Air leakage threaded hole repairing system and air leakage threaded hole repairing process

Abstract

This application provides a leak-proof threaded hole repair system and a leak-proof threaded hole repair process. The aforementioned leak-proof threaded hole repair system includes a sealing device, a liquid injection device, and a pressurizing device. The sealing device includes a pressure plate and a sealing ring, with the sealing ring embedded within the pressure plate. The pressure plate and the sealing ring work together to seal the leaking threaded hole in the casting. The pressure plate has a pressurized liquid injection plug, which is used to seal the leaking threaded hole during liquid injection and pressurization. The pressurized liquid injection plug forms a pressurized liquid injection channel, which communicates with the leaking threaded hole in the casting. The sealing ring is fitted onto the pressurized liquid injection plug. The pressure plate has a pressurized liquid injection port, which communicates with the pressurized liquid injection channel. The injection end of the liquid injection device communicates with the injection port. The pressurizing device is used to pressurize the repair fluid in the leaking threaded hole. The aforementioned leak-proof threaded hole repair system has high repair efficiency and low cost.

Description

Technical Field

[0001] This invention relates to the field of casting technology, and in particular to a leak-proof threaded hole repair system and a leak-proof threaded hole repair process. Background Technology

[0002] Castings with threaded holes are prone to porosity or internal sand holes during the molding process, meaning these holes are more susceptible to air leakage. Leakage channels easily form on the inner walls of these holes, preventing the casting from passing leakage tests. Therefore, it is necessary to repair these leakage channels. Since the leaking threaded hole is connected to the leakage channel, the sealant enters the channel through the leaking threaded hole. The sealant is then heated and cured, and the cured sealant accumulated in the leaking threaded hole is manually removed. A common repair method involves placing the entire casting into a vacuum repair system (a repair line) for vacuum repair. After vacuum repair, the cured sealant accumulated in the leaking threaded hole is manually removed.

[0003] Traditional leak repair methods have at least three problems: 1) Traditional vacuum leak repair requires the construction of a leak repair line, which is costly; 2) It is difficult and inefficient to manually remove the hardened sealant accumulated in the leaking threaded hole, making the leak repair process for castings with leaking threaded holes inefficient; 3) A lot of sealant accumulates in the leaking threaded hole and does not achieve the leak repair effect, which means a lot of sealant is wasted.

[0004] For example, traditional leak repair methods, such as CN103341615, propose a pressurized impregnation method and system for repairing leaks in cast aluminum parts of a box shell. The specific technical solution is as follows: After removing oil and dirt by alkaline washing and cleaning at 50-60℃, the workpiece with tiny needle-like gaps and leaks is placed in an impregnation tank and vacuumed to 50 mmHg to remove air, moisture, and free impurities from the gaps in the workpiece. Then, a leak repair solution composed of water glass, ferric oxide, aluminum oxide, calcium oxide, magnesium oxide, zinc oxide, phosphorus pentoxide, and water at a temperature of 50-60℃ is poured into the impregnation tank. Utilizing the principles of vacuum and capillary action, the leak repair solution is absorbed into the gaps in the workpiece. Next, 5-6 atmospheres of pressure are applied to the leak repair solution in the impregnation tank, allowing the solution to further penetrate and fill the gaps in the workpiece under pressure. Finally, it is cured by heating. Although the repair pass rate is high, turning scrap into qualified products and greatly reducing the scrap rate of cast aluminum parts, resulting in significant economic benefits, it requires the construction of a repair line equipped with a repair cylinder and manual removal of excess cured repair adhesive, leading to a large waste of repair fluid, which means high cost and low efficiency. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a leak-proof threaded hole repair system and process with high repair efficiency and low cost.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A leak-proof threaded hole repair system, characterized in that it comprises:

[0008] A sealing device includes a pressure plate and a sealing ring. The sealing ring is embedded in the pressure plate. The pressure plate and the sealing ring are used together to seal the leaking threaded hole of the casting. The pressure plate is provided with a pressure injection plug. The pressure injection plug is used to seal the leaking threaded hole during injection and pressurization. The pressure injection plug forms a pressure injection channel, which is used to communicate with the leaking threaded hole of the casting. The sealing ring is sleeved on the pressure injection plug. The pressure plate has a pressure injection port, which is connected to the pressure injection channel.

[0009] The liquid injection device is connected to the liquid injection port at its injection end.

[0010] A pressurizing device is used to pressurize the sealant fluid inside the leaking threaded hole.

[0011] In one embodiment, the injection device is disposed on the side of the clamping plate opposite to the sealing ring.

[0012] In one embodiment, the injection device is disposed at the upper end of the clamping plate.

[0013] In one embodiment, the clamping plate has the sealing groove, and the sealing ring is embedded in the sealing groove.

[0014] In one embodiment, the leak-proof threaded hole repair system further includes a cleaning device for cleaning the leak-proof threaded hole.

[0015] In one embodiment, the leak-proof threaded hole repair system further includes a drying device for drying the leak-proof threaded hole.

[0016] In one embodiment, the leak-proof threaded hole repair system further includes a drive device, the power output end of which is connected to the pressure plate, and the drive device is used to drive the sealing ring and the pressurized injection plug to abut against the casting.

[0017] In one embodiment, the pressurized injection plug is a threaded plug, which is used to screw into the inner peripheral wall of the leaking threaded hole.

[0018] In one embodiment, the sealing ring is a rubber sealing ring.

[0019] A leak-proof threaded hole repair process, characterized in that the leak-proof threaded hole in the casting is repaired using the leak-proof threaded hole repair system described in any of the above embodiments; the repair process includes the following steps:

[0020] Obtain the casting having the leaking threaded hole;

[0021] The sealing device is used to seal the leaking threaded hole and the leakage channel.

[0022] The liquid injection device is used to inject liquid into the leaking threaded hole;

[0023] The pressurizing device is used to pressurize the sealant in the leakage channel;

[0024] The leak-proof fluid in the leaking threaded hole is extracted using a liquid extraction device.

[0025] The leak-proof fluid inside the leaking threaded hole is cleaned using a cleaning device.

[0026] Compared with the prior art, the present invention has at least the following advantages:

[0027] 1) The leak-proof threaded hole repair system of the present invention uses a clamping plate and a sealing ring to seal the leak-proof threaded hole of the casting. That is, the clamping plate, the sealing ring and the casting together form a sealed environment around the leak-proof threaded hole. The injection end of the injection device is connected to the injection port. That is, the injection device injects repair fluid into the leak-proof threaded hole through the pressurized injection channel. The pressurizing device is used to pressurize the repair fluid in the leak-proof threaded hole. That is, the pressurizing device is used to pressurize and inject the repair fluid into the leakage channel, ensuring the repair effect of the leak-proof threaded hole repair system on the leakage channel, thereby ensuring the quality of the casting.

[0028] 2) In the leak-proof threaded hole repair system of the present invention, the pressurizing device is used to inject the repair fluid into the leak channel under pressure. After the leak channel is filled with the repair fluid, the repair fluid in the leak channel is in a pressure-holding state, that is, the repair fluid in the leak channel maintains pressure. Furthermore, since the area of ​​the leak channel opening is much smaller than the area of ​​the inner circumferential wall of the leak-proof threaded hole, and the surface tension of the repair fluid in the leak channel is present, removing the repair fluid from the leak-proof threaded hole, such as by extracting the repair fluid, has minimal impact on the repair fluid in the leak channel. That is, the repair fluid in the leak channel is stably stored within the leak channel. Therefore, it is not necessary to heat and cure the repair fluid before removing it from the leak-proof threaded hole, avoiding… This design eliminates the problem of cured sealant accumulating inside leaking threaded holes, as the sealant is in liquid form and easier to remove, thus improving the efficiency and difficulty of removing sealant from leaking threaded holes. Furthermore, the pressurizing device injects the sealant into the leakage channel under pressure, meaning the pressurized injection channel only seals leaking threaded holes, omitting sealant from non-leaking threaded holes. This improves sealing efficiency and consequently increases casting production efficiency. At the same time, omitting sealant from non-leaking threaded holes avoids the need for subsequent sealant treatment, further enhancing casting production efficiency.

[0029] 3) The leak-proof threaded hole repair system of the present invention completes the repair process, avoiding the need to build a repair line, thereby reducing the repair cost and thus reducing the production cost of castings. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a leak-proof threaded hole repair system according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A partial schematic diagram of a leak-proof threaded hole repair system shown.

[0033] Figure 3 for Figure 1 A cross-sectional view of the leak-proof threaded hole repair system shown.

[0034] Figure 4 This is a cross-sectional view of a leak-proof threaded hole repair system according to another embodiment of the present invention;

[0035] Figure 5 This is a partial schematic diagram of a leak-proof threaded hole repair system according to another embodiment of the present invention.

[0036] Figure 6 for Figure 1 A partial schematic diagram of a leak-proof threaded hole repair system shown.

[0037] Figure 7 for Figure 1 A partial schematic diagram of a leak-proof threaded hole repair system shown.

[0038] Figure 8 for Figure 7 A partially enlarged view of a partial schematic diagram of the leak-proof threaded hole repair system shown.

[0039] Figure 9 This is a cross-sectional view of a leak-proof threaded hole repair system according to another embodiment of the present invention.

[0040] Figure 10 for Figure 9 A partial enlarged view of the leak-proof threaded hole repair system shown;

[0041] Figure 11 This is a cross-sectional view of a leak-proof threaded hole repair system according to another embodiment of the present invention.

[0042] Figure 12 for Figure 11 A partial enlarged view of the leak-proof threaded hole repair system shown;

[0043] Figure 13 This is a cross-sectional view of a leak-proof threaded hole repair system according to another embodiment of the present invention.

[0044] Figure 14 for Figure 13 A partial enlarged view of the leak-proof threaded hole repair system shown;

[0045] Figure 15 This is a cross-sectional view of a leak-proof threaded hole repair system according to another embodiment of the present invention.

[0046] Figure 16 A flowchart illustrating the steps of a leak-proof threaded hole repair process according to one embodiment;

[0047] Figure 17 A flowchart illustrating the steps of a leak-proof threaded hole repair process according to another embodiment. Detailed Implementation

[0048] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0049] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0051] This application provides a leak-proof threaded hole repair system. The aforementioned leak-proof threaded hole repair system includes a sealing device, a liquid injection device, and a pressurizing device; and / or, the sealing device includes a pressure plate and a sealing ring; and / or, the sealing ring is embedded within the pressure plate; and / or, the pressure plate and the sealing ring are used together to seal the leak-proof threaded hole of the casting; and / or, the pressure plate is provided with a pressurizing liquid injection plug; and / or, the pressurizing liquid injection plug is used to seal the leak-proof threaded hole during liquid injection and pressurization; and / or, the pressurizing liquid injection plug forms a pressurizing liquid injection channel; and / or, the pressurizing liquid injection channel is used to communicate with the leak-proof threaded hole of the casting; and / or, the sealing ring is sleeved on the pressurizing liquid injection plug; and / or, the pressure plate has a pressurizing liquid injection port; and / or, the pressurizing liquid injection port communicates with the pressurizing liquid injection channel; and / or, the injection end of the liquid injection device communicates with the injection port; and / or, the pressurizing device is used to pressurize the repair fluid in the leak-proof threaded hole.

[0052] The aforementioned leak-proof threaded hole repair system uses a clamping plate and a sealing ring to seal the leak-proof threaded hole in the casting. The clamping plate, sealing ring, and casting together create a sealed environment around the leak-proof threaded hole. The injection end of the injection device is connected to the injection port, meaning the injection device injects repair fluid into the leak-proof threaded hole through a pressurized injection channel. The pressurizing device pressurizes the repair fluid within the leak-proof threaded hole, effectively injecting the repair fluid into the leakage channel. This ensures the leak-proof threaded hole repair system effectively repairs the leakage channel, thereby guaranteeing the quality of the casting. Furthermore, the pressurizing device is used to inject the sealant into the leak channel under pressure. After the leak channel is filled, the sealant remains pressurized, meaning it maintains pressure. Since the opening area of ​​the leak channel is much smaller than the inner wall area of ​​the leaking threaded hole, and the sealant surface in the leak channel has tension, removing the sealant from the leaking threaded hole, such as by extracting it, has minimal impact on the sealant in the leak channel. The sealant remains stably stored within the leak channel, eliminating the need for heating and curing before removing it from the leaking threaded hole, thus avoiding the need for curing the sealant. The problem of glue buildup inside leaking threaded holes is addressed by using liquid sealant, which is easier to remove, thus improving the efficiency and reducing the difficulty of removing sealant from leaking threaded holes. Furthermore, a pressurizing device injects the sealant into the leakage channel under pressure, meaning the pressurized injection channel only seals leaking threaded holes, ignoring non-leaking threaded holes. This improves sealing efficiency and thus increases casting production efficiency. Simultaneously, ignoring non-leaking threaded holes avoids the need for subsequent sealant treatment, further enhancing casting production efficiency. Moreover, the leaking threaded hole sealing system completes the sealing process in one step, eliminating the need to construct sealing lines and reducing sealing costs, thereby lowering casting production costs.

[0053] To better understand the leak-proof threaded hole repair system of this application, the following further explanation is provided:

[0054] Please refer to the following: Figures 1-8One embodiment of the leak repair system 10 for threaded holes includes a sealing device 100, a liquid injection device 200, and a pressurizing device 300. The sealing device 100 includes a pressure plate 110 and a sealing ring 120. The sealing ring 120 is embedded in the pressure plate 110. The pressure plate 110 and the sealing ring 120 are used together to seal the leaking threaded hole of the casting. The pressure plate 110 is provided with a pressure injection plug 111. The pressure injection plug 111 is used to seal the leaking threaded hole during injection and pressurization. The pressure injection plug 111 forms a pressure injection channel 101, which is used to communicate with the leaking threaded hole of the casting. The sealing ring 120 is sleeved on the pressure injection plug 111. The pressure plate 110 has a pressure injection port 102, which is connected to the pressure injection channel 101. The injection end of the injection device 200 is connected to the injection port. The pressurizing device 300 is used to pressurize the leak-proof fluid in the leaking threaded hole.

[0055] The aforementioned leak-proof threaded hole repair system 10, with its clamping plate 110 and sealing ring 120, is used together to seal the leak-proof threaded hole of the casting. That is, the clamping plate 110, sealing ring 120, and casting together form a sealed environment around the leak-proof threaded hole. The injection end of the injection device 200 is connected to the injection port, meaning that the injection device 200 injects repair fluid into the leak-proof threaded hole through the pressurized injection channel 101. The pressurizing device 300 is used to pressurize the repair fluid in the leak-proof threaded hole, that is, the pressurizing device 300 is used to pressurize and inject the repair fluid into the leakage channel, ensuring the repair effect of the leak-proof threaded hole repair system 10 on the leakage channel, thereby ensuring the quality of the casting. Furthermore, the pressurizing device 300 is used to pressurize and inject the sealant into the leak channel. After the sealant fills the leak channel, it maintains pressure. Since the area of ​​the leak channel opening is much smaller than the inner circumferential wall area of ​​the leaking threaded hole, and the sealant surface in the leak channel has tension, removing the sealant from the leaking threaded hole, such as by extracting it, has minimal impact on the sealant in the leak channel. The sealant remains stably stored within the leak channel, thus eliminating the need for heating and curing before removing it from the leaking threaded hole, preventing the buildup of cured sealant. The problem of sealant accumulating inside leaking threaded holes, i.e., the sealant inside the leaking threaded holes is in liquid form, is relatively easy to remove, thus improving the efficiency of removing sealant from leaking threaded holes and reducing the difficulty of removing sealant. Furthermore, the pressurizing device 300 is used to pressurize and inject the sealant into the leakage channel; that is, the pressurized injection channel 101 only seals the leakage channel of the leaking threaded hole, while not sealing threaded holes, improving sealing efficiency and thus increasing the production efficiency of castings. At the same time, not sealing threaded holes avoids the need for subsequent treatment of sealant in non-leaking threaded holes, further improving the production efficiency of castings. In addition, the leaking threaded hole sealing system 10 completes the sealing process in one step, avoiding the need to build a sealing line, thus reducing sealing costs and consequently reducing the production cost of castings.

[0056] A typical leak repair line includes a leak repair cylinder. During leak repair, a large number of castings to be repaired are simultaneously immersed in the cylinder. Therefore, the cylinder has a large volume and occupies a large area. Furthermore, the leak repair line also involves manually removing the cured sealant accumulated in the threaded holes. During production, the area occupied by personnel and the large number of products is also large. In one embodiment, the leaking threaded hole repair system of this application only repairs threaded holes with leakage channels. Compared with the traditional leak repair cylinder, the leaking threaded hole repair system occupies a smaller area and avoids the problem of manually removing the cured sealant accumulated in the threaded holes, thereby further reducing the area occupied.

[0057] Please refer to the following: Figure 9 and Figure 10In one embodiment, the sealing device further includes a connector 130 and a sealing plug 140. The connector 130 is disposed between the sealing plug 140 and the pressurized injection plug. Both ends of the connector 130 are adapted to the sealing plug 140 and the pressurized injection plug, respectively. The connector 130 is detachably connected to the sealing plug 140 and the pressurized injection plug, respectively. The connector 130 can communicate with the sealing plug 140 and the pressurized injection plug, respectively. The sealing plug 140 is screwed to the leaking threaded hole. It is understandable that the casting has leaking threaded holes of different diameters. When the outer diameter of the pressure injection plug is smaller than the inner diameter of the leaking threaded hole, the sealing performance and connection stability of the pressure injection plug to the casting are poor. Therefore, a sealing plug 140 with an outer diameter that matches the leaking threaded hole and a connector 130 that matches the sealing plug 140 and the pressure injection plug respectively can be selected to enhance the compatibility between the leaking threaded hole repair system and the leaking threaded hole, thereby improving the sealing performance of the leaking threaded hole. This ensures the sealing effect of the sealing plug 140 on the leakage channel of the casting and ensures the connection stability between the leaking threaded hole repair system and the casting, thereby accurately repairing the leakage channel of the casting. The connector 130 is detachably connected to the sealing plug 140 and the pressurized injection plug, respectively. That is, when the pressurized injection plug is not compatible with the leaking threaded hole, the connector 130 and the sealing plug 140 can be installed on the pressurized injection plug, thereby improving the compatibility between the leaking threaded hole repair system and the leaking threaded hole. Similarly, when the sealing plug 140 is not compatible with the diameter of the leaking threaded hole, the connector 130 and the sealing plug 140 can be detached from the pressurized injection plug, ensuring the ease of use of the connector 130 and the sealing plug 140. Moreover, when the connector 130 and the sealing plug 140 are damaged, they can be replaced by disassembling and replacing them, ensuring the ease of maintenance of the sealing device and avoiding the problem of having to replace the leaking threaded hole repair system when the sealing plug 140 or the connector 130 is damaged, thereby reducing costs.

[0058] In one embodiment, the inner peripheral wall of the connector is provided with an internal thread, and the outer peripheral wall of the pressurized injection plug is provided with an external thread, with the internal and external threads corresponding to each other. It can be understood that the connector and the pressurized injection plug are screwed together, and the corresponding internal and external threads further ensure the compatibility between the connector and the pressurized injection plug, thereby improving the sealing performance of the leaking threaded hole. This ensures the sealing effect of the plug on the leakage channels of the casting and ensures the connection stability between the leaking threaded hole repair system and the casting, thus accurately repairing the leakage channels of the casting.

[0059] In one embodiment, the end of the connector facing away from the sealing plug is fastened to the pressurized injection plug. It is understood that this fastening of the connector's end away from the sealing plug to the pressurized injection plug ensures a tight connection between the connector and the pressurized injection plug, thereby enabling the leak-proof threaded hole repair system to accurately repair leaks in the casting.

[0060] In one embodiment, the inner peripheral wall of the connector is provided with a first snap-fit ​​groove, and the outer peripheral wall of the pressurized injection plug is provided with a first snap-fit ​​element, which is movably disposed in the first snap-fit ​​groove. It can be understood that the first snap-fit ​​element being movably disposed in the first snap-fit ​​groove fixes the connector to the pressurized injection plug, ensuring a tight connection between the connector and the pressurized injection plug, thereby enabling the leak-proof threaded hole repair system to accurately repair leaks in the casting. In one embodiment, the inner peripheral wall of the connector is provided with a second snap-fit ​​groove, and the outer peripheral wall of the pressurized injection plug is provided with a second snap-fit ​​element, which is movably disposed in the second snap-fit ​​groove. It can be understood that the second snap-fit ​​element being movably disposed in the second snap-fit ​​groove fixes the connector to the pressurized injection plug, ensuring a tight connection between the connector and the pressurized injection plug, thereby enabling the leak-proof threaded hole repair system to accurately repair leaks in the casting.

[0061] Please refer to the following: Figure 11 and Figure 12 In one embodiment, a secondary sealing ring 150 is embedded in the outer peripheral wall of the pressurized injection plug, and the secondary sealing ring 150 abuts against the inner peripheral wall of the leaking threaded hole. It can be understood that the secondary sealing ring 150 embedded in the outer peripheral wall of the pressurized injection plug and abutting against the inner peripheral wall of the leaking threaded hole means that the secondary sealing ring 150 is sandwiched between the pressurized injection plug and the leaking threaded hole, further ensuring the sealing performance of the leaking threaded hole repair system. The secondary sealing ring 150, the sealing ring, and the clamping plate reliably enclose the leaking threaded hole in a sealed environment, thereby ensuring the leak-proof effect of the leaking threaded hole repair system.

[0062] Please refer to the following: Figure 13 and Figure 14 In one embodiment, a secondary sealing groove 104 is formed on the outer peripheral wall of the pressurized injection plug, and a secondary sealing ring 150 is correspondingly disposed in the secondary sealing groove 104. It can be understood that the secondary sealing ring 150 is embedded in the secondary sealing groove 104, allowing the secondary sealing ring 150 to be reliably fixedly connected to the pressurized injection plug. This, in turn, allows the secondary sealing ring 150 to be reliably clamped between the pressurized injection plug and the inner peripheral wall of the leaking threaded hole, thereby ensuring the sealing effect of the secondary sealing ring 150 on the leaking threaded hole. Furthermore, since the secondary sealing groove 104 is recessed into the pressurized injection plug, it is easier to observe whether the position of the secondary sealing ring 150 on the pressurized injection plug is accurate, facilitating the adjustment of the position of the secondary sealing ring 150. This improves the installation convenience of the secondary sealing ring 150, and the installation accuracy of the secondary sealing ring 150 further ensures the sealing effect on the leaking threaded hole.

[0063] Please refer to the following: Figure 11 and Figure 12In one embodiment, a glass bead 160 is provided on the inner peripheral wall of the secondary sealing ring 150. The glass bead 160 is connected to the inner peripheral wall of the secondary sealing ring 150. The pressure injection plug has a positioning hole 105, and the glass bead 160 is adapted to the positioning hole 105. It can be understood that when the secondary sealing ring 150 is rotated until the glass bead 160 is embedded in the positioning hole 105, the pressure injection plug positions the secondary sealing ring 150 through the positioning hole 105, so that the secondary sealing ring 150 is reliably fixedly connected to the pressure injection plug, thereby making the secondary sealing ring 150 reliably clamped between the pressure injection plug and the inner peripheral wall of the leaking threaded hole, thus ensuring the sealing effect of the secondary sealing ring 150 on the leaking threaded hole. At the same time, since the glass bead 160 will interact with the glass bead 160 when it enters the positioning hole 105, the glass bead 160 will be able to seal the leaking threaded hole. The inner circumferential wall of the positioning hole 105 collided, producing a sound. The secondary sealing ring 150 was locally reduced in size due to the glass bead 160 entering the positioning hole 105. Therefore, it was easier to determine whether the glass bead 160 had entered the positioning hole 105, that is, to determine whether the position of the secondary sealing ring 150 fitted onto the pressurized injection plug was accurate. This facilitated the adjustment of the position of the secondary sealing ring 150, thereby improving the ease of installation of the secondary sealing ring 150. Furthermore, the installation accuracy of the secondary sealing ring 150 further ensured the sealing effect on the leaking threaded hole.

[0064] Please see Figure 15 In one embodiment, the sealing device further includes a brush sleeve 170, which is disposed at the end of the pressurized injection plug away from the clamping plate. The brush sleeve 170 is rotatably connected to the inner peripheral wall of the leaking threaded hole. It can be understood that after the pressurizing device injects the sealing fluid into the leakage channel of the casting, some sealing fluid remains in the leaking threaded hole. Therefore, after the pressurization operation is completed, the brush sleeve 170 rotates and abuts against the inner peripheral wall of the leaking threaded hole, drawing away a portion of the remaining sealing fluid. This reduces the need to remove the sealing fluid from the leaking threaded hole, thereby shortening the extraction time and improving the production efficiency of the casting.

[0065] Please see Figure 15 In one embodiment, the brush sleeve 170 includes a brush handle 171 and brush bristles 172. The brush bristles 172 are spaced apart on the outer peripheral wall of the brush handle 171, and the angle between the brush bristles 172 and the brush handle 171 is a preset angle. The brush handle 171 is located at the end of the pressure injection plug away from the clamping plate, and the brush handle 171 is fixedly connected to the pressure injection plug. The brush bristles 172 are rotatably connected to the inner peripheral wall of the leaking threaded hole. It can be understood that the brush bristles 172 abut against the inner peripheral wall of the leaking threaded hole at the preset angle, and the rotatable connection between the brush bristles 172 and the inner peripheral wall of the leaking threaded hole achieves the effect of removing the leakage liquid in the leaking threaded hole, and reduces the liquid extraction operation, thereby improving the production efficiency of the casting.

[0066] Please see Figure 15In one embodiment, the bristle sleeve 170 also includes a handle 173 connected to the end of the bristle handle 171 opposite to the bristles 172. It is understood that the handle 173 improves the ease of use of the bristle sleeve 170 and ensures the cleaning effect of the bristle sleeve 170 on the sealant for leaking threaded holes.

[0067] Please see Figure 15 In one embodiment, the pressurized injection plug 111 forms an insertion and removal channel 107, which communicates with the leaking threaded hole. The insertion and removal channel 107 is spaced apart from the pressurized injection channel. The brush handle 171 passes through the insertion and removal channel 107 and is slidably connected to the inner peripheral wall of the insertion and removal channel 107. The handle 173 and the brush bristles 172 are both located outside the insertion and removal channel 107. The handle 173 is located on the side of the clamping plate 110 away from the sealing ring 120. It is understood that during the injection and pressurization operations, a sealant is injected into the bottom of the leaking threaded hole. At this time, by fixing the handle 173, the brush sleeve 170 is suspended inside the leaking threaded hole. After the pressurization operation is completed, the brush handle 171 is slidably connected to the inner circumferential wall of the insertion and removal channel 107, that is, the brush sleeve 170 is moved towards the bottom of the inner circumferential wall of the leaking threaded hole until the brush sleeve 170 abuts against the bottom of the inner circumferential wall of the leaking threaded hole, and then the brush sleeve 170 adheres to the leaking threaded hole. When the sealing device 100 is separated from the casting, the excess sealant absorbed by the brush sleeve 170 is also carried away, reducing the cleaning work of residual sealant on the inner wall of the threaded hole. At the same time, the handle 173 is set on the side of the pressure plate 110 away from the sealing ring 120, that is, the handle 173 is exposed on the outside of the pressure plate 110, which makes it easy to insert, remove and rotate the brush sleeve 170, improving the ease of use of the brush sleeve 170, thus ensuring the ease of use of the leaking threaded hole repair system 10.

[0068] It is understood that in other embodiments, the brush handle is not limited to being slidably connected to the inner peripheral wall of the insertion / removal channel. In one embodiment, the brush handle is rotatably connected to the inner peripheral wall of the insertion / removal channel. When the brush sleeve abuts against the bottom end of the inner peripheral wall of the leaking threaded hole, the brush can be rotated by gripping the handle, allowing the brush to further absorb the sealant in the leaking threaded hole, further reducing the cleaning work required for residual sealant on the inner peripheral wall of the threaded hole.

[0069] Please see Figure 15In one embodiment, the leak-proof threaded hole repair system 10 further includes a positioning block 180, which is clamped between the handle 173 and the pressure plate 110. The positioning block 180 is movably connected to both the handle 173 and the pressure plate 110, and is used to position the handle 173. It can be understood that during the injection and pressurization operations, repair fluid is injected into the bottom of the leak-proof threaded hole. At this time, the positioning block 180 is clamped between the handle 173 and the pressure plate 110, thus fixing the handle 173 and suspending the brush sleeve 170 within the leak-proof threaded hole. After the pressurization operation is completed, the positioning block 180 is removed from the handle 173. At this time, the brush handle 171 is slidably connected to the inner peripheral wall of the insertion / removal channel 107, allowing the brush sleeve 170 to be positioned towards the leak-proof threaded hole. Move the brush sleeve 170 towards the bottom of the inner peripheral wall of the leaking threaded hole until it comes into contact with the bottom of the inner peripheral wall of the leaking threaded hole. Then, the brush sleeve 170 absorbs the sealant in the leaking threaded hole. The brush 172 can also be rotated by the handle 173, so that the brush 172 can further absorb the sealant in the leaking threaded hole. When the sealing device 100 is separated from the casting, the brush sleeve 170 will also take away the excess sealant, reducing the cleaning work of the residual sealant on the inner peripheral wall of the threaded hole.

[0070] Please see Figure 15 In one embodiment, the positioning block 180 is provided with a locking part 182, and the pressure plate 110 has a locking groove. The locking part 182 is correspondingly provided with the locking groove, and the locking part 182 is movably connected to the pressure plate 110. It can be understood that during the injection and pressurization operations, the locking part 182 is connected to the pressure plate 110, that is, the locking part 182 is located in the locking groove, so that the positioning block 180 is reliably fixedly connected to the pressure plate 110, and thus the handle 173 is reliably fixedly connected to the positioning block 180. This prevents the brush sleeve 170 from falling off and affecting the injection and pressurization operations, thus ensuring the leak repair effect. After the pressurization operation is completed, the locking part 182 is separated from the locking groove, that is, the positioning block 180 is separated from the pressure plate 110 and the handle 173. At this time, the brush handle 171 can slide... The brush sleeve 170 is movably connected to the inner peripheral wall of the insertion and removal channel 107. It can be moved towards the bottom of the inner peripheral wall of the leaking threaded hole until the brush sleeve 170 abuts against the bottom of the inner peripheral wall of the leaking threaded hole. Then the brush sleeve 170 absorbs the sealing fluid in the leaking threaded hole. The brush 172 can also be rotated by the handle 173, so that the brush 172 further absorbs the sealing fluid in the leaking threaded hole. When the sealing device 100 is separated from the casting, the brush sleeve 170 also carries away the excess sealing fluid, reducing the cleaning work of the residual sealing fluid on the inner peripheral wall of the threaded hole.

[0071] Please see Figure 15In one embodiment, the positioning block 180 is provided with a crank 181, which is connected to the positioning block 180, and the crank 181 forms a crank 181 hole. It can be understood that the positioning block 180 is more easily moved through the crank 181 and the crank 181 hole, that is, the crank 181 and the crank 181 hole improve the ease of use of the positioning block 180.

[0072] Please see Figure 15 In one embodiment, the handle 173 has a handle hole 106, which improves the ease of use of the brush sleeve.

[0073] Please see Figure 15 In one embodiment, the shank hole 106 is an arc-shaped hole.

[0074] Please see Figure 15 In one embodiment, the angle between the brush bristles 172 and the brush handle 171 is 0° to 90°. It can be understood that an angle of 0° to 135° between the brush bristles 172 and the brush handle 171 increases the area of ​​the inner peripheral wall of the leaking threaded hole that the brush bristles 172 can contact, thereby better ensuring the removal of the leak-proof fluid from the leaking threaded hole and reducing the need for pumping operations, thus improving the production efficiency of the casting.

[0075] In one embodiment, the sealing device further includes a cotton ball brush, which is disposed at the end of the pressurized injection plug away from the clamping plate and is rotatably connected to the inner peripheral wall of the leaking threaded hole. It can be understood that after the pressurizing device injects the sealing fluid into the leakage channel of the casting, some sealing fluid remains in the leaking threaded hole. Therefore, after the pressurization operation is completed, the cotton ball brush rotates and abuts against the inner peripheral wall of the leaking threaded hole, drawing away a portion of the remaining sealing fluid. This reduces the amount of sealing fluid that needs to be removed from the leaking threaded hole, thereby shortening the extraction time and improving the production efficiency of the casting.

[0076] In one embodiment, the sealing device further includes a telescopic component, with its two ends respectively passing through the pressure plate and the pressurized injection plug. The telescopic component is connected to the pressure plate, and the end of the telescopic component away from the pressure plate is connected to the bristle sleeve. The end of the telescopic component away from the pressure plate is used to drive the bristle sleeve to move towards or away from the pressure plate. It is understood that a sealing fluid is injected into the bottom of the leaking threaded hole. Therefore, during the injection and pressurization operations, the telescopic component does not extend or retract, leaving the brush sleeve suspended inside the leaking threaded hole to ensure the sealing effect on the leakage channel. After the pressurization operation is completed, the telescopic component moves the brush sleeve away from the pressure plate until it abuts against the bottom of the inner circumferential wall of the leaking threaded hole. The brush sleeve then absorbs the sealing fluid in the leaking threaded hole, removing at least a portion of it, thereby improving the production efficiency of the casting. After the brush sleeve has absorbed the sealing fluid, the end of the telescopic component away from the pressure plate and the brush sleeve are moved closer to the pressure plate until the brush sleeve returns to its original position. Then, the next round of sealing is performed, and the process is repeated. At the same time, the telescopic component passes through the pressure plate, with one end exposed outside the pressure plate, facilitating extension and retraction and improving the ease of use of the telescopic component. This ensures the ease of use of the leaking threaded hole sealing system.

[0077] In one embodiment, the clamping plate and the pressurized injection plug together form a telescopic channel, the telescopic component is located inside the telescopic channel, and the telescopic channel and the pressurized injection channel are spaced apart.

[0078] In one embodiment, the telescopic assembly includes a fixed tube and a movable tube, both of which are partially located within the telescopic channel. The fixed tube passes through the pressure plate, and the movable tube passes through the pressurized injection plug. The movable tube is slidably connected to the inner peripheral wall of the fixed tube. One end of the movable tube away from the fixed tube is connected to the bristle sleeve. The movable tube is used to drive the bristle sleeve to move towards or away from the pressure plate. It is understood that a sealing fluid is injected into the bottom of the leaking threaded hole. Therefore, during the injection and pressurization operations, neither the fixed tube nor the moving tube moves, leaving the brush sleeve suspended in the air. This avoids the brush sleeve coming into contact with the inner wall of the leaking threaded hole, thus ensuring the sealing effect of the leaking threaded hole sealing mechanism on the leakage channel. After the pressurization operation is completed, the fixed tube remains stationary, while the moving tube moves along the inner wall of the fixed tube toward the bottom of the inner wall of the leaking threaded hole until the brush sleeve comes into contact with the bottom of the inner wall of the leaking threaded hole. Then, the brush sleeve absorbs the sealing fluid in the leaking threaded hole, thereby removing at least a portion of the sealing fluid and improving the production efficiency of the casting.

[0079] In one embodiment, the fixed tube is equipped with a fastener, and the movable tube is formed with a fastening hole, with the fastener corresponding to the fastening hole. It can be understood that during the injection and pressurization operations, the fastener is located within the fastening hole, fixing the fixed tube and the movable tube together. The movable tube is connected to the brush sleeve, suspending the brush sleeve in mid-air, thus avoiding contact between the brush sleeve and the inner wall of the leaking threaded hole. This ensures the leak-sealing mechanism effectively seals the leaking channel. After the pressurization operation is completed, the fastener is separated from the fastening hole. The fixed tube does not move, and the movable tube moves along the inner wall of the fixed tube towards the bottom of the inner wall of the leaking threaded hole until the brush sleeve abuts against the bottom of the inner wall of the leaking threaded hole. The brush sleeve then absorbs the sealing liquid in the leaking threaded hole, carrying away at least a portion of the sealing liquid, thereby improving the production efficiency of the casting.

[0080] In one embodiment, the telescopic assembly further includes a fixed tube support. Both the fixed tube support and the fixed tube are located on the side of the pressure plate away from the sealing ring. The fixed tube support is connected to both the fixed tube and the pressure plate. The movable tube passes through the pressure plate, and a fastening hole is located at the end of the movable tube that passes through the pressure plate. A fastener is located at the end of the fixed tube adjacent to the movable tube. It can be understood that since both the fixed tube support and the fixed tube are located on the side of the pressure plate away from the sealing ring, meaning the fixed tube is outside the pressure plate, the fastener is also outside the pressure plate. The movable tube passes through the pressure plate, meaning the movable tube portion is outside the pressure plate. The fastening hole is located at the end of the movable tube that passes through the pressure plate, meaning the fastening hole is outside the pressure plate. Therefore, when the fastener is separated from the fastening hole, it is not necessary to open the pressure plate, improving the ease of use of the fastener.

[0081] Please see Figure 5 In one embodiment, the clamping plate 110 has a sealing groove 103, and the sealing ring 120 is embedded in the sealing groove 103. It can be understood that the sealing ring 120 being embedded in the sealing groove 103 ensures the sealing of the leaking threaded hole by the sealing ring 120 and the clamping plate 110, while reliably fixing the sealing ring to the clamping plate, thereby reliably abutting against the clamping plate and the part of the casting adjacent to the leaking threaded hole.

[0082] Please refer to the following: Figure 3 and Figure 4 In one embodiment, the length of the pressurized injection plug 111 is shorter than the depth of the leaking threaded hole. It is understood that the shorter length of the pressurized injection plug 111 ensures that the bottom of the inner peripheral wall of the leaking threaded hole has a larger space to accommodate the sealing fluid, thereby providing sealing fluid for pressurized injection into the leak channel and ensuring the sealing effect.

[0083] Please see Figure 5In one embodiment, the pressurized injection plug 111 is a threaded plug 1111, which is screwed to the inner circumferential wall of the leaking threaded hole. It can be understood that the threaded plug 1111 is used to screw to the inner circumferential wall of the leaking threaded hole, making the connection between the threaded plug 1111 and the inner circumferential wall of the leaking threaded hole relatively tight, thus ensuring the sealing between the threaded plug 1111 and the inner circumferential wall of the leaking threaded hole, thereby ensuring the injection and pressurization effects.

[0084] In one embodiment, the thread pitch at the end of the threaded plug near the pressure plate is greater than the thread pitch at the end away from the pressure plate. This means the thread pitch at the end away from the pressure plate is smaller, resulting in denser threads and ensuring the threaded plug's seal against the leaking threaded hole. The larger thread pitch at the end near the pressure plate further ensures the seal against the leaking threaded hole while also improving the efficiency of the threaded plug's connection to the inner circumferential wall of the leaking threaded hole, thus further enhancing the leak repair efficiency.

[0085] In one embodiment, the sealing ring is a rubber sealing ring or a silicone sealing ring, which ensures that the leaking threaded hole and leakage channel are in a sealed environment, thereby allowing the sealing ring to abut more tightly against the pressure plate and the casting surface adjacent to the leaking threaded hole.

[0086] In one embodiment, the leak-proof threaded hole repair system also includes a leak channel detector, which is used to detect whether there is a leak channel on the inner circumferential wall of the threaded hole. It can be understood that by detecting threaded holes with leak channels using the leak channel detector, the leak-proof threaded hole repair system can precisely target only those threaded holes with leak channels for subsequent repair operations, improving repair efficiency and saving repair fluid, thereby reducing repair costs. In other words, when the leak channel detector detects that the current threaded hole does not have a leak channel, the leak-proof threaded hole repair system skips that threaded hole.

[0087] In one embodiment, the leak-proof threaded hole repair system further includes a fixing component for securing the casting. This fixing component reliably positions the casting to be repaired, thereby precisely repairing the leakage channels and ensuring the repair effect. In this embodiment, the fixing component can be a clamp or a clamping mechanism. Specifically, the fixing component is a clamp. It can be understood that the clamp secures the casting, reliably positions it, and thus precisely repairs the leakage channels, ensuring the repair effect.

[0088] In one embodiment, the sealing device further includes a pressing drive mechanism. The power output end of the pressing drive mechanism is connected to the pressing plate. The pressing drive mechanism is used to drive the pressing plate to move towards or away from the casting. When the pressing drive mechanism drives the pressing plate to move towards the casting, the sealing ring abuts against the casting, so that the sealing ring is reliably sealed between the casting and the pressing plate, thereby achieving automatic pressing and sealing and reducing the intensity of manual labor.

[0089] In one embodiment, the injection device includes a liquid drive source for delivering the sealant to the pressurized injection port. It is understood that the sealant is a liquid that can be delivered to the pressurized injection port via the liquid drive source, and then injected into the leaking threaded hole through the injection channel. In this embodiment, the liquid drive source is a liquid pump, which delivers the sealant to the pressurized injection port.

[0090] Please refer to the following: Figure 3 and Figure 4 In one embodiment, the injection device 200 is disposed on the side of the clamping plate 110 away from the sealing ring 120. It can be understood that the injection device 200 is disposed on the side of the clamping plate 110 away from the sealing ring 120, that is, the injection device 200 is disposed outside the sealing device 100, so as to facilitate observation of the leak-proof fluid inside the injection device 200 and to facilitate timely replenishment of the injection device 200.

[0091] Please see Figure 1 In one embodiment, the injection device 200 is disposed at the upper end of the pressure plate 110. It can be understood that by disposing of the injection device 200 at the upper end of the pressure plate 110, when the injection device 200 injects liquid into the pressurized injection port 102 of the pressure plate 110, the sealant flows from the upper end to the lower end, reducing the loss of sealant during the injection process and contamination of the casting, thereby reducing the need for further cleaning of the casting.

[0092] In one embodiment, the injection device further includes an injector connected to the outlet of the liquid drive source. In this embodiment, the injector is a micro-injector. It is understood that when the volume of the leaking threaded hole is small, using a micro-injector to inject liquid into the leaking threaded hole prevents the repair fluid from overflowing. Therefore, a micro-injector is suitable for injecting liquid into smaller leaking threaded holes. In other embodiments, the liquid drive source can be omitted, and the injector is a burette. It is understood that the titration rate of a burette is adjustable and can be turned off at any time. Therefore, when the volume of the leaking threaded hole is large, using a burette for injection ensures injection efficiency while preventing the repair fluid from overflowing into the leaking threaded hole. Therefore, a burette is suitable for larger leaking threaded holes.

[0093] Please see Figure 2In one embodiment, the pressurizing device 300 is provided with a pressurizing air inlet pipe 310, which is movably disposed at the pressurizing liquid injection port 102 and movably connected to the pressure plate 110.

[0094] In one embodiment, the pressurizing device is further equipped with a pressure gauge, which is connected to the pressurized air inlet pipe. It can be understood that the pressure gauge is used to adjust the air pressure, so that the air pressure in the pressurized air inlet pipe connected to the pressure gauge is adjusted to a more suitable value.

[0095] In one embodiment, the pressurizing device also includes a switching valve, which is located between the pressure gauge and the inlet end of the pressurized air inlet pipe. It can be understood that the switching valve is positioned between the pressure gauge and the inlet end of the pressurized air inlet pipe; that is, the switching valve is only opened when the pressure gauge is adjusted to a suitable value, allowing gas to enter the pressurized air inlet pipe. This ensures that the sealing fluid effectively fills the leak channel, thus ensuring the leak sealing effect. Then, the switching valve closes, thereby achieving energy savings.

[0096] In one embodiment, the preset air pressure in the pressurized air intake pipe is 40N~60N. It can be understood that a preset air pressure of 40N~60N in the pressurized air intake pipe ensures that the sealing fluid fills the leakage channel effectively, thus guaranteeing the sealing effect, while also reducing the problem of sealing fluid splashing due to excessive air pressure. This reduces the need for subsequent cleaning due to sealing fluid splashing, improves casting production efficiency, and simultaneously reduces sealing fluid waste, saving on casting production costs.

[0097] Please see Figure 2 In one embodiment, the pressurizing device 300 is provided with a crank 320, which makes pressurization less strenuous and improves the ease of use of the pressurizing device 300.

[0098] Please see Figure 3 In one embodiment, the pressurizing device 300 has a pressurizing chamber 301, which is connected to the pressurizing air inlet pipe 310.

[0099] Please see Figure 3 In one embodiment, the pressurizing device 300 has a receiving cavity 302, which is connected to the pressurizing cavity 301. The receiving cavity 302 is used to receive the pressurizing air inlet pipe 310.

[0100] Please see Figure 3In one embodiment, the number of accommodating cavities 302 is at least two, and each accommodating cavity 302 is used to accommodate a corresponding pressurized air inlet pipe 310. It can be understood that the pressurizing device 300 can be equipped with at least two pressurized air inlet pipes 310, that is, the pressurizing device 300 can be used simultaneously to pressurize and inject liquid into at least two leakage channels, thereby improving the leakage repair efficiency and thus improving the production efficiency of castings.

[0101] In one embodiment, the leak-proof threaded hole repair system further includes a liquid extraction device, the extraction end of which is connected to the leak-proof threaded hole. It is understood that when a large amount of repair fluid is not pressurized and injected into the leakage channel within the leak-proof threaded hole, the liquid extraction device is used to remove the repair fluid. The repair fluid extracted by the extraction device can be reused, improving the utilization rate of the repair fluid, thereby reducing the consumption of the repair fluid and further reducing the production cost of the casting.

[0102] It should be noted that, in one embodiment, the injection device is used to extract the sealant from the leaking threaded hole. It can be understood that the injection device can also be an extraction device, as it is used to extract the sealant from the leaking threaded hole.

[0103] In one embodiment, the leak-proof threaded hole repair system also includes a cleaning device for cleaning the leaking threaded hole. It is understood that cleaning the inner circumferential wall of the leaking threaded hole avoids the need to clean the accumulated sealant inside the leaking threaded hole after subsequent heat curing, thereby improving repair efficiency and ultimately increasing the production efficiency of the casting.

[0104] It should also be noted that, since the area of ​​the leak channel opening is much smaller than the area of ​​the inner circumferential wall of the leaking threaded hole, and the sealing fluid in the leak channel has tension, the impact of the cleaning device on the sealing fluid in the leak channel when cleaning the leaking threaded hole is small and negligible. This means that the cleaning device will not wash away the sealing fluid in the leak channel when cleaning the leaking threaded hole.

[0105] In one embodiment, the leak-proof threaded hole repair system further includes a drying device for drying the leaking threaded hole. It can be understood that the drying process follows the cleaning process, and the drying device is used to dry the liquid on the inner wall of the leaking threaded hole, thereby improving the production efficiency of the casting.

[0106] It should be noted that when the amount of sealant injected into the leak channel without pressurization in the leaking threaded hole is small, a drying device should be used to blow away the sealant.

[0107] In one embodiment, the drying device is a drying assembly, which is used to dry the leaking threaded hole. It is understood that since the diameter of the leaking threaded hole is small, the drying assembly only needs to blow towards the leaking threaded hole, rather than drying the entire casting. This ensures the drying efficiency of the casting and is also energy-efficient.

[0108] In one embodiment, the drying component is an air gun with an inner diameter of 3mm to 15mm at the air outlet and an outer diameter of 7mm to 21mm at the air outlet. It is understood that the smaller outer diameter of the air gun facilitates its insertion into leaking threaded holes, allowing for more precise drying of the inner circumferential wall of the leaking threaded holes, thereby improving the production efficiency of the casting. In other embodiments, both the inner and outer diameters of the air outlet of the air gun are adjustable.

[0109] In one embodiment, the air gun's outlet has an inner diameter of 6 mm and an outer diameter of 10 mm.

[0110] In one embodiment, the air gun is at room temperature. It is understood that the air gun is used to dry the inner wall of the leaking threaded hole; room temperature is sufficient to dry it, and room temperature will not cause the sealant to harden or become brittle.

[0111] In one embodiment, the leak-sealed hole repair system also includes a heating device for heating and curing the sealant within the leak channel. It is understood that the sealant cannot cure naturally and requires heating to ensure the quality of the casting.

[0112] In one embodiment, the heating device is a drying mechanism. It is understood that the sealant is a liquid; therefore, by drying the sealant within the leakage channel using the drying mechanism, the curing efficiency of the sealant is improved, thereby increasing the production efficiency of the casting.

[0113] In one embodiment, the drying mechanism includes a conveyor belt and a drying assembly. The conveyor belt is used to transport the casting at a preset conveying speed. It is understood that the conveyor belt transports the casting from one end to the other, and the preset conveying speed ensures that the casting remains on the conveyor belt for a predetermined time. This prevents the sealing fluid from becoming incompletely cured due to insufficient heating, and also avoids the sealing fluid becoming brittle due to excessive heating, as well as the casting being damaged due to excessive heating. This improves the quality of the casting, automates production, and increases the collection efficiency of the cured casting.

[0114] In one embodiment, the drying component is a heating wire. It is understood that the temperature of the heating wire is controllable and the heating is relatively uniform. This ensures the heating and curing effect of the sealant while preventing the sealant from becoming brittle in certain areas due to localized overheating, and also avoids damage to the casting caused by localized overheating. Furthermore, the heating wire is readily available.

[0115] In one embodiment, the temperature of the heating wire is 80°C to 120°C. It is understood that when the heating wire temperature is 80°C to 120°C, within an appropriate heating time, it ensures that the sealant fully solidifies while preventing the sealant from becoming brittle due to excessive temperature. It also prevents damage to the casting due to excessive temperature, thus ensuring the quality of the casting. In other embodiments, the temperature of the heating wire is adjustable.

[0116] In one embodiment, the heating wire heats the casting for 15 to 20 minutes. It is understood that when the heating wire heats the casting for 15 to 20 minutes, within an appropriate heating temperature range, the sealant is ensured to be fully heated and cured. In other embodiments, the heating time of the heating wire on the casting is adjustable.

[0117] In one embodiment, the heating wire is a PTC thermistor heating wire. It is understood that PTC thermistor heating wires are non-flammable, odorless, and do not consume oxygen, offering high safety, good temperature control, and energy efficiency, making them suitable for automated production and thus saving labor costs.

[0118] In one embodiment, the heating wire is at least one of tungsten wire, nickel-chromium alloy wire, and iron-chromium-aluminum wire.

[0119] Please refer to the following: Figure 3 , Figure 4 as well as Figure 16 This application also provides a leak-proof threaded hole repair process. The above-described leak-proof threaded hole repair process uses the leak-proof threaded hole repair system 10 described in any of the above embodiments to repair leak-proof threaded holes in castings; the repair process includes the following steps:

[0120] S100. Obtain castings with leaking threaded holes. It is understood that repairing leaks only in castings with leaking threaded holes improves repair efficiency and saves repair fluid, thereby reducing the production cost of the castings.

[0121] S200, The sealing device 100 is used to seal the leaking threaded hole and the leaking channel. It can be understood that the leak is repaired only for the leaking channel, so the sealing operation is only performed on the leaking threaded hole and the leaking channel of the casting, thereby improving the repair efficiency.

[0122] S300. The injection device 200 is used to inject liquid into the leaking threaded holes. It can be understood that the pressurized injection channel 101 only repairs the leakage channel of the leaking threaded holes, while not repairing threaded holes that do not leak. Therefore, injecting liquid only into the leaking threaded holes improves the repair efficiency, thereby increasing the production efficiency of the castings. At the same time, not repairing the threaded holes that do not leak avoids the need to subsequently deal with the repair liquid inside the threaded holes, further improving the production efficiency of the castings.

[0123] S400, The pressurizing device 300 is used to pressurize the sealant in the leakage channel. It can be understood that after the injection device 200 injects the sealant into the leaking threaded hole, the pressurizing device 300 is used to pressurize the sealant and inject it into the leakage channel.

[0124] S500. A liquid extraction device is used to extract the sealing fluid from the leaking threaded hole. This means that when a large amount of sealing fluid is not pressurized and injected into the leakage channel, the extraction device removes it. The extracted sealing fluid can be reused, improving its utilization rate and reducing consumption, thus further lowering the production cost of the casting.

[0125] S600: A cleaning device is used to clean the sealant inside the leaking threaded hole. This cleaning of the inner wall of the leaking threaded hole avoids the need to clean the accumulated sealant after subsequent heating and curing, thus improving sealing efficiency and consequently increasing the production efficiency of the casting.

[0126] The aforementioned leak-proof threaded hole repair process only repairs the leaking channel. Furthermore, by extracting or drying the repair fluid while it is in liquid state, the repair efficiency is improved, thereby increasing the production efficiency of the castings. In addition, the use of an injection device 200 to inject fluid into the leak-proof threaded hole and a pressurizing device 300 to pressurize the repair fluid in the leaking channel completes the repair process in the leak-proof threaded hole repair system 10, avoiding the need to construct a repair line and reducing repair costs. The extraction and recovery of the repair fluid, along with the fact that it only repairs the leaking channel, saves on repair fluid, further reducing the production cost of the castings.

[0127] Please refer to the following: Figure 16 and Figure 17In one embodiment, before obtaining the casting with a leaking threaded hole, the leaking threaded hole repair process further includes: performing a leak test on the casting using a leak channel detector. It can be understood that threaded holes that fail the leak test are leaking threaded holes, i.e., threaded holes with leak channels. By detecting threaded holes with leak channels using the leak channel detector, the leaking threaded hole repair system can precisely target only threaded holes with leak channels for subsequent repair operations, improving repair efficiency and saving repair fluid, thereby reducing repair costs. In other words, when the leak channel detector detects that the current threaded hole does not have a leak channel, the leaking threaded hole repair system directly skips that threaded hole.

[0128] Please refer to the following: Figure 16 and Figure 17 In one embodiment, after obtaining the casting with the leaking threaded hole, and before sealing the leaking threaded hole and leakage channel of the casting using a sealing device, the leaking threaded hole repair process further includes fixing the casting with a fastener. It can be understood that the fastener is used to fix the casting to reliably position the casting to be repaired, thereby accurately repairing the leakage channel of the casting and ensuring the repair effect.

[0129] Please refer to the following: Figure 16 and Figure 17 In one embodiment, after cleaning the leak-proof threaded hole in the casting using a cleaning device, the leak-proof threaded hole repair process further includes drying the leak-proof threaded hole using a drying device. This ensures that the casting dries quickly.

[0130] Please refer to the following: Figure 16 and Figure 17 In one embodiment, after drying the leaking threaded hole using a drying device, the leak repair process further includes heating and curing the sealant in the leak channel using a heating device. It is understood that the heating and curing operation improves the curing efficiency of the sealant, thereby increasing the production efficiency of the casting. In this embodiment, the casting is transported to the corresponding position of the heating device via a conveyor line, allowing the heating device to heat and cure the sealant in the leak channel, thus improving the leak repair efficiency of the leaking threaded hole of a single casting.

[0131] Compared with the prior art, the present invention has at least the following advantages:

[0132] 1) The leak-proof threaded hole repair system 10 of the present invention uses a clamping plate 110 and a sealing ring 120 together to seal the leak-proof threaded hole of the casting. That is, the clamping plate 110, the sealing ring 120 and the casting together form a sealed environment around the leak-proof threaded hole. The injection end of the injection device 200 is connected to the injection port. That is, the injection device 200 injects repair fluid into the leak-proof threaded hole through the pressurized injection channel 101. The pressurizing device 300 is used to pressurize the repair fluid in the leak-proof threaded hole. That is, the pressurizing device 300 is used to pressurize and inject the repair fluid into the leakage channel, thus ensuring the repair effect of the leak-proof threaded hole repair system 10 on the leakage channel, thereby ensuring the quality of the casting.

[0133] 2) The leak-sealed thread hole repair system 10 of the present invention includes a pressurizing device 300 for injecting the repair fluid into the leak channel under pressure. After the leak channel is filled with the repair fluid, it maintains pressure within the channel. Since the area of ​​the leak channel opening is much smaller than the area of ​​the inner circumferential wall of the leak-sealed thread hole, and the surface of the repair fluid in the leak channel has tension, removing the repair fluid from the leak-sealed thread hole, such as by extracting the repair fluid, has minimal impact on the repair fluid in the leak channel. The repair fluid is stably stored within the leak channel. Therefore, it is not necessary to heat and cure the repair fluid before removing it from the leak-sealed thread hole, thus avoiding… This eliminates the problem of cured sealant accumulating inside leaking threaded holes, as the sealant inside the leaking threaded holes is in liquid form, making it easier to remove. This improves the efficiency of removing sealant from leaking threaded holes and reduces the difficulty of doing so. Furthermore, the pressurizing device 300 injects the sealant into the leakage channel under pressure. The pressurized injection channel 101 only seals leaking threaded holes, omitting sealant from non-leaking threaded holes, thus improving sealing efficiency and overall casting production efficiency. Simultaneously, omitting sealant from non-leaking threaded holes avoids the need for subsequent sealant treatment, further enhancing casting production efficiency.

[0134] 3) The leak-proof threaded hole repair system 10 of the present invention completes the repair process, avoids the need to build a repair line, thereby reducing the repair cost and thus reducing the production cost of castings.

[0135] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A leak-proof threaded hole repair system, characterized in that, include: A sealing device includes a pressure plate and a sealing ring. The sealing ring is embedded in the pressure plate. The pressure plate and the sealing ring are used together to seal the leaking threaded hole of the casting. The pressure plate is provided with a pressure injection plug. The pressure injection plug is used to block the leaking threaded hole during injection and pressurization. The pressure injection plug forms a pressure injection channel, which is used to communicate with the leaking threaded hole. The sealing ring is sleeved on the pressure injection plug. The pressure plate has a pressure injection port, which is connected to the pressure injection channel. The liquid injection device is connected to the pressurized liquid injection port at its injection end. A pressurizing device is used to pressurize the sealant fluid inside the leaking threaded hole; The outer peripheral wall of the pressurized injection plug is provided with a secondary sealing ring, which is used to abut against the inner peripheral wall of the leaking threaded hole; the outer peripheral wall of the pressurized injection plug is provided with a secondary sealing groove, and the secondary sealing ring is correspondingly disposed in the secondary sealing groove; The sealing device further includes a bristle sleeve, which is disposed at the end of the pressurized injection plug away from the pressure plate. The bristle sleeve is rotatably connected to the inner peripheral wall of the leaking threaded hole. The bristle sleeve includes a bristle handle and bristles. The bristles are spaced apart on the outer peripheral wall of the bristle handle. The bristle handle is disposed at the end of the pressurized injection plug away from the pressure plate. The bristles are rotatably connected to the inner peripheral wall of the leaking threaded hole.

2. The leak-proof threaded hole repair system according to claim 1, characterized in that, The liquid injection device is located on the side of the clamping plate away from the sealing ring.

3. The leak-proof threaded hole repair system according to claim 2, characterized in that, The liquid injection device is located at the upper end of the clamping plate.

4. The leak-proof threaded hole repair system according to claim 1, characterized in that, The clamping plate has the sealing groove, and the sealing ring is embedded in the sealing groove.

5. The leak-proof threaded hole repair system according to claim 1, characterized in that, The leak-proof threaded hole repair system also includes a cleaning device for cleaning the leak-proof threaded hole.

6. The leak-proof threaded hole repair system according to claim 1, characterized in that, The leak-proof threaded hole repair system also includes a drying device for drying the leak-proof threaded hole.

7. The leak-proof threaded hole repair system according to claim 1, characterized in that, The leak-proof threaded hole repair system also includes a drive device, the power output end of which is connected to the pressure plate. The drive device is used to drive the sealing ring and the pressurized injection plug to abut against the casting.

8. The leak-proof threaded hole repair system according to claim 1, characterized in that, The pressurized injection plug is a threaded plug, which is used to screw into the inner circumferential wall of the leaking threaded hole.

9. The leak-proof threaded hole repair system according to claim 1, characterized in that, The sealing ring is a rubber sealing ring.

10. A leak-proof threaded hole repair process, characterized in that, The leaking thread hole repair system according to any one of claims 1 to 9 is used to repair the leaking thread hole in the casting; the repair process includes the following steps: Obtain the casting having the leaking threaded hole; The sealing device is used to seal the leaking threaded hole and the leakage channel. The liquid injection device is used to inject liquid into the leaking threaded hole; The pressurizing device is used to pressurize the sealant in the leakage channel; The leak-proof fluid in the leaking threaded hole is extracted using a liquid extraction device. The leak-proof fluid inside the leaking threaded hole is cleaned using a cleaning device.

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