Device and method for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry

Abstract

The present invention provides a device and method for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry, which includes a rubber ball made of vulcanized rubber, the interior of the rubber ball is filled with magnetic powder; the rubber ball and the magnetic powder inside the rubber ball are matched with a magnetizing device for magnetizing the rubber ball; the rubber ball is connected to a rubber ball launching device for launching the rubber ball and sending it into the crack; it also includes magnetic slurry, the interior of the magnetic slurry is uniformly mixed with water-swellable rubber; the magnetic slurry is connected to a grouting device for grouting. The water-swellable rubber used is a rubber that can be well integrated with the magnetic slurry. The rubber will expand and deform 2-3 times in about 12 hours after contacting water, and fill all irregular surfaces, cavities and gaps of the cracks to be repaired, while generating huge contact pressure, improving the shear strength of the crack interface, making the repair area not easy to fall off, and completely preventing leakage.

Description

Technical Field

[0001] The invention belongs to the technical field of underwater repair, and relates to a device and a method for repairing underwater inverted cracks by using a water-swelling rubber-magnetic slurry mixture. Background Art

[0002] The existing underwater inverted crack repair technology has the following defects when using ordinary mortar to repair underwater inverted cracks: it is easy to disperse into muddy water, sink without adsorption, the slurry sinks freely due to gravity, the filling rate is low, it is difficult for ordinary liquid to enter the micro cracks for filling, and the drainage is insufficient. When repairing underwater inverted cracks, ordinary mortar is difficult to repair, which will cause waste of resources, high cost, and difficult to repair the edges of the cracks. It is even impossible to repair the local tiny extended cracks around the main cracks, and the repair effect is not ideal.

[0003] In addition, in the existing underwater inverted crack repair technology, the repair material is directly attached to the outside of the crack surface, and basically does not penetrate into the inner layer of the crack. The shear strength of the interface between the old rock and soil area on the surface of the crack edge and the new rock and soil area in the inner layer farther away from the crack edge cannot be guaranteed. This is mainly because after the repair material is attached to the old rock and soil area on the surface of the crack, its gravity is increased. Therefore, after the repair material repairs the crack, it may fall from the interface between the new and old rock and soil areas along with the old rock and soil area on the surface, which not only poses a safety hazard but also fails to meet engineering requirements. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a device and method for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry. The water-swellable rubber used is a type of rubber that can be well integrated with the magnetic slurry. The rubber expands and deforms by 2-3 times in about 12 hours after coming into contact with water, and fills all irregular surfaces, holes and gaps of the cracks to be repaired. At the same time, it generates huge contact pressure, improves the shear strength of the crack interface, makes the repair area not easy to fall off, completely prevents leakage, is safe and reliable, and is simple and convenient to operate, thereby achieving a good effect of underwater crack repair.

[0005] In order to realize the above technical features, the object of the present invention is achieved as follows: a device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry, comprising a rubber ball made of vulcanized rubber, the interior of the rubber ball being filled with magnetic powder; the rubber ball and the magnetic powder inside thereof being matched with a magnetizing device for magnetizing the rubber ball;

[0006] The rubber ball is connected to a rubber ball launching device for launching the rubber ball and sending the rubber ball into the crack;

[0007] It also includes a magnetic slurry, wherein the magnetic slurry is uniformly mixed with water-swellable rubber;

[0008] The magnetic slurry is connected to a grouting device for grouting.

[0009] The magnetic powder is iron powder or cobalt powder, and it is ensured that it can be magnetized after magnetization.

[0010] The mass of the filled magnetic powder is 2-8 times the mass of the rubber ball.

[0011] The magnetic slurry is composed of a mixture of superfine cement and magnetic powder.

[0012] The water-swellable rubber is selected to expand and deform 2-3 times after being exposed to water for 12 hours, so that it can fill all irregular surfaces, cavities and gaps in the joint, and at the same time generate huge contact pressure to completely repair the cracks.

[0013] The magnetizing device adopts a magnetizer, and is used to magnetize the magnetic powder through the magnetizer.

[0014] The rubber ball launching device comprises a storage box for storing rubber balls, wherein a metal strip is arranged inside the storage box, and a spring for propelling the metal strip is connected to the bottom end of the metal strip so as to push the rubber balls to the top opening of the storage box, wherein the size of the top opening is smaller than the size of the rubber balls, and the other side of the top opening of the storage box is connected to the exhaust pipe of the jet vacuum pump; a push-type reset switch is arranged on the exhaust pipe and is used to control the launching interval of the rubber balls so as to ensure that the number of rubber balls launched into the cracks at equal intervals is the same; a curved conduit for transmitting rubber balls is connected to the top opening side of the storage box.

[0015] The rubber balls made of vulcanized rubber and filled with magnetic powder have different particle sizes. The rubber balls with small particle sizes are sprayed first and then the rubber balls with large particle sizes by a jet vacuum pump to ensure that there are enough magnetic attraction ends.

[0016] The method for repairing underwater cracks by using a device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry comprises the following steps:

[0017] When using a rubber ball:

[0018] Step 1.1: Magnetizing: using a magnetizing machine to magnetize a rubber ball made of vulcanized rubber and filled with magnetic powder to magnetize the rubber ball;

[0019] Step 1.2: Place the magnetized rubber ball into the storage box of the rubber ball launching device;

[0020] Step 1.3: Connect the jet vacuum pump to one side of the top opening of the storage box through the exhaust pipe, and connect the curved conduit to the other side of the top opening of the storage box;

[0021] Step 1.4: Open the air valve of the jet vacuum pump and set the air pressure value;

[0022] Step 1.5: Use the push-type reset switch to control the jetting of the jet vacuum pump air pressure, and inject the magnetic rubber balls in the storage box into the cracks, first injecting the rubber balls with small particle sizes and then the rubber balls with large particle sizes;

[0023] Step 1.6: Inject the mixture of water-swellable rubber and magnetic slurry into the cracks through a grouting machine.

[0024] The method for repairing underwater cracks by using a device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry comprises the following steps:

[0025] If using a spiked metal ball:

[0026] Step 2.1: Magnetization: Use a magnetizer to magnetize the thorny metal ball;

[0027] Step 2.2: Place the magnetized thorny metal ball into the storage box;

[0028] Step 2.3: Connect the jet vacuum pump to one side of the top opening of the storage box through the exhaust pipe, and connect the curved conduit to the other side of the top opening of the storage box;

[0029] Step 2.4: Open the air valve of the jet vacuum pump and set the air pressure value;

[0030] Step 2.5: Use the push-type reset switch to control the jet vacuum pump to inject the barbed metal balls in the storage box into the cracks, first injecting the small-sized barbed metal balls and then the large-sized barbed metal balls;

[0031] Step 2.6: Inject the mixture of water-swellable rubber and magnetic slurry into the cracks through a grouting machine.

[0032] The present invention has the following beneficial effects:

[0033] 1. The rubber ball used in the present invention has a good flexibility and magnetic structure, which can ensure better embedding into the cracks through air pressure injection, and can also attract a mixture of water-swellable rubber and magnetic slurry to discharge water and air from the cracks.

[0034] 2. The rubber ball storage box used in the present invention is provided with a spring and a metal strip at the bottom. After the last rubber ball is ejected, the next rubber ball reaches the position of the last rubber ball by the elastic force of the spring, which can well control the position and number of rubber balls ejected into the crack. In addition, a metal half-clad plate is provided on the top of the rubber ball storage box, which can well prevent the rubber ball from ejecting and facilitate the rubber ball to enter the curved conduit under the impact of air pressure.

[0035] 3. The exhaust end of the vacuum jet pump used in the present invention is provided with a push-type reset switch, which can well control the size of the air pressure acting on the rubber ball, so that the rubber ball can be better embedded in the crack.

[0036] 4. One end of the curved-mouth catheter used in the present invention is connected to the top of the rubber ball storage box, and the other end is a curved-mouth end, which can control the direction and position of the rubber ball ejection.

[0037] 5. The water-swellable rubber used in the present invention can be well integrated with the magnetic slurry. This rubber expands and deforms 2-3 times after contacting water, and fills all irregular surfaces, holes and gaps in the joints, while generating huge contact pressure to completely prevent leakage.

[0038] 6. The rubber balls used in the present invention have different sizes. When spraying, the small particles are sprayed first and then the large particles, ensuring that there are enough suction ends to attract the mixture of water-swellable rubber and magnetic slurry.

[0039] 7. The rubber ball used in the present invention contains iron-cobalt powder 2-8 times larger than the mass of the rubber itself. Under the action of a magnetizer, the rubber ball is magnetized and has magnetic properties, which can better attract the mixed slurry of water-swellable rubber and magnetic slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0041] Figure 1 It is a cross-sectional view of the rubber ball of the present invention.

[0042] Figure 2 It is a structural diagram of the storage box of the present invention.

[0043] Figure 3 It is a structural diagram of the curved-mouth catheter of the present invention.

[0044] Figure 4 This is a structural diagram of the jet vacuum pump of the present invention.

[0045] Figure 5 It is the magnetic slurry of the present invention.

[0046] Figure 6 This is a diagram of a rubber ball launching device according to the present invention.

[0047] Figure 7 This is a diagram of crack filling using the rubber ball and magnetic slurry of the present invention.

[0048] In the figure: vulcanized rubber 1, magnetic powder 2, water-swellable rubber 3, magnetic slurry 4, jet vacuum pump 5, exhaust pipe 6, curved conduit 7, storage box 8, spring 9, push-type reset switch 10, metal strip 11, rubber ball 12, crack 13. DETAILED DESCRIPTION

[0049] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0050] Embodiment 1:

[0051] See also Figure 1-7 The device for repairing underwater cracks by using a mixture of water-swellable rubber and magnetic slurry comprises a rubber ball 12 made of vulcanized rubber 1, the interior of the rubber ball 12 is filled with magnetic powder 2; the rubber ball 12 and the magnetic powder 2 inside the rubber ball 12 are matched with a magnetizing device for magnetizing the rubber ball 12; the rubber ball 12 is connected to a rubber ball launching device for launching the rubber ball 12 and sending it into the crack; the device also comprises a magnetic slurry 4, the interior of the magnetic slurry 4 is uniformly mixed with water-swellable rubber 3; the magnetic slurry 4 is connected to a grouting device for grouting. By adopting the device of the present invention, the water-swellable rubber is a rubber that can be well fused with the magnetic slurry. The rubber will expand and deform 2-3 times after contacting water for about 12 hours, and fill all irregular surfaces, cavities and gaps of the cracks to be repaired, and at the same time generate huge contact pressure, improve the shear strength of the crack interface, make the repair area not easy to fall off, completely prevent leakage, safe and reliable, simple and convenient to operate, and thus achieve the effect of underwater crack repair.

[0052] Furthermore, the magnetic powder 2 is made of iron powder or cobalt powder and ensures that it can be magnetized after magnetization. By using the above magnetic powder 2, the rubber ball 12 can be magnetic, thereby forming a magnetic attraction end to ensure the adsorption of the magnetic slurry 4.

[0053] Furthermore, the mass of the filled magnetic powder 2 is 2-8 times the mass of the rubber ball 12. Through the above-mentioned weight matching, it is ensured that the rubber ball 12 has a good filling effect.

[0054] Furthermore, the magnetic slurry 4 is composed of a mixture of ultrafine cement and magnetic powder.

[0055] Furthermore, the water-swellable rubber 3 is selected from water-swellable rubber that expands and deforms 2-3 times after contacting water for 12 hours, so that it can fill all irregular surfaces, cavities and gaps in the joint, while generating huge contact pressure to completely repair the cracks.

[0056] Furthermore, the magnetizing device adopts a magnetizer, and the magnetizer is used to magnetize the magnetic powder 2. Through magnetization, the rubber ball 12 has magnetism, thereby forming a magnetic attraction end.

[0057] Furthermore, the rubber ball launching device comprises a storage box 8 for storing rubber balls 12, wherein a metal strip 11 is arranged inside the storage box 8, and a spring 9 for pushing the rubber balls 12 is connected to the bottom end of the metal strip 11, so that the rubber balls 12 are pushed to the top opening of the storage box 8, wherein the size of the top opening is smaller than the size of the rubber balls 12, and the other side of the top opening of the storage box 8 is connected to the exhaust pipe 6 of the jet vacuum pump 5; a push-type reset switch 10 is arranged on the exhaust pipe 6, and is used to control the launching interval of the rubber balls 12, so as to ensure that the number of rubber balls 12 launched into the cracks at equal intervals is the same; and a curved mouth conduit 7 for transmitting the rubber balls 12 is connected to the top opening side of the storage box 8. The rubber ball launching device can be used to launch rubber balls, and after the previous rubber ball is ejected, the next rubber ball reaches the position of the previous rubber ball through the elastic force of the spring, so that the position and number of rubber balls launched into the cracks can be well controlled. In addition, a metal half-cladding plate is arranged on the top of the rubber ball storage box, which can well prevent the rubber balls from popping out, and at the same time, it is conducive for the rubber balls to enter the curved mouth conduit under the impact of air pressure.

[0058] Furthermore, the rubber balls 12 made of the vulcanized rubber 1 and filled with the magnetic powder 2 have different particle sizes. The rubber balls with small particle sizes are sprayed first and then the rubber balls with large particle sizes by the jet vacuum pump 5 to ensure that there are enough magnetic attraction ends.

[0059] Embodiment 2:

[0060] The method for repairing underwater cracks by using a device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry comprises the following steps:

[0061] When using the rubber ball 12:

[0062] Step 1.1: magnetizing, using a magnetizing machine to magnetize a rubber ball 12 made of vulcanized rubber 1 and filled with magnetic powder 2, so that the rubber ball 12 is magnetized;

[0063] Step 1.2: Load the magnetized rubber ball 12 into the storage box 8 of the rubber ball launching device;

[0064] Step 1.3: Connect the jet vacuum pump 5 to one side of the top opening of the storage box 8 through the exhaust pipe 6, and connect the curved conduit 7 to the other side of the top opening of the storage box 8;

[0065] Step 1.4: Open the air valve of the jet vacuum pump 5 and set the pressure value of the air pressure;

[0066] Step 1.5: The air pressure of the jet vacuum pump 5 is controlled by the push-type reset switch 10 to inject the magnetic rubber balls 12 in the storage box 8 into the cracks, first injecting the rubber balls 12 with small particle sizes and then injecting the rubber balls 12 with large particle sizes;

[0067] Step 1.6: Inject the mixture of water-swellable rubber 3 and magnetic slurry 4 into the cracks through a grouting machine.

[0068] Embodiment 3:

[0069] The method for repairing underwater cracks by using a device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry comprises the following steps:

[0070] If using a spiked metal ball:

[0071] Step 2.1: Magnetization: Use a magnetizer to magnetize the thorny metal ball;

[0072] Step 2.2: Place the magnetized barbed metal ball into the storage box 8;

[0073] Step 2.3: Connect the jet vacuum pump 5 to one side of the top opening of the storage box 8 through the exhaust pipe 6, and connect the curved conduit 7 to the other side of the top opening of the storage box 8;

[0074] Step 2.4: Open the air valve of the jet vacuum pump 5 and set the air pressure value;

[0075] Step 2.5: The air pressure of the jet vacuum pump 5 is controlled by the push-type reset switch 10 to eject the thorny metal balls in the storage box 8 into the cracks, first ejecting the thorny metal balls with small particle sizes and then ejecting the thorny metal balls with large particle sizes;

[0076] Step 2.6: Inject the mixture of water-swellable rubber 3 and magnetic slurry 4 into the cracks through a grouting machine.

Claims

1. A device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry, characterized in that: The invention comprises a rubber ball (12) made of vulcanized rubber (1), wherein the interior of the rubber ball (12) is filled with magnetic powder (2); the rubber ball (12) and the magnetic powder (2) therein cooperate with a magnetizing device for magnetizing the rubber ball (12); The rubber ball (12) is connected to a rubber ball launching device for launching the rubber ball and sending the rubber ball into the crack; It also includes a magnetic slurry (4), wherein the magnetic slurry (4) is uniformly mixed with water-swellable rubber (3); The magnetic slurry (4) is connected to a grouting device for grouting.

2. The device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry according to claim 1, characterized in that: The magnetic powder (2) is selected from iron powder or cobalt powder, and is ensured to be magnetized after magnetization.

3. The device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry according to claim 1 or 2, characterized in that: The mass of the filled magnetic powder (2) is 2-8 times the mass of the rubber ball (12).

4. The device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry according to claim 1, characterized in that: The magnetic slurry (4) is composed of a mixture of ultrafine cement and magnetic powder.

5. The device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry according to claim 1, characterized in that: The water-swellable rubber (3) is selected from water-swellable rubber that expands and deforms 2-3 times after being exposed to water for 12 hours, so that it can fill all irregular surfaces, cavities and gaps in the joint, while generating huge contact pressure to completely repair the cracks.

6. The device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry according to claim 1, characterized in that: The magnetizing device adopts a magnetizer, and the magnetizer is used to magnetize the magnetic powder (2).

7. The device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry according to claim 1, characterized in that: The rubber ball launching device comprises a storage box (8) for storing rubber balls (12), wherein a metal strip (11) is arranged inside the storage box (8), and a spring (9) for propelling the metal strip (11) is connected to the bottom end of the metal strip (11) so as to push the rubber balls (12) to the top opening of the storage box (8), wherein the size of the top opening is smaller than the size of the rubber balls (12), and the other side of the top opening of the storage box (8) is connected to an exhaust pipe (6) of an ejector vacuum pump (5); a push-type reset switch (10) is arranged on the exhaust pipe (6) and is used to control the launching interval of the rubber balls (12) so as to ensure that the same number of rubber balls (12) are launched into the cracks at equal intervals; and a curved conduit (7) for transmitting the rubber balls (12) is connected to the top opening side of the storage box (8).

8. The device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry according to claim 7, characterized in that: The rubber balls (12) made of the vulcanized rubber (1) and filled with the magnetic powder (2) have different particle sizes. The rubber balls with small particle sizes are sprayed first and then the rubber balls with large particle sizes by the jet vacuum pump (5) to ensure that there are enough magnetic attraction ends.

9. A method for repairing underwater cracks using the device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry as claimed in any one of claims 1 to 8, characterized in that: The steps include: When using a rubber ball (12): Step 1.1: magnetizing, using a magnetizing machine to magnetize a rubber ball (12) made of vulcanized rubber (1) and filled with magnetic powder (2), so that the rubber ball (12) is magnetized; Step 1.2: Load the magnetized rubber ball (12) into the storage box (8) of the rubber ball launching device; Step 1.3: Connect the jet vacuum pump (5) to one side of the top opening of the storage box (8) through the exhaust pipe (6), and connect the curved conduit (7) to the other side of the top opening of the storage box (8); Step 1.4: Open the air valve of the jet vacuum pump (5) and set the air pressure value; Step 1.5: The air pressure of the jet vacuum pump (5) is controlled by the push-type reset switch (10) to inject the magnetic rubber balls (12) in the storage box (8) into the cracks, first injecting the rubber balls (12) with small particle sizes and then injecting the rubber balls (12) with large particle sizes; Step 1.6: Inject the mixture of water-swellable rubber (3) and magnetic slurry (4) into the cracks through a grouting machine.

10. A method for repairing underwater cracks using the device for repairing underwater cracks using a mixture of water-swellable rubber and magnetic slurry as claimed in any one of claims 1 to 8, characterized in that: The steps include: If using a spiked metal ball: Step 2.1: Magnetization: Use a magnetizer to magnetize the thorny metal ball; Step 2.2: Place the magnetized thorny metal ball into the storage box (8); Step 2.3: Connect the jet vacuum pump (5) to one side of the top opening of the storage box (8) through the exhaust pipe (6), and connect the curved conduit (7) to the other side of the top opening of the storage box (8); Step 2.4: Open the air valve of the jet vacuum pump (5) and set the air pressure value; Step 2.5: The air pressure of the jet vacuum pump (5) is controlled by the push-type reset switch (10) to eject the thorny metal balls in the storage box (8) into the cracks, first ejecting the thorny metal balls with small particle sizes and then ejecting the thorny metal balls with large particle sizes; Step 2.6: Inject the mixture of water-swellable rubber (3) and magnetic slurry (4) into the cracks through a grouting machine.

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