CN112554924B - Long-range spray pipe filled with resin anchoring agent - Google Patents
Long-range spray pipe filled with resin anchoring agent Download PDFInfo
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- CN112554924B CN112554924B CN202011385005.2A CN202011385005A CN112554924B CN 112554924 B CN112554924 B CN 112554924B CN 202011385005 A CN202011385005 A CN 202011385005A CN 112554924 B CN112554924 B CN 112554924B
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- spray pipe
- telescopic
- telescopic spray
- pipe
- hole
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/025—Grouting with organic components, e.g. resin
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
Abstract
The application belongs to the technical field of anchor bolt support, and particularly relates to a long-range spray pipe filled with a resin anchoring agent, which solves the problem that the depth of an inlet of the existing high-pressure air spray pipe is uncontrollable; the range is not far enough; high pressure air flows into the wall of a borehole to disturb the hole. The application comprises a telescopic spray pipe and a bending guide pipe; the telescopic spray pipe can be telescopic back and forth; the telescopic spray pipe is connected with the bending guide pipe through the annular surface sealing device; the depth of the front end of the telescopic spray pipe inserted into the drill hole is adjustable; the pipe wall at the front end of the telescopic spray pipe is provided with an exhaust hole; the inner wall of the telescopic spray pipe is provided with a spiral guide groove with a spiral curve with a preset angle alpha with the axis of the telescopic spray pipe, and the spiral guide groove is used for improving the stability and the range of the injection direction of the resin anchoring agent. The application has longer range and better stability; the injection success rate and the injection success rate are improved; the depth of inserting the telescopic jet pipe into the drilled hole is suitable for high-speed injection occasions or single-hole injection occasions of a plurality of resin anchoring agents; high-pressure air flow is prevented from entering the wall of the disturbance hole of the drilling hole.
Description
Technical Field
The application belongs to the technical field of anchor bolt support, and particularly relates to a long-range spray pipe filled with a resin anchoring agent.
Background
In recent years, with the development of the full-automatic anchor drilling technology, some enterprises at home and abroad develop a technical scheme of injecting resin anchoring agent by high-pressure air, so that various defects of manually installing the resin anchoring agent are eliminated in principle, but the existing high-pressure spray pipe does not consider different differences of drilling holes on various coal seam rock strata, and the research on the matching relation between lithology and the drilling hole diameter, the spray pipe diameter and the spray pipe insertion depth is not deep, and the following defects exist: 1. the depth of the resin anchoring agent inlet is uncontrollable, and the requirement of jetting a plurality of resin anchoring agents through a single hole cannot be reliably met; 2. the resin anchoring agent is shaped like semi-fluid of ham sausage, so that the range is not far enough; 3. the novel problem caused by the fact that high-pressure air flow enters the drilling hole is not considered, the hole wall is disturbed, when the drilling hole is dry, the high-pressure air flow disturbs the hole wall, so that sundries such as dust and fragments fall off a large amount to block the spray pipe, and when the drilling hole is wet, the high-pressure air flow reversely impacts sundries such as water drops and coal slurry on the hole wall into the spray pipe, so that the spray pipe is blocked.
Disclosure of Invention
The application aims to solve the problem that the depth of an inlet of the existing high-pressure air spray pipe is uncontrollable; the range is not far enough; the high pressure air flow enters the hole to disturb the hole wall, and a long-range spray pipe filled with resin anchoring agent is provided.
The application is realized by adopting the following technical scheme: a resin anchor-filled long-range nozzle for filling a coal seam formation borehole with a resin anchor, comprising a telescoping nozzle and a curved conduit; the telescopic spray pipe is connected with the bending guide pipe; the method is characterized in that: the telescopic spray pipe can be telescopic back and forth;
the telescopic spray pipe is connected with the bent guide pipe through an annular surface sealing device;
the depth of the front end of the telescopic spray pipe inserted into the drill hole is adjustable; the pipe wall at the front end of the telescopic spray pipe is provided with an exhaust hole;
the inner wall of the telescopic spray pipe is provided with a spiral guide groove with a spiral curve with a preset angle alpha with the axis of the telescopic spray pipe, and the spiral guide groove is used for improving the stability and the range of the resin anchoring agent in the spray direction.
Further, the included angle alpha between the spiral guide groove and the axis of the telescopic spray pipe is。
Further, the spiral guide grooves are arranged at equal intervals.
Further, the cross section of the spiral guide groove is convex to form a male groove, the cross section of the spiral guide groove is concave to form a female groove, and the width b of the female groove is larger than or equal to the width a of the male groove.
Further, the annular surface sealing device comprises a transition joint, a flat pad, an inclined surface sealing ring, a hose clamping taper ring and an outer joint;
the outer ring surface of the inclined surface sealing ring is conical;
the hose clamping conical ring is of a tubular integrated structure and comprises a cylindrical section at the front end and a conical section at the tail end, the outer ring surface of the cylindrical section is cylindrical, the outer ring surface of the conical section is conical, the big head end of the conical section is close to the cylindrical section, the small head end of the conical section is far away from the cylindrical section, and the outer diameter of the cylindrical section is larger than that of the big head end of the conical section; the hose clamping conical ring wall body is provided with a through groove penetrating the length of the hose clamping conical ring wall body, the wall body of the conical section is provided with a plurality of grooves arranged along the length direction of the hose clamping conical ring wall body, the grooves are arranged at intervals along the circumferential direction of the conical section, the inner wall of the conical section is sequentially provided with a plurality of protruding triangular teeth along the axial direction of the conical section, and the teeth are arranged along the circumferential direction of the conical section;
the front end of the bending conduit penetrates through the outer joint and extends out of the front end of the outer joint, a hose clamping taper ring, a flat pad and an inclined surface sealing ring are sequentially sleeved on the part of the bending conduit extending out of the outer joint from back to front, the front end of the outer joint is in threaded connection with the tail end of the transition joint, and the front end of the transition joint is in threaded connection with the tail end of the telescopic spray pipe.
Furthermore, the spray pipe also comprises a limiting cone, wherein the outer ring surface of the limiting cone is conical, a threaded hole coaxial with the limiting cone is formed in the limiting cone, one end of the limiting cone is a small head end, and the other end of the limiting cone is a big head end;
the telescopic spray pipe is provided with external threads, and the external threads are positioned between the exhaust hole and the front end of the telescopic spray pipe;
external screw thread and the screw hole threaded connection of spacing awl of flexible spray tube to spacing awl, the length of external screw thread is greater than the length of screw hole, and the tip of spacing awl is located before, and the big end is located the back.
Further, the exhaust hole is equipped with the multirow, and the equidistant interval setting of circumference along flexible spray tube of multirow exhaust hole is equipped with a plurality of exhaust holes along the length direction of flexible spray tube of every row exhaust hole, and the quantity of every row exhaust hole is unanimous.
Further, the number of the exhaust holes of the plurality of rows is even, the number of the exhaust holes of the odd rows is different from the number of the exhaust holes of the even rows by 1, and the exhaust holes of the odd rows are arranged in a crossing manner with the exhaust holes of the even rows.
Furthermore, the front end of the telescopic spray pipe is provided with a bevel groove.
Furthermore, the spray pipe also comprises a fixed guide pipe, the fixed guide pipe is sleeved on the telescopic spray pipe, and the telescopic spray pipe stretches back and forth in the fixed guide pipe.
Compared with the prior art, the application has the beneficial effects that:
1. according to the application, the inner wall of the telescopic spray pipe is provided with the plurality of spiral guide grooves, so that the range of the resin anchoring agent is longer under the same spray pressure, the stability is better, and the spray success rate are improved; in addition, the method is also suitable for high-speed injection occasions or single-hole injection occasions of multiple resin anchoring agents, and has wide application range;
2. according to the application, the depth of the front end of the telescopic spray pipe inserted into the drilled hole is controlled by adjusting the position of the limit cone in threaded connection with the external thread of the telescopic spray pipe, so that the device is suitable for the requirements of single-hole injection of a plurality of resin anchoring agents, is convenient for drilling of different mediums, has a wide application range and improves the injection efficiency;
3. the exhaust hole provided by the application can timely release the dynamic high-pressure air for completing the task of accelerating the resin anchoring agent before entering the drill hole, so that on one hand, the phenomenon that the high-pressure air flow follows the resin anchoring agent to enter the drill hole, and impurities such as broken stone coal dust slurry and the like fall off in a large amount due to impact on the hole wall to block or adsorb the impurities in the inner hole of the spray pipe is avoided, on the other hand, the cleaning frequency of the spray pipe is effectively reduced, and the spraying success rate is improved;
4. the telescopic spray pipe is connected with the bent guide pipe through the annular surface sealing device, so that the sealing effect is better, and reliable sealing is realized; in addition, the inner diameter of the telescopic spray pipe is larger than that of the transition joint, and the inner hole of the transition joint is larger than that of the bendable guide pipe, so that the pipe diameter in the flight path of the resin anchoring agent is gradually increased, the flight restriction and the interference are reduced, and the acceleration of the resin anchoring agent is facilitated;
5. the front end of the telescopic spray pipe is provided with the bevel groove, so that the telescopic spray pipe can adapt to larger hole alignment eccentric quantity on one hand; on the other hand, find Kong Gengkuai, the hole alignment success rate is higher.
Drawings
FIG. 1 is a schematic view of the structure of the present application
FIG. 2 is an explosion effect diagram of the present application;
FIG. 3 is a schematic view of the telescopic nozzle of the present application;
FIG. 4 is a schematic illustration of the connection of a telescoping lance to a flexible conduit according to the present application;
FIG. 5 is a schematic view of the hose clamp cone ring of the present application;
FIG. 6 is a schematic view of various forms of a spiral guide slot of the present application;
FIG. 7 is a schematic diagram of a mating application of the present application;
in the figure: 1-telescopic spray pipe, 2-fixed guide pipe, 3-transitional joint, 4-flat gasket, 5-inclined sealing ring, 6-hose clamping conical ring, 6.1-cylindrical section, 6.2-conical section, 6.3-through groove, 6.4-groove, 6.5-tooth, 7-external joint, 8-bendable guide pipe, 9-spiral guide groove, 9.1-male groove, 9.2-female groove, 10-inclined groove, 11-limit cone and 12-exhaust hole
20-dustproof ring
30-resin anchoring agent.
Detailed Description
Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which is to be read in light of the specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the application to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the application, are not intended to be critical to the essential characteristics of the application, but are intended to fall within the spirit and scope of the application. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the application, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the application may be practiced.
Referring to fig. 1 to 6, the present application provides a technical solution: a long-range jet pipe filled with resin anchoring agent, which is used for filling the resin anchoring agent into a coal bed rock stratum borehole and comprises a telescopic jet pipe 1 and a bending guide pipe 8; the telescopic spray pipe 1 is connected with a bending conduit 8; the method is characterized in that: the telescopic spray pipe 1 can be telescopic back and forth;
the telescopic spray pipe 1 is connected with the bending guide pipe 8 through an annular surface sealing device;
the depth of the front end of the telescopic spray pipe 1 inserted into the drill hole is adjustable; the pipe wall at the front end of the telescopic spray pipe 1 is provided with an exhaust hole 12;
the inner wall of the telescopic spray pipe 1 is provided with a spiral guide groove 9 with a spiral curve with a preset angle alpha relative to the axis of the telescopic spray pipe, the spiral guide groove is used for improving the stability and the range of the resin anchoring agent 30 in the spraying direction, the arrangement of the spiral guide groove 9 converts the translational linear motion of the resin anchoring agent 30 in the spray pipe into the rotational linear motion, when an object rotates at a high speed, the angular momentum is large, the rotating shaft always stably points to one direction, and the guiding effect is similar to that of a gyroscope, and in this state, the rotational flying resin anchoring agent 30 has better directional stability and longer range.
The included angle alpha between the spiral guide groove 9 and the axis of the telescopic spray pipe 1 is。
The spiral guide grooves 9 are arranged at equal intervals, and are applied to high-speed injection occasions or occasions where a plurality of anchoring agents are injected through one drilling hole.
The cross section of the spiral guide groove 9 is convex and is provided with a male groove 9.1, the cross section of the spiral guide groove is concave and is provided with a female groove 9.2, and the width b of the female groove is equal to or larger than the width a of the male groove.
Fig. 6 shows several spiral schemes for easy processing and measurement, wherein the first row shows the number of spiral guide grooves 9 in a variable manner, and 3, 4, 6 and 8 spiral guide grooves 9 are respectively formed from left to right; the second row in the figure shows a different form of spiral guide slot 9, rectangular, trapezoidal, multi-arcuate, polygonal arcuate, respectively, from left to right.
The annular surface sealing device comprises a transition joint 3, a flat gasket 4, an inclined surface sealing ring 5, a hose clamping conical ring 6 and an outer joint 7;
the outer ring surface of the inclined surface sealing ring 5 is conical;
as shown in fig. 5, the hose clamping cone ring 6 is of a tubular integral structure, the hose clamping cone ring 6 comprises a cylindrical section 6.1 at the front end and a conical section 6.2 at the tail end, the outer annular surface of the cylindrical section 6.1 is cylindrical, the outer annular surface of the conical section 6.2 is conical, the big head end of the conical section 6.2 is close to the cylindrical section 6.1, the small head end is far away from the cylindrical section 6.1, and the outer diameter of the cylindrical section 6.1 is larger than the outer diameter of the big head end of the conical section 6.2; the wall body of the hose clamping cone ring 6 is provided with a through groove 6.3 penetrating the length of the hose clamping cone ring, the wall body of the cone section 6.2 is provided with a plurality of grooves 6.4 arranged along the length direction of the hose clamping cone ring, the grooves 6.4 are arranged along the circumferential direction of the cone section 6.2 at intervals, the inner wall of the cone section 6.2 is sequentially provided with a plurality of protruding triangular teeth 6.5 along the axial direction of the cone section, the teeth 6.5 are arranged along the circumferential direction of the cone section 6.2, the through groove 6.3 and the grooves 6.4 are arranged so that enough shrinkage allowance can be provided when the outer annular surface of the hose clamping cone ring 6 is extruded, and the teeth 6.5 are arranged so that the teeth 6.5 bite the outer annular surface of the bending guide pipe 8 when the outer annular surface of the hose clamping cone ring 6 is extruded, so that the sealing effect is better.
The front end of the bending conduit 8 passes through the outer joint 7 and extends out of the front end of the outer joint 7, the part of the bending conduit 8 extending out of the outer joint 7 is sequentially sleeved with the hose clamping taper ring 6, the flat gasket 4 and the inclined surface sealing ring 5 from back to front, the front end of the outer joint 7 is in threaded connection with the tail end of the transition joint 3, and the front end of the transition joint 3 is in threaded connection with the tail end of the telescopic spray pipe 1.
Because the telescopic spray pipe 1 and the fixed conduit 2 are made of stainless steel materials, the flexible conduit 8 is made of flame-retardant plastic pipes, the concentric connection and end face sealing of the telescopic spray pipe 1 and the flexible conduit 8 are difficult problems, the telescopic spray pipe adopts a ring face sealing device to connect the telescopic spray pipe 1 and the flexible conduit 8, namely, when the outer joint 7 and the transitional joint 3 are connected through threads, the inclined face sealing ring 5, the flat gasket 4 and the hose clamping conical ring 6 are clamped between the inclined face sealing ring 5 and the transitional joint 3, along with the screwing of the threads, the inner hole face of the outer joint 7 presses the outer ring face of the hose clamping conical ring 6, the hose clamping conical ring 6 is contracted inwards, teeth 6.5 of the hose clamping conical ring 6 are further embedded into the flexible conduit 8 (the hardness of the hose clamping conical ring 6 is higher than that of the flexible conduit 8), the flexible conduit 8 and the outer joint 7 are firmly connected together, the flexible conduit 8 and the outer joint 7 are reliably sealed, the flexible conduit 8 stretches into one section of the transitional joint 3, and after the threads are screwed, the inclined face sealing ring 5 seals a connecting gap, so that reliable sealing is formed.
In addition, the end face of the flexible conduit 8 is tightly attached to the inner ring face of the outer joint 7, and the inner diameter of the telescopic spray pipe 1 is slightly larger than that of the transition joint 3; the inner hole of the transition joint 3 is slightly larger than the inner hole of the bendable guide pipe 8, and the design that the inner diameter is sequentially enlarged ensures that no necking phenomenon caused by human factors exists, the pipe diameter in the flight path is gradually enlarged in the flight process of the resin anchoring agent, the flight restriction and the interference are smaller and smaller, and the acceleration of the resin anchoring agent is facilitated.
The spray pipe also comprises a limiting cone 11, wherein the outer ring surface of the limiting cone 11 is conical, a threaded hole coaxial with the limiting cone 11 is formed in the limiting cone 11, one end of the limiting cone 11 is a small head end, and the other end of the limiting cone is a big head end;
the telescopic spray pipe 1 is provided with external threads, and the external threads are positioned between the exhaust hole 12 and the front end of the telescopic spray pipe 1;
the external thread of the telescopic spray pipe 1 is in threaded connection with the threaded hole of the limiting cone 11, the length of the external thread of the limiting cone 11 is larger than that of the threaded hole, the small head end of the limiting cone 11 is positioned at the front, and the large head end is positioned at the rear; the position of the limiting cone 11 in threaded connection with the external threads of the telescopic spray pipe 1 is adjusted, so that the distance between the limiting cone 11 and the front end of the telescopic spray pipe 1 is adjusted, the adjustment of the depth of the front end of the telescopic spray pipe 1 inserted into a drilled hole is finally realized, different insertion depths are conveniently set according to different drilling media, and as for the same drill bit, the size of the drilling diameter formed after operation is not only dependent on drilling pressure and pushing speed, but also related to the hardness of the drilled medium (rock or coal and other minerals), the harder the drilled medium is, the smaller the drilling diameter is, otherwise, the larger the aperture is. Correspondingly, when the resin anchoring agent is sprayed, the depth of the telescopic spray pipe 1 inserted into the drilled hole needs to be correspondingly adjusted, and the small and hard drilled hole has good guiding capability, and can complete good guiding of the telescopic spray pipe 1 and the drilled hole only by being inserted into a shallow depth; for large and soft boreholes, the insertion depth needs to be increased to meet the good guidance of the telescopic nozzle 1 and the borehole. In addition, the depth of the front end of the telescopic spray pipe 1 inserted into the drilled hole is controlled, so that the requirement of jetting a plurality of resin anchoring agents through a single hole is met.
The exhaust holes 12 are provided with a plurality of rows, the exhaust holes 12 of the plurality of rows are arranged at equal intervals along the circumferential direction of the telescopic spray pipe 1, each exhaust hole 12 is provided with a plurality of exhaust holes 12 along the length direction of the telescopic spray pipe 1, the quantity of each exhaust hole 12 is consistent, the arrangement of the exhaust holes 12 timely leaks dynamic high-pressure air for accelerating the task of the resin anchoring agent before entering into a drill hole (the resin anchoring agent 30 reaches the maximum speed when entering into the front end of the telescopic spray pipe 1 after being accelerated through a long pipeline), the high-pressure air can enter into the designated height in the drill hole through self-movement inertia), the phenomenon that the high-pressure air flow follows the resin anchoring agent to enter into the drill hole to impact the hole wall, so that sundries such as crushed stone coal dust slurry fall off in a large quantity, are blocked or adsorbed in the inner hole of the spray pipe is avoided, the cleaning frequency of the spray pipe is effectively reduced, and the spraying success rate is improved.
The number of the exhaust holes 12 in the plurality of rows is even, the number of the exhaust holes 12 in the odd rows is different from the number of the exhaust holes 12 in the even rows by 1, the exhaust holes 12 in the odd rows are arranged in a crossing manner with the exhaust holes 12 in the even rows, and one row of two holes and one row of three holes are alternately arranged (as shown in figure 1), so that the exhaust effect is ensured, and the exhaust pipe has the effects of high pipe wall structural strength and convenience in cleaning the inner wall.
The front end of the telescopic spray pipe 1 is provided with a bevel groove 10, and the bevel groove 10 is arranged to enable the part of the telescopic spray pipe 1 inserted into a drilled hole to be in a conical shape, so that the telescopic spray pipe can adapt to larger hole alignment eccentric quantity; in addition, compared with the existing spray pipe, the spray pipe is Kong Gengkuai and has higher hole alignment success rate.
The spray pipe also comprises a fixed conduit 2, the fixed conduit 2 is sleeved on the telescopic spray pipe 1, and the telescopic spray pipe 1 stretches back and forth in the fixed conduit 2; the telescopic spray pipe 1 provides telescopic power through an oil cylinder, a cylinder barrel of the oil cylinder is fixed on the fixed conduit 2, a cylinder rod of the oil cylinder is fixed on the telescopic spray pipe 1, and the telescopic spray pipe 1 is driven by the telescopic of the oil cylinder to stretch back and forth in the fixed conduit 2.
As shown in fig. 2, dust-proof rings 20 are mounted at both ends of the inner wall of the fixed conduit 2.
As shown in fig. 7, the application is applied to a hydraulic-driven automatic drilling rig, the movement of the telescopic jet pipe 1 is driven by a hydraulic oil cylinder, and the front end of the telescopic jet pipe is provided with a drill rod clamping mechanism capable of being opened and closed freely.
The application is applied to an automatic anchor drilling system, can be suitable for installing the resin anchoring agent 30 without dead angles at 360 degrees, and improves the working range of automatic anchoring.
The above embodiments are merely illustrative of the principles of the present application and its effectiveness, and are not intended to limit the application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that all equivalent modifications and variations of the application be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (6)
1. A long-range nozzle filled with resin anchoring agent, which is used for filling resin anchoring agent into a coal bed rock stratum borehole, and comprises a telescopic nozzle (1) and a bending conduit (8); the telescopic spray pipe (1) is connected with the bending guide pipe (8); the method is characterized in that: the telescopic spray pipe (1) can be telescopic back and forth;
the telescopic spray pipe (1) is connected with the bending guide pipe (8) through an annular surface sealing device;
the depth of the front end of the telescopic spray pipe (1) inserted into the drill hole is adjustable; the pipe wall at the front end of the telescopic spray pipe (1) is provided with an exhaust hole (12);
the inner wall of the telescopic spray pipe (1) is provided with a spiral guide groove (9) with a spiral curve with a preset angle alpha relative to the axis of the telescopic spray pipe, and the spiral guide groove is used for improving the stability and the range of the injection direction of the resin anchoring agent (30);
the annular surface sealing device comprises a transition joint (3), a flat gasket (4), an inclined surface sealing ring (5), a hose clamping taper ring (6) and an outer joint (7); the outer ring surface of the inclined surface sealing ring (5) is conical; the hose clamping conical ring (6) is of a tubular integrated structure, the hose clamping conical ring (6) comprises a cylindrical section (6.1) at the front end and a conical section (6.2) at the tail end, the outer annular surface of the cylindrical section (6.1) is cylindrical, the outer annular surface of the conical section (6.2) is conical, the big head end of the conical section (6.2) is close to the cylindrical section (6.1), the small head end is far away from the cylindrical section (6.1), and the outer diameter of the cylindrical section (6.1) is larger than that of the big head end of the conical section (6.2); the wall body of the hose clamping cone ring (6) is provided with a through groove (6.3) penetrating through the length of the hose clamping cone ring, the wall body of the cone section (6.2) is provided with a plurality of grooves (6.4) arranged along the length direction of the hose clamping cone ring, the grooves (6.4) are arranged at intervals along the circumferential direction of the cone section (6.2), the inner wall of the cone section (6.2) is sequentially provided with a plurality of protruding triangular teeth (6.5) along the axial direction of the cone section, and the teeth (6.5) are arranged along the circumferential direction of the cone section (6.2);
the front end of the bending conduit (8) passes through the outer joint (7) and extends out of the front end of the outer joint (7), a hose clamping taper ring (6), a flat gasket (4) and an inclined sealing ring (5) are sleeved on the part of the bending conduit (8) extending out of the outer joint (7) from back to front in sequence, the front end of the outer joint (7) is in threaded connection with the tail end of the transition joint (3), and the front end of the transition joint (3) is in threaded connection with the tail end of the telescopic spray pipe (1);
the included angle alpha between the spiral guide groove (9) and the axis of the telescopic spray pipe (1) is more than or equal to 5 degrees and less than or equal to 35 degrees;
the spiral guide grooves (9) are arranged at equal intervals;
the cross section of the spiral guide groove (9) is provided with a male groove (9.1) in a protruding mode, the cross section of the spiral guide groove is provided with a female groove (9.2) in a recessed mode, and the width b of the female groove is larger than or equal to the width a of the male groove;
the end face of the bendable conduit (8) is tightly attached to the inner annular surface of the outer joint (7), and the pipe diameters of the bendable conduit (8), the transition joint (3) and the telescopic spray pipe (1) are gradually increased.
2. A resin anchor loaded far-range nozzle as set forth in claim 1, wherein: the device also comprises a limiting cone (11), wherein the outer ring surface of the limiting cone (11) is conical, a threaded hole coaxial with the limiting cone is formed in the limiting cone (11), one end of the limiting cone (11) is a small head end, and the other end of the limiting cone is a big head end; the telescopic spray pipe (1) is provided with external threads, and the external threads are positioned between the exhaust hole (12) and the front end of the telescopic spray pipe (1); the external thread of flexible spray tube (1) is connected with the screw hole threaded connection of spacing awl (11), and the length of external thread is greater than the length of screw hole, and the tip of spacing awl (11) is located before, and the big end is located after.
3. A resin anchor filled long range nozzle as claimed in claim 1 or 2, wherein: the exhaust holes (12) are provided with a plurality of rows, the exhaust holes (12) of the rows are arranged at equal intervals along the circumferential direction of the telescopic spray pipe (1), each exhaust hole (12) of the row is provided with a plurality of exhaust holes (12) along the length direction of the telescopic spray pipe (1), and the quantity of each exhaust hole (12) of the row is consistent.
4. A resin anchor loaded far-range nozzle as set forth in claim 3 wherein: the number of the rows of the exhaust holes (12) is even, the number of the exhaust holes (12) of the odd rows is different from the number of the exhaust holes (12) of the even rows by 1, and the exhaust holes (12) of the odd rows are arranged in a crossing way with the exhaust holes (12) of the even rows.
5. A resin anchor loaded far-range nozzle as set forth in claim 4, wherein: the front end of the telescopic spray pipe (1) is provided with a bevel groove (10).
6. A resin anchor loaded far-range nozzle as set forth in claim 5, wherein: the telescopic spray pipe also comprises a fixed guide pipe (2), wherein the fixed guide pipe (2) is sleeved on the telescopic spray pipe (1), and the telescopic spray pipe (1) stretches back and forth in the fixed guide pipe (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011385005.2A CN112554924B (en) | 2020-12-02 | 2020-12-02 | Long-range spray pipe filled with resin anchoring agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011385005.2A CN112554924B (en) | 2020-12-02 | 2020-12-02 | Long-range spray pipe filled with resin anchoring agent |
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| CN112554924B true CN112554924B (en) | 2023-09-12 |
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