Liquid circulating system and piercing system provided with the same

Abstract

Provided are: a shield portion (50) that covers a portion of a perforated body to be perforated by a cutting tip portion (8) of a drill bit (7) mounted on a perforating device (2); a liquid container (40) that stores a liquid; a liquid supply device (31) that forcibly supplies the liquid stored in the liquid container (40) to the cutting tip portion (8); and a liquid recovery device (35) that forcibly recovers a suspension liquid from a portion covered by the shield portion (50) and returns the suspension liquid to the liquid container (40). Thus, a liquid circulation system (30) that can circulate while appropriately suppressing backflow of the suspension liquid is provided.

Description

TECHNICAL FIELD

[0001] The present application relates to a liquid circulating system and a perforating system provided with the same. BACKGROUND

[0002] In the past, in a perforating device for opening a hole in a concrete and a ceramic tile or the like, there is one which supplies a liquid from a tip of a drill bit to a perforated portion of a perforated body. As such a prior art, there is, for example, a portable circulating filter device which has a liquid supply device for supplying a liquid to a tip of a perforating device, and a dust separation device which separates dust of a perforated body from a suspension liquid mixed with a liquid supplied from the tip and dust (chips) of a perforated portion (for example, see Patent Document 1).

[0003] In the portable circulating filter device of Patent Document 1, the suspension liquid discharged from the perforated portion of the perforated body is introduced into a filter in the portable circulating filter device via a suspension liquid recovery portion and a drain pipe. In the portable circulating filter device, the dust of the perforated body is separated from the suspension liquid by the filter, and a liquid for supplying to the perforating device is obtained.

[0004] Prior Art Documents:

[0005] Patent Documents:

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2002-337136 SUMMARY

[0007] Problems to be Solved by the Invention:

[0008] However, in the portable circulating filter device mentioned in Patent Document 1, the suspension liquid discharged from the perforated portion of the perforated body is guided to the separation device from the suspension liquid recovery portion via the drain pipe. At this time, however, depending on the amount of the suspension liquid discharged, there is a concern that the suspension liquid discharged to the drain pipe can flow back to the suspension liquid recovery portion.

[0009] Therefore, an object of the present application is to provide a liquid circulating system which can appropriately suppress the backflow of a suspension liquid and circulate the same, and a perforating system provided with the same.

[0010] Means for Solving the Problems:

[0011] To achieve the above object, a liquid circulation system according to the present application includes: a shield portion that covers a perforated portion of a perforated body perforated by a tip portion of a drill bit mounted on a perforating device; a liquid container that stores a liquid; a liquid supply device that forcibly supplies the liquid stored in the liquid container to the tip portion; and a liquid recovery device that forcibly recovers a suspension liquid from a portion shielded by the shield portion and returns the suspension liquid to the liquid container. The "suspension liquid" in the specification and claims refers to a liquid that is supplied to the tip portion and mixed with the perforated body perforated by the tip portion.

[0012] According to this configuration, the perforated portion of the perforated body perforated by the tip portion of the drill bit mounted on the perforating device is covered by the shield portion, the liquid is forcibly supplied from the liquid supply device to the tip portion, and the suspension liquid is forcibly recovered from the portion shielded by the shield portion by the liquid recovery device, so that backflow of the suspension liquid can be appropriately suppressed.

[0013] Further, the liquid supply device can include a first tube pump that forcibly supplies a portion of the liquid stored in the liquid container to the tip portion, the liquid recovery device can include a second tube pump that forcibly recovers the suspension liquid from the portion shielded by the shield portion to the liquid container, and a switch that causes the first tube pump and the second tube pump to operate / stop in conjunction with each other can be provided. If configured as above, the forced supply of the liquid by the first tube pump and the forced recovery of the suspension liquid by the second tube pump can be performed in conjunction with each other by the switch, and circulation of the liquid can be appropriately achieved. Furthermore, the circulation of the liquid uses the tube pumps, so that even the suspension liquid into which dust generated by the perforation of the tip portion is mixed can be appropriately transported.

[0014] Further, the liquid recovery flow path between the shield portion and the second tube pump can further include a filter. If configured as above, even in a work in which large pieces can be mixed in the dust generated by the perforation of the tip portion, the large pieces can be removed by the filter.

[0015] Further, the liquid recovery flow path between the shield portion and the filter can be formed to have a thickness corresponding to the pieces of the perforated body discharged from the shield portion. If configured as above, even in a work in which large pieces can be mixed in the dust generated by the perforation of the tip portion, the large pieces can flow smoothly in the liquid recovery flow path from the shield portion to the filter and be removed by the filter.

[0016] Further, the shield portion can include a sealing member that contacts the perforated body around the perforated portion. If configured as above, leakage of the liquid forcibly supplied by the liquid supply device to the tip portion from between the shield portion and the perforated body can be appropriately suppressed.

[0017] On the other hand, the perforation system according to the present invention includes any of the aforementioned liquid circulation systems, and the perforation device has a liquid supply mechanism for opening and closing the supply flow path of the liquid supplied by the liquid supply device and a force application mechanism for applying force to the shielding portion forward.

[0018] According to this structure, liquid can be forcibly supplied to the blade tip via a liquid supply device of a liquid circulation system, and the suspension can be forcibly recovered from the perforation section by a liquid recovery device and stored in a liquid container. The suspension in the liquid container can be circulated as liquid supplied to the blade tip of the perforating device via a separation device. Furthermore, while the shielding part is appropriately pressed against the body being perforated by a force-applying mechanism, the liquid supply path is opened by the liquid supply mechanism and liquid is supplied to the blade tip.

[0019] Alternatively, the liquid supply mechanism may have a sliding member that moves rearward of the piercing device by a predetermined amount together with the drill bit, such that the sliding member moves by the predetermined amount to open the supply path. With this configuration, when the drill bit is pressed against the workpiece to be pierced for piercing operations through the piercing device, the sliding member moves rearward of the piercing device by a predetermined amount together with the drill bit, opening the liquid supply path of the liquid supply mechanism. Therefore, liquid can be supplied to the tip of the drill bit in conjunction with all piercing operations.

[0020] Alternatively, the drill bit's cutting tip can be positioned with a predetermined clearance from the front surface of the shielding portion toward the liquid supply mechanism, and the predetermined amount of movement of the sliding member of the liquid supply mechanism is set to be less than the clearance. With this configuration, after the shielding portion is pressed against the body to be pierced for drilling operations, the liquid supply path is opened, allowing liquid to be supplied and drilling operations to be performed while the shielding portion is pressed against the body to be pierced with appropriate force.

[0021] Alternatively, the force-applying mechanism may include: a guide portion extending from the piercing device to the shielding portion; a sliding portion that fixes the shielding portion at its front end and slides guided by the guide portion; a force-applying portion that applies force forward to the sliding portion along the guide portion; and a holding portion that holds the sliding portion in a predetermined position. With this configuration, the shielding portion, fixed at the front end of the sliding portion, is force-applied forward by the force-applying portion along the guide portion extending from the piercing device to the shielding portion. Therefore, piercing operations can be performed using a drill bit while the shielding portion is pressed against the body to be pierced.

[0022] Invention effects:

[0023] According to the present invention, a liquid circulation system capable of appropriately suppressing backflow and circulating a suspension, and a perforated system having the liquid circulation system, can be provided. Attached Figure Description

[0024] Figure 1 This is a schematic diagram showing the overall structure of the first perforation system according to the first embodiment of the present invention;

[0025] Figure 2 yes Figure 1 The top view of the pipe pump shown;

[0026] Figure 3 It is shown Figure 1 A schematic cross-sectional view of the liquid supply mechanism of the perforation device in the first perforation system shown;

[0027] Figure 4 It is shown Figure 1 A diagram of the shielding portion of the first perforation system is shown, wherein (a) is a schematic view viewed from the direction of the perforation device, and (b) is a central longitudinal sectional view.

[0028] Figure 5 Yes Figure 4 A top-view schematic diagram of the force-applying mechanism that applies force from the shielding part to the perforated body;

[0029] Figure 6 It is shown Figure 3 The diagram shows the operation of the liquid supply mechanism, where (a) is a schematic cross-sectional view before operation and (b) is a schematic cross-sectional view during operation.

[0030] Figure 7 This is a schematic diagram illustrating the overall structure of the second perforation system according to the second embodiment of the present invention;

[0031] Figure 8 It is shown Figure 7 An enlarged view of a portion of the strainers in the liquid recovery flow path of the second perforated system shown. Detailed Implementation

[0032] Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. In the following embodiments, a perforation system 1, 70 is used as an example to describe a hole of a predetermined depth formed in a body 100 (e.g., a concrete wall, a ceramic tile wall, etc.) by the cutting tip 8 of a drill bit 7 mounted on a perforation device 2. Furthermore, water L is used as an example of a liquid in the description. The perforation system 1, 70 is not limited to the following embodiment, and various structures can be modified without impairing the essence of the present invention. Also, the concepts of front-back direction and relative to the front-back direction in this specification and claims are different. Figure 1 The perforation device 2 shown aligns the concept of the front-to-back direction of the blade tip 8 with the front direction.

[0033] (First perforation system of the first embodiment)

[0034] Figure 1 This is a schematic diagram showing the overall structure of the first perforation system 1 according to the first embodiment. The first perforation system 1 of this embodiment includes: a perforation device 2 for performing perforation operations; a shielding portion 50 covering the perforated portion 101 of the body 100 being perforated by the tip 8 of a drill bit 7 (cutting tool) mounted on the perforation device 2; and a liquid circulation system 30 for circulating water L supplied to the tip 8 of the drill bit 7. The shielding portion 50 is provided with a force-applying mechanism 20 of the perforation device 2 applying force forward.

[0035] The drilling device 2 includes an electric drill 3, a liquid supply mechanism 10 mounted on the electric drill 3, and a drill bit 7 mounted on the liquid supply mechanism 10. The electric drill 3 has a drill body 4, an operating part 5 that drives the drill body 4, and a holding mechanism 6 located at the tip of the drill body 4 for holding the shank 12 of the liquid supply mechanism 10. The liquid supply mechanism 10 has a rotating part 11 that holds and rotates the base of the drill bit 7 in its central portion, and a liquid supply part 13 serving as a water supply part surrounding it. Details of the liquid supply mechanism 10 will be described later.

[0036] The piercing device 2 rotates the holding mechanism 6 by rotating a motor (not shown) located inside the drill body 4, and the drill bit 7 rotates by rotating part 11 of the liquid supply mechanism 10. The tip 8 of the rotating drill bit 7 presses against the body 100 to be pierced, thereby performing the piercing operation. During this piercing operation, water L is supplied from the liquid supply mechanism 10 to the tip 8 of the drill bit 7. Water L is supplied from the tip 8 to the body 100 to be pierced, thereby reducing friction and heat generation between the tip 8 and the body 100 during piercing.

[0037] (Liquid circulation system)

[0038] Figure 2 yes Figure 1 The top view of the tubular pumps 32 and 36 is shown. Figure 1 , 2As shown, the liquid circulation system 30 of this embodiment includes a liquid supply device 31 that forcibly supplies water L from the liquid container 40 to the cutting tip 8 through the liquid supply mechanism 10 of the perforation device 2. It also includes a liquid recovery device 35 that forcibly recovers a suspension S of dust C (including debris generated from perforating the perforated body 100) mixed with water L from the shielding part 50 back to the liquid container 40. The liquid container 40, for example, has an internal container 41 capable of storing approximately 4 to 5 liters of water L. The liquid supply device 31 of this embodiment includes a first pipe pump 32. The liquid recovery device 35 includes a second pipe pump 36. The first pipe pump 32 and the second pipe pump 36 of this embodiment are a combined double pipe pump. Furthermore, the interior of the liquid container 40 includes a separation device 45 for separating larger dust C from the perforated body 100 from the suspension S recovered from the liquid recovery device 35.

[0039] (Liquid supply device and liquid recovery device)

[0040] like Figure 1 , 2 As shown, in this embodiment, the dual-pipe pump is structured such that the water L supply side and the suspension S recovery side are driven by the same drive shaft 39. The dual-pipe pump can utilize known structures. Alternatively, the first pipe pump 32 and the second pipe pump 36 can be different structures, or other known structures can be utilized.

[0041] The liquid supply device 31 has: a first supply flow path 33 for drawing water L from a liquid container 40 for storing water L via a first pipe pump 32; and a second supply flow path 34 for supplying the water L from the first pipe pump 32 to the liquid supply mechanism 10 of the perforating device 2. The upstream end of the first supply flow path 33 is connected to a separation device 45 inside the liquid container 40.

[0042] The liquid recovery device 35 has: a first liquid recovery flow path 37 forcibly recovering the suspension S from the shielding section 50 through the second pipe pump 36; and a second liquid recovery flow path 38 for conveying the suspension S from the second pipe pump 36 to the liquid container 40.

[0043] The first tube pump 32 and the second tube pump 36 are configured such that a roller (not shown) rotating via a drive shaft 39 compresses the tube inside the pump, creating a vacuum and thus introducing liquid into the tube. Since only the tube of the first tube pump 32 and the second tube pump 36 is in contact with the liquid, even a suspension S containing dust C can be properly transported. The first tube pump 32, for example, can utilize a structure capable of supplying approximately 100-150 ml of water L to the liquid supply mechanism 10 of the perforating device 2 within one minute.

[0044] (Separation device)

[0045] In this embodiment, the separation device 45 floats on the water L stored in the inner container 41 within the liquid container 40. The separation device 45 includes: a float 46 that generates buoyancy at least near the surface of the suspension S; and a filter 47 that moves integrally with the float 46 within the suspension S and is used to separate larger dust particles C from the suspension S. The separation device 45 is installed at the upstream end of the first supply flow path 33. Through the separation device 45, water L is drawn from the top of the suspension S stored in the liquid container 40 after the dust particles C and the like have settled due to their own weight. The larger dust particles C (larger dust particles C, for example, about 1 mm) that cannot pass between the sliding member 17 and the rotating part 11 of the liquid supply mechanism 10, or between the inclined surface 17a and the sealing member 15 are removed by the filter 47.

[0046] The separation device 45 may also be a filter (not shown) for separating dust C installed inside the inner container 41 of the liquid container 40. If no large dust C is mixed in the water L supplied from the liquid container 40 to the blade tip 8 of the perforating device 2, the separation device 45 may not be required. The separation device 45 is not limited to these structures.

[0047] (Liquid supply mechanism)

[0048] Figure 3 It is shown Figure 1 The diagram shows a schematic cross-sectional view of the liquid supply mechanism 10 of the perforation device 2 in the first perforation system 1. The liquid supply mechanism 10 of this embodiment includes a rotating portion 11 having a handle 12 held by the holding mechanism 6 of the electric drill 3, and a liquid supply portion 13 disposed around the rotating portion 11. The liquid supply portion 13 can be kept stationary by a bearing 14 disposed between it and the rotating portion 11. The liquid supply portion 13 is connected to a second supply flow path 34. The supply flow path 13a disposed inside the liquid supply portion 13 communicates with the supply flow path 11a disposed in the rotating portion 11.

[0049] The front of the rotating part 11 is provided with a drill bit mounting part 16 that holds the base of the drill bit 7. The base of the drill bit 7 is inserted and held in the drill bit mounting part 16. The mechanism for holding the base of the drill bit 7 is not shown in the figure. The mechanism for holding the base of the drill bit 7 can use known technology.

[0050] The rotating part 11 is equipped with a sliding member 17 that can move in the front-rear direction by a predetermined amount while in contact with the base of the drill bit 7. The sliding member 17 is subjected to a forward force by a force-applying member 18 (spring) located inside the rotating part 11. The rear of the sliding member 17 has an enlarged inclined surface 17a, which abuts against a sealing member 15 located at a predetermined position on the rotating part 11 by the force applied by the force-applying member 18. The front of the sliding member 17 is sealed by a sealing member 19 located between it and the drill bit mounting part 16. O-rings can be used for the sealing members 15 and 19. Within a predetermined gap A between the sliding member 17 and the rotating part 11, the sliding member 17 can slide rearward against the force applied by the force-applying member 18.

[0051] The space 11b between the sliding member 17 and the rotating part 11 is connected to the liquid supply hole 9 of the drill bit 7 through the supply flow path 17b provided in the sliding member 17. The liquid supply hole 9 extends from the base of the drill bit 7 to the tip 8.

[0052] As shown in the figure, when the sliding member 17 is subjected to a forward force by the force-applying member 18, the inclined surface 17a abuts against the sealing member 15, and the supply flow path 11a and the space 11b become closed. In this state, the water L supplied from the second supply flow path 34 to the liquid supply section 13 does not flow from the supply flow path 11a to the space 11b.

[0053] On the other hand, when the sliding member 17 is pressed from the direction of the drill bit 7 (described later) Figure 6 (b) In this state, the sliding member 17 moves backward within a specified gap A against the applied force of the force-applying member 18. In this state, the inclined surface 17a moves away from the sealing member 15, and the supply flow path 11a and the space 11b become connected, and the water L supplied from the second supply flow path 34 flows from the supply flow path 11a to the space 11b.

[0054] Therefore, with the drill bit 7 installed in the drill bit mounting section 16, the water L supplied to the liquid supply mechanism 10 is stopped, and the drill bit 7 is pressed backward, so that the water L supplied to the liquid supply mechanism 10 flows from the tip 8 to the perforation section 101 through the liquid supply hole 9 of the drill bit 7. Figure 1 )supply.

[0055] Furthermore, in this embodiment, the clearance A of the sliding member 17 moving by a predetermined amount in the forward and backward direction is smaller than the configuration clearance B from the front surface of the shielding portion 50 in the state where the force-applying mechanism 20 applies force forward to the cutting tip portion 8 of the drill bit 7. Figure 1 , Figure 6(b)). Thus, after the front surface of the shielding portion 50 comes into contact with the perforated body 100, the clearance B is pressed into the clearance A by a predetermined amount, and the inclined surface 17a of the sliding member 17 moves away from the sealing member 15. Therefore, with the sealing member 58 of the shielding portion 50 pressed against the perforated body 100, water L is supplied from the tip portion 8. Figure 6 (b) can suppress water L from leaking between the shielding part 50 and the perforated body 100. Furthermore, the relationship between the specified gap A and the configuration gap B is an example and is not limited to this embodiment.

[0056] (Shelter area)

[0057] Figure 4 It is shown Figure 1 The diagram shows the shielding portion 50 of the first perforation system 1, where (a) is a schematic view viewed from the direction of the perforation device 2, and (b) is a central longitudinal sectional view. In this embodiment, the main body 51 of the shielding portion 50 is formed to be transversely long, and connecting portions 52 are provided at both ends. The connecting portions 52 and... Figure 5 The sliding part 25 of the force-applying mechanism 20 shown is connected. A guide member 53 is provided in the central part of the main body 51 to guide the front part of the drill bit 7 in the front-rear direction. The guide member 53 has a guide part 54 for the drill bit 7 in the central part and a space part 55 in the front part. A sealing member 56 is provided between the guide member 53 and the main body 51 to prevent leakage of the suspension S from between them. An O-ring can be used for the sealing member 56.

[0058] Furthermore, the front surface of the main body 51 is provided with a sealing member 58 that contacts the perforated body 100. The sealing member 58 is configured to seal the area around the space 55 and the area around the perforated portion 101. The sealing member 58 can be made of sponge, rubber, or the like.

[0059] Furthermore, the lower part of the main body 51 is provided with a recovery hole 57 leading from the space 55 to the outside. The recovery hole 57 is connected to the first liquid recovery flow path 37. The suspension S in the space 55 is recovered from the recovery hole 57 to the first liquid recovery flow path 37. Also, the large-diameter recovery hole 57A shown by the double-dotted line is described later. Figure 7 An example of a large-diameter recovery orifice 57A in the second perforation system 70 is shown. This large-diameter recovery orifice 57A is connected to a large-diameter upstream first liquid recovery flow path 37A, which will be described later.

[0060] (Force-applying mechanism)

[0061] Figure 5 Yes Figure 4 A top view of the force-applying mechanism 20 that applies force from the shielding part 50 to the perforated body 100. Figure 5It is shown as a half-sectional view. The force-applying mechanism 20 of this embodiment has a main body 21 mounted on the liquid supply mechanism 10 of the perforating device 2. The main body 21 is fixed to the outer surface of the liquid supply mechanism 10.

[0062] The main body 21 has two guide portions 23 extending in the front-rear direction at the left and right positions of the liquid supply mechanism 10, and a sliding portion 25 that slides along the guide portions 23 in the front-rear direction. The guide portions 23 are inserted into the holes of the main body 21, and are fixed to the main body 21 by fixing bolts 22 at the left and right positions. The sliding portion 25 is subjected to a forward force by a force-applying spring 24 (force-applying part) provided inside the guide portion 23. The sliding portion 25 stops sliding forward at a predetermined position shown in the figure and is held by a retaining part 26 (segment part) provided at the end of the guide portion 23. The sliding portion 25 can slide backward against the force applied by the force-applying spring 24 from the state shown in the figure.

[0063] A shielding part 50 is fixed to the tip of the sliding part 25. As a result, the shielding part 50 can move backward together with the sliding part 25 against the applied force of the force-applying spring 24.

[0064] (An example of a perforation operation)

[0065] Figure 6 It is shown Figure 5 The diagram shows the operation of the shielding part 50 and the force-applying mechanism 20 during operation, where (a) is a schematic cross-sectional view before operation and (b) is a schematic cross-sectional view during operation. Based on Figure 1 The figures illustrate an example of using the first perforation system 1 described above to perform a perforation operation on the body 100 to be perforated.

[0066] First, such as Figure 1 As shown, the structure connecting the first perforation system 1 is shown. Then, the switches of the pipe pumps 32 and 36 are turned on and operated, and the tip 8 of the perforation device 2 is positioned on the perforation portion 101 of the body to be perforated 100. In this state, the first pipe pump 32 of the liquid supply device 31 attempts to supply water L from the liquid container 40 to the liquid supply mechanism 10 of the perforation device 2. However, as... Figure 6 As shown in (a), the sliding member 17 of the liquid supply mechanism 10 abuts against the sealing member 15 to close the tip of the supply flow path 11a, so water L is supplied from the liquid container 40. The second pipe pump 36 of the liquid recovery device 35 is changed from the space 55 of the shielding part 50 ( Figure 4 (b)) The state of air intake. In this state, the sealing member 58 provided in the shielding part 50 of the perforation device 2 comes into contact with the perforated part 101 of the perforated body 100.

[0067] Then, as Figure 6As shown in (b), the drill bit 7 is rotated by operating the operating part 5 located on the drill body 4, and at the same time, the cutting tip 8 of the drill bit 7 presses against the body 100 to be pierced. As a result, the shielding part 50 is pressed against the body 100 to be pierced by the force-applying mechanism 20 with an appropriate force. Furthermore, as the cutting tip 8 of the drill bit 7 presses against the body 100 to be pierced, the base of the drill bit 7 causes the sliding member 17 to move rearward within a predetermined gap A against the force applied by the force-applying member 18.

[0068] Therefore, the inclined surface 17a of the sliding member 17 leaves the sealing member 15, and the supply flow path 13a of the liquid supply section 13 communicates with the liquid supply hole 9 of the drill bit 7 via the supply flow path 11a of the rotating section 11, the space 11b, and the supply flow path 17b of the sliding member 17. Thus, when the cutting tip 8 of the drill bit 7 pierces the pierced body 100, the water L supplied from the liquid supply device 31 to the liquid supply mechanism 10 is supplied from the cutting tip 8 of the drill bit 7 to the piercing portion 101. Furthermore, the suspended liquid S in the space 55 of the shielding section 50 is forcibly recovered to the liquid container 40 via the second pipe pump 36 of the liquid recovery device 35 through the first liquid recovery flow path 37 and the second liquid recovery flow path 38.

[0069] In this way, the drill bit 7 rotates and presses the cutting tip 8 forward against the body 100 to be pierced, thereby piercing the perforation portion 101 of the body 100 by the cutting tip 8. Furthermore, during this piercing operation, water L from the liquid container 40 is forcibly supplied from the cutting tip 8 of the piercing device 2 to the perforation portion 101 via the first pipe pump 32, and a suspension S mixed with dust C from the body 100 being cut by the cutting tip 8 is forcibly recovered from the shielding part 50 through the first liquid recovery flow path 37 and the second liquid recovery flow path 38 back to the liquid container 40.

[0070] Furthermore, the larger dust particles C in the suspension S recovered and stored in the liquid container 40 by the liquid recovery device 35 settle down. The water L in the upper part of the liquid container 40, after the dust particles C have been removed by the filter 47, is supplied to the cutting tip 8 again through the first liquid supply path 33 and the second liquid supply path 34. That is, the water L supplied from the suspension S stored in the liquid container 40 to the cutting tip 8 of the drill bit 7 installed in the perforating device 2 is obtained from the liquid surface and its vicinity in the suspension S with less dust C, through the filter 47 of the separation device 45, so that the water L with less dust C mixed in circulates to the cutting tip 8 of the perforating device 2. Moreover, the circulation of water L uses pipe pumps 32 and 36, so even if some dust C is mixed in, the water L can be circulated properly.

[0071] Therefore, according to the first perforation system 1 described above, the backflow circulation can be appropriately suppressed by the appropriate supply of water L to the blade tip 8 and the forced recovery of the suspension S through the liquid circulation system 30, while the perforation device 2 performs appropriate perforation operations on the body 100 to be perforated.

[0072] Furthermore, according to the first perforation system 1 described above, the suspension S is forcibly recovered from the shielding portion 50 covering the perforation portion 101, so proper circulation of water L can be achieved even in downward perforation operations. Therefore, perforation operations in various orientations can be performed appropriately.

[0073] (Second perforation system of the second embodiment)

[0074] Figure 7 This is a schematic diagram showing the overall structure of the second perforation system 70 according to the second embodiment. Figure 8 It is shown Figure 7 This is an enlarged view of a partial cross-section of a portion of the filter 80 included in the liquid recovery flow path of the second perforation system 70. Furthermore, the structure within a portion of the first liquid recovery flow path 37 between the shielding part 50 and the second pipe pump 36 in the second perforation system 70 differs from that in the first perforation system 1 described above. Therefore, the description of the second perforation system 70 only describes the parts that differ from the first perforation system 1; structures identical to those in the first perforation system 1 are labeled with the same symbols, and their descriptions are omitted. The second perforation system 70 can be used in operations where the dust C generated from perforating the blade tip 8 may contain relatively large fragments D (e.g., approximately 3-5 mm).

[0075] like Figure 7 As shown, the second perforation system 70 includes a filter 80 between the upstream first liquid recovery flow path 37A and the downstream first liquid recovery flow path 37B between the shielding part 50 and the second pipe pump 36. The upstream first liquid recovery flow path 37A between the shielding part 50 and the filter 80 uses a large-diameter structure, while the downstream first liquid recovery flow path 37B between the filter 80 and the second pipe pump 36 uses a structure with the same diameter as other flow paths (second liquid recovery flow path 38). The shielding part 50 connecting to the upstream first liquid recovery flow path 37A is provided with a large-diameter recovery hole 57A corresponding to the diameter of the upstream first liquid recovery flow path 37A. Figure 4 (b)). For example, the diameter of the downstream first liquid recovery flow path 37B can be about 6-8 mm, and the diameter of the upstream first liquid recovery flow path 37A can be about 10-12 mm. The diameter of the upstream first liquid recovery flow path 37A can be about 1.2 to 2 times the diameter of the downstream first liquid recovery flow path 37B, preferably about 1.5 times. The diameter of the upstream first liquid recovery flow path 37A and the large-diameter recovery hole 57A of the shielding part 50 are determined based on the larger fragments D ( generated by the perforation of the blade tip 8). Figure 8 You can set the size by adjusting the value of the '(').

[0076] like Figure 8As shown, the filter 80 has a cylindrical filter body 81, an upstream filter inlet 82 connected to an upstream first liquid recovery flow path 37A, and a downstream filter outlet 83 connected to a downstream first liquid recovery flow path 37B. In this embodiment, the filter 80 has a downstream-inclined filter placement section 84 at the lower part of the filter body 81, and this filter placement section 84 has a cylindrical filter 85. The lower end of the filter 85 is blocked by a sealing member 86 that blocks the lower end of the filter placement section 84. The central part of the cylindrical filter 85 communicates with the upstream side, and the outer periphery of the cylindrical filter communicates with the downstream side. The filter 85 can use a mesh metal mesh or the like, corresponding to the size of the larger fragments D it collects.

[0077] According to the filter 80, the suspension S entering the filter body 81 from the upstream first liquid recovery flow path 37A enters the filter 85 from the center and exits from the periphery, flowing to the downstream first liquid recovery flow path 37B. Therefore, larger fragments D mixed in the suspension S are captured by the filter 85. Typically, large amounts of larger fragments D are not generated during a day's operation, so the larger fragments D accumulate in the filter 85, allowing for operation throughout the day without interruption. The larger fragments D captured by the filter 85 can be discharged by disassembling the sealing member 86. Furthermore, the filter 80 of this embodiment is just one example; other types of filters may also be used, and the filter 80 is not limited to this embodiment.

[0078] Furthermore, the first perforation system 1 and the second perforation system 70 of the above-described embodiments are equipped with a bogie 60 for transporting the liquid container 40 and the first pipe pump 32 and the second pipe pump 36. This allows the entire system to be easily moved to the location where perforation work is performed. Instead of the bogie 60, a canvas bag or shoulder bag can also be used to easily move the entire system. Furthermore, if the drill 3 of the perforation device 2 has a built-in battery, it can be easily moved while the liquid container 40 is loaded on the bogie 60, making the location for perforation work easier, and allowing perforation work to be performed appropriately even in relatively confined work areas. The drill 3 of the perforation device 2 is not limited to a structure with a built-in battery. The drill 3 can also be a structure powered by a power cord.

[0079] (Other variations)

[0080] The above embodiment describes an example in which a force-applying mechanism 20 is provided on the liquid supply mechanism 10 mounted on the electric drill 3 to apply force from the shielding part 50 to the body 100 to be pierced, but the force-applying mechanism 20 may also be provided on the drill body 4.

[0081] In the above embodiments, water L is described as an example of a liquid, but the liquid may not be water L. As long as it is a liquid that can reduce the friction between the tip 8 and the body 100 being pierced and can cool the tip 8 which is heated by the friction between the tip 8 and the body 100 being pierced, there is no particular limitation.

[0082] Furthermore, the above-described embodiments are merely one example, and those skilled in the art will understand various modifications and other embodiments of the present invention. Therefore, the above description should only be interpreted as illustrative, provided for the purpose of teaching those skilled in the art the optimal form for carrying out the present invention. Substantial changes to its structure and / or function may be made without departing from the spirit of the invention.

[0083] Symbol explanation:

[0084] 1 First perforation system

[0085] 2. Perforation device

[0086] 7 Drill Bits

[0087] 8. Blade tip

[0088] 9 Liquid supply port

[0089] 10. Liquid supply mechanism

[0090] 11 Rotating part

[0091] 13 Liquid Supply Department

[0092] 15 Sealing components

[0093] 16 Drill bit installation section

[0094] 17. Force-applying components

[0095] 18 Sealing components

[0096] 20. Force-applying mechanism

[0097] 23 Guiding Section

[0098] 24 Force-applying spring (force-applying part)

[0099] 25 Sliding part

[0100] 30 Liquid Circulation System

[0101] 31 Liquid supply device

[0102] 32 First Pipe Pump

[0103] 33 First Liquid Supply Flow Path

[0104] 34 Second Liquid Supply Flow Path

[0105] 35 Liquid recovery device

[0106] 36 Second Pipe Pump

[0107] 37 First Liquid Recovery Flow Path

[0108] 37A First Liquid Recovery Flow Path

[0109] 37B First Liquid Recovery Flow Path

[0110] 38 Second Liquid Recovery Flow Path

[0111] 40 Liquid containers

[0112] 45 Separation device

[0113] 46. ​​Float

[0114] 47. Filters (strainers)

[0115] 50. Shelter

[0116] 54 Guidance Department

[0117] 55 Space Department

[0118] 56 Sealing components

[0119] 57 Recycling Hole

[0120] 57A Recycling Hole

[0121] 58 Sealing components

[0122] 70 Second perforation system

[0123] 80 filters (strainers)

[0124] 83 Filters

[0125] 84. Enclosed components

[0126] 100 Perforated bodies

[0127] 101 Perforated section

[0128] A. Specified gap (specified amount)

[0129] B Configuration Gap

[0130] L water (liquid)

[0131] S suspension

[0132] C dust

[0133] D. Larger fragments.

Claims

1. A liquid circulation system, characterized in that, have: A shielding part that covers the perforated portion of the body being perforated, the perforated portion being perforated by the tip of a drill bit mounted on a perforating device; A liquid container for storing liquids; A liquid supply device that forcibly supplies the liquid stored in the liquid container to the tip of the blade; and A liquid recovery device that forcibly recovers the suspension from the portion shielded by the shielding part and returns it to the liquid container. The liquid supply device has a first tubular pump that forcibly supplies a portion of the liquid stored in the liquid container to the blade tip. The liquid recovery device has a second pipe pump that forcibly recovers the suspension from the portion covered by the shielding part to the liquid container. It has a switch that enables the first and second pipe pumps to operate / stop in tandem. The first pipe pump and the second pipe pump are driven by the same drive shaft.

2. The liquid circulation system according to claim 1, characterized in that, The liquid recovery path between the shielding section and the second pipe pump also includes a filter.

3. The liquid circulation system according to claim 2, characterized in that, The liquid recovery flow path between the shield and the filter is formed to correspond to the size of the fragments of the perforated body discharged from the shield.

4. The liquid circulation system according to any one of claims 1 to 3, characterized in that, The shielding portion has a sealing member around the perforated portion that contacts the perforated body.

5. A perforation system, characterized in that, The liquid circulation system comprises any one of claims 1 to 4. The perforating device has a liquid supply mechanism for opening and closing the supply path of the liquid supplied by the liquid supply device and a force application mechanism for applying force forward to the shielding part.

6. The perforation system according to claim 5, characterized in that, The liquid supply mechanism has a sliding member that moves with the drill bit toward the rear of the perforation device by a predetermined amount, and is configured such that the sliding member moves by the predetermined amount, thereby opening the supply flow path.

7. The perforation system according to claim 6, characterized in that, The cutting tip of the drill bit is positioned with a predetermined clearance from the front surface of the shield towards the liquid supply mechanism, and the predetermined amount of movement of the sliding member of the liquid supply mechanism is set to be less than the clearance.

8. The perforation system according to any one of claims 5 to 7, characterized in that, The force-applying mechanism includes: a guide portion extending from the perforating device to the shielding portion; a sliding portion that fixes the shielding portion at its front end and slides under the guidance of the guide portion; a force-applying portion that applies force forward to the sliding portion along the guide portion; and a holding portion that holds the sliding portion in a predetermined position.

Images