A cast iron pipe fitting repair

Abstract

The application belongs to the technical field of cast iron pipe fittings, and particularly relates to a cast iron pipe fitting repairing part, which comprises a pipe to be repaired, a repairing mechanism, a fixing mechanism, a bending mechanism and a positioning mechanism, a repairing opening is arranged on the pipe to be repaired and located at a repairing position; the repairing mechanism comprises a repairing block filled in the repairing opening and used for repairing the pipe to be repaired, a buffer block arranged on the side of the repairing block and used for sealing, a fixing head connected to the repairing block and used for installation and positioning, a sealing groove arranged between the repairing block and the pipe to be repaired, and a sealing belt one arranged in the sealing groove and used for multiple sealing. In the application, the leaking position can be opened by the repairing mechanism, and then the repairing mechanism is used for filling and sealing repair. Compared with direct external wrapping and covering repair, the scheme is more closely combined with the original pipe fitting, the repairing effect is better, the subsequent leakage phenomenon is greatly reduced, and the reliability and feasibility of the repairing part are improved.

Description

Technical Field

[0001] This invention relates to the field of cast iron pipe fittings technology, specifically to a cast iron pipe fitting repair component. Background Technology

[0002] Currently, ductile iron pipes are widely used in various municipal pipeline projects, electromechanical installation projects, and outdoor pipeline installation projects in China. Ductile iron pipes are made by adding magnesium or rare earth magnesium alloy spheroidizing agents to molten iron before casting, causing graphite to spheroidize, reducing stress concentration, and giving the pipes advantages such as high strength, high elongation, impact resistance, corrosion resistance, and good sealing performance. The inner wall is lined with cement mortar, which improves the water supply environment, increases water supply capacity, and reduces energy consumption. The pipe ends use flexible joints, and the pipe itself has a large elongation, making the pipeline flexible and able to work together with the surrounding soil in buried pipelines, improving the stress state of the pipeline and thus improving the reliability of the pipeline network. Therefore, ductile iron pipes are commonly used as main pipes in my country's water supply industry.

[0003] Cast iron pipe fittings are prone to leakage after prolonged use. Existing repair parts are generally applied by directly covering the leak, but this method inevitably leaves gaps, which can lead to further leakage and results in poor stability. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted in this invention is as follows: A cast iron pipe fitting repair component includes: a pipe fitting to be repaired, a repair mechanism, a fixing mechanism, a bending mechanism, and a positioning mechanism. The pipe fitting to be repaired has a repair opening located at the repair site. The repair mechanism includes a repair block filling the repair opening for repairing the pipe fitting, a buffer block disposed on the side of the repair block for sealing, a first fixing head connected to the repair block for installation and positioning, a sealing groove formed between the repair block and the pipe fitting to be repaired, a sealing strip disposed in the sealing groove for multiple sealing, and a sealing strip connected to one side of the sealing strip. The system includes a multi-layered sealing filler tape; the fixing mechanism comprises a fixing plate fixed to the outside of the pipe to be repaired, an armored strip disposed on the outside of the fixing plate, an anti-corrosion layer sprayed on the outside of the armored strip, a second fixing head connected to the end of the fixing plate for fastening, a fastening bolt connected between the fixing heads for fixing, and a limiting head and a limiting cylinder installed inside the fixing head for limiting movement; the bending mechanism is disposed on the fixing plate for bending the pipe to be fixed; the positioning mechanism is wrapped between the pipe to be repaired and the fixing plate for fixing and sealing by the fixing mechanism.

[0006] By adopting the above technical solution, an opening can be made at the leak point, and then the repair mechanism can be used to fill and seal the leak. Compared with direct external covering repair, this solution integrates more closely with the original pipe fitting, resulting in better repair effect and greatly reducing the occurrence of subsequent leaks. In addition, the repair mechanism can be stably fixed to the pipe fitting to be repaired. Compared with the existing fixing structure, the use of the limiting head and limiting cylinder keeps the fixing head vertical and tight, resulting in better and more stable fixing effect. Furthermore, the elastic fixing plate, used in conjunction with the armor belt, can adaptively wrap and fix the pipe according to its size.

[0007] In a preferred embodiment, the present invention may be further configured such that the bending mechanism includes a connecting strip connected between the fixed plates, a protective ring sleeved on the connecting strip, and a bending groove formed on the protective ring.

[0008] By adopting the above technical solution, the repair component can repair and fix some bent pipe fittings. The denser the bending mechanism is set on the fixing plate, the better the deformation adaptation effect, thereby improving the practicality and feasibility of the repair component.

[0009] In a preferred embodiment, the present invention may be further configured such that the positioning mechanism includes a side opening on the side of the fixing plate, a fixing strap partially disposed outside the side opening, and a fixing line for fixing the fixing strap.

[0010] By adopting the above technical solutions, the fixing effect of the fixing mechanism can be further improved, and its service life can be extended.

[0011] In a preferred embodiment, the present invention may be further configured such that: a fixing groove for inserting the fixing head is provided on the fixing plate, and a storage groove for the filling strip is also provided on the fixing plate.

[0012] By adopting the above technical solution, the repair block can be fixed and the sealing strip can be further sealed, resulting in better practical effect.

[0013] In a preferred embodiment, the present invention may be further configured such that: a second sealing strip is provided on the outer side of the filling strip for bonding the first sealing strip.

[0014] By adopting the above technical solution, the sealing effect of one part of the sealing strip can be further improved, making it easier to promote and use.

[0015] In a preferred embodiment, the present invention can be further configured such that: the limiting cylinder has a cavity for the limiting head to be inserted and limited, for maintaining the vertical fastening of the second fixing head.

[0016] By adopting the above technical solution, the fixing head can be kept stable and reliable during tightening, thus improving the fixing effect of the repaired parts.

[0017] In a preferred embodiment, the present invention may be further configured such that: an anti-slip washer is provided on the inner side of the fixing strap, and another part of the fixing strap wraps around the pipe fitting to be repaired.

[0018] By adopting the above technical solution, an anti-slip washer can be provided on the inner side of the fixing strap, and another part of the fixing strap can be wrapped around the pipe to be repaired. The anti-slip washer can further improve the stability of the fixing.

[0019] In a preferred embodiment, the present invention may be further configured such that: the inner side of the protective ring is provided with an inner sheath, and the protective ring is arranged in a semi-circular shape between the fixing plates.

[0020] By adopting the above technical solution, the protective ring can be prevented from causing hard damage to the connecting strip, and the inner sheath is made of rubber, which provides good padding protection.

[0021] The above-described technical solution of the present invention has the following beneficial technical effects: 1. In this invention, the leak can be opened by the repair mechanism, and then filled and sealed by the repair mechanism. Compared with direct external covering repair, this solution is more closely integrated with the original pipe fitting, has a better repair effect, greatly reduces the occurrence of subsequent leaks, and thus improves the reliability and feasibility of the repair.

[0022] 2. In this invention, the repair mechanism can be stably fixed to the pipe fitting to be repaired through the fixing mechanism. Compared with the existing fixing structure, the use of the limiting head and the limiting cylinder makes the fixing head keep vertical and tight, resulting in better and more stable fixing effect. In addition, the elastic fixing plate is used with the armor belt, which can adaptively wrap and fix according to the pipe size, thereby improving the practicality of the repair part.

[0023] 3. In this invention, the bending mechanism enables the repair component to repair and fix some bent pipe fittings. The denser the bending mechanism is set on the fixing plate, the better the deformation adaptation effect, thereby improving the practicality and feasibility of the repair component. In addition, the positioning mechanism can further improve the fixing effect of the fixing mechanism and extend its service life. Attached Figure Description

[0024] Figure 1 This is a side sectional view of an embodiment of the present invention; Figure 2 This is an enlarged view of point A in one embodiment of the present invention; Figure 3 This is an enlarged view of section B in one embodiment of the present invention; Figure 4 This is a front view of an embodiment of the present invention; Figure 5This is a side sectional view of a bending mechanism according to an embodiment of the present invention; Figure 6 This is a schematic diagram of a protective ring according to an embodiment of the present invention; Figure 7 This is a partial side sectional view of an embodiment of the present invention.

[0025] Figure label: 100. Pipe fittings to be replaced; 110. Repairing openings; 200. Repair mechanism; 210. Repair block; 220. Buffer block; 230. First fixing head; 240. Sealing groove; 250. Sealing strip one; 260. Filler strip; 261. Sealing strip two; 300. Fixing mechanism; 310. Fixing plate; 320. Armor belt; 330. Anti-corrosion layer; 340. Second fixing head; 350. Fastening bolt; 360. Limiting head; 370. Limiting cylinder; 400 Bending mechanism; 410 Connecting bar; 420 Protective ring; 421 Inner sleeve; 430 Bending groove; 500, Positioning mechanism; 510, Side opening; 520, Fixing strap; 530, Fixing line. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0027] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0028] The following describes, with reference to the accompanying drawings, some embodiments of a cast iron pipe repair component provided by the present invention. Example

[0029] Combination Figure 1-7 As shown, the present invention provides a cast iron pipe fitting repair component, comprising: a pipe fitting to be repaired 100, a repair mechanism 200, and a fixing mechanism 300. The pipe fitting to be repaired 100 has a repair opening 110 located at the repair site. The leakage and damage of the pipe fitting to be repaired 100 is often an irregular gap. In order to improve the repair effect, a repair opening 110 needs to be opened in advance at the damage site. The repair block 210 is adapted to the repair opening 110 and can be filled and repaired. It should be noted that the side of the repair opening 110 is inclined, that is, the outer side of the repair block 210 is inclined inward from the outside to the inside. This can prevent the repair block 210 from entering the interior of the pipe fitting to be repaired 100 during installation. It can be directly filled and fixed inside the repair opening 110, making the repair operation more convenient and thus improving the reliability of the repair component.

[0030] Combination Figure 1-2 As shown, the repair mechanism 200 includes a repair block 210 for repairing the pipe fitting 100, which fills the repair opening 110; a buffer block 220 for sealing the side of the repair block 210; a first fixing head 230 connected to the repair block 210 for installation and positioning; a sealing groove 240 formed between the repair block 210 and the pipe fitting 100; a sealing strip 250 for multiple sealing, which is disposed in the sealing groove 240; and a filling strip 260 connected to the side of the sealing strip 250 for multiple sealing. The repair mechanism 200... An opening can be made at the leak point, and then the repair mechanism 200 can fill and seal the leak. Compared to direct external covering repair, this method integrates more closely with the original pipe fitting, resulting in better repair performance and significantly reducing the occurrence of subsequent leaks. Specifically, the shape of the repair block 210 can be selected and set according to the opening shape of the repair opening 110, requiring only proper filling. The buffer block 220 is made of corrosion-resistant rubber and can fill and compensate for any small gaps between the repair opening 110 and the repair block 210, thereby improving the repair block's sealing effect. The repair block 210 is compatible with the pipe fitting 100, and the buffer block 220 also serves as a seal to prevent fluid leakage from the pipe fitting 100 to be repaired. Furthermore, the inner side of the repair block 210 has an anti-corrosion layer made of the same material as the pipe fitting 100, which prevents fluid passing through the pipe fitting 100 from damaging the repair block 210, thereby improving the service life of the repaired component. The first fixing head 230 has a raised structure, facilitating installation on the fixing plate 310. When the fixing mechanism 300 is fixed, it can stably and reliably fix the repair mechanism 200 to the pipe fitting 100. Repair is completed on the repaired pipe fitting 100. The sealing groove 240 is formed on the repair block 210 and the pipe fitting 100 to be repaired. After connection, it becomes an annular groove for the sealing strip 250 to be accommodated, and seals the gap between the buffer block 220 and the pipe fitting 100 to be repaired again. The sealing groove 240 uses a rubber sealing gasket, which has a good sealing effect. The filling strip 260 is a buffer filling gasket. After being compressed, it can fit against the outside of the sealing strip 250, improve the protection effect of the sealing strip 250, and at the same time improve the sealing performance and prevent leakage.

[0031] Combination Figure 1 and 3As shown, the fixing mechanism 300 includes a fixing plate 310 fixed to the outside of the pipe fitting 100 to be repaired, an armor belt 320 disposed outside the fixing plate 310, an anti-corrosion layer 330 sprayed on the outside of the armor belt 320, a second fixing head 340 connected to the end of the fixing plate 310 for fastening, a fastening bolt 350 connected between the second fixing heads 340 for fixing, and a limiting head 360 and a limiting cylinder 370 installed inside the second fixing head 340 for limiting. The fixing mechanism 300 can stably fix the repair mechanism 200 to the pipe fitting 100 to be repaired. Compared with the existing fixing structure, the use of the limiting head 360 and the limiting cylinder 370 provides a more stable fixation. The cylinder 370 keeps the second fixing head 340 vertically and securely, resulting in better and more stable fixing. Additionally, the elastic fixing plate 310, used in conjunction with the armor strap 320, can adaptively wrap and fix the pipe according to its size. Specifically, the fixing plate 310 has a fixing groove for the first fixing head 230 to insert into, and also a storage groove for the filling tape 260. The fixing plate 310 is made of a highly elastic metal plate material, which can adaptively wrap around the outside of the pipe fitting 100 to be repaired. When the fixing plate 310 has high strength due to its thickness, multiple fixing plates 310 can be stacked. The components require a fixed connection to ensure a stable connection for the second fixing head 340. The fixing plate 310 has a partition-like structure, connected by a bending mechanism 400, facilitating deformation and enhancing practicality. The limiting cylinder 370 has a cavity for the limiting head 360 to insert and limit its position, maintaining the vertical tightness of the second fixing head 340. The armor belt 320 is a chain-type armor layer that secures the fixing plate 310. The armor belt 320 can be wrapped separately around the outside of the fixing plate 310 for good fixation. The anti-corrosion layer 330 is an anti-corrosion coating, an adhesive layer, which protects the armor belt. The 320 and the fixing plate 310 are protected from corrosion. The second fixing head 340 is connected to both ends of the fixing plate 310. When the second fixing head 340 is tightened by the fastening bolt 350, the limiting head 360 will enter the interior of the limiting cylinder 370 to keep it vertical, so that the second fixing head 340 is parallel and stable, preventing tilting under force, which could lead to breakage or insufficient tightening force. This is quite reasonable. The limiting head 360 and the limiting cylinder 370 are bolted to the inside of the second fixing head 340 and are set accordingly, which has a limiting effect on the tightening of the second fixing head 340. This is also quite reasonable. Example

[0032] Combination Figure 4-6 As shown, based on Embodiment 1, the bending mechanism 400 is disposed on the fixing plate 310 for fixing the bent pipe fitting. The bending mechanism 400 allows the repair component to repair and fix some bent pipe fittings 100 to be repaired. The denser the bending mechanism 400 is disposed on the fixing plate 310, the better the deformation adaptation effect and the higher the practicality.

[0033] Specifically, the bending mechanism 400 includes a connecting strip 410 connected between the fixed plates 310, a protective ring 420 sleeved on the connecting strip 410, and a bending groove 430 formed on the protective ring 420. The connecting strip 410 is connected by threaded insertion or welding, so that the connecting strip 410 is evenly distributed between the fixed plates 310, connecting the two fixed plates 310 together. The protective ring 420 is a ring-shaped structure sleeved on the outside of the connecting strip 410. When the connecting strip 410 is connected, the protective ring 420 can be installed on the connecting strip 410 to protect the connecting strip 410 and improve its strength. The bending groove 430 allows the protective ring 420 to bend and deform along the bending groove 430 when under force, ensuring the smoothness of deformation and making it more stable and reliable in use.

[0034] On the other hand, a second sealing strip 261 is provided on the outside of the filler strip 260 to bond the first sealing strip 250. The second sealing strip 261 is made of the same material as the first sealing strip 250 and can be bonded together after extrusion, thereby further improving the sealing effect of the first sealing strip 250, which is more reasonable.

[0035] Furthermore, the inner side of the protective ring 420 is provided with an inner sleeve 421, and the protective ring 420 is arranged in a semi-circular shape between the fixing plates 310. The inner sleeve 421 can prevent the protective ring 420 from causing hard damage to the connecting strip 410. The inner sleeve 421 is made of rubber and has a good padding effect. Example

[0036] Combination Figure 4 As shown, in the above embodiment, the positioning mechanism 500 is wrapped between the pipe fitting to be repaired 100 and the fixing plate 310, and is used to fix and seal the fixing mechanism 300. The positioning mechanism 500 can further improve the fixing effect of the fixing mechanism 300 and extend its service life.

[0037] Specifically, the positioning mechanism 500 includes a side opening 510 on the side of the fixing plate 310, a fixing band 520 partially disposed outside the side opening 510, and a fixing line 530 for fixing the fixing band 520. The side opening 510 has a ring-shaped structure, which can wrap the fixing plate 310 and the pipe fitting 100 to be repaired, preventing the fixing plate 310 from moving on the pipe fitting 100 to be repaired, thereby improving the stability and reliability of the repaired part. The fixing line 530 can be a tie wire, a rope, or a fixing structure with the same structure as the fixing mechanism 300, which only needs to be tightened for fixation. The inner side of the fixing band 520 is provided with an anti-slip washer, and another part of the fixing band 520 wraps around the pipe fitting 100 to be repaired. The anti-slip washer can further improve the stability of the fixation.

[0038] The working principle and usage process of this invention are as follows: First, a repair opening 110 is made at the leak or damage point on the pipe fitting 100 to be repaired. Then, a repair block 210 that matches the repair opening 110 is selected and filled in. Next, the sealing tape 250 is placed inside the sealing groove 240. The fixing plate 310 is fitted onto the outside of the pipe fitting 100 to be repaired, so that the first fixing head 230 is snapped onto the fixing plate 310. At the same time, the filling tape 260, along with the sealing tape 261, is tightly attached to the sealing tape 250. After sealing, the two fixing plates 310 are connected and fixed by fastening the fastening bolts 350. When encountering a bent pipe fitting 100 to be repaired, the fixing plate 310 is pressed and deformed as needed under the action of the bending mechanism 400 to continue the repair work. Finally, the fixing tape 520 is fitted between the fixing plate 310 and the pipe fitting 100 to be repaired, and the fixing tape 520 is fixed by the fixing line 530.

[0039] In this invention, the term "a plurality of" refers to two or more unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. The terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "linked" can be a direct connection or an indirect connection via an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0041] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A repair component for cast iron pipe fittings, characterized in that, include: The pipe fitting to be repaired (100) has a repair opening (110) located at the repair site. The repair mechanism (200) includes a repair block (210) filled in the repair opening (110) for repairing the pipe fitting (100) to be repaired, a buffer block (220) disposed on the side of the repair block (210) for sealing, a first fixing head (230) connected to the repair block (210) for installation and positioning, a sealing groove (240) opened between the repair block (210) and the pipe fitting (100) to be repaired, a sealing strip (250) disposed in the sealing groove (240) for multiple sealing, and a filling strip (260) connected to the side of the sealing strip (250) for multiple sealing. The fixing mechanism (300) includes a fixing plate (310) fixed to the outside of the pipe fitting (100) to be repaired, an armor belt (320) disposed outside the fixing plate (310), an anti-corrosion layer (330) sprayed on the outside of the armor belt (320), a second fixing head (340) connected to the end of the fixing plate (310) for fastening, a fastening bolt (350) connected between the second fixing heads (340) for fixing, and a limiting head (360) and a limiting cylinder (370) installed inside the second fixing head (340) for limiting; the fixing plate (310) is provided with a fixing groove for the first fixing head (230) to be inserted, and the fixing plate (310) is also provided with a storage groove for the filling belt (260) to be disposed; The bending mechanism (400) includes a connecting strip (410) connected between adjacent fixed plates (310), a protective ring (420) sleeved on the connecting strip (410), and a bending groove (430) opened on the protective ring (420). The connecting strip (410) adopts a threaded or welded connection method, so that the connecting strip (410) is evenly distributed between the fixed plates (310) to connect the two fixed plates (310). The protective ring (420) is a ring structure sleeved on the outside of the connecting strip (410). When the connecting strip (410) is connected, the protective ring (420) is installed on the connecting strip (410). The bending groove (430) is used to make the protective ring (420) bend and deform along the bending groove (430) when subjected to force. A positioning mechanism (500) is fitted between the pipe fitting to be repaired (100) and the fixing plate (310) for fixing and sealing the fixing mechanism (300).

2. The cast iron pipe fitting repair component according to claim 1, characterized in that, The positioning mechanism (500) includes a side opening (510) on the side of the fixing plate (310), a fixing strap (520) partially disposed outside the side opening (510), and a fixing line (530) for fixing the fixing strap (520).

3. A repair fitting for cast iron pipes according to claim 1, characterized in that, The outer side of the filler strip (260) is also provided with a second sealing strip (261) for bonding the first sealing strip (250).

4. A repair fitting for cast iron pipes according to claim 1, characterized in that, The limiting cylinder (370) has a cavity for the limiting head (360) to be inserted and limited, which is used to keep the second fixing head (340) vertically and securely fixed.

5. A cast iron pipe fitting repair component according to claim 2, characterized in that, The inner side of the fixing strap (520) is provided with an anti-slip pad, and another part of the fixing strap (520) is wrapped around the pipe fitting (100) to be repaired.

6. A repair fitting for cast iron pipes according to claim 1, characterized in that, The inner side of the protective ring (420) is provided with an inner sheath (421), and the protective ring (420) is arranged in a semi-circular shape between the fixing plates (310).

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