thread through a hinge 6, and a torsion spring 7 is installed in the middle of the hinge 6, so that the circular cover plate 8 Capable of closing automatically. Reverse gravel thrower 1 is processed with reverse threaded button 3 near the middle part of female threaded button one end, and its male threaded but...
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The invention belongs to the technical field of in-situ leaching uranium mining and specifically relates to a reverse gravel throwing device of a built-in filter for the in-situ leaching uranium mining. The device comprises a reverse gravel thrower and a lower protective tube, wherein the reverse gravel thrower has a tubular structure, one end is a female screw thread, the other end is a male screw thread, a check valve is installed on one end of the male screw thread, a round cover plate is connected with one end of the male screw thread of the reverse gravel thrower by a hinge, a torsion spring is installed at the middle part of the hinge and thus the round cover plate can be closed automatically; a reverse screw thread is processed at the middle part of the end of the reverse gravel thrower near the female screw thread, and one end of the female screw thread of the reverse gravel thrower is connected to the built-in filter; and the lower protective tube has a tubular structure, one end is a parent screw thread, the other end has a closed structure, four water passing grooves are formed around the lower protective tube, and the female screw thread end of the lower protective tube is connected to the male screw thread end of the reverse gravel thrower. The device provided by the invention is used in cooperation with the built-in filter; reverse gravel throwing can be achieved after setting of the built-in filter in a drill hole for the in-situ leaching uranium mining; and the problem that gravel throwing cannot be achieved after setting of the built-in filter in the drill hole can be solved.
Description
technical field [0001] The invention belongs to the technical field of in-situ leaching uranium mining, and in particular relates to a reverse gravel throwing device with a built-in filter for in-situ leaching uranium mining. Background technique [0002] With the operation of in-situ leaching uranium mines, various problems will lead to a sharp drop in the amount of liquid pumped out of the borehole, making it impossible to complete the pumping and injection operations, and become a failed borehole. Clogged or broken filters are the leading cause of borehole failure. According to statistics, an average of 7% of drill holes in a mining area of a certain uranium mine in Xinjiang have failed due to filter blockage. The most effective way to solve the failed borehole is to cut and repair the failed borehole. This method is widely used in the United States. The in-situ leaching mine of Uranium Energy Company of the United States adopts the method of cutting the filter and in...
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IPC IPC(8): E21B43/04E21B43/10
CPCE21B43/04E21B43/10
Inventor 秦昊胡柏石
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY