Underwater agitator and underwater glue injection system

Abstract

This application relates to an underwater mixer and an underwater adhesive injection system. The underwater mixer includes a drive motor, a mixing tank, a drive shaft, blades, and a bearing housing. The mixing tank includes a tank body and a cover for sealing the tank body. The cover has a clearance hole. One end of the drive shaft is connected to the output shaft of the drive motor, and the other end of the drive shaft extends into the tank body through the clearance hole. A mechanical seal is provided between the drive shaft and the cover. The blades are connected to the drive shaft and are located inside the mixing tank. The bearing housing is sleeved outside the drive shaft, and one end of the bearing housing is sealed to the cover. A first seal is provided between the bearing housing and the cover. The other end of the bearing housing is sealed to the drive motor, and a second seal is provided between the bearing housing and the drive motor. The above-described underwater mixer is more suitable for underwater construction environments.

Description

Technical Field

[0001] This application relates to the field of underwater construction equipment technology, and in particular to an underwater mixer and an underwater glue injection system. Background Technology

[0002] As my country continues to expand and deepen its marine and underwater engineering capabilities, the need for underwater construction and maintenance is becoming increasingly frequent, such as underwater pipeline repair, underwater pile foundation reinforcement, and submarine cable repair. These projects often require adhesive injection operations in underwater environments.

[0003] In adhesive injection operations, it is usually necessary to mix different components of the adhesive to form a composite adhesive before injection. However, most current mixers can only be used in onshore environments and cannot meet the needs of underwater adhesive injection operations. Summary of the Invention

[0004] Therefore, it is necessary to provide an underwater mixer and an underwater adhesive injection system to solve the problem that traditional mixers cannot be used for underwater construction.

[0005] This application provides an underwater mixer, comprising:

[0006] Drive motor;

[0007] A mixing tank, comprising a tank body and a cover for sealing the tank body, the cover having an clearance hole;

[0008] A drive shaft, one end of which is connected to the output shaft of the drive motor, and the other end of which extends into the barrel body through the clearance hole. A mechanical seal is provided between the drive shaft and the cover.

[0009] The blade is connected to the drive shaft and is located in the mixing tank;

[0010] A bearing housing is sleeved outside the drive shaft, and one end of the bearing housing is sealed to the cover. A first sealing element is provided between the bearing housing and the cover. The other end of the bearing housing is sealed to the drive motor. A second sealing element is provided between the bearing housing and the drive motor.

[0011] The technical solution will be further explained below:

[0012] In one embodiment, the cover of the bearing housing includes:

[0013] A cover plate that seals the barrel body, and an clearance hole is formed on the cover plate;

[0014] A connecting part is provided, which protrudes from the cover plate and surrounds the outer periphery of the clearance hole. One end of the connecting part away from the cover plate is sealed to the bearing seat. The first sealing element is disposed between the connecting part and the bearing seat.

[0015] In one embodiment, the connecting portion has a first flange at the end away from the cover plate, and the bearing seat has a second flange protruding at the end near the cover body. The first flange and the second flange are mated together, and the first sealing element is disposed between the first flange and the second flange.

[0016] The underwater mixer also includes a clamp, which clamps onto the first flange and the second flange.

[0017] In one embodiment, the bearing housing has an end cap at one end away from the cover body, the drive motor includes a waterproof housing, the waterproof housing has a support, the support is fixedly connected to the end cap, and the second seal is disposed between the support and the end cap.

[0018] In one embodiment, the inner wall of the bearing housing is provided with a positioning boss, and the end of the positioning boss near the drive motor is provided with a positioning step; the underwater agitator also includes a bearing pressure plate, which is connected to the end of the positioning boss away from the positioning step, and a limiting space is formed between the bearing pressure plate, the positioning boss and the positioning step for accommodating the bearing and limiting the bearing.

[0019] In one embodiment, a sealing assembly is provided between the bearing pressure plate and the bearing.

[0020] In one embodiment, the sealing assembly includes an elastic sealing ring and an O-ring. One end of the elastic sealing ring abuts against the bearing pressure plate, and the other end of the elastic sealing ring abuts against the bearing. The O-ring is fitted over the elastic sealing ring and abuts against the positioning boss.

[0021] In one embodiment, the drive motor is a pneumatic motor.

[0022] In one embodiment, the number of blades is multiple, and the multiple blades are spaced apart circumferentially and axially along the axis of rotation.

[0023] On the other hand, this application also provides an underwater dispensing system, including the aforementioned underwater agitator.

[0024] The aforementioned underwater mixer uses a drive motor to rotate the transmission shaft, which in turn drives the impeller to mix the colloid within the mixing tank. A mechanical seal between the transmission shaft and the cover effectively seals the clearance between them, preventing leakage of the colloid into the bearing housing and contaminating the bearings or drive motor without affecting the shaft's rotation relative to the cover. The bearings support and fix the transmission shaft, ensuring its stability during rotation and preventing deformation or damage due to uneven stress or excessive friction. Furthermore, by housing the bearings in bearing housings, with one end sealed to the cover and the other end sealed to the drive motor, the mixer achieves both secure mounting and sealing of the bearing housing, preventing water from entering and damaging the bearings or drive motor. This makes the underwater mixer suitable for underwater construction environments. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the various components are shown as examples only and not necessarily to scale. In the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the control panel structure according to one embodiment.

[0029] Figure 2 This is a schematic diagram of an underwater glue injection system according to one embodiment.

[0030] Figure 3 This is a schematic diagram of the structure of an underwater mixer according to one embodiment.

[0031] Figure 4 for Figure 3 The underwater mixer shown is a cross-sectional view of section AA.

[0032] Figure 5 for Figure 4 The image shows a magnified view of part B.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Control panel; 11. Injection shut-off valve; 12. Mixing shut-off valve; 13. Injection pressure regulating valve; 14. Mixing pressure regulating valve; 15. Injection pressure gauge; 16. Mixing pressure gauge; 20. Glue storage tank; 21. First air inlet; 22. First glue outlet; 30. Mixing tank; 301. Glue inlet; 302. Air outlet; 303. Second glue outlet; 31. Tank body; 32. Cover; 321. Cover plate; 322. Connecting part; 323. First flange; 40. Underwater mixer; 41. Drive motor; 4 11. Second air inlet; 412. Support; 42. Bearing housing; 421. Second flange; 422. End cap; 423. Positioning boss; 424. Positioning step; 425. Bearing pressure plate; 43. Drive shaft; 44. Blade; 45. Bearing; 51. First seal; 52. Second seal; 53. Mechanical seal; 54. Sealing assembly; 541. Elastic sealing ring; 542. O-ring; 60. Clamp; 81. First dispensing control valve; 82. Second dispensing control valve; 83. Exhaust control valve. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0037] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0041] This application provides an underwater mixer 40, which is used for mixing adhesives in underwater construction or repair scenarios. Specifically, underwater construction or repair scenarios include, but are not limited to, underwater pipeline repair, underwater pile foundation reinforcement, and submarine cable repair.

[0042] See Figures 3 to 5An underwater mixer 40 in one embodiment includes a drive motor 41, a mixing tank 30, a drive shaft 43, a blade 44, and a bearing seat 42. The mixing tank 30 includes a tank body 31 and a cover 32 for sealing the tank body 31. The cover 32 has a clearance hole. One end of the drive shaft 43 is connected to the output shaft of the drive motor 41, and the other end of the drive shaft 43 extends into the tank body 31 through the clearance hole. A mechanical seal 53 is provided between the drive shaft 43 and the cover 32. The blade 44 is connected to the drive shaft 43 and is located in the mixing tank 30. The bearing seat 42 is sleeved on the drive shaft 43, and one end of the bearing seat 42 is sealed to the cover 32. A first sealing element 51 is provided between the bearing seat 42 and the cover 32. The other end of the bearing seat 42 is sealed to the drive motor 41. A second sealing element 52 is provided between the bearing seat 42 and the drive motor 41.

[0043] Among them, mechanical seal 53, also called end face seal, is a shaft sealing device used in rotating fluid machinery. It refers to a device that prevents fluid leakage, consisting of at least one pair of end faces perpendicular to the axis of rotation, which remain in contact and slide relative to each other under the action of fluid pressure, the elastic force (or magnetic force) of the compensation mechanism, and the cooperation of auxiliary seals. Both the first sealing element 51 and the second sealing element 52 can be silicone gaskets.

[0044] The aforementioned underwater mixer 40 drives the drive shaft 43 to rotate via the drive motor 41, which in turn drives the impeller 44 to mix the colloid in the mixing tank 30. A mechanical seal 53 is installed between the drive shaft 43 and the cover 32 to effectively seal the clearance between them. This prevents the colloid from leaking from the clearance opening into the bearing housing 42 and contaminating the bearing 45 or the drive motor 41 without affecting the rotation of the drive shaft 43 relative to the cover 32. The bearing 45 supports and fixes the drive shaft 43, ensuring its stability during rotation and preventing deformation or damage due to uneven force or excessive friction. Furthermore, by placing the bearing 45 in the bearing housing 42 and sealing one end of the bearing housing 42 with the cover 32 and the other end of the bearing housing 42 with the drive motor 41, the bearing housing 42 is fixed to the motor, and the sealing performance of the bearing housing 42 is guaranteed, preventing water from entering the bearing 45 bearing housing and damaging the bearing 45 or the drive motor 41, thus enabling the underwater mixer 40 to be used in underwater construction environments.

[0045] See Figure 5In one embodiment, the cover 32 includes a cover plate 321 and a connecting portion 322. The cover plate 321 seals the clearance hole of the tank 31, which is formed on the cover plate 321. The connecting portion 322 protrudes from the cover plate 321 and surrounds the outer periphery of the clearance hole. One end of the connecting portion 322 away from the cover plate 321 is sealed to the bearing seat 42. A first sealing element 51 is disposed between the connecting portion 322 and the bearing seat 42. By having the connecting portion 322 surround the clearance hole and the first sealing element 51 is disposed between the connecting portion 322 and the bearing seat 42, and in conjunction with the mechanical seal 53 between the drive shaft 43 and the cover 32, a double seal is formed from the water area to the inside of the tank 31, effectively preventing water from entering the mixing tank 30 and further improving the applicability of the underwater mixer 40 in water.

[0046] See Figure 5 In one embodiment, the end of the connecting portion 322 facing away from the cover plate 321 is provided with a first flange 323, and the end of the bearing seat 42 near the cover 32 is provided with a second flange 421. The first flange 323 and the second flange 421 are mated together, and the first sealing member 51 is disposed between the first flange 323 and the second flange 421. The underwater agitator 40 also includes a clamping member 60, which clamps the first flange 323 and the second flange 421. By disposing the first sealing member 51 between the first flange 323 and the second flange 421, the contact area between the first sealing member 51 and the connecting portion 322 and the bearing seat 42 can be increased, thereby improving the sealing effect. Meanwhile, by using clamping parts 60 on the outer clamps of the first flange 323 and the second flange 421, the connection between the cover 32 and the bearing seat 42 is ensured to be stable, and the clamping parts 60 further seal the mating gap between the first flange 323 and the second flange 421, thereby further improving the sealing effect between the cover 32 and the bearing seat 42.

[0047] See Figure 5 In one embodiment, the bearing housing 42 has an end cap 422 at the end opposite to the cover 32. The drive motor 41 includes a waterproof housing with a support 412 fixedly connected to the end cap 422. A second seal 52 is disposed between the support 412 and the end cap 422. The waterproof housing effectively prevents water from entering the drive motor 41, thereby protecting the internal electronic components. By placing the second seal 52 between the end cap 422 and the support 412, the contact area between the second seal 52 and the drive motor 41 and the bearing housing 42 is increased, thereby improving the sealing effect.

[0048] See Figure 5In one embodiment, a positioning boss 423 protrudes from the inner wall of the bearing housing 42, and a positioning step 424 is provided at the end of the positioning boss 423 near the drive motor 41. The underwater agitator 40 also includes a bearing pressure plate 425, which is connected to the end of the positioning boss 423 away from the positioning step 424. A limiting space is formed between the bearing pressure plate 425, the positioning boss 423, and the positioning step 424 to accommodate and limit the bearing 45. By radially limiting the bearing 45 through the positioning boss 423, and axially limiting the bearing 45 at both ends through the positioning step 424 and the bearing pressure plate 425, the bearing 45 can be effectively fixed, preventing the bearing 45 from shaking during the rotation of the drive shaft 43, thereby improving the rotational stability of the drive shaft 43.

[0049] See Figure 5 In one embodiment, a sealing assembly 54 is provided between the bearing pressure plate 425 and the bearing 45. The sealing assembly 54 seals the gap between the bearing pressure plate 425 and the bearing 45, so that when the first seal 51 or the mechanical seal 53 fails, the sealing assembly 54 can form a second sealing protection to prevent water or colloid from continuing to rise and damage the drive motor 41.

[0050] Furthermore, the sealing assembly 54 includes an elastic sealing ring 541 and an O-ring 542. One end of the elastic sealing ring 541 abuts against the bearing pressure plate 425, and the other end of the elastic sealing ring 541 abuts against the bearing 45. The O-ring 542 is disposed outside the elastic sealing ring 541 and abuts against the positioning boss 423. The elastic sealing ring 541 and the O-ring 542 form a double seal between the bearing 45 and the bearing pressure plate 425, further improving the sealing effect. Optionally, the elastic sealing ring 541 can be a rubber sealing ring.

[0051] Optionally, in one embodiment, the drive motor 41 is a pneumatic motor. This allows for pneumatic motor drive via an air circuit, preventing the risk of electrical leakage during underwater operation and making the underwater mixer 40 more suitable for underwater working environments.

[0052] See Figure 4 In one embodiment, there are multiple blades 44, which are spaced apart circumferentially and axially along the axis of rotation. This improves the mixing uniformity of the colloid in the mixing tank 30.

[0053] Alternatively, in one embodiment, see Figure 3 The cover 32 is also provided with a glue inlet 301, which is used to inject the glue into the mixing tank 30. The tank body 31 is also provided with a glue outlet, which is used to discharge the mixed glue after mixing.

[0054] See Figure 1 as well as Figure 2This application also provides an underwater glue injection system, one embodiment of which includes the underwater agitator 40 of any of the above embodiments.

[0055] The underwater agitator 40 of the aforementioned underwater dispensing system drives the transmission shaft 43 to rotate via the drive motor 41, which in turn drives the impeller 44 to mix the colloid within the mixing tank 30. A mechanical seal 53 is installed between the cover 32 and the other cover 32 to effectively seal the clearance between them, preventing colloid leakage from the clearance opening into the bearing housing 42 and contaminating the bearing 45 or the drive motor 41 without affecting the rotation of the transmission shaft 43 relative to the cover 32. The bearing 45 supports and fixes the transmission shaft 43, ensuring its stability during rotation and preventing deformation or damage due to uneven force or excessive friction. Furthermore, by placing the bearing 45 in the bearing housing 42 and sealing one end of the bearing housing 42 with the cover 32 and the other end of the bearing housing 42 with the drive motor 41, the bearing housing 42 is fixed to the motor, and the sealing performance of the bearing housing 42 is guaranteed, preventing water from entering the bearing 45 bearing housing and damaging the bearing 45 or the drive motor 41, thus enabling the underwater mixer 40 to be used in underwater construction environments.

[0056] Specifically, in one embodiment, the underwater glue injection system further includes an air source, a control panel 10, and a glue storage tank 20. The control panel 10 is connected to the air source. The control panel 10 is provided with a glue injection air path and a stirring air path connected to the air source. The control panel 10 is also provided with a glue injection shut-off valve 11 for adjusting the glue injection air path switch and flow rate, and a stirring shut-off valve 12 for adjusting the stirring air path switch and flow rate. The glue storage tank 20 is provided with a first air inlet 21 and a first glue outlet 22. The first air inlet 21 is connected to the glue injection air path. The stirring tank 30 is provided with a glue inlet 301, a second glue outlet 303, and a first exhaust port. The glue inlet 301 is connected to the first glue outlet 22. A first glue outlet control valve 81 is provided between the glue inlet 301 and the first glue outlet 22. A second glue outlet control valve 82 is connected to the second glue outlet 303. An exhaust control valve 83 is connected to the first exhaust port. The drive motor 41 is provided with a second air inlet 411, which is connected to the stirring air path.

[0057] Specifically, in actual operation, an appropriate amount of A glue is pre-filled in the glue storage tank 20 and an appropriate amount of B glue is pre-filled in the mixing tank 30. Then, the underwater part is submerged to the operation site.

[0058] Then, the glue injection shut-off valve 11, the first glue discharge control valve 81, and the exhaust control valve 83 are opened in sequence so that the A glue in the glue storage tank 20 enters the mixing tank 30 under the air pressure of the glue injection air circuit. After all the A glue in the glue storage tank 20 has entered the mixing tank 30, the glue injection shut-off valve 11, the first glue discharge control valve 81, and the exhaust control valve 83 are closed in sequence.

[0059] Then open the stirring shut-off valve 12 so that the drive motor 41, driven by the air pressure in the stirring air passage, can mix the A and B adhesives in the mixing tank 30 with the blades 44. After the underwater stirrer 40 has stirred for a preset time to fully mix the A and B adhesives to form a mixed adhesive, close the stirring shut-off valve 12.

[0060] Open the glue injection shut-off valve 11, the first glue discharge control valve 81, and the second glue discharge control valve 82 in sequence, so that the mixed glue in the mixing tank 30 is discharged from the second glue discharge port 303 and injected into the target area under the air pressure drive of the glue injection air circuit.

[0061] After the glue injection is completed, the second glue discharge control valve 82, the first glue discharge control valve 81, and the glue injection stop valve 11 are closed in sequence to prevent water from flowing back into the mixing tank 30, thereby completing the glue injection.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An underwater mixer, characterized in that, include: Drive motor; A mixing tank, comprising a tank body and a cover for sealing the tank body, the cover having an clearance hole; A drive shaft, one end of which is connected to the output shaft of the drive motor, and the other end of which extends into the barrel body through the clearance hole. A mechanical seal is provided between the drive shaft and the cover. The blade is connected to the drive shaft and is located in the mixing tank; The bearing housing is sleeved outside the drive shaft, with one end of the bearing housing sealed to the cover. A first seal is provided between the bearing housing and the cover. The other end of the bearing housing is sealed to the drive motor. A second seal is provided between the bearing housing and the drive motor. An end cap is provided at the end of the bearing housing facing away from the cover. The drive motor includes a waterproof housing with a support fixedly connected to the end cap. The second seal is provided between the support and the end cap. A positioning boss protrudes from the inner wall of the bearing housing, and a positioning step is provided at the end of the positioning boss near the drive motor. The underwater agitator also includes a bearing pressure plate connected to the end of the positioning boss facing away from the positioning step. A limiting space is formed between the bearing pressure plate, the positioning boss, and the positioning step to accommodate and limit the bearing.

2. The underwater mixer according to claim 1, characterized in that, The cover includes: A cover plate that seals the barrel body, and an clearance hole is formed on the cover plate; A connecting part is provided, which protrudes from the cover plate and surrounds the outer periphery of the clearance hole. One end of the connecting part away from the cover plate is sealed to the bearing seat. The first sealing element is disposed between the connecting part and the bearing seat.

3. The underwater mixer according to claim 2, characterized in that, The connecting part is provided with a first flange at the end away from the cover plate, and the bearing seat is provided with a second flange at the end near the cover body. The first flange and the second flange are connected, and the first sealing element is disposed between the first flange and the second flange. The underwater mixer also includes a clamp, which clamps onto the first flange and the second flange.

4. The underwater mixer according to claim 1, characterized in that, A sealing assembly is provided between the bearing pressure plate and the bearing.

5. The underwater mixer according to claim 4, characterized in that, The sealing assembly includes an elastic sealing ring and an O-ring. One end of the elastic sealing ring abuts against the bearing pressure plate, and the other end of the elastic sealing ring abuts against the bearing. The O-ring is fitted over the elastic sealing ring and abuts against the positioning boss.

6. The underwater mixer according to claim 4, characterized in that, The drive motor is a pneumatic motor.

7. The underwater mixer according to claim 4, characterized in that, The number of blades is multiple, and the multiple blades are spaced apart along the circumference and axial direction of the drive shaft.

8. An underwater adhesive injection system, characterized in that, Includes the underwater mixer according to any one of claims 1-7.

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