阅读说明：本技术 一种反向投砾装置 (Reverse gravel throwing device ) 是由 徐成林 陈明 朱晓亚 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种反向投砾装置,涉及铀矿开发配套设备技术领域,解决了砾料容易浮出井筒,导致投砾充填不充分,后期容易塌陷造成巨大损失的问题,包括上锥体、卡瓦筒、筛管；所述锁环套的下端、胶筒和胶筒压环套在胶筒衬套外侧；所述上锥体的上端与胶筒衬套的下端外侧通过螺纹连接；所述筛管通过焊接与连接头的下端和下接头的上端固定连接；所述下接头的下端外侧与密封座上端内侧通过螺纹连接；所述密封座的下端外侧与循环套上端内侧通过螺纹连接；所述密封座下端还设置有一组合页开关。本装置性能稳定,能够保证在投砾过程中砾料不会被循环带出井筒,所投砾料全部投到生产层位,且完井后也不会返出井筒,有效避免造成巨大损失。(The invention discloses a reverse gravel feeding device, relates to the technical field of uranium ore development corollary equipment, and solves the problems that gravel materials are easy to float out of a shaft, so gravel feeding and filling are insufficient, and huge loss is caused by later collapse easily; the lower end of the lock ring sleeve, the rubber cylinder and the rubber cylinder pressure ring are sleeved outside the rubber cylinder lining; the upper end of the upper cone is connected with the outer side of the lower end of the rubber cylinder lining through threads; the sieve tube is fixedly connected with the lower end of the connector and the upper end of the lower connector through welding; the outer side of the lower end of the lower joint is connected with the inner side of the upper end of the sealing seat through threads; the outer side of the lower end of the sealing seat is connected with the inner side of the upper end of the circulating sleeve through threads; the lower end of the sealing seat is also provided with a group of hinge switches. The device has stable performance, can ensure that gravel materials can not be circularly carried out of a shaft in the gravel feeding process, the whole gravel materials fed into a production layer are fed into the production layer, the shaft can not be returned after well completion, and huge loss is effectively avoided.)

1. A gravel reverse throwing device is characterized in that: the gravel reverse throwing device comprises:

the device comprises a pull rod (1), an unsealing joint (3), a rubber sleeve lining (11), an upper cone (13), a slip sleeve (14), a limiting ring (18) and a sieve tube (21); the upper part of the pull rod (1) is connected with a setting tool through threads; the lower part of the pull rod (1) is riveted with the lower cone (17) through a releasing shear pin (19); the deblocking joint (3) is fixedly arranged in an inner hole of the setting joint (2) through a setting pin (4); the lower part of the deblocking joint (3) is positioned on the outer side of the lock ring seat (7) and is fixed on the lock ring seat (7) through a deblocking pin (8); the lower end of the setting joint (2) is connected with the upper end of the lock ring sleeve (6) through threads; a lock ring (5) is arranged inside the lock ring sleeve (6); the rubber sleeve bushing (11) is sleeved outside the lock ring seat (7), and the connecting position of the upper end of the rubber sleeve bushing and the lock ring seat (7) is sealed through an O-shaped ring (9); the lower end of the lock ring sleeve (6), the rubber cylinder (10) and the rubber cylinder press ring (12) are sleeved outside the rubber cylinder lining (11); the upper end of the upper cone (13) is connected with the outer side of the lower end of the rubber cylinder lining (11) through threads; the slip cylinder (14) is sleeved outside the upper cone (13) and the lower cone (17); the slip cylinder (14) is internally provided with four slips (15); a pressure spring (16) is arranged in each groove at the outer side of each slip (15); the upper end of the lower cone (17) is connected with the outer side of the lower end of the lock ring seat (7) through threads, and the contact surface of the lower cone (17) and the lock ring seat (7) is also sealed through an O-shaped ring (9); the outer side of the limiting ring (18) is connected with the inner side of the slip cylinder (14) through threads; the lower end of the lower cone (17) is connected with the inner side of the connector (20) through threads; the sieve tube (21) is fixedly connected with the lower end of the connector (20) and the upper end of the lower connector (22) through welding; the outer side of the lower end of the lower joint (22) is connected with the inner side of the upper end of the sealing seat (23) through threads; the outer side of the lower end of the sealing seat (23) is connected with the inner side of the upper end of the circulating sleeve (24) through threads; the lower end of the sealing seat (23) is also provided with a group of hinge switches (25).

2. A reverse gravel placement device according to claim 1, wherein: the setting joint (2) can slide up and down outside the unsealing joint (3), and the setting joint (2) can break the setting pin (4) when sliding downwards.

3. A reverse gravel placement device according to claim 1, wherein: the lock ring sleeve (6) can also slide up and down on the outer side of the deblocking joint (3), and the rubber sleeve (10) and the rubber sleeve pressing ring (12) can slide up and down on the outer side of the rubber sleeve lining (11).

4. A reverse gravel placement device according to claim 1, wherein: the upper cone (13) can slide up and down in a cavity between the outer side of the lock ring seat (7) and the inner side of the slip cylinder (14).

5. A gravel back-projecting apparatus according to claim 4, wherein: and four inclined planes are arranged on one sides of the upper cone (13) and the lower cone (17) close to the slips (15), and the tops and the bottoms of the four slips (15) are also provided with corresponding inclined planes.

6. A gravel back-projecting apparatus according to claim 5, wherein: the inclined planes on the upper cone (13) and the lower cone (17) are respectively embedded with the inclined planes at the upper end and the lower end of the slip (15), and when the upper cone (13) slides downwards, the slip (15) is pushed to slide outwards.

7. A gravel back-projecting apparatus according to claim 6, wherein: four groups of inclined planes are arranged on the outer sides of the upper cone (13) and the lower cone (17), the four groups of inclined planes correspond to each other up and down, and other positions are planes.

8. A gravel back-projecting apparatus according to claim 4, wherein: the outer side of the slip cylinder (14) is annularly provided with four rectangular openings in total, and the compression spring (16) can penetrate through the rectangular openings to extend outwards when the slips (15) slide outwards.

9. A reverse gravel placement device according to claim 1, wherein: the lower end of a cavity in the sealing seat (23) is of a funnel-shaped structure, and the bottom end of a gravel throwing insertion tube is downwards inserted into the sealing seat (23) from an opening at the upper end of the device when gravel is thrown.

10. A reverse gravel placement device according to claim 1, wherein: the outer side of the circulating sleeve (24) is provided with four strip-shaped openings in total, and the outer side of the sieve tube (21) is annularly provided with a plurality of small holes.

Technical Field

The invention relates to the technical field of uranium ore development corollary equipment, in particular to a reverse gravel feeding device.

Background

Along with the operation of the ground-immersed uranium mining mine, drilling can lead to the drawing liquid volume to descend because of various problems sharply, can't accomplish and take out, annotate the liquid operation, become inefficacy drilling, and filter jam or damaged are the leading cause that causes the drilling inefficacy, and this also will throw behind the well casing and will throw the gravel pipe and go into to the well casing outside and throw the gravel to can restore drilling.

Based on the above, the inventor finds that in the uranium mine development and production process, after casing cementing is completed under a ground leaching uranium mining drill hole, the casing is cut off and the cement ring outside the casing is completed after circulating gravel feeding and filling, but as the density of the gravel material fed is smaller than that of water and the gravel material mixed with the water floats on the liquid surface, the gravel material continuously floats out of a shaft in the gravel feeding process, the circulating gravel feeding and filling is insufficient, the stratum is easy to collapse in the later production process to bury the shaft, the gravel is required to be fed again if the stratum is light, and the uranium mine is scrapped if the stratum is heavy, so that huge loss is caused; therefore, the existing requirement is not met, and a gravel reverse throwing device is provided for the device.

Disclosure of Invention

The invention aims to provide a reverse gravel feeding device, which solves the problems that in the uranium ore development and production process, after casing cementing is carried out in an in-situ leaching uranium extraction drill hole, the well is completed after gravel is circularly fed and filled to the positions of a cut casing and a cement ring outside the casing, but because the density of the fed gravel is lower than that of water and the gravel is mixed with the water and then floats on the surface of the liquid, the gravel continuously floats out of a shaft in the gravel feeding process, the gravel is not fully fed and filled circularly, the shaft is buried due to the fact that the stratum is easy to collapse in the later production process, the gravel needs to be fed again in a light condition, and the uranium mine is scrapped in a heavy condition, so that huge loss is caused.

In order to achieve the purpose, the invention provides the following technical scheme: a gravel reverse feeding device comprises a pull rod, an unsealing joint, a rubber sleeve bushing, an upper cone, a slip sleeve, a limiting ring and a sieve tube; the upper part of the pull rod is connected with a setting tool through threads; the lower part of the pull rod is riveted with the lower cone through a releasing shear pin; the deblocking joint is fixedly arranged in an inner hole of the setting joint through a setting pin; the lower part of the deblocking joint is positioned on the outer side of the lock ring seat and is fixed on the lock ring seat through a deblocking pin; the lower end of the setting joint is connected with the upper end of the lock ring sleeve through threads; a lock ring is arranged inside the lock ring sleeve; the rubber sleeve bushing is sleeved outside the locking ring seat, and the connecting position of the upper end of the rubber sleeve bushing and the locking ring seat is sealed through an O-shaped ring; the lower end of the lock ring sleeve, the rubber cylinder and the rubber cylinder pressure ring are sleeved outside the rubber cylinder lining; the upper end of the upper cone is connected with the outer side of the lower end of the rubber cylinder lining through threads; the slip cylinder is sleeved on the outer sides of the upper cone and the lower cone; the inside of the slip cylinder is also provided with four slips; a pressure spring is arranged in each groove outside the four slips; the upper end of the lower cone is connected with the outer side of the lower end of the lock ring seat through threads, and the contact surface of the lower cone and the lock ring seat is also sealed through an O-shaped ring; the outer side of the limiting ring is connected with the inner side of the slip cylinder through threads; the lower end of the lower cone is connected with the inner side of the connector through threads; the sieve tube is fixedly connected with the lower end of the connector and the upper end of the lower connector through welding; the outer side of the lower end of the lower joint is connected with the inner side of the upper end of the sealing seat through threads; the outer side of the lower end of the sealing seat is connected with the inner side of the upper end of the circulating sleeve through threads; the lower end of the sealing seat is also provided with a group of hinge switches.

Preferably, four inclined planes are arranged on one sides, close to the slips, of the upper cone and one side, close to the slips, of the lower cone, and the tops and the bottoms of the four slips are also provided with corresponding inclined planes.

Preferably, four groups of inclined surfaces are arranged on the outer sides of the upper cone and the lower cone, the four groups of inclined surfaces vertically correspond to each other, and other positions are planes.

Preferably, the setting joint can slide up and down outside the deblocking joint, and the setting joint can make the setting pin break when sliding downwards.

Preferably, the outer side of the slip cylinder is provided with four rectangular openings in a circular arrangement, and the compression spring can penetrate through the rectangular openings to extend outwards when the slips slide outwards.

Preferably, the outer side of the circulating sleeve is provided with four strip-shaped openings, and the outer side of the sieve tube is annularly provided with a plurality of small holes.

Preferably, the lower end of the cavity in the sealing seat is of a funnel-shaped structure, and the bottom end of the gravel casting cannula is inserted into the sealing seat from an opening at the upper end of the device downwards during gravel casting.

Preferably, the lock ring sleeve also can slide from top to bottom in the deblocking connects the outside, and packing element clamping ring can slide from top to bottom in the packing element bush outside.

Preferably, the inclined surfaces of the upper cone and the lower cone are respectively embedded with the inclined surfaces of the upper end and the lower end of the slip, and when the upper cone slides downwards, the slip is pushed to slide outwards.

Preferably, the upper cone is capable of sliding up and down in a cavity between the outside of the lock ring seat and the inside of the slip bowl.

Compared with the prior art, the invention has the beneficial effects that:

1. the sealing seat is used for being embedded with a gravel throwing insertion pipe for throwing materials, the bottom end of the gravel throwing insertion pipe can form sealing with a funnel-shaped cavity inside the sealing seat during feeding, then gravel materials can enter a position needing gravel filling through an opening on the outer side of the circulating sleeve, the rubber sleeve can play a role in packing, the sieve pipe plays a role in blocking the gravel materials, only liquid can circulate out of a shaft through the sieve pipe and an annular space, the hinge switch is automatically closed after the gravel throwing insertion pipe is pulled out, the gravel materials are effectively blocked from flowing into the shaft, compared with the existing gravel throwing method, the device is stable in performance, the gravel materials can be ensured not to be circularly taken out of the shaft in the gravel throwing process, all the thrown gravel materials are thrown to a production position, the gravel materials cannot return out of the shaft after well completion, and huge loss is effectively avoided.

2. The outer sides of the upper cone and the lower cone are respectively provided with an inclined plane corresponding to the upper end and the lower end of the slip, the slip and a pressure spring on the outer side of the slip can be pushed to move outwards when the upper cone moves downwards, the clamp spring is used for anchoring the device on the sleeve, and the slip cylinder is provided with four rectangular openings capable of enabling the clamp spring to extend outwards, so that the device is simple and convenient to anchor.

Drawings

FIG. 1 is a schematic front view of the present invention rotated 90 degrees and cut;

FIG. 2 is a schematic view of a partial axial side configuration of the position of the slips and compression spring of the present invention;

FIG. 3 is a schematic view of a partial cut-away structure of the position of the slips and compression spring of the present invention;

FIG. 4 is a schematic view of a partially cut-away structure of the upper cone of the present invention after sliding downward;

FIG. 5 is a schematic view of a partial axial side structure of the slip and cone of the present invention after disassembly;

FIG. 6 is a schematic side view of the seal seat of the present invention after being cut;

FIG. 7 is a schematic side view of the recycling sleeve of the present invention;

FIG. 8 is a schematic axial side view of the screen of the present invention;

in the figure: 1. a pull rod; 2. setting a joint; 3. deblocking the linker; 4. setting the pin; 5. a locking ring; 6. a lock ring sleeve; 7. a lock ring seat; 8. unsealing the pin; 9. an O-shaped ring; 10. a rubber cylinder; 11. a rubber sleeve bushing; 12. pressing a rubber cylinder; 13. an upper cone; 14. a slip cylinder; 15. slips; 16. a pressure spring; 17. a lower cone; 18. a limiting ring; 19. releasing the shear pin; 20. a connector; 21. a screen pipe; 22. a lower joint; 23. a sealing seat; 24. a circulating sleeve; 25. a hinge switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 8, an embodiment of the present invention includes: a gravel reverse feeding device comprises a pull rod 1, an unsealing joint 3, a rubber sleeve liner 11, an upper cone 13, a slip sleeve 14, a limiting ring 18 and a sieve tube 21; the upper part of the pull rod 1 is connected with a setting tool through threads; the lower part of the pull rod 1 is riveted with a lower cone 17 through a releasing shear pin 19; the deblocking joint 3 is fixedly arranged in an inner hole of the setting joint 2 through a setting pin 4; the setting joint 2 can slide up and down on the outer side of the deblocking joint 3, and the setting pin 4 can be broken when the setting joint 2 slides down, so that the lower lock ring sleeve 6, the rubber cylinder 10 and the rubber cylinder press ring 12 can be pushed to slide down; the lower part of the deblocking joint 3 is positioned on the outer side of the lock ring seat 7 and is fixed on the lock ring seat 7 through a deblocking pin 8;

the lower end of the setting joint 2 is connected with the upper end of the lock ring sleeve 6 through threads; the lock ring sleeve 6 can also slide up and down on the outer side of the deblocking joint 3, the rubber cylinder 10 and the rubber cylinder press ring 12 can slide up and down on the outer side of the rubber cylinder liner 11, and then the lower upper cone 13 can be pushed to slide down to anchor the device; a lock ring 5 is arranged inside the lock ring sleeve 6; the rubber sleeve bush 11 is sleeved outside the locking ring seat 7, and the connecting position of the upper end of the rubber sleeve bush and the locking ring seat 7 is sealed through an O-shaped ring 9; the lower end of the lock ring sleeve 6, the rubber cylinder 10 and the rubber cylinder press ring 12 are sleeved outside the rubber cylinder liner 11; the upper end of the upper cone 13 is connected with the outer side of the lower end of the rubber cylinder lining 11 through threads;

four inclined planes are arranged on one sides of the upper cone 13 and the lower cone 17 close to the slips 15, corresponding inclined planes are also arranged at the top and the bottom of the four slips 15, and when the upper cone 13 slides downwards, the slips 15 can be pushed to slide outwards through the inclined planes at the lower end and the upper end of the lower cone 17, so that the pressure spring 16 outside the slips 15 penetrates through the opening on the slip cylinder 14 and extends outwards to be anchored on the sleeve; the upper cone 13 can slide up and down in the cavity between the outer side of the lock ring seat 7 and the inner side of the slip cylinder 14, so that the device can be anchored on the sleeve; the slip cylinder 14 is sleeved outside the upper cone 13 and the lower cone 17; the outer side of the slip cylinder 14 is annularly provided with four rectangular openings in total, and the compression spring 16 can penetrate through the rectangular openings to extend outwards when the slips 15 slide outwards, so that the device can be anchored on a sleeve; the slip cylinder 14 is internally provided with four slips 15; a pressure spring 16 is arranged in each groove at the outer side of each slip 15;

the upper end of the lower cone 17 is connected with the outer side of the lower end of the lock ring seat 7 through threads, and the contact surface of the lower cone 17 and the lock ring seat 7 is also sealed through an O-shaped ring 9; the outer side of the limiting ring 18 is connected with the inner side of the slip cylinder 14 through threads; the lower end of the lower cone 17 is connected with the inner side of the connector 20 through threads; the sieve tube 21 is fixedly connected with the lower end of the connector 20 and the upper end of the lower connector 22 through welding; the outer side of the lower end of the lower joint 22 is connected with the inner side of the upper end of the sealing seat 23 through threads; the lower end of the cavity in the sealing seat 23 is of a funnel-shaped structure, and the bottom end of a gravel-throwing insertion tube is downwards inserted into the sealing seat 23 from an opening at the upper end of the device when gravel is thrown, so that the bottom end of the gravel-throwing insertion tube can form sealing with the conical surface of the sealing seat 23; the outer side of the lower end of the sealing seat 23 is connected with the inner side of the upper end of the circulating sleeve 24 through threads; the lower end of the sealing seat 23 is also provided with a group of hinge switches 25.

Furthermore, four groups of inclined planes are arranged on the outer sides of the upper cone 13 and the lower cone 17, the four groups of inclined planes vertically correspond to each other, and other positions are planes, so that the positions of the four groups of slips 15 can be limited, and the slips 15 are prevented from shifting.

Furthermore, the outside of the circulating sleeve 24 is provided with four strip-shaped openings in total, the outside of the sieve tube 21 is annularly arranged and provided with a plurality of small holes, mixed liquid in a ground stirring tank is pumped into a gravel throwing pipe column through a sand pump in use, the mixed liquid enters a position needing gravel filling through an open slot of the circulating sleeve 24 through a gravel throwing insertion pipe, the sieve tube 21 can play a role in blocking gravel materials, and only the liquid can circulate out of a shaft through the sieve tube 21 and the annular space.

Furthermore, the inclined planes on the upper cone 13 and the lower cone 17 and the inclined planes at the upper end and the lower end of the slip 15 are respectively embedded with each other, when the upper cone 13 slides downwards, the slip 15 is pushed to slide outwards, and when the upper cone 13 slides downwards, the slip 15 is pushed to slide outwards through the inclined planes at the lower end and the upper end of the lower cone 17, so that the pressure spring 16 outside the slip 15 penetrates through the opening on the slip cylinder 14 and extends outwards to be anchored on the sleeve.

In another embodiment, a layer of rubber film is fixedly arranged inside the four rectangular openings on the outer side of the slip cylinder 14, when the slips 15 slide towards the outer side, the pressure spring 16 can push the layer of rubber film to deform towards the outer side in a protruding mode, and therefore the device can be anchored on a sleeve, and the layer of rubber can play a role in preventing external sand particles from entering the slip cylinder 14.

The working principle is as follows: when the device is used, the upper end of a pull rod 1 of the reverse gravel throwing device is fixedly connected with a setting tool through a threaded hole, then the device is put down to the underground, when the device is put down to a designed position in the underground, the device is pressed through the ground, a hydraulic cylinder push cylinder of the setting tool pushes a setting joint 2 in the device to move downwards outside an unsealing joint 3, a setting pin 4 is sheared after being extruded at the moment, then the setting joint 2 pushes a locking ring sleeve 6 to move downwards, the locking ring sleeve 6 pushes an upper cone 13 to slide downwards outside a locking ring seat 7 through a rubber cylinder 10 and a rubber cylinder press ring 12, the upper cone 13 pushes a slip 15 to slide outwards through an inclined plane at the lower end and the upper end of a lower cone 17 when sliding downwards, so that a pressure spring 16 outside the slip 15 penetrates through an opening on the slip cylinder 14 to extend outwards and be anchored on a sleeve, and simultaneously the rubber cylinder 10 is extruded to compress a sealed annular space inside, meanwhile, the lock ring 5 is meshed with the sawtooth-shaped thread of the lock ring sleeve 6, when the setting force exceeds the tensile limit of the releasing shear pin 19, the releasing shear pin 19 can be broken, the reverse gravel-throwing device can be used for setting and releasing a releasing hand, after the setting tool is pulled out, the gravel-throwing insertion pipe is connected to the lower end of the gravel-throwing pipe column, when the distance is about two meters away from the reverse gravel-throwing device, the gravel-throwing pipe column is slowly lowered, the bottom end of the gravel-throwing insertion pipe is downwards inserted into the sealing seat 23 from the opening at the upper end of the device, the hinge switch 25 is opened by the gravel-throwing insertion pipe, the gravel-throwing insertion pipe and the conical surface of the sealing seat 23 form a seal, when gravel is circularly thrown, mixed liquid in a ground stirring tank is pumped into the gravel-throwing pipe column through a gravel pump and enters a position to be filled through the opening groove of the circulating sleeve 24, and the gravel thrown material can be remained at a target position due to the blockage of the rubber sleeve 10 and the sieve pipe 21, the gravel is circularly discharged out of the shaft through the annular space, after gravel feeding is finished, the gravel feeding insertion pipe is pulled out, the hinge switch 25 is automatically closed, and gravel materials are blocked from flowing into the shaft.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.