Underwater propeller

Abstract

The utility model relates to an underwater propeller which is provided with a duct, an underwater motor and a paddle shell, and the paddle shell is connected with a rotor shell of the underwater motor. The duct is provided with a right end and a left end, a plurality of first brackets are fixedly arranged on the inner wall of the right end of the duct, the same ends of the plurality of first brackets are fixedly connected with a motor base, a plurality of second brackets are fixedly connected on the inner wall of the left end of the duct, and the same ends of the plurality of second brackets are fixedly connected with a mounting ring; the motor base is sleeved with a first rectifying ring plate, and the first rectifying ring plate is limited between the inner wall of the duct and the first support through limiting fit with the inner wall of the right end of the duct. A second rectifying ring plate capable of being in limiting fit with the inner wall of the left end of the duct is further arranged, a connecting piece used for limiting the second rectifying ring plate to the left end of the duct is arranged in the mounting ring, and the second rectifying ring plate is fixedly connected with the mounting ring through the connecting piece. According to the utility model, the discharged water flow can be rectified, so that the discharged water flow is more gathered.

Description

Technical Field

[0001] This utility model relates to an underwater propulsion device. Background Technology

[0002] Underwater propulsion systems are essential devices used in underwater vehicles, submarines, ships, and other underwater transportation to provide forward propulsion. They operate based on Newton's third law, which states that for every action, there is an equal and opposite reaction. Underwater propulsion systems typically consist of components such as an electric motor, a propeller, or a jet pump. They generate thrust by rotating the propeller or ejecting water, thus converting mechanical energy into hydrodynamic power.

[0003] When existing underwater thrusters are in use, the water flow after passing through the thruster is not focused and guided, resulting in a chaotic and disordered flow direction. When the chaotic and disordered water flow comes into contact with an object, the direction of the reaction force exerted by the water flow deviates from the desired direction, causing a change in the direction of propulsion.

[0004] First, we will provide an underwater propulsion device that can make the discharged water flow more concentrated. Summary of the Invention

[0005] The purpose of this invention is to provide an underwater propulsion device that can rectify the discharged water flow, making the discharged water flow more concentrated.

[0006] The technical solution to achieve the purpose of this utility model is as follows: This utility model has a duct, an underwater motor, and a blade housing. The blade housing is connected to the rotor housing of the underwater motor. The blade housing rotates synchronously with the rotor housing as the underwater motor operates, thereby driving the blade to rotate. The duct has a right end and a left end. Multiple first supports are fixedly provided on the inner wall of the right end of the duct in the direction of the duct's central axis. A motor base is fixedly connected to the same end of the multiple first supports. Multiple second supports are fixedly connected to the inner wall of the left end of the duct in the direction of the duct's central axis. A mounting ring is fixedly connected to the same end of the multiple second supports. The motor... A first rectifier ring plate is fitted on the base, which can form a limiting fit with the inner wall of the right end of the duct. The first rectifier ring plate is limited between the inner wall of the duct and the first support by the limiting fit with the inner wall of the right end of the duct. A second rectifier ring plate is also provided, which can form a limiting fit with the inner wall of the left end of the duct. A connecting piece is provided in the mounting ring to limit the second rectifier ring plate to the left end of the duct. The second rectifier ring plate is fixedly connected to the mounting ring through the connecting piece. The underwater motor has a control end and a rotating end. One end of the underwater motor is placed in the motor base, and the other end of the underwater motor extends into the interior of the duct.

[0007] Furthermore, the first rectifier ring plate has a first outer ring and a central ring arranged concentrically, and a plurality of first rectifier blades distributed around the central circumference of the central axis are fixedly connected between the first outer ring and the first central ring; the second rectifier ring plate has a second outer ring and a central cover arranged concentrically, and a plurality of second rectifier blades distributed around the central circumference of the central axis are fixedly connected between the second outer ring and the central cover; the middle of both sides of the first rectifier blade is provided with a concave portion extending along the extension direction, and the two sides of the concave portion are provided with a first flow-guiding slope extending outward; the middle of both sides of the second rectifier blade is provided with a convex portion extending along the extension direction, and the two sides of the convex portion are provided with a second flow-guiding slope extending outward.

[0008] Furthermore, the center cover is the first fairing, and the interior of the center cover is fixedly provided with a screw hole. The connecting parts include a screw rod that can form a threaded engagement with the screw hole and a support seat that is fixedly installed inside the mounting ring and allows the screw rod to pass through. The center cover is fixedly installed at the left end of the duct after the screw rod passes through the support seat and engages with the screw hole through the threaded engagement.

[0009] Furthermore, the first rectifier ring plate is provided with a plurality of first slots that correspond one-to-one with each of the first brackets and allow the first brackets to be inserted to form a plug-in engagement. The first rectifier ring plate is fixedly located at the right end of the duct by limiting engagement with the inner wall of the right end of the duct and by the plug-in engagement of the first slots with the first brackets. The second rectifier ring plate is provided with a plurality of second slots that correspond one-to-one with each of the second brackets and allow the second brackets to be inserted to form a plug-in engagement. The second rectifier ring plate is fixedly located at the left end of the duct by limiting engagement with the inner wall of the left end of the duct, by the plug-in engagement of the second slots with the second brackets, and by the connecting piece.

[0010] Furthermore, a partition plate is fixedly installed inside the motor base, dividing the interior of the motor base into a first placement slot and a second placement slot with openings. One end of the underwater motor is placed in the first placement slot, and a control unit for controlling the rotation of the underwater motor is installed in the second placement slot. A second fairing is fixedly installed at the opening of the second placement slot.

[0011] Furthermore, the blade housing has a closed end and a sleeve end. The blade housing is sleeved on the underwater motor through the sleeve end. The closed end is provided with a through hole that communicates with the interior of the blade housing. The underwater motor is provided with a first water inlet / outlet space that corresponds to the through hole and allows water to flow through. A second water inlet / outlet space that allows water to flow through is formed between the blade housing and the opening of the first placement slot.

[0012] Furthermore, the bottom of the first placement groove is provided with an embedding groove, and the embedding groove is provided with a sealing ring; the second placement groove is filled with electronic potting compound.

[0013] This utility model has the following positive effects: (1) The right and left ends of the duct of this utility model are respectively provided with a first rectifier ring plate and a second rectifier ring plate. The first rectifier ring plate has a first outer ring and a central ring arranged concentrically. A plurality of first rectifier blades are fixedly connected between the first outer ring and the first central ring and distributed around the central circumference of the central axis. The second rectifier ring plate has a second outer ring and a central cover arranged concentrically. A plurality of second rectifier blades are fixedly connected between the second outer ring and the central cover and distributed around the central circumference of the central axis. After the water flows into the first rectifier ring plate, it undergoes... The first rectification guides the water flow to the location of the blade casing, where it is concentrated. After the blades rotate, the water flows into the second rectification ring plate for a second rectification. This allows the water flow to be discharged more concentratedly from the left end of the duct after passing through the second rectification ring plate. This rectification process makes the discharged water flow more concentrated, ensuring the accuracy of the discharged water flow direction and reducing directional deviations caused by turbulent water flow. At the same time, the first and second rectification ring plates can block some weeds and debris in the water, ensuring the safety of the blades during operation.

[0014] (2) The first rectifier of this utility model has a concave portion extending along the extension direction in the middle of both sides of the first rectifier, and a first flow guide slope extending outward on both sides of the concave portion. The second rectifier has a convex portion extending along the extension direction in the middle of both sides of the second rectifier, and a second flow guide slope extending outward on both sides of the convex portion. The first flow guide slope on the first rectifier allows more water to enter the concave portion. The first flow guide slope on the first rectifier can increase the potential energy of guiding water into the culvert. The second flow guide slope on the second rectifier can increase the potential energy of guiding water into the convex portion, making the power of water flowing from the convex portion to the second flow guide slope on the second rectifier stronger. At the same time, it can make the water flow more concentrated when it flows out from the left end of the culvert.

[0015] (3) The first rectifier ring plate of this utility model is fixedly installed at the right end of the duct by limiting the inner wall of the right end of the duct and by inserting the first slot into the first bracket. The second rectifier ring plate is fixedly installed at the left end of the duct by limiting the inner wall of the left end of the duct, by inserting the second slot into the second bracket and by connecting the connecting piece. The first rectifier ring plate and the second rectifier ring plate are respectively installed at the right end and the left end of the duct, which can rectify the water flow to the maximum extent.

[0016] (4) The center cover of this utility model is the first rectifier cover, and the second rectifier cover is fixedly provided at the opening of the second placement slot. The first rectifier cover and the second rectifier cover can reduce the resistance to water flow, so that the water flow can enter or leave the location of the blade shell more smoothly.

[0017] (5) The blade shell of this utility model has a closed end and a sleeve end. The blade shell is sleeved on the underwater motor through the sleeve end. The closed end is provided with a through hole that communicates with the interior of the blade shell. The underwater motor is provided with a first water inlet and outlet space that corresponds to the through hole and allows water to flow through. A second water inlet and outlet space is formed between the sleeve end of the blade shell and the opening of the first placement groove. The water can enter the interior of the underwater motor through the through hole and the first water inlet and outlet space, and undergo heat conversion inside the underwater motor to cool the interior of the underwater motor and delay the use time of the underwater motor. After heat conversion, the water finds a gap inside the underwater motor and can leave through the second water inlet and outlet space. Conversely, the water also enters the interior of the underwater motor through the second water inlet and outlet space and leaves the interior of the underwater motor through the first water inlet and outlet space.

[0018] (6) The bottom of the first placement groove of this utility model is provided with an embedding groove, and the embedding groove is provided with a sealing ring; the second placement groove is filled with electronic potting compound; the sealing ring and the electronic potting compound can fill the gap and prevent leakage. Attached Figure Description

[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a front view of the present invention;

[0022] Figure 3 This is a rear view of the present invention;

[0023] Figure 4 This is a side view of the present invention;

[0024] Figure 5 This is a side sectional view of the present invention;

[0025] Figure 6 This is an exploded view of the present invention;

[0026] Figure 7 for Figure 5 Enlarged view of part A in the middle;

[0027] Figure 8 for Figure 6 Enlarged view of part B in the middle;

[0028] Figure 9 for Figure 6 Enlarged view of part D in the middle;

[0029] Figure 10for Figure 6 A magnified view of part D in the middle. Detailed Implementation

[0030] See Figures 1 to 10 This utility model includes a duct 1, an underwater motor 2, and a blade housing 3. The blade housing 3 is connected to the rotor housing of the underwater motor 2, and rotates synchronously with the rotor housing as the underwater motor 2 operates, thereby driving the blade to rotate. The duct 1 has a right end and a left end. Multiple first supports 11 are fixedly provided on the inner wall of the right end of the duct 1 in the direction of the central axis of the duct 1. The same end of the multiple first supports 11 is fixedly connected to a motor base 4. Multiple second supports 12 are fixedly connected on the inner wall of the left end of the duct 1 in the direction of the central axis of the duct 1. The same end of the multiple second supports 12 is fixedly connected to a mounting ring 5. A movable... A first rectifier ring plate 6 forms a limiting fit with the inner wall of the right end of the duct 1. The first rectifier ring plate 6 is limited between the inner wall of the duct 1 and the first support 11 by the limiting fit with the inner wall of the right end of the duct 1. A second rectifier ring plate 7 is also provided, which can form a limiting fit with the inner wall of the left end of the duct 1. A connector 8 is provided in the mounting ring 5 for limiting the second rectifier ring plate 7 to the left end of the duct 1. The second rectifier ring plate 7 is fixedly connected to the mounting ring 5 through the connector 8. The underwater motor 2 has a control end and a rotating end. One end of the underwater motor 2 is placed in the motor base 4, and the other end of the underwater motor 2 extends into the interior of the duct 1.

[0031] When in use, the left end of duct 1 can serve as a water inlet, and the right end of duct 1 can serve as a water outlet.

[0032] After the water flows into the first rectifier ring plate 6, it undergoes the first rectification, guiding the water flow to the location of the blade outer shell 3. After the blade rotates, the water flows into the second rectifier ring plate 7 for the second rectification, so that the water flow can be discharged from the left end of the duct 1 in a more concentrated manner after passing through the second rectifier ring plate 7, ensuring the accurate direction of the discharged water flow and reducing the possibility of directional deviation caused by water turbulence. At the same time, the first rectifier ring plate 6 and the second rectifier ring plate 7 can block some weeds and debris in the water, ensuring the safety of the blade during operation.

[0033] The first rectifier ring plate 6 has a first outer ring 61 and a central ring 62 arranged concentrically, and a plurality of first rectifier blades 63 distributed around the central circumference of the central axis are fixedly connected between the first outer ring 61 and the first central ring 62; the second rectifier ring plate 7 has a second outer ring 71 and a central cover 72 arranged concentrically, and a plurality of second rectifier blades 73 distributed around the central circumference of the central axis are fixedly connected between the second outer ring 71 and the central cover 72; the first rectifier blades 63 have a central concave portion 631 extending along the extension direction at the center of both sides, and a first guide slope 632 extending outward on both sides of the central concave portion 631; the second rectifier blades 73 have a central concave portion 632 extending along the extension direction at the center of both sides. The central convex portion 731 has two outwardly extending second guide slopes 732 on both sides. The outwardly extending first guide slopes 632 on the first rectifier 63 allow more water to enter the central concave portion 631. The first guide slopes 632 on the first rectifier 63 facing the duct 1 can increase the potential energy guiding the water flow into the duct 1. The outwardly extending second guide slopes 732 on the second rectifier 73 can increase the potential energy guiding the water flow into the central convex portion 731, making the water flow from the central convex portion 731 to the outwardly extending second guide slopes 732 on the second rectifier 73 more powerful. At the same time, it can make the water flow more concentrated when it flows out from the left end of the duct 1.

[0034] The center cover 72 is the first rectifier cover. The center cover 72 is fixedly provided with a screw hole inside. The connecting part 8 includes a screw 81 that can form a threaded engagement with the screw hole and a support seat 82 that is fixedly set inside the mounting ring 5 and allows the screw 81 to pass through. The center cover 72 is fixedly set at the left end of the duct 1 after the screw 81 passes through the support seat 82 and engages with the screw hole. The first rectifier ring plate 6 and the second rectifier ring plate 7 are respectively set at the right end and the left end of the duct 1, which can rectify the water flow with the largest area.

[0035] The first rectifier ring plate 6 is provided with a plurality of first slots 64 corresponding one-to-one with each of the first brackets 11 and allowing the first brackets 11 to be inserted into them to form a plug-in fit. The first rectifier ring plate 6 is fixedly set at the right end of the duct 1 by limiting fit with the inner wall of the right end of the duct 1 and by the plug-in fit of the first slots 64 with the first brackets 11. The second rectifier ring plate 7 is provided with a plurality of second slots 74 corresponding one-to-one with each of the second brackets 12 and allowing the second brackets 12 to be inserted into them to form a plug-in fit. The second rectifier ring plate 7 is fixedly set at the left end of the duct 1 by limiting fit with the inner wall of the left end of the duct 1, by the plug-in fit of the second slots 74 with the second brackets 12 and by the connecting piece 8.

[0036] The first bracket 11 is fixedly connected to the inner wall of the right end of the duct 1 by bolts at one end.

[0037] A partition plate 41 is fixedly installed inside the motor base 4. The interior of the motor base 4 is divided into a first placement slot 42 and a second placement slot 43 with openings by the partition plate 41. One end of the underwater motor 2 is placed in the first placement slot 42. A control unit for controlling the rotation of the underwater motor 2 is provided in the second placement slot 43. A second fairing 431 is fixedly installed at the opening of the second placement slot 43.

[0038] The blade housing 3 has a closed end 31 and a sleeve end 32. The blade is fixedly mounted on the outer wall of the blade housing 3. The blade housing 3 is sleeved on the underwater motor 2 through the sleeve end 32. The closed end 31 is provided with a through hole 311 that communicates with the interior of the blade housing 3. The underwater motor 2 is provided with a first water inlet / outlet space 21 that corresponds to the through hole 311 and allows water to flow through. A second water inlet / outlet space 9 is formed between the sleeve end 32 of the blade housing 3 and the opening of the first placement groove 42, allowing water to flow through.

[0039] The underwater motor 2 is an external rotor motor, which has a rotating shaft, stator coils, magnetic blocks and an outer rotor housing. The closed end 31 of the blade housing 3 is provided with a through hole, and the rotor housing is provided with a corresponding hole that corresponds to the through hole. Both the through hole and the corresponding hole are provided with threads, and there are also bolts that can form a threaded engagement with the threads. After the blade housing 3 is fitted onto the underwater motor 2, it is fixedly connected to the outer rotor housing by the bolt engaging with the threads in the through hole and the corresponding hole. After the blade housing 3 is fixedly fitted onto the underwater motor 2, there is a gap between the fitted end 32 of the blade housing 3 and the opening of the first placement groove 42. This gap is the second water inlet / outlet space 9.

[0040] The structure of the external rotor motor is existing technology and will not be described here; the stator coil is potted with glue, which can effectively waterproof it.

[0041] The bottom of the first placement groove 42 is provided with an embedding groove, and the embedding groove is provided with a sealing ring; the second placement groove 43 is filled with electronic potting compound, and in addition to filling with electronic potting compound, sealant can be used to further seal the gap.

[0042] The working principle of this invention is as follows: After the water flows into the first rectifier ring plate 6, it is guided by the first guide slope 632 of the first rectifier blade 63 into the concave part 631, resulting in more water entering the duct 1. The water then flows out from the first guide slope 632 on the other side of the first rectifier blade 63. After the water flows into the location of the blade housing 3, the underwater motor 2 drives the rotor housing to rotate, thereby driving the blade housing 3 to rotate synchronously. After the blade rotates, the water flows into the second rectifier ring plate 7. Guided by the second guide slope of the second rectifier plate 73, the water flows into the central convex part 731, increasing the potential energy of the water flow. The water then flows out from the second guide slope 732 on the other side of the first rectifier plate 63. After being guided by the second guide slope 732 facing outward on the second rectifier ring plate 7, the water flow can be discharged from the left end of the duct 1 in a more concentrated manner. This can rectify the discharged water flow, making the discharged water flow more concentrated, ensuring the accuracy of the direction of the discharged water flow, and reducing the situation of directional deviation caused by water flow turbulence.

[0043] As water flows through the blade housing 3, a small amount of water can enter the underwater motor 2 through the through hole 311 and the first inlet / outlet water space 21. Heat conversion occurs inside the underwater motor 2, thereby cooling the interior of the underwater motor 2 and extending its service life. After heat conversion, the water finds gaps inside the underwater motor 2 and can exit through the second inlet / outlet water space. Conversely, water also enters the underwater motor 2 through the second inlet / outlet water space and exits through the first inlet / outlet water space.

[0044] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An underwater propulsion device comprising a duct (1), an underwater motor (2), and a blade housing (3), wherein the blade housing (3) is connected to the rotor housing of the underwater motor (2), and the blade housing (3) rotates synchronously with the rotor housing as the underwater motor (2) operates to drive the blades to rotate; characterized in that: The duct (1) has a right end and a left end. Multiple first supports (11) are fixedly installed on the inner wall of the right end of the duct (1) in the direction of the central axis of the duct (1). A motor base (4) is fixedly connected to the same end of each of the multiple first supports (11). Multiple second supports (12) are fixedly connected to the inner wall of the left end of the duct (1) in the direction of the central axis of the duct (1). A mounting ring (5) is fixedly connected to the same end of each of the multiple second supports (12). A first rectifier ring plate (6) is fitted onto the motor base (4) and forms a limiting fit with the inner wall of the right end of the duct (1). The first rectifier ring plate (6) is connected to the duct (1) via a connection with the inner wall of the right end of the duct (1). The inner wall of the right end of the duct (1) is limited between the inner wall of the duct (1) and the first bracket (11); a second rectifier ring plate (7) is also provided, which can form a limiting fit with the inner wall of the left end of the duct (1). The mounting ring (5) is provided with a connector (8) for limiting the second rectifier ring plate (7) to the left end of the duct (1). The second rectifier ring plate (7) is fixedly connected to the mounting ring (5) through the connector (8); the underwater motor (2) has a control end and a rotating end. One end of the underwater motor (2) is placed in the motor base (4), and the other end of the underwater motor (2) extends into the interior of the duct (1).

2. The underwater thruster according to claim 1, characterized in that: The first rectifier ring plate (6) has a first outer ring (61) and a central ring (62) arranged concentrically. A plurality of first rectifier blades (63) are fixedly connected between the first outer ring (61) and the first central ring (62) and are distributed around the central circumference of the central axis. The second rectifier ring plate (7) has a second outer ring (71) and a central cover (72) arranged concentrically. A plurality of second rectifier blades (73) are fixedly connected between the second outer ring (71) and the central cover (72) and are distributed around the central circumference of the central axis. The first rectifier blade (63) has a concave portion (631) extending along the extension direction in the middle of both sides. The concave portion (631) has a first drainage slope (632) extending outward on both sides. The second rectifier blade (73) has a convex portion (731) extending along the extension direction in the middle of both sides. The convex portion (731) has a second drainage slope (732) extending outward on both sides.

3. An underwater propulsion device according to claim 2, characterized in that: The central cover (72) is the first fairing. The interior of the central cover (72) is fixedly provided with a screw hole. The connector (8) includes a screw (81) that can form a threaded engagement with the screw hole and a support seat (82) that is fixedly disposed inside the mounting ring (5) and allows the screw (81) to pass through. The central cover (72) passes through the support seat (82) through the screw (81) and is fixedly disposed at the left end of the duct (1) after threaded engagement with the screw hole.

4. An underwater propulsion device according to claim 1, characterized in that: The first rectifier ring plate (6) is provided with a plurality of first slots (64) that correspond one-to-one with each of the first brackets (11) and can be inserted into the first brackets (11) to form a plug-in fit. The first rectifier ring plate (6) is fixedly set at the right end of the duct (1) by limiting fit with the inner wall of the right end of the duct (1) and by the plug-in fit of the first slots (64) and the first brackets (11). The second rectifier ring plate (7) is provided with a plurality of second slots (74) that correspond one-to-one with each of the second brackets (12) and can be inserted into the second brackets (12) to form a plug-in fit. The second rectifier ring plate (7) is fixedly set at the left end of the duct (1) by limiting fit with the inner wall of the left end of the duct (1), by the plug-in fit of the second slots (74) and the second brackets (12) and by the connecting piece (8).

5. An underwater thruster according to claim 1, characterized in that: The motor base (4) is fixedly provided with a partition plate (41). The interior of the motor base (4) is divided into a first placement slot (42) and a second placement slot (43) with openings by the partition plate (41). One end of the underwater motor (2) is placed in the motor base (4) and placed in the first placement slot (42). The second placement slot (43) is provided with a control unit for controlling the rotation of the underwater motor (2). A second fairing (431) is fixedly provided at the opening of the second placement slot (43).

6. An underwater thruster according to claim 5, characterized in that: The blade shell (3) has a closed end (31) and a sleeve end (32). The blade shell (3) is sleeved on the underwater motor (2) through the sleeve end (32). The closed end (31) is provided with a through hole (311) that communicates with the interior of the blade shell (3). The underwater motor (2) is provided with a first water inlet / outlet space (21) that corresponds to the through hole (311) and allows water to flow through. A second water inlet / outlet space (9) is formed between the sleeve end (32) of the blade shell (3) and the opening of the first placement groove (42) for water to flow through.

7. An underwater propulsion device according to claim 5, characterized in that: The bottom of the first placement groove (42) is provided with an embedding groove, and the embedding groove is provided with a sealing ring; the second placement groove (43) is filled with electronic potting compound.

Images