JP3897451B2 - Slime recovery baler unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slime recovery baler apparatus applied to a wireline core barrel.
[0002]
[Prior art]
As shown in Japanese Patent Publication No. 44-642, a core barrel outer pipe device (hereinafter referred to as an “outer tube”) is attached to the tip of a drill stem (hereinafter referred to as “drill rod”). Assembly ”) is continuously provided, and a core barrel / inner tube device (hereinafter, this core barrel / inner tube device is referred to as“ inner tube assembly ”) is inserted into the outer tube assembly through the inner space of the drill rod, With a latch provided on the upper part of the inner tube assembly (hereinafter, this latch is referred to as a “latch device”), the inner tube assembly is fixed at a fixed position of the outer tube assembly, and a drill / Bit (hereinafter this drill bit is simply "bit The core (Iwashin) cut out into a cylindrical shape by boring action of the rotation of) that there is a core barrel which is taken up inside of the inner tube assembly.
[0003]
This core barrel stops drilling when a sufficiently long core is taken inside the inner tube assembly, and passes through the drill rod to the upper end of the inner tube assembly and is connected to the tip of the wire line. The shot device is dropped, and by this overshot device, the latch device is released by grasping and pulling the latch release portion provided at the upper end of the inner tube assembly, and the inner tube assembly is pulled up from the outer tube assembly. , A wireline core barrel which is taken out of the drill rod and collects the core from within the inner tube assembly.
[0004]
Conventionally, when collecting a core (rock core) with this type of core barrel, drilling the bit while supplying water from the ground to the tip bit through the water swivel, drill rod and outer tube assembly during boring. By continuing to discharge the slime (sometimes called sludge or cuttings, etc.) generated by the above to the ground, this core barrel continues to dig.
[0005]
However, depending on the geological conditions, slime may not be discharged during excavation. In such a case, the core barrel in the ground is once taken out to the ground, and instead the baler device is lowered to the bottom of the excavation hole. The slime is accommodated by the baler device, and the slime is collected on the ground together with the baler device.
[0006]
This baler apparatus is also called a sand pump, and as shown in FIG. 6, a plunger 2 is slidably fitted into a cylindrical baler body 1, and the lower end of the plunger 2 has a baler body 1. A piston 3 having a diameter smaller than the inner diameter is slidably engaged, and a rod portion 3a of the piston 3 is connected to a rod 4 that is sequentially connected to the ground. A stop valve 5 is provided to be freely opened and closed by a hinge 6, and a suction port 7 is provided below the check valve 5.
[0007]
In this baler device, when only the rod 4 is pulled up, the piston 3 is brought into close contact with the plunger 2 so that a negative pressure is generated on the lower side of the piston 3, and the main body of the baler passes from the suction port 7 through the check valve 5. Inhale slime into one.
[0008]
When the rod 4 is pushed down, a gap is created between the plunger 2 and the piston 3, so that air and moisture below the piston 3 cause the clearance on the outer periphery of the piston 3, the clearance on the inner periphery of the plunger 2, It is discharged to the outside through a discharge hole 8 provided in the upper portion of the baler body 1 through a gap on the outer periphery and the like.
[0009]
By repeating such vertical movement of the rod 4, when the slime is filled in the baler body 1, the baler apparatus is pulled up to the ground to recover the slime.
[0010]
[Problems to be solved by the invention]
In this conventional slime collection work, all the core barrels in the ground are once taken out to the ground, and instead the baler device is inserted to the bottom of the drilling hole, so it takes time to take out and reinsert the core barrel, Further, when the baler apparatus is lowered, the long rods 4 are sequentially connected, and when the baler apparatus is recovered to the ground, the long rods 4 are sequentially removed, so that these operations are not easy.
[0011]
This invention is made | formed in view of such a point, and it aims at providing the baler apparatus for slime collection | recovery which can be applied to a wireline core barrel and can improve workability | operativity.
[0012]
[Means for Solving the Problems]
According to the first aspect of the present invention, a slime recovery cylinder that is slidably fitted to an outer tube assembly in a wireline core barrel for core collection, and the slime recovery cylinder is fixed inside the outer tube assembly. A latch mechanism that can be unlocked, a pump mechanism that sucks slime into a slime collection cylinder fixed by the latch mechanism, and a cable that drives the pump mechanism to release the latch mechanism and raise and lower the slime collection cylinder It is the equipped slime recovery baler apparatus.
[0013]
Then, leaving the outer tube assembly of the wireline / core barrel on the ground, it is used as it is as a guide means when inserting the slime recovery cylinder, and when the slime recovery cylinder is inserted to the tip of the outer tube assembly by rewinding the cable, The collection cylinder is fixed by a latch mechanism. By driving the pump mechanism by winding and unwinding the cable, the slime is sucked into the slime collection cylinder. When collecting the slime collection cylinder filled with slime, the latch mechanism is released only by winding the cable, and the slime collection cylinder is pulled up.
[0014]
According to a second aspect of the present invention, the latch mechanism according to the first aspect is provided with a locking sleeve provided integrally with the slime collecting cylinder and having a taper portion in the axial direction, and a shaft on the outer peripheral side of the taper portion of the locking sleeve. A ball cage that is movably fitted and has a ball fitting hole in a radial direction, and a latch ball that is fitted and held in the ball fitting hole of the ball cage and that is freely movable toward and away from the inner surface of the outer tube assembly The ball cage is moved axially to the larger diameter side of the taper portion and the latch ball is pressed against the inner surface of the outer tube assembly, and the ball cage is moved axially to the smaller diameter side of the taper portion against this spring. The release head that releases the latch ball and the latch release operation that is engaged with the release head in conjunction with the cable pulling operation. A slime recovery Béla apparatus and a body.
[0015]
When the slime recovery cylinder and the locking sleeve are locked at the bottom of the excavation hole or at a part of the outer tube assembly, the ball cage is axially moved by the spring toward the larger diameter side of the taper portion of the locking sleeve. The latch ball is pressed against the inner surface of the outer tube assembly by the portion, and the slime recovery cylinder and the outer tube assembly are integrated. On the other hand, when the release head is pushed up by the latch release operating body in conjunction with the large pulling operation of the cable, the ball cage moves axially toward the small diameter side of the tapered portion against the spring, and the latch ball is pushed. After being released, the slime collection cylinder is pulled up.
[0016]
According to a third aspect of the present invention, the pump mechanism according to the first or second aspect is configured such that the slime suction hole provided in the lower part of the slime collection cylinder and the upward reverse liquid passage provided in the slime suction hole are possible. A stop valve, a piston slidably liquid-tightly fitted in the upper part of the slime recovery cylinder, an upper check valve provided inside the piston and capable of passing an upward liquid, and the upper check valve A slime recovery baler apparatus including a drainage passage for draining water that has flowed out onto a piston to the outside.
[0017]
Then, by the reciprocating motion of the piston, the slime accumulated at the bottom of the excavation hole is sucked into the slime recovery cylinder from the slime suction hole through the lower check valve, and the moisture in the slime goes to the outside through the upper check valve and the drainage passage. Drain.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to one embodiment shown in FIGS.
[0019]
As shown in FIG. 1, among a number of cylindrical drill rods in a core-collecting wireline core barrel that are inserted into the ground G while being sequentially screwed together, the tip-end drill rod 10 has a wireline. A cylindrical outer tube assembly 20 in the core barrel is screwed together.
[0020]
In the outer tube assembly 20, an outer tube upper adapter 21 is screwed to the drill rod 10, an outer tube lower adapter 22 is screwed to the outer tube upper adapter 21, and an outer tube 23 is connected to the outer tube lower adapter 22. Are screwed, a bit adapter 24 is screwed to the outer tube 23, and a bit 25 is screwed to the bit adapter 24.
[0021]
A concave groove 26 is provided between the outer tube upper adapter 21 and the outer tube lower adapter 22, and a landing ring 27 is sandwiched between the outer tube lower adapter 22 and the outer tube 23. An inner tube stabilizer 28 is sandwiched between the adapter 24.
[0022]
Further, an inner tube assembly (not shown) for collecting a core (rock core) cut into a cylindrical shape by the bit 25 is provided inside the outer tube assembly 20 during boring. When collecting slime during boring, slime recovery baler devices (hereinafter referred to simply as “baler devices”) 30 inserted in place of the inner tube assembly are detachably attached. .
[0023]
The structure of this baler apparatus 30 is as follows.
[0024]
As shown in FIG. 2, 31 is a cable wound or unwound by a rotating drum installed on the ground through the drill rod 10, and a sinker adapter is connected to the lower end of the cable 31 via a swivel assembly 32. 33 is rotatably mounted, and the sinker bar 34 and sinker bar 35, which are weights, are sequentially screwed to the sinker adapter 33, and the upper end of the hanging rod 37 is screwed to the sinker bar 35 via the coupling 36. It is connected.
[0025]
As shown in FIG. 3, an unlocking release head 38 is slidably fitted to the outer periphery of the hanging rod 37. The release head 38 is engageable with the upper end of a coupling 39 as a latch release operating body screwed to the lower end portion of the hanging rod 37.
[0026]
The coupling 39 engages with the lower surface of the release head 38 and pushes it up when the baler device 30 is inserted into the drill rod 10 and the outer tube assembly 20 and taken out from the inside. It is.
[0027]
The upper end portion of the spring case 41 is screwed to the outer peripheral surface of the release head 38, and the outer peripheral surface of the upper end portion of the ball cage 42 is screwed to the lower end portion of the spring case 41.
[0028]
The ball cage 42 is provided with a taper hole 43 that expands downward in the inner peripheral surface, and a plurality of ball fitting holes 44 are provided in the radial direction at the maximum diameter portion of the taper hole 43. A plurality of stainless steel latch balls 45 are fitted and held in the fitting holes 44 so as to be movable in the radial direction. These latch balls 45 can be brought into contact with and separated from the inner surface of the drill rod 10 or the inner surface including the concave groove 26 of the outer tube upper adapter 21, and are brought into press contact with and engaged with these inner surfaces.
[0029]
An upper portion of a locking sleeve 46 is fitted inside the ball cage 42 so as to be movable in the axial direction, and a spring stopper 47 is screwed to an upper end portion of the locking sleeve 46, and the lower end surface of the spring stopper 47 and the ball cage Between the upper end surface of 42, a coil spring 48 fitted inside the spring case 41 is interposed. A taper portion 49 having a diameter reduced upward is provided at an intermediate portion of the locking sleeve 46 to move the latch ball 45 in the radial direction.
[0030]
The coil spring 48 has a biasing force in a direction in which the ball cage 42 is moved in the axial direction toward the large diameter side of the tapered portion 49 and the latch ball 45 is pressed against the inner surface of the outer tube assembly 20.
[0031]
On the other hand, the release head 38 is pushed up by the coupling 39 by the pulling operation by continuous winding of the cable 31, and moves the ball cage 42 in the axial direction to the small diameter side of the tapered portion 49 against the coil spring 48, thereby latching the ball. Release 45.
[0032]
The release head 38, the coupling 39, the spring case 41, the ball cage 42, the latch ball 45, the locking sleeve 46, and the coil spring 48 can be unfixed to fix a slime collection cylinder, which will be described later, inside the outer tube assembly 20. A latch mechanism 50 is configured.
[0033]
As shown in FIG. 4, an upper end portion of a hanging body 51 having a locked step portion 51 a that can be locked by the landing ring 27 is screwed to the lower end portion of the locking sleeve 46. An upper end portion of a slime upper barrel 52 serving as a slime collection cylinder is screwed to the lower end portion of the.
[0034]
As shown in FIG. 5, an upper end portion of a slime lower barrel 54 as a slime collection cylinder is screwed to a lower end portion of the slime upper barrel 52 via a barrel coupling 53.
[0035]
The slime upper barrel 52 is slidably fitted in the inner tube stabilizer 28 of the outer tube assembly 20, and the slime lower barrel 54 is slidable in the lower end opening of the bit 25 of the outer tube assembly 20. It is fitted and protruded.
[0036]
A bottom shoe 55 is screwed to the lower end portion of the slime lower barrel 54. A valve support 56 is attached to one side portion of the bottom shoe 55 by a spring pin 57, and a disc-shaped flap valve 58 as a lower check valve capable of passing an upward liquid is attached to one end portion of the valve support 56. It is rotatably attached by a support shaft 58a.
[0037]
The flap valve 58 is provided in a slime suction hole 59a formed in the axial direction of the bottom shoe 55 so as to be openable and closable. The slime suction hole 59a is a lateral slime suction hole 59b opened at the bottom of the bottom shoe 55. Opened inside.
[0038]
Also, as shown in FIG. 3, the upper end of the connector rod 60 is screwed to the lower end of the hanging rod 37 via the coupling 39. As shown in FIG. The upper end of the piston 61 is screwed to the lower end.
[0039]
The piston 61 has a piston body 62 as a main component, and an O-ring 63 is fitted on the outer peripheral surface of the piston body 62. The liquid is slidable on the inner wall of the slime upper barrel 52 through the O-ring 63. Closely fitted.
[0040]
On the upper part of the piston body 62, a shoulder 65 that can be engaged with a pushed upper part 64 formed on the lower part of the hanging body 51 is formed.
[0041]
In addition, a ball case 66 that constitutes the piston 61 together with the piston body 62 is screwed to the lower portion of the piston body 62, and the inside of the ball case 66 is made of stainless steel as an upper check valve that allows upward liquid flow. The ball valve 67 is fitted.
[0042]
The ball valve 67 is tightly locked to a check valve bushing (valve seat) 68 that is screwed into a lower portion of the ball case 66, and a rising stroke is regulated by a spring pin 69 inserted in the diameter direction of the ball case 66. .
[0043]
The flap valve 58, slime suction holes 59a and 59b, piston 61, ball valve 67 and check valve bushing 68 constitute a pump mechanism 70 for sucking slime into the slime upper barrel 52 and slime lower barrel 54. Yes.
[0044]
Also, the shoulder 65 of the piston body 62 is provided with a drain hole 71 for discharging water rising from the slime upper barrel 52 through the ball valve 67 by the vertical movement of the piston body 62, and the hanging body 51 A drainage hole 72 is provided in the lower portion of the pipe to discharge water that is pushed out from the inside of the outer tube 23 and the like when the slime upper barrel 52 and the slime lower barrel 54 are lowered.
[0045]
These drain holes 71 and 72 are communicated with a drain hole 74 provided in the upper part of the hanging body 51 through a drain passage 73 provided in the hanging body 51. Further, the drain hole 74 is formed as shown in FIG. As shown in FIG. 6, the outer tube assembly 20 communicates with drainage passages 75, 76, 77, and 78 provided between the outer tube assembly 20 and each component of the baler device 30 located above the hanging body 51.
[0046]
These drain passages 75, 76, 77, 78 are passages for draining the water that has flowed out onto the piston 61 through the ball valve 67 to the outside, and communicate with the drain outlet installed on the ground through the drill rod 10. Has been.
[0047]
Next, the operation of the illustrated embodiment will be described.
[0048]
First, in the boring operation, an inner tube assembly (not shown) for collecting a core (rock core) cut into a cylindrical shape by the bit 25 is inserted into the outer tube assembly 20, and this inner tube is inserted. A latch device (not shown) provided at the top of the assembly is engaged between the concave groove 26 of the outer tube assembly 20 and the landing ring 27, and the drill rod 10 and the outer tube assembly 20 are While supplying water to the bit 25 at the tip through the inside, the slime generated by the rotary excavation of the bit 25 is discharged to the ground through the outer peripheral gap of the outer tube assembly 20 and the drill rod 10, and the outer tube assembly 20 and Drill the inner tube assembly.
[0049]
During this excavation, if the slime cannot be lifted and discharged due to the slime's specific gravity becoming too high, it goes through the drill rod 10 to the upper end of the inner tube assembly and to the tip of the wire line. The connected overshot device (not shown) is dropped, and the overshot device holds the latch release portion provided at the upper end portion of the inner tube assembly to pull the latch device. The tube assembly is pulled up from the outer tube assembly 20 and once taken out through the drill rod 10 to collect the core in the inner tube assembly.
[0050]
The drill rod 10 and the outer tube assembly 20 are lifted from the bottom portion (core sampling trace portion) B of the drill hole H as shown in FIG. It is fixed at a predetermined height position. The height position of the outer tube assembly 20 is set according to the slime sedimentation depth (2 m to several tens of m) in the excavation hole H.
[0051]
Then, instead of the inner tube assembly, as shown in FIG. 1, the baler device 30 is inserted into the outer tube assembly 20 through the drill rods 10 from the upper end opening of the uppermost drill rod.
[0052]
When the baler device 30 is inserted, the coil spring 48 is moved by the weight of the member connected to the lower side of the locking sleeve 46 with respect to the release head 38, the spring case 41 and the ball cage 42 locked by the coupling 39. Since the latch ball 45 is relatively lowered while being compressed and is in an unlatched state where the latch ball 45 is located on the small diameter side of the taper portion 49 of the locking sleeve 46, the baler device 30 moves inside the drill rod 10 and the outer tube assembly 20. The slime lower barrel 54 protrudes from the lower end opening of the bit 25 and is inserted into the slime in the excavation hole H.
[0053]
In FIG. 1, a locked stepped portion 51 a formed on a hanging body 51 of the baler device 30 is locked by a landing ring 27 of the outer tube assembly 20, and a latch ball 45 of the baler device 30 is fixed to the outer tube assembly 20. Although it is an example engaged with the concave groove 26, depending on the height position of the outer tube assembly 20 in the excavation hole H, before the locked stepped portion 51 a is locked by the landing ring 27, the bottom The tip of the shoe 55 may be locked at the bottom B of the excavation hole H.
[0054]
In such a case, the latch ball 45 is not necessarily engaged with the concave groove 26, and is located on the inner surface of the outer tube upper adapter 21 or the inner surface of the drill rod 10, but the locking sleeve 46 locked in place. On the other hand, the ball cage 42 is pushed down by the restoring force of the coil spring 48, and the latch ball 45 in the ball cage 42 is pushed out in the diameter increasing direction by the taper portion 49 of the locking sleeve 46, and the outer tube upper adapter 21 and the like. Pressed against the inner surface.
[0055]
Therefore, the locking sleeve 46 can be fixed by the latch ball 45 at any outer tube assembly position or drill rod position not limited to the concave groove 26, and the slime upper barrel 52 and the slime integrated with the locking sleeve 46 and the hanging body 51 can be fixed. The lower barrel 54 can be fixed in the outer tube assembly 20 left in the ground G.
[0056]
Inside the slime upper barrel 52 fixed in this way, the piston 61 is moved up and down below the position shown in FIG. 1 by the lifting and lowering operation of the sinker bar 35 by the limited winding and unwinding of the cable 31. Let
[0057]
When the piston 61 is raised, the inside of the slime upper barrel 52 and slime lower barrel 54 becomes negative pressure, and the slime accumulated in the drilling hole H passes through the flap valve 58 opened from the slime suction hole 59a, It is sucked into the lower barrel 54 and further into the slime upper barrel 52.
[0058]
Further, when the piston 61 is lowered, the supernatant liquid in the upper part of the slime accommodated in the slime upper barrel 52 is drained to the upper side of the piston body 62 through the ball valve 67 and the drain hole 71.
[0059]
The water drained to the upper side of the piston body 62 gradually rises to the ground through the drainage passage 73, drainage hole 74, drainage passages 75, 76, 77, and 78 by the upward movement of the piston 61 from the next time. Drained.
[0060]
The amount of ascent of the cable 31 is increased by estimating the state in which the inside of the slime upper barrel 52 and slime lower barrel 54 is filled with the slime by the lifting stroke and the number of times of lifting and lowering of the piston body 62 by winding and rewinding the cable 31. From that state shown in FIG. 1, the upper end of the coupling 39 pushes up the release head 38, and the release head 38 opposes the ball cage 42 against the coil spring 48 via the spring case 41. Pulling up and moving the latch ball 45 to the small diameter portion on the upper side of the taper portion 49 of the locking sleeve 46 releases the force that presses the ball cage 42 against the concave groove 26 and the inner surface of the outer tube upper adapter 21. On the other hand, the baler apparatus 30 will be in the state which can raise.
[0061]
In this state, when the cable 31 is further wound and pulled up, the shoulder portion 65 of the piston body 62 engages with the pressed upper portion 64 of the hanging body 51, and the hanging body 51 can be raised. The integrated slime upper barrel 52 and slime lower barrel 54 can also be raised and taken out through the drill rod 10.
[0062]
Thus, after removing the baler device 30 from the inside of the outer tube assembly 20 and recovering the slime, the inner tube assembly (not shown) is again inserted into the outer tube assembly 20 to collect the core. Resume bowling.
[0063]
As described above, the drill rod 10 and the outer tube assembly 20 of the wireline / core barrel are left in the ground G, and the slime upper barrel 52 and the slime lower barrel 54 as slime collection cylinders are moved to the bottom B of the drilling hole H. By using it as it is as a guide means for insertion, the baler device 30 can be easily inserted into and removed from the bottom B of the excavation hole H.
[0064]
At that time, the slime upper barrel 52 and the slime lower barrel 54 are simply fitted to the tip of the outer tube assembly 20 by rewinding the cable 31, and the slime upper barrel 52 and the slime lower barrel 54 are connected to the outer by the latch mechanism 50. It can be automatically fixed in the tube assembly 20.
[0065]
That is, when the hanging body 51 is locked by the landing ring 27 of the outer tube assembly 20 or when the slime upper barrel 52 and the slime lower barrel 54 are locked at the bottom B of the excavation hole H, Thereafter, since only the coupling 39 is lowered to release the locking of the release head 38, the ball cage 42 integrated with the release head 38 and the spring case 41 is connected to the tapered portion 49 of the locking sleeve 46 by the coil spring 48. Since the latch ball 45 is pressed against the concave groove 26 of the outer tube assembly 20 or the inner surface of another position by the taper portion 49, the slime upper barrel 52 and the slime lower barrel 54 are excavated. Arbitrary height in the outer tube assembly 20 according to the slime sedimentation depth (2m to several tens of meters) in the hole H It can be automatically integrated at the position.
[0066]
In this way, the piston 61 of the pump mechanism 70 is reciprocated by the limited stroke winding and unwinding of the cable 31 in the fixed slime upper barrel 52, so that the bottom B of the excavation hole H is formed. The accumulated slime is sucked into the slime lower barrel 54 and further into the slime upper barrel 52 through the flap valve 58 from the slime suction hole 59a. At the same time, the moisture in the slime is removed from the ball valve 67 and the drainage passage 73 in the piston 61. Since it can be drained to the outside through the drain hole 74, the drain passages 75, 76, 77, 78, etc., the slime recovery efficiency is high.
[0067]
When the slime upper barrel 52 and slime lower barrel 54 filled with the slime are collected, the operation of the latch mechanism 50 is canceled, the slime upper barrel 52 and the slime lower only by winding the cable 31 exceeding the limited stroke. The barrel 54 can be pulled up continuously.
[0068]
That is, when the coupling 39 in the state shown in FIG. 1 pushes up the release head 38 due to a large pulling operation of the cable 31, the ball cage 42 resists the coil spring 48 in the axial direction toward the small diameter side of the tapered portion 49. Since the force that pushes the latch ball 45 against the inner side surface of the outer tube assembly 20 is released, the baler device 30 can be pulled up as it is only by pulling the cable 31.
[0069]
【The invention's effect】
According to the first aspect of the present invention, the outer tube assembly of the wireline / core barrel is left on the ground, and is used as it is as a guide means when the slime recovery cylinder is fitted, and the slime recovery cylinder is removed by rewinding the cable. Since the slime recovery cylinder can be fixed and the slime recovery cylinder can be fixed, the slime recovery cylinder can be easily installed in the outer tube assembly and the workability can be improved. Furthermore, the pump mechanism can be driven by winding and unwinding the cable to suck slime into the slime collection cylinder, and the latch mechanism can be released only by winding the cable to lift the slime collection cylinder. Workability related to slime recovery can also be improved.
[0070]
According to the invention of claim 2, when the slime recovery cylinder is locked at the bottom of the excavation hole, the ball cage is axially moved by the spring toward the large diameter side of the taper portion of the locking sleeve, and this taper portion Since the latch ball is pressed against the inner surface of the outer tube assembly and the slime recovery cylinder and the outer tube assembly are integrated, the slime recovery cylinder can be installed at any position in the outer tube assembly according to the slime sediment depth in the drilling hole. Can be fixed automatically. On the other hand, when the release head is operated by the latch release operating body in conjunction with the large pulling operation of the cable, the ball cage moves axially toward the small diameter side of the tapered portion against the spring, and the latch ball is released. Therefore, the slime collection cylinder can be pulled up as it is only by the cable pulling operation.
[0071]
According to the third aspect of the present invention, the reciprocating motion of the piston sucks slime accumulated at the bottom of the excavation hole from the slime suction hole into the slime recovery cylinder through the lower check valve, and the moisture in the slime Since the water is discharged to the outside through the stop valve and the drainage passage, only the slime can be efficiently recovered in the slime recovery cylinder while separating the moisture in the slime.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a slime recovery baler apparatus according to the present invention.
FIG. 2 is a sectional view showing a cable connecting portion of the baler apparatus.
FIG. 3 is a sectional view showing a latch mechanism of the same baler apparatus.
FIG. 4 is a sectional view showing a pump mechanism of the same baler apparatus.
FIG. 5 is a sectional view showing a slime recovery cylinder of the same baler apparatus.
FIG. 6 is a cross-sectional view showing an embodiment of a conventional slime recovery baler apparatus.
[Explanation of symbols]
20 Outer tube assembly
31 Cable
38 Release head
39 Coupling as latch release actuator
42 Ball cage
44 Ball fitting hole
45 Latch ball
46 Locking sleeve
48 Spring
49 Taper
50 Latch mechanism
52 Slime upper barrel as slime collection cylinder
54 Slime lower barrel as slime collection cylinder
58 Flap valve as lower check valve
59a, 59b Slime suction hole
61 piston
67 Ball valve as upper check valve
70 Pump mechanism
75, 76, 77, 78 Drainage passage

Claims (3)

A slime recovery cylinder that is slidably fitted to an outer tube assembly in a coreline wireline core barrel;
A latch mechanism that can be released and fixed to fix the slime recovery cylinder inside the outer tube assembly;
A pump mechanism for sucking slime into the slime recovery cylinder fixed by the latch mechanism;
A slime recovery baler device comprising: a cable for driving the pump mechanism to release the latch mechanism and moving the slime recovery cylinder up and down. The latch mechanism
A locking sleeve provided integrally with the slime recovery cylinder and having a tapered portion in the axial direction;
A ball cage that is fitted to the outer peripheral side of the taper portion of the locking sleeve so as to be axially movable and has a ball fitting hole in a radial direction;
A latch ball that is fitted and held in the ball fitting hole of the ball cage and is freely movable toward and away from the inner surface of the outer tube assembly;
A spring that axially moves the ball cage toward the large diameter side of the tapered portion and presses the latch ball against the inner surface of the outer tube assembly;
A release head that releases the latch ball pressing by axially moving the ball cage toward the small diameter side of the tapered portion against this spring;
2. The slime recovery baler according to claim 1, further comprising a latch release operating body engaged with the release head in conjunction with a cable pulling operation. The pump mechanism
A slime suction hole provided at the bottom of the slime recovery cylinder;
A lower check valve capable of passing upward, provided in the slime suction hole;
A piston slidably liquid-tightly fitted in the upper part of the slime recovery cylinder;
An upper check valve provided inside the piston and capable of upward liquid flow;
3. The slime recovery baler apparatus according to claim 1, further comprising a drainage passage for draining water that has flowed out onto the piston through the upper check valve to the outside.

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