The rope churn drilling tools that a kind of adjustable water is pressed
Technical field
The present invention relates to a kind of drilling tool, relate in particular to the rope churn drilling tools that a kind of adjustable water is pressed.
Background technology
Along with the geological prospecting construction depth is constantly deepened; the drilling process of bad ground is more and more higher; construction for hard slipping formation is problem in the urgent need to address; therefore; rope percussion drilling technique more and more is widely used; this technique is by wire line coring drilling technology and the construction technology that the hydraulical impact drilling technology combines, and by impact rotating, creeps into principle, by firm hard formation smash into particle or Powdered after carry out again coring.Existing rope churn drilling tools as shown in Figure 1, when salvaging inner tube assembly, dragging for the lance seat moves to left end, when mentioning while dragging for the lance seat to extreme position, the left side of hammer stem top connection does not break away from yet drags for lance seat right side, and in the middle of making, waterway channel is in closed condition always, and because the gap between hangoff receptacle and drilling rod internal diameter is less, like this, when salvaging, the phenomenon of water blockoff, suck-back easily appears.
Summary of the invention
The object of the invention is to for the problems referred to above, the rope churn drilling tools that provides a kind of adjustable water to press, to solve original rope churn drilling tools when salvaging, be prone to the problem of water blockoff, suck-back phenomenon.
The objective of the invention is to be achieved through the following technical solutions:
The rope churn drilling tools that a kind of adjustable water is pressed, comprise outer pipe assembly and inner tube assembly, described inner tube assembly comprises inner tube assembly is hung on to the location hangoff receptacle in outer pipe assembly, be provided with position limiting slide block on the hangoff receptacle of described location, and slidably be provided with in the hangoff receptacle of location and drag for the lance seat, a described end that drags for the lance seat is connected with and drags for spearhead, slide and be provided with the hammer stem top connection in its other end, described hammer stem top connection and drag on the lance seat and be provided with sealing ring, have water hole in described hammer stem top connection, the described external surface that drags for the lance seat is provided with three positioning step anchor rings, described three positioning step anchor ring intervals are arranged, and the positioning step anchor ring coordinates location with position limiting slide block.
Further, the external diameter of described three positioning step anchor rings is connected with an end to the other end that drags for the lance seat that drags for spearhead and reduces successively by dragging for the lance seat.
Further, described sealing ring is axle YX RunddichtringO.
Further, be provided with the spring of embracing for location on described position limiting slide block.
Beneficial effect of the present invention is, the rope churn drilling tools that described a kind of adjustable water is pressed by offering water hole in the hammer stem top connection, make and mentioning while dragging for the lance seat to extreme position, the right side of dragging for the lance seat is exposed in the water hole of hammer stem top connection, make whole water route unobstructed, thereby avoid occurring the phenomenon of water blockoff, suck-back when salvaging, in addition, by three positioning step anchor rings are set, make when throwing in inner tube assembly, water route is closed, and has guaranteed that impactor can work, simple in structure, be easy to realize.
The accompanying drawing explanation
The structural representation that Fig. 1 is traditional rope churn drilling tools.
The structural representation of the rope churn drilling tools that Fig. 2 is a kind of adjustable water pressure of the present invention.
In figure:
1, outer pipe assembly; 2, location hangoff receptacle; 3, the first positioning step anchor ring; 4, the second positioning step anchor ring; 5, the 3rd positioning step anchor ring; 6, drag for spearhead; 7, drag for the lance seat; 8, position limiting slide block; 9, hammer stem top connection; 10, water hole; 11, limbers; 12, sealing ring; 13, embrace spring.
The specific embodiment
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing and by the specific embodiment.
Please refer to shown in Fig. 2 the structural representation of the rope churn drilling tools that Fig. 2 is a kind of adjustable water pressure of the present invention, in the present embodiment, the rope churn drilling tools that a kind of adjustable water is pressed, comprise outer pipe assembly 1 and inner tube assembly, described inner tube assembly comprises inner tube assembly is hung on to the location hangoff receptacle 2 in outer pipe assembly 1, be provided with position limiting slide block 8 on described location hangoff receptacle 2, and slidably be provided with and drag for lance seat 7 in the hangoff receptacle 2 of location, a described end that drags for lance seat 7 is connected with and drags for spearhead 6, slide and be provided with hammer stem top connection 9 in its other end, described hammer stem top connection 9 and drag on lance seat 7 and be provided with sealing ring 12, described sealing ring 12 is axle YX RunddichtringO, have water hole in described hammer stem top connection 9, the described external surface that drags for lance seat 7 is provided with the first positioning step anchor ring 3, the second positioning step anchor ring 4 and the 3rd positioning step anchor ring 5, described the first positioning step anchor ring 3, the second positioning step anchor ring 4, the 3rd positioning step anchor ring 5 intervals are arranged, and the first positioning step anchor ring 3, the second positioning step anchor ring 4, the 3rd positioning step anchor ring 5 all coordinates location with position limiting slide block 8, be provided with armful spring 13 for location on described position limiting slide block 8, the external diameter of described the first positioning step anchor ring 3 is less than the external diameter of the second positioning step anchor ring 4, the external diameter of described the second positioning step anchor ring 4 is less than the external diameter of the 3rd positioning step anchor ring 5.
When salvaging, under the effect of gravity, position limiting slide block 8 is in the position of the first positioning step anchor ring 3 that drags for lance seat 7, now, the right side of dragging for lance seat 7 is exposed in the water hole 10 of hammer stem top connection 9, makes whole water route unobstructed, thereby avoids occurring the phenomenon of water blockoff, suck-back when salvaging; When throwing in inner tube assembly, touch and drag for lance seat 7 by little power, drag for lance seat 7 and be moved to the left a segment distance, arrive the second positioning step anchor ring 4, because the external diameter of the first positioning step anchor ring 3 is less than the external diameter of the second positioning step anchor ring 4, have the process that an obvious power increases while firmly touching, can grasp like this and whether shift position onto, now, the water hole 10 of hammer stem top connection 9 is in the limbers 11 of dragging for lance seat 7 and the position between sealing ring 12, this just can guarantee can normally start impactor work when starting slush pump; At the bottom of inner tube assembly arrives hole, during position, turn on pump send flushing liquor, and drag for lance seat 7 and can further be moved to the left the 3rd positioning step anchor ring 5, i.e. position as shown in Figure 2, at this moment impactor starts normal operation.
Above embodiment has just set forth basic principle of the present invention and characteristic; the present invention is not limited by above-described embodiment; without departing from the spirit and scope of the present invention, the present invention also has various variations and change, and these variations and change all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.