Cleaning device and method for a drilled preform

Abstract

This invention relates to the field of preform manufacturing technology, and provides a cleaning device and method for drilled preforms. The cleaning device for drilled preforms includes: a cleaning tank, a clamping mechanism, and a driving component. The cleaning tank has a receiving cavity; the clamping mechanism is disposed within the receiving cavity; the clamping mechanism includes a rotating component and a clamping component, the clamping component being disposed on the outer wall of the rotating component, and the clamping component is used to detachably clamp the drilled preform, which is in an inclined state; the driving component is connected to the rotating component and is used to drive the rotating component to rotate around its own axis, so that the drilled preform is in a first state or a second state; in the first state, the drilled preform is located below the liquid surface, with the drilled end higher than the closed end; in the second state, the drilled preform is located above the liquid surface, with the drilled end lower than the closed end. This device can automatically complete the filling, cleaning, and drainage of liquid in the internal channels of the drilled preform, reducing manual operation and improving operational safety; it also has high cleaning efficiency, meeting production requirements.

Description

Technical Field

[0001] This invention relates to the field of preform manufacturing technology, and in particular to a cleaning device and method for drilled preforms. Background Technology

[0002] In the optical fiber industry's production process, after drilling is completed, auxiliary tubes for subsequent processes need to be fused to both ends of the preform. Specifically, a hollow glass tube is fused to one end as a tail shank, and a solid glass rod is fused to the other end to form a semi-finished product. This semi-finished product needs to be cleaned with hydrofluoric acid to remove processing contaminants from its outer surface and internal channels.

[0003] However, because the solid glass rod after fusion seals one end of the pre-drilled rod, and the length of one end of the fused hollow glass tube (i.e. the tail end) is usually greater than 1 meter and the diameter is less than 80 millimeters, the overall structure is slender.

[0004] Under this structure, the existing cleaning operation relies entirely on manual labor, and the specific process is as follows: For cleaning the outer surface, the operator immerses the semi-finished product entirely in a container filled with hydrofluoric acid for cleaning, and then rinses and dilutes it with pure water. For cleaning the internal channels, the operator needs to inject hydrofluoric acid into the internal channels of the drilled preform, let it stand for cleaning, and then turn the drilled preform around to pour out the hydrofluoric acid. After the hydrofluoric acid is drained, the above injection and pouring steps need to be repeated, and pure water is used for multiple circulation cleanings to remove residual hydrofluoric acid in the channels.

[0005] Hydrofluoric acid is extremely corrosive and toxic, causing severe irritation and corrosion to the skin, eyes, and respiratory mucous membranes. Even with protective gear, operators still face the risk of chemical splashes and leaks during repeated handling and flipping of slender workpieces, making it difficult to fundamentally guarantee personnel safety. For slender workpieces with one closed end, manual internal filling, emptying, and multiple fluid changes are extremely tedious, labor-intensive, and the restricted movement due to protective gear further slows down the cleaning process. Summary of the Invention

[0006] This invention provides a cleaning device and method for drilled preforms to solve the problems of safety hazards, low efficiency, and inability to meet production needs caused by the manual cleaning of drilled preforms in the prior art.

[0007] This invention provides a cleaning device for a drilled preform. The drilled preform has a closed end and a drilled end. The cleaning device includes: a cleaning tank with a receiving cavity for containing cleaning fluid and water; a clamping mechanism disposed within the receiving cavity; the clamping mechanism includes a rotating component and a clamping component, the clamping component being disposed on the outer side wall of the rotating component, the clamping component being used to detachably clamp the drilled preform, the drilled preform being in an inclined state; and a driving component connected to the rotating component for driving the rotating component to rotate around its own axis, so that the drilled preform is in a first state or a second state; in the first state, the drilled preform is located below the liquid surface, and the drilled end is higher than the closed end; in the second state, the drilled preform is located above the liquid surface, and the drilled end is lower than the closed end.

[0008] According to the present invention, a cleaning device for a pre-drilled rod includes a rotating component comprising: a first rotating component, a second rotating component, and a rotating shaft. The rotating shaft is rotatably connected to the cleaning tank. The first rotating component and the second rotating component are coaxially spaced and fixed to the rotating shaft. The distance from the outermost radial end of the second rotating component to the rotating shaft is greater than the distance from the outermost radial end of the first rotating component to the rotating shaft. The rotating shaft is connected to the driving end of the driving component. The clamping component includes a first clamping component and a second clamping component. The first clamping component is disposed on the outer side wall of the first rotating component and matches the outer side wall of the first rotating component to fix the drilled end. The second clamping component is disposed on the outer side wall of the second rotating component and matches the outer side wall of the second rotating component to fix the closed end.

[0009] According to the present invention, a cleaning device for a pre-drilled rod is provided, wherein each clamping member comprises: a first fixing part and a second fixing part, which are spaced apart along the circumference of the rotating member on the outer side wall of the rotating member; a connecting part, the first end of which is rotatably connected to the first fixing part and can rotate about the axis of the first fixing part, and the connecting part has a notch near the second end, which is engaged with the second fixing part; an abutting part, which is provided on the side of the connecting part near the outer side wall of the rotating member; and a fastener, which passes through the connecting part and connects with the abutting part, driving the abutting part to move toward or away from the outer side wall of the rotating member.

[0010] According to the present invention, a cleaning device for a pre-drilled rod is provided, wherein the outer wall of the rotating member is provided with a first groove, and the clamping member is provided with a matching second groove on the side near the outer wall of the rotating member, and the first groove and the second groove surround to form a clamping space.

[0011] According to the present invention, a cleaning device for a pre-drilled rod is provided, wherein there are multiple clamping members, and the multiple clamping members are spaced apart on the outer side wall of the rotating member.

[0012] A cleaning device for drilled preforms according to the present invention further includes a liquid storage tank, the liquid storage tank having a first outlet and a second inlet, the cleaning tank having a second outlet and a first inlet, the first outlet being connected to the first inlet, and the second outlet being connected to the second inlet; both the first outlet and the second outlet are also used to be connected to a waste liquid collection tank; the first inlet is also used to be connected to a water source, and the second inlet is also used to be connected to a liquid supply tank.

[0013] According to the present invention, a cleaning device for a pre-drilled rod is provided, wherein the cleaning tank is provided with a first overflow port and the liquid storage tank is provided with a second overflow port, and both the first overflow port and the second overflow port are used to communicate with the waste liquid collection tank.

[0014] A cleaning device for borehole precast rods according to the present invention further includes a pumping component and a controller. The first outlet, the second outlet, and the outlet of the water source are all connected to the inlet of the pumping component. The first inlet, the second inlet, and the inlet of the waste liquid collection tank are all connected to the outlet of the pumping component. A first control valve is provided between the first outlet and the inlet of the pumping component; a second control valve is provided between the second outlet and the inlet of the pumping component; a third control valve is provided between the inlet of the water source and the inlet of the pumping component; a fourth control valve is provided between the outlet of the pumping component and the first inlet; a fifth control valve is provided between the outlet of the pumping component and the second inlet; and a sixth control valve is provided between the outlet of the pumping component and the inlet of the waste liquid collection tank. The driving component, the pumping component, the first control valve, the second control valve, the third control valve, the fourth control valve, the fifth control valve, and the sixth control valve are all electrically connected to the controller.

[0015] The present invention also provides a cleaning method for a pre-drilled rod, based on a cleaning device for a pre-drilled rod as described in any of the preceding claims, comprising: installing the pre-drilled rod to be cleaned on a clamping mechanism, wherein the pre-drilled rod is in an inclined state; adding cleaning fluid into a cleaning tank; driving the clamping mechanism to rotate the pre-drilled rod to be cleaned around its own axis; in a first state, liquid in the cleaning tank enters the pre-drilled rod; in a second state, liquid in the pre-drilled rod flows out; discharging the cleaning fluid and adding water into the cleaning tank; after cleaning is completed, discharging the liquid in the cleaning tank, turning off the drive, and removing the pre-drilled rod.

[0016] The present invention provides a cleaning method for a drilled preform, which involves adding a cleaning solution to a cleaning tank, comprising: controlling the first outlet of a storage tank to be connected to the first inlet of a cleaning tank to input cleaning solution into the cleaning tank; discharging the cleaning solution; and adding water to the cleaning tank, comprising: controlling the second outlet of the cleaning tank to be connected to the second inlet of a storage tank to discharge cleaning solution; and controlling the first inlet to be connected to a water source.

[0017] The present invention provides a cleaning device and method for drilled preforms. A clamping mechanism is disposed within a receiving cavity, detachably clamping the drilled preform, which is in an inclined state. A driving component drives the clamping mechanism to rotate within the receiving cavity containing cleaning fluid or water, resulting in either a first state or a second state where the drilled preform is submerged below the liquid surface. In the first state, the drilled preform is submerged below the liquid surface, with the drilled end higher than the closed end. The cleaning fluid or water in the receiving cavity flows into the internal channel of the drilled preform from the opening at the drilled end, filling the channel from top to bottom to achieve thorough cleaning of the channel's inner wall. In the second state, the drilled preform is above the liquid surface, with the drilled end lower than the closed end. The cleaning fluid in the internal channel of the drilled preform is discharged from the drilled end under gravity, thus achieving automatic drainage without manual emptying. This device can switch between two states of the drilled precast rod, automatically completing the filling, cleaning and drainage of liquid in the internal channels of the drilled precast rod. This reduces manual operation, lowers the frequency and risk of operators coming into contact with hazardous chemicals, and improves operational safety. Moreover, it has high cleaning efficiency, meeting production needs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the cleaning device for the pre-drilled rod provided by the present invention.

[0020] Figure 2 This is a right view of the cleaning device for the pre-drilled rod provided by the present invention.

[0021] Figure 3 This is a top view of the cleaning device for the pre-drilled rod provided by the present invention.

[0022] Figure 4 This is a partial structural schematic diagram of the cleaning device for the pre-drilled rod provided by the present invention.

[0023] Figure 5 This is a schematic diagram of the clamping mechanism provided by the present invention.

[0024] Figure 6 This invention provides Figure 5 A schematic diagram of the partial structure of region A in the middle.

[0025] Figure 7 This is a schematic diagram of the clamping mechanism provided by the present invention clamping a pre-drilled rod.

[0026] Figure 8 This invention provides Figure 7 A schematic diagram of the clamping mechanism rotating to the first state.

[0027] Figure 9 This invention provides Figure 7 A schematic diagram of the clamping mechanism rotating to the second state.

[0028] Figure 10 This is a schematic diagram of the clamping mechanism provided by the present invention for clamping multiple drilled preforms.

[0029] Figure 11 This invention provides Figure 10 Right view of the clamping mechanism.

[0030] Figure 12 This invention provides Figure 10 Left view of the clamping mechanism.

[0031] Figure 13 This is a schematic flowchart of the cleaning method for the pre-drilled rod provided by the present invention.

[0032] Figure label: 10. Drilled precast rod; 11. Drilled end; 12. Closed end; 20. Cleaning tank; 21. First inlet; 22. Second outlet; 23. First overflow outlet; 30. Clamping mechanism; 31. First rotating component; 32. Second rotating component; 321. First groove; 33. Rotation shaft; 34. First clamping component; 35. Second clamping component; 351. First fixing part; 352. Second fixing part; 353. Abutting part; 3531. Second groove; 354. Fastener; 355. Connecting part; 3551. Notch; 40. Drive unit; 50. Liquid storage tank; 51. First outlet; 52. Second inlet; 53. Second overflow outlet; 60. Pumping unit; 70. Controller; 80. First control valve; 90. Second control valve; 100. Third control valve; 110. Fourth control valve; 120. Fifth control valve; 130. Sixth control valve; 140. Seventh control valve; 150. Check valve. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] The specific terms used in this specification are for illustrative purposes only and are not intended to limit the illustrated embodiments. For example, expressions such as "same" and "identical" not only indicate a strictly identical state, but also indicate a state with tolerances or differences in the degree of functionality. For example, expressions indicating relative or absolute arrangement such as "in a certain direction," "along a certain direction," "side by side," "perpendicular," "centered on," "concentric," or "coaxial" not only strictly indicate such an arrangement, but also indicate a state of relative displacement by tolerances or angles or distances with the same degree of functionality.

[0035] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0036] Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "multiple" means two or more. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified. In the description of the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, B1 and / or B2 can represent: B1 existing alone, B1 and B2 existing simultaneously, and B2 existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided, but those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0039] The following is combined with Figures 1-13 The present invention describes a cleaning apparatus and method for borehole preforms.

[0040] The cleaning apparatus and method for borehole preforms of the present invention are applicable to the automated cleaning of slender borehole preforms 10. In the embodiments of the present invention, the borehole preform 10 has a borehole end 11 and a closed end 12.

[0041] The cleaning device for a pre-drilled rod provided in this embodiment of the invention includes: a cleaning tank 20, a clamping mechanism 30, and a driving member 40. The cleaning tank 20 has a receiving cavity for containing cleaning fluid and water. The clamping mechanism 30 is disposed within the receiving cavity. The clamping mechanism 30 includes a rotating member and a clamping member. The clamping member is disposed on the outer wall of the rotating member and is used to detachably clamp the pre-drilled rod 10, which is in an inclined state. The driving member 40 is connected to the rotating member and is used to drive the rotating member to rotate around its own axis, so that the pre-drilled rod 10 is in a first state or a second state. In the first state, the pre-drilled rod 10 is located below the liquid surface, with the drilled end 11 higher than the closed end 12; in the second state, the pre-drilled rod 10 is located above the liquid surface, with the drilled end 11 lower than the closed end 12.

[0042] The cleaning tank 20 has a receiving cavity for holding cleaning fluid and water. The cleaning fluid includes, but is not limited to, hydrofluoric acid solution. Figure 1 and Figure 2 As shown, the top of the cleaning tank 20 has an opening to facilitate the placement of the pre-drilled rod 10 to be cleaned. In some embodiments, a lid is provided at the opening, which can be placed over the opening during the cleaning process to prevent splashing.

[0043] A clamping mechanism 30 is disposed within the receiving cavity. The clamping mechanism 30 includes a rotating member and a clamping member. The rotating member is rotatably disposed within the receiving cavity, and its rotation axis 33 extends horizontally. The clamping member is disposed on the outer wall surface of the rotating member and is used to detachably clamp the drilled preform 10. After clamping, the drilled preform 10 is in an inclined posture, that is, the closed end 12 of the drilled preform 10 is higher or lower than the drilled end 11 relative to the horizontal plane.

[0044] In one embodiment, the rotating component is a frustum-shaped structure. The frustum-shaped structure has a first end face and a second end face, the diameter of the first end face being smaller than the diameter of the second end face, thereby forming a tapered outer wall surface between the first and second end faces. Because the radial height of the tapered outer wall surface differs at different axial positions, a height difference is generated in the vertical direction between the drilling end 11 and the closed end 12 of the drill preform 10 held by the clamping member fixed thereon.

[0045] The driving component 40 passes through the cleaning tank 20 and is connected to the rotating component. The driving component 40 drives the rotating component to rotate the clamped drilling preform 10 around its own axis, thereby adjusting the spatial orientation of the drilling preform 10 within the receiving cavity, placing it in a first state and a second state. Figure 8 As shown, in the first state, the pre-drilled rod 10 is located below the liquid level in the receiving cavity, and the height of the drilled end 11 is higher than the height of the closed end 12. At this time, the cleaning fluid or water in the receiving cavity can flow into the internal channel of the pre-drilled rod 10 from the opening of the drilled end 11, filling the channel from top to bottom. As the rotating component rotates, the pre-drilled rod 10 rotates accordingly, and the liquid in the internal channel sloshes, which can thoroughly clean the inner wall of the internal channel. Figure 9 As shown, the pre-drilled rod 10 rotates to the second state. At this time, the pre-drilled rod 10 is located above the liquid surface in the receiving cavity and is detached from the cleaning fluid. The height of the drilling end 11 is lower than the height of the closed end 12. In this state, the cleaning fluid in the internal channel of the pre-drilled rod 10 is discharged from the drilling end 11 under the action of gravity, thereby realizing automatic drainage.

[0046] In some embodiments, the drive element 40 is a servo motor, and its output shaft is connected to the rotating element via a coupling or a drive belt. The servo motor has precise angle control capabilities, ensuring that the rotating element switches accurately between a first state and a second state.

[0047] It should be noted that the liquid level of the cleaning fluid or water in the containment cavity is set close to the central axis of the rotating component, ensuring that part of the outer wall surface of the rotating component is above the liquid surface and part of the outer wall surface is below the liquid surface, thereby ensuring that the drilling preform 10 switches between the first state and the second state during the rotation process.

[0048] The cleaning device for a pre-drilled rod provided in this embodiment of the invention involves placing a clamping mechanism 30 within a receiving cavity. The clamping mechanism 30 detachably clamps the pre-drilled rod 10, which is in an inclined state. A driving member 40 drives the clamping mechanism 30 to rotate within the receiving cavity containing cleaning fluid or water, resulting in either a first state or a second state where the pre-drilled rod 10 is below the liquid surface. In the first state, the pre-drilled rod 10 is submerged below the liquid surface, with the drilled end 11 higher than the closed end 12. The cleaning fluid or water in the receiving cavity can flow into the internal channel of the pre-drilled rod 10 from the opening of the drilled end 11, filling the channel from top to bottom to achieve thorough cleaning of the channel's inner wall. In the second state, the pre-drilled rod 10 is above the liquid surface, with the drilled end 11 lower than the closed end 12. The cleaning fluid in the internal channel of the pre-drilled rod 10 is discharged from the drilled end 11 under the influence of gravity, thus achieving automatic drainage without the need for manual emptying. This device can switch the drilled preform 10 between two states, automatically completing the filling, cleaning and drainage of liquid in the internal channels of the drilled preform 10, reducing manual operation, reducing the frequency and risk of operators coming into contact with hazardous chemicals, and improving operational safety; and the cleaning efficiency is high, meeting production needs.

[0049] In some embodiments of the present invention, there are multiple clamping members, such as 2, 3, 5, 6, etc. The multiple clamping members are spaced apart along the outer side wall of the rotating member. Preferably, they are evenly distributed along the circumference of the rotating member. Each clamping member can detachably clamp one pre-drilled rod 10. Thus, when the driving member 40 drives the rotating member to rotate around its own axis, the clamping members and the multiple pre-drilled rods 10 they clamp rotate synchronously. During the rotation of the rotating member, due to the different circumferential positions of each pre-drilled rod 10, some pre-drilled rods 10 are located below the liquid surface in a first state for cleaning fluid injection and cleaning; some pre-drilled rods 10 are located above the liquid surface in a second state.

[0050] This invention allows for the simultaneous cleaning of multiple drilled preforms 10, eliminating the need for individual processing and significantly increasing the cleaning quantity per batch, thus improving production efficiency. Furthermore, all drilled preforms 10 undergo the same cleaning process within the same rotation cycle, ensuring consistent cleaning results across batches and fully meeting the demands of large-scale industrial production.

[0051] It should be noted that the specifications (such as outer diameter, length or hole diameter) of multiple pre-drilled rods 10 can be the same to facilitate batch processing; or, according to actual production needs, pre-drilled rods 10 of different specifications can be mixed and placed in the same batch, and the clamping diameter of the clamping parts can be changed or adjusted to achieve compatibility, thereby enhancing the versatility and flexibility of the device.

[0052] In some embodiments, the outer side wall of the rotating member is provided with a first groove 321, and the clamping member is provided with a matching second groove 3531 on the side near the outer side wall of the rotating member. The first groove 321 and the second groove 3531 surround and form a clamping space for clamping the drilled preform 10.

[0053] refer to Figure 11 and Figure 12 The outer wall of the rotating component is provided with a first groove 321, which extends along the axial direction of the rotating component. Its cross-sectional shape is preferably arc-shaped to fit the outer peripheral wall of the drilling preform 10. The clamping component is provided with a second groove 3531 on the side near the outer wall of the rotating component. The extension direction of the second groove 3531 is consistent with the extension direction of the first groove 321, and its cross-sectional shape is also adapted to the outer peripheral wall of the drilling preform 10.

[0054] The clamping member is detachably installed on the outer wall of the rotating member. The clamping member presses against the outer wall of the rotating member, causing the first groove 321 and the second groove 3531 to close together, forming a closed or semi-closed clamping space. The outline of this clamping space matches the shape outline of the outer peripheral wall of the drill preform 10, and is used to accommodate and clamp the drill preform 10.

[0055] In some embodiments, the inner wall surfaces of the first groove 321 and the second groove 3531 are still provided with elastic pads to increase the friction between them and the preform 10, while avoiding hard contact that could cause scratches or stress concentration on the surface of the preform 10.

[0056] In some embodiments of the present invention, the rotating component includes a first rotating component 31, a second rotating component 32, and a rotating shaft 33. The rotating shaft 33 is rotatably connected to the cleaning tank 20. The first rotating component 31 and the second rotating component 32 are coaxially spaced and fixed to the rotating shaft 33. The distance from the outermost radial end of the second rotating component 32 to the rotating shaft 33 is greater than the distance from the outermost radial end of the first rotating component 31 to the rotating shaft 33. The rotating shaft 33 is connected to the driving end of the driving component 40. The clamping component includes a first clamping component 34 and a second clamping component 35. The first clamping component 34 is disposed on the outer side wall of the first rotating component 31 and matches the outer side wall of the first rotating component 31 to fix the drilled end 11. The second clamping component 35 is disposed on the outer side wall of the second rotating component 32 and matches the outer side wall of the second rotating component 32 to fix the closed end 12.

[0057] refer to Figure 5 and Figure 7The rotating shaft 33 extends horizontally and is rotatably connected to the opposite side walls of the cleaning tank 20 via bearing seats. In one embodiment, the rotating shaft 33 is rotatably connected to the two side walls along the length of the cleaning tank 20. The first rotating member 31 and the second rotating member 32 are both fixedly and coaxially sleeved on the rotating shaft 33, and are spaced apart along the axial direction of the rotating shaft 33. In one embodiment, both the first rotating member 31 and the second rotating member 32 are disk-shaped structures, with their disk surfaces perpendicular to the axis of the rotating shaft 33. The outer diameter of the second rotating member 32 is larger than the outer diameter of the first rotating member 31. One end of the rotating shaft 33 is connected to the driving end of the driving member 40 so that the first rotating member 31 and the second rotating member 32 rotate synchronously under the drive of the driving member 40.

[0058] The first clamping member 34 is matched with the first rotating member 31 to fix the drill end 11, and the second clamping member 35 is matched with the second rotating member 32 to fix the closed end 12. The radial height of the closed end 12 is higher than the radial height of the drill end 11, so that the drill preform 10 naturally forms an inclined posture.

[0059] It should be noted that the axial distance between the first rotating member 31 and the second rotating member 32 is adjustable to accommodate drilling preforms 10 of different lengths.

[0060] In some embodiments, reference Figure 10 , Figure 11 and Figure 12 There are multiple first clamping members 34 and multiple second clamping members 35. Multiple first clamping members 34 are arranged at intervals along the circumference of the first rotating member 31, and multiple second clamping members 35 are arranged at intervals along the circumference of the second rotating member 32. The number of first clamping members 34 and second clamping members 35 is the same, and their positions correspond one-to-one to ensure that both ends of each drilled preform 10 are reliably clamped.

[0061] In some embodiments of the present invention, the clamping member includes: a first fixing part 351, a second fixing part 352, a connecting part 355, an abutting part 353, and a fastener 354. The first fixing part 351 and the second fixing part 352 are spaced apart circumferentially on the outer side wall of the rotating member. The first end of the connecting part 355 is rotatably connected to the first fixing part 351 and can rotate about the axis of the first fixing part 351. The connecting part 355 has a notch 3551 near its second end, which is engaged with the second fixing part 352. The abutting part 353 is provided on the side of the connecting part 355 near the outer side wall of the rotating member. The fastener 354 passes through the connecting part 355 and connects with the abutting part 353, driving the abutting part 353 to move toward or away from the outer wall surface of the rotating member.

[0062] refer to Figure 5 and Figure 6The first fixing part 351 and the second fixing part 352 can be fixed to the outer wall of the rotating part by welding, threaded connection or integral molding. In one embodiment, the first fixing part 351 and the second fixing part 352 are columnar structures, such as screws. The first end of the connecting part 355 is rotatably connected to the first fixing part 351 by a pivot, and the connecting part 355 can rotate about its own axis, the axis of the first fixing part 351 being perpendicular to the axis of the central axis of the rotating part. The connecting part 355 is provided with a notch 3551, which is located near the second end. It should be noted that after the drilling preform 10 is fixed, the notch 3551 faces the center of the rotating part or is away from the center of the rotating part. When the connecting part 355 rotates about the first fixing part 351 to the closed position, the notch 3551 engages with the second fixing part 352, thereby achieving quick locking of the second end of the connecting part 355. It should be noted that the second fixing part 352 is provided with two limiting platforms. The two limiting platforms are arranged at intervals along the extension direction of the second fixing part 352, and the two limiting platforms form a limiting space. When the second end of the connecting part 355 is locked in the limiting space, it is used to restrict the connecting part 355 and prevent the connecting part 355 from moving.

[0063] An abutment portion 353 is disposed on the side of the connecting portion 355 near the outer wall of the rotating component, for directly pressing against the outer wall surface of the drilled preform 10. In one embodiment, the abutment portion 353 has a second groove 3531 on the side facing the rotating component, and the second groove 3531 matches the outer peripheral wall of the drilled preform 10. Correspondingly, the outer wall of the rotating component has a first groove 321. A fastener 354 passes through the connecting portion 355 and is connected to the abutment portion 353. The fastener 354 is used to drive the abutment portion 353 to move towards or away from the outer wall surface of the rotating component, so as to adjust the distance between the abutment portion 353 and the outer wall surface of the rotating component. Preferably, the fastener 354 is an adjusting bolt, and a threaded hole is provided on the connecting portion 355, the adjusting bolt is threaded into the threaded hole, and the end of the adjusting bolt is connected to the abutment portion 353. The operator can precisely control the clamping force of the abutment portion 353 on the drilled preform 10 by turning the adjusting bolt.

[0064] When the pre-drilled rod 10 needs to be installed, the operator first disengages the second end of the connecting part 355 from the second fixing part 352, that is, rotates the connecting part 355 around the first fixing part 351, so that the second end of the connecting part 355 disengages from the second fixing part 352, and the clamping member is in the open state. Then, the pre-drilled rod 10 is placed at a predetermined position on the outer wall surface of the rotating part. Next, the connecting part 355 is rotated in the opposite direction to the closed position, so that the notch 3551 is engaged with the second fixing part 352, completing the initial locking. Finally, the fastener 354 is tightened, driving the abutment part 353 to move toward the outer wall surface of the rotating part until the pre-drilled rod 10 is reliably clamped between the abutment part 353 and the outer wall surface of the rotating part. When it is necessary to remove the pre-drilled rod 10, loosen the fastener 354 in the opposite direction to move the abutting part 353 away from the pre-drilled rod 10 to release the clamping force, and then rotate the connecting part 355 to disengage the second end from the second fixing part 352, so that the rod can be removed.

[0065] In some embodiments, the first clamping member and the second clamping member have the same structure. In some embodiments, the first clamping member and the second clamping member have different structures.

[0066] refer to Figure 3 and Figure 4 The cleaning device for the pre-drilled rod provided in this embodiment of the invention also includes a storage tank 50, which is used to store cleaning fluid, such as hydrofluoric acid. This allows for centralized preparation, storage, and recycling of the cleaning fluid, which helps reduce production costs and waste discharge. The storage tank 50 has a first outlet 51 and a second inlet 52. The cleaning tank 20 has a second outlet 22 and a first inlet 21. The first outlet 51 and the first inlet 21 are connected through a first pipeline, and the second outlet 22 and the second inlet 52 are connected through a second pipeline, thus forming a circulation loop for the cleaning fluid between the storage tank 50 and the cleaning tank 20. Furthermore, both the first outlet 51 and the second outlet 22 are also connected to a waste collection tank, allowing for centralized treatment of waste fluid in the storage tank 50 or the cleaning tank 20. The first inlet 21 is also connected to a water source; when pure water cleaning is required, pure water can enter the receiving cavity of the cleaning tank 20 through the first inlet 21. The second inlet 52 is also used to connect with the supply tank to replenish or replace the cleaning fluid in the storage tank 50, so as to maintain the concentration and level of the cleaning fluid in the storage tank 50.

[0067] The cleaning device for the drilled precast rods also includes a pumping component 60. The first outlet 51, the second outlet 22, and the outlet of the water source are all connected to the inlet of the pumping component 60. The first inlet 21, the second inlet 52, and the inlet of the waste liquid collection tank are all connected to the outlet of the pumping component 60. The pumping component 60 is used to pump the cleaning fluid in the storage tank 50 through the first outlet 51 of the storage tank 50 to the first inlet 21 of the cleaning tank 20, thereby injecting the cleaning fluid into the receiving cavity. In some embodiments, a first control valve 80 is provided between the inlet of the pumping component 60 and the first outlet 51 of the storage tank 50, and a fourth control valve 110 is provided between the outlet of the pumping component 60 and the first inlet 21 of the cleaning tank 20. By opening the first control valve 80 and the fourth control valve 110, the pumping component 60 can pump the cleaning fluid in the storage tank 50 into the cleaning tank 20. A second control valve 90 is provided between the second outlet 22 of the cleaning tank 20 and the inlet of the pumping component 60, and a fifth control valve 120 is provided between the outlet of the pumping component 60 and the second inlet 52 of the storage tank 50. By opening the second control valve 90 and the fifth control valve 120, the pumping component 60 can pump the cleaning fluid in the cleaning tank 20 into the storage tank 50, thereby realizing recycling.

[0068] A sixth control valve 130 is provided between the outlet of the pumping unit 60 and the inlet of the waste liquid collection tank. This valve controls the opening of the second control valve 90 between the second outlet 22 of the cleaning tank 20 and the inlet of the pumping unit 60, as well as the sixth control valve 130, allowing waste liquid in the cleaning tank 20 to be discharged into the waste liquid collection tank. The opening of the first control valve 80 between the inlet of the pumping unit 60 and the first outlet 51 of the storage tank 50, as well as the sixth control valve 130, allows the cleaning fluid in the storage tank 50 to be discharged and replaced with new cleaning fluid. Replacing the cleaning fluid can be achieved by opening the fifth control valve 120 between the outlet of the pumping unit 60 and the second inlet 52 of the storage tank 50, as well as the seventh control valve between the supply tank and the inlet of the pumping unit 60, allowing new cleaning fluid to be introduced into the storage tank 50.

[0069] Furthermore, a third control valve 100 is provided between the water source inlet and the pumping component 60 inlet. By opening the third control valve 100 and the first inlet 21 of the cleaning tank 20, the pumping component 60 can deliver water into the cleaning tank 20 to clean the drilled preform 10. After cleaning, the wastewater can be discharged by opening the second control valve 90 between the second outlet 22 of the cleaning tank 20 and the pumping component 60 inlet, and the sixth control valve 130 between the waste liquid collection tank and the pumping component 60 outlet.

[0070] In some embodiments, a liquid level sensor is provided in the cleaning tank 20 to detect the liquid level information in the cleaning tank 20. When the liquid level in the cleaning tank 20 reaches a preset water level, the input of cleaning fluid into the cleaning tank 20 is stopped.

[0071] The cleaning tank 20 is also equipped with a first overflow outlet 23, located above the target water level of the cleaning tank 20. The first overflow outlet 23 is connected to the inlet of the waste liquid collection tank to prevent excessive cleaning liquid in the cleaning tank 20. In some embodiments, a first one-way valve is provided between the first overflow outlet 23 and the inlet of the waste liquid collection tank for unidirectional flow of cleaning liquid or water in the cleaning tank 20 to the waste liquid collection tank. The storage tank 50 is equipped with a second overflow outlet 53, located at the top of the storage tank 50. The second overflow outlet 53 is connected to the inlet of the waste liquid collection tank. A second one-way valve is provided between the second overflow outlet 53 and the inlet of the waste liquid collection tank for unidirectional flow of cleaning liquid in the storage tank 50 to the waste liquid collection tank. In one embodiment, the storage tank 50 is located below the cleaning tank 20, and the first overflow outlet 23 and the second overflow outlet 53 flow into the waste liquid collection tank through two converging channels. A one-way valve 150 can be provided between the converging inlet and the inlet of the waste liquid collection tank to achieve unidirectional flow.

[0072] In some embodiments of the present invention, the cleaning device for the preformed drill bit further includes a controller 70, and the drive component 40, the pumping component 60, the first control valve 80, the second control valve 90, the third control valve 100, the fourth control valve 110, the fifth control valve 120, the sixth control valve 130 and the seventh control valve 140 are all electrically connected to the controller 70. The controller 70 controls the movement of the corresponding components according to the actual cleaning process.

[0073] Based on the cleaning device for the pre-drilled rod in any of the above embodiments, refer to Figure 13 This invention also provides a method for cleaning a pre-drilled rod, comprising: Step 100, installing the pre-drilled rod to be cleaned onto a clamping mechanism, with the pre-drilled rod in an inclined state. Step 200, adding a cleaning solution, such as hydrofluoric acid, into a cleaning tank. Specifically, controlling the first outlet of the storage tank to connect with the first inlet of the cleaning tank, and inputting the cleaning solution into the cleaning tank. Step 300, driving the clamping mechanism to rotate the pre-drilled rod to be cleaned around its own axis; in a first state, the liquid in the cleaning tank enters the pre-drilled rod; in a second state, the liquid in the pre-drilled rod flows out. Step 400, draining the cleaning solution and adding water into the cleaning tank. Specifically, controlling the second outlet of the cleaning tank to connect with the second inlet of the storage tank, and draining the cleaning solution; controlling the first inlet to connect with a water source. Step 500, after cleaning is completed, draining the liquid in the cleaning tank, turning off the drive mechanism, and removing the pre-drilled rod.

[0074] The pre-drilled rods with cleaning function are installed on the clamping mechanism; one or more can be installed. The pre-drilled rods are tilted.

[0075] The controller connects the first outlet of the storage tank to the first inlet of the cleaning tank, allowing cleaning fluid to be introduced into the cleaning tank. The cleaning tank is equipped with a level gauge; when the liquid level reaches the target position, the connection between the first outlet and the first inlet is disconnected. It should be noted that the target liquid level position is located near the rotating shaft of the clamping mechanism. Specifically, the controller starts the pump and simultaneously opens the first and fourth control valves to introduce cleaning fluid into the cleaning tank. When the liquid level reaches the target position, the controller closes the pump, the first control valve, and the fourth control valve.

[0076] The controller activates the drive mechanism, which rotates the preform to be cleaned around its own axis within the cleaning tank, positioning the preform in either a first or second state below the liquid surface. In the first state, the preform is submerged with the drilled end higher than the closed end. Cleaning fluid from the receiving cavity flows into the internal channels of the preform from the opening at the drilled end, filling the channels from top to bottom for thorough cleaning of the channel walls. In the second state, the preform is above the liquid surface with the drilled end lower than the closed end. Cleaning fluid in the internal channels of the preform drains out from the drilled end under gravity, achieving automatic drainage without manual emptying.

[0077] After cleaning, the controller starts the pump and simultaneously connects the second outlet and the second inlet to discharge the cleaning fluid. Specifically, the controller opens the second control valve between the second outlet of the cleaning tank and the inlet of the pump, as well as the fifth control valve between the outlet of the pump and the second inlet of the storage tank. The pump then pumps the cleaning fluid from the cleaning tank to the storage tank for recycling. After the cleaning fluid is drained, some cleaning fluid remains in the cleaning tank and on the drilled preform. Therefore, the controller connects the first inlet of the cleaning tank to a water source to add water and clean the tank and drilled preform with pure water. Specifically, the controller starts the pump and simultaneously opens the third control valve between the inlet of the water source and the inlet of the pump. The pump then delivers water into the cleaning tank to clean the drilled preform. After cleaning, wastewater is discharged by opening the second control valve between the second outlet of the cleaning tank and the inlet of the pump, as well as the sixth control valve between the waste collection tank and the outlet of the pump. This cycle is repeated multiple times to ensure the drilled preform is thoroughly cleaned. It should be noted that the drive unit remains operational throughout the entire cleaning process; that is, the preformed drill rod continues to rotate, switching back and forth between the first and second states. After cleaning is complete, the drive unit is shut off, and the preformed drill rod is removed.

[0078] During the cleaning process, the concentration of the cleaning solution (hydrofluoric acid) gradually decreases with each use. Additionally, the hydrofluoric acid solution will decrease with repeated use due to residues and other factors, necessitating replacement. Ideally, replacement should be done after cleaning when the solution is not in use, allowing direct replacement of the hydrofluoric acid in the storage tank. Specifically, the controller starts the pump, connecting the first outlet of the storage tank to the inlet of the waste collection tank. This involves opening the first control valve between the pump inlet and the first outlet of the storage tank, as well as the sixth control valve between the pump outlet and the waste collection tank inlet, discharging the unusable hydrofluoric acid solution from the storage tank to the waste collection tank for centralized treatment. After the storage tank is emptied, the first and sixth control valves are closed. Further, the controller opens the fifth control valve between the pump outlet and the second inlet of the storage tank, as well as the seventh control valve between the supply tank and the pump inlet, to introduce new cleaning solution into the storage tank. After filling, the fifth and seventh control valves are closed.

[0079] The cleaning method for borehole preforms provided in this invention allows operators to simply place and hold the borehole preforms and control the cleaning device. It is convenient to operate, highly safe, and has high cleaning efficiency and good consistency.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cleaning device for drilled precast rods, characterized in that, The drilled precast bar has a closed end and a drilled end. The cleaning device for the drilled precast bar includes: The cleaning tank has a receiving cavity for holding cleaning fluid and water; A clamping mechanism is provided within the receiving cavity; the clamping mechanism includes a rotating component and a clamping component, the clamping component is provided on the outer side wall of the rotating component, and the clamping component is used to detachably clamp the pre-drilled rod, the pre-drilled rod being in an inclined state; A driving component, connected to the rotating component, is used to drive the rotating component to rotate around its own axis so that the drilled preform is in a first state or a second state. In the first state, the pre-drilled rod is located below the liquid surface, and the drilled end is higher than the closed end; in the second state, the pre-drilled rod is located above the liquid surface, and the drilled end is lower than the closed end.

2. The cleaning device for the pre-drilled rod according to claim 1, characterized in that, The rotating component includes: a first rotating component, a second rotating component, and a rotating shaft. The rotating shaft is rotatably connected to the cleaning tank. The first rotating component and the second rotating component are coaxially spaced and fixed to the rotating shaft. The distance from the outermost radial end of the second rotating component to the rotating shaft is greater than the distance from the outermost radial end of the first rotating component to the rotating shaft. The rotating shaft is connected to the driving end of the driving component. The clamping member includes a first clamping member and a second clamping member. The first clamping member is disposed on the outer side wall of the first rotating member and matches the outer side wall of the first rotating member to fix the drilled end. The second clamping member is disposed on the outer side wall of the second rotating member and matches the outer side wall of the second rotating member to fix the closed end.

3. The cleaning device for the pre-drilled rod according to claim 1, characterized in that, The clamping components all include: The first fixing part and the second fixing part are provided at intervals along the circumference of the rotating part on the outer side wall of the rotating part; The connecting part has a first end that is rotatably connected to the first fixing part and can rotate about the axis of the first fixing part. The connecting part has a notch near the second end and is engaged with the second fixing part. The abutting portion is located on the side of the connecting portion near the outer side wall of the rotating member; Fasteners are inserted through the connecting portion and connected to the abutting portion, driving the abutting portion to move toward or away from the outer wall surface of the rotating component.

4. The cleaning device for the pre-drilled rod according to claim 1, characterized in that, The outer wall of the rotating component is provided with a first groove, and the clamping component is provided with a matching second groove on the side near the outer wall of the rotating component. The first groove and the second groove surround and form a clamping space.

5. The cleaning device for the pre-drilled rod according to claim 1, characterized in that, There are multiple clamping members, which are spaced apart on the outer side wall of the rotating member.

6. The cleaning apparatus for borehole preforms according to any one of claims 1 to 5, characterized in that, It also includes a liquid storage tank, which has a first outlet and a second inlet. The cleaning tank has a second outlet and a first inlet. The first outlet is connected to the first inlet, and the second outlet is connected to the second inlet. Both the first outlet and the second outlet are also used to connect to a waste liquid collection tank. The first inlet is also used to connect to a water source, and the second inlet is also used to connect to a liquid supply tank.

7. The cleaning device for the pre-drilled rod according to claim 6, characterized in that, The cleaning tank is provided with a first overflow outlet, and the liquid storage tank is provided with a second overflow outlet. Both the first overflow outlet and the second overflow outlet are used to communicate with the waste liquid collection tank.

8. The cleaning device for the pre-drilled rod according to claim 7, characterized in that, It also includes a pumping unit and a controller. The first outlet, the second outlet, and the outlet of the water source are all connected to the inlet of the pumping unit, and the first inlet, the second inlet, and the inlet of the waste liquid collection tank are all connected to the outlet of the pumping unit. A first control valve is provided between the first outlet and the inlet of the pumping component, a second control valve is provided between the second outlet and the inlet of the pumping component, and a third control valve is provided between the inlet of the water source and the inlet of the pumping component. A fourth control valve is provided between the outlet of the pumping component and the first inlet, a fifth control valve is provided between the outlet of the pumping component and the second inlet, and a sixth control valve is provided between the outlet of the pumping component and the inlet of the waste liquid collection tank. The drive unit, the pumping unit, the first control valve, the second control valve, the third control valve, the fourth control valve, the fifth control valve, and the sixth control valve are all electrically connected to the controller.

9. A method for cleaning drilled preforms, based on the cleaning apparatus for drilled preforms as described in any one of claims 1 to 8, characterized in that, include: The pre-formed drill rod to be cleaned is installed in the clamping mechanism, and the pre-formed drill rod is in an inclined state. Add cleaning solution into the cleaning tank; The drive clamping mechanism causes the precast drill rod to be cleaned to rotate around its own axis. In the first state, the liquid in the cleaning tank enters the pre-drilled rod; in the second state, the liquid in the pre-drilled rod flows out. Drain the cleaning solution and add water to the cleaning tank; After cleaning, drain the liquid from the cleaning tank, turn off the drive unit, and remove the pre-drilled rod.

10. The cleaning method for the pre-drilled rod according to claim 9, characterized in that, Adding cleaning solution to the cleaning tank includes: controlling the first outlet of the storage tank to connect with the first inlet of the cleaning tank, and inputting cleaning solution into the cleaning tank; The cleaning process involves draining the cleaning solution and adding water to the cleaning tank, including: connecting the second outlet of the cleaning tank to the second inlet of the storage tank to drain the cleaning solution; and connecting the first inlet to the water source.

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