A cleaning device for marine engine exhaust pipes

Abstract

This invention belongs to the field of exhaust pipe cleaning technology and discloses a marine engine exhaust pipe cleaning device, including an exhaust pipe body, a rotating shaft rotatably connected to the exhaust pipe body, and a transmission box mounted on the exhaust pipe body. The transmission box contains a first drive assembly for controlling the rotation of the rotating shaft. A fixed seat is fixedly connected to the rotating shaft, and a fixed ring is rotatably mounted on the fixed seat. This invention utilizes the operation of a first motor to control the rotation of the rotating shaft, causing the fixed ring to flip and align with the exhaust port of the exhaust pipe body. Then, controlling the operation of a third gear causes a gear plate to move along with a fixed plate, gradually extending the cleaning plate into the exhaust pipe body. Next, using an electric push rod, a moving rod pushes a fourth gear to move, allowing a sliding plate to slide on the surface of a retaining cylinder, thus adjusting the expansion of the cleaning plate and enabling it to properly clean the exhaust pipe body.

Description

Technical Field

[0001] This invention belongs to the field of exhaust pipe cleaning technology, specifically a cleaning device for marine engine exhaust pipes. Background Technology

[0002] Marine engines, also known as marine diesel engines, are highly efficient, economical, easy to start, and adaptable to various types of vessels. Since their invention, they have been rapidly adopted as propulsion power for ships. Marine diesel engines are now the primary power source for civilian ships, small and medium-sized vessels, and conventional submarines. Marine diesel engines can be categorized into main engines and auxiliary engines based on their role in the ship. The main engine provides propulsion, while the auxiliary engine drives generators, air compressors, or water pumps, etc. Marine diesel engines are generally classified into high-speed, medium-speed, and low-speed engines. The table lists the main performance indicators for these three types of diesel engines.

[0003] Patent CN116498425A discloses a marine engine stern exhaust pipe structure, comprising a cooling pipe and a guide pipe. The guide pipe is located at one end of the cooling pipe, which is situated inside the stern, while the guide pipe is located outside the stern. The cooling pipe has a hollow inner cavity, and its outer wall is provided with a cooling chamber. A water spray nozzle is located at the other end of the cooling chamber. The guide pipe includes a bend and a straight pipe, with one end of the bend connected to the cooling pipe and the other end connected to the straight pipe. A flange is provided between the bend and the cooling pipe. By employing this technical solution, the cooling chamber on the outer wall of the cooling pipe and the flange between the bend and the cooling pipe allow for a separate design of the stern exhaust pipe from the hull, facilitating installation and maintenance, improving the thermal efficiency of the stern exhaust pipe, preventing deformation, ensuring the safety of ship navigation, and enhancing the reliability of the stern exhaust pipe structure.

[0004] Including the aforementioned patents and existing known technologies, after exhaust gas is discharged for a long time, carbon deposits and dust are easily formed inside the exhaust pipe. Carbon compounds and other pollutant particles will exist in the inner cavity of the exhaust pipe. When the carbon deposits reach a certain level, they can easily lead to the exhaust efficiency of the exhaust pipe. Moreover, when cleaning the exhaust pipe, most of the time it is done by workers using handheld cleaning devices to scrape the inside of the exhaust pipe back and forth. Therefore, the cleaning method is time-consuming and labor-intensive, which increases the workload of personnel and further reduces the cleaning efficiency. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art by proposing a cleaning device for marine engine exhaust pipes.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a marine engine exhaust pipe cleaning device, comprising an exhaust pipe body, a rotating shaft rotatably connected to the exhaust pipe body, and a transmission box mounted on the exhaust pipe body, wherein the transmission box is provided with a first drive component for controlling the rotation of the rotating shaft, a fixed seat is fixedly connected to the rotating shaft, a fixed ring is rotatably provided on the fixed seat, and a displacement mechanism is provided on the fixed ring.

[0007] The displacement mechanism includes two guide rods slidably disposed within a fixed ring. The right ends of the two guide rods are fixedly connected to a fixed plate. The fixed ring is also provided with a transmission assembly for moving the fixed plate. The fixed plate is provided with a cleaning mechanism and a pushing mechanism.

[0008] The pushing mechanism includes a fixed cylinder fixed to a fixed plate, a rotating shaft rotatably connected to the fixed cylinder, and an electric push rod mounted on the fixed plate. The telescopic end of the electric push rod extends into the fixed cylinder and is fixedly connected to a moving rod. One end of the moving rod is fixedly connected to a push plate, which is sleeved on the rotating shaft. A second drive assembly for controlling the rotation of the cleaning mechanism is provided between the push plate and the moving rod.

[0009] The cleaning mechanism includes a circumferential array of cleaning plates and a snap-fit ​​cylinder sleeved on a rotating shaft. A first fixed plate, a second fixed plate, and a sliding plate are fixedly connected to the snap-fit ​​cylinder. Each cleaning plate has a connecting plate hinged to both its left and right ends, and one end of each connecting plate is respectively hinged to the first fixed plate and the sliding plate. A second compression spring is fixedly connected between the sliding plate and the second fixed plate, and the second compression spring is sleeved on the surface of the snap-fit ​​cylinder.

[0010] In the above technical solution, preferably, the first drive assembly includes a first motor installed in the transmission box and a second gear fixed to one end of the rotating shaft, wherein the output end of the first motor is fixedly connected to the first gear that meshes with the second gear.

[0011] In the above technical solution, preferably, a dustproof net is fixedly connected to the bottom surface of the fixing base, and the dustproof net is adapted to the exhaust port of the exhaust pipe body.

[0012] In the above technical solution, preferably, the bottom end of the fixing ring is fixedly connected to a base, the bottom surface of the base is rotatably connected to the top end of the fixing seat, a sliding plate is slidably arranged inside the base, a first compression spring is fixedly connected to the sliding plate, and the top end of the first compression spring is fixedly connected to the base, and two insert rods are fixedly connected to the bottom surface of the sliding plate, and both insert rods are inserted into the fixing seat.

[0013] In the above technical solution, preferably, the transmission component includes a toothed plate slidably disposed within a fixed ring and a second motor mounted on the fixed ring. The right end of the toothed plate is fixedly connected to the fixed plate, and the output end of the second motor is fixedly connected to a third gear that meshes with the toothed plate.

[0014] In the above technical solution, preferably, the second drive assembly includes a third motor mounted on the moving rod and a fourth gear rotatably connected to one side of the push plate. The output end of the third motor is fixedly connected to a fifth gear that meshes with the fourth gear, and the sliding plate is inserted into the fourth gear.

[0015] In the above technical solution, preferably, a positioning component is provided between the snap-fit ​​cylinder and the rotating shaft;

[0016] The positioning assembly includes a second mounting cavity formed within a rotating shaft and a first mounting cavity formed within a snap-fit ​​cylinder. A pressing plate is slidably disposed within the first mounting cavity, and a third compression spring fixedly connected to the pressing plate is fixedly connected to the pressing plate. A push rod is fixedly connected to the pressing plate. A slot communicating with the first mounting cavity is formed on the inner wall of the snap-fit ​​cylinder. A snap plate is slidably disposed within the second mounting cavity, and a fourth compression spring fixedly connected to the snap plate is fixedly connected to the snap plate. The snap plate is inserted into the slot, and the push rod contacts the snap plate.

[0017] In the above technical solution, preferably, a water inlet pipe is fixedly connected to the fixed plate, the left end of the water inlet pipe is connected to an external water source through a flexible hose, the bottom end of the water inlet pipe is connected to a delivery pipe, and one end of the delivery pipe passes through the fixed cylinder and is connected to the rotating shaft. Several spray holes are opened on the surface of both the rotating shaft and the snap-fit ​​cylinder.

[0018] In the above technical solution, preferably, each of the cleaning plates is detachably connected to a cleaning brush.

[0019] In the above technical solution, preferably, the rotating shaft is rotatably connected to the fixed cylinder through a rotary joint.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] This invention utilizes the operation of a first motor to control the rotation of a shaft, causing the fixed ring to flip and align with the exhaust port of the exhaust pipe body. Then, controlling the operation of a third gear causes the gear plate to move along with the fixed plate, gradually extending the cleaning plate into the exhaust pipe body. Next, the operation of an electric push rod causes a moving rod to push a fourth gear, allowing the sliding plate to slide on the surface of the retaining cylinder, thus adjusting the expansion of the cleaning plate and enabling it to properly clean the exhaust pipe body. Simply activating the third motor then causes the fifth gear to drive the fourth gear. The rotation of the clamping cylinder drives the rotation of the rotating shaft. Simultaneously, external water is supplied to the inlet pipe and then to the rotating shaft via the delivery pipe. Finally, the water is sprayed out through the nozzle, thus cleaning the inner wall of the exhaust pipe. During the cleaning process, the forward and reverse rotation of the third gear can be controlled, allowing the cleaning plate to clean different positions within the exhaust pipe. This eliminates the need for personnel to manually scrape the exhaust pipe repeatedly, effectively improving the cleaning efficiency and saving time and effort. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the present invention from a bottom view;

[0024] Figure 3 This is a frontal sectional view of the present invention;

[0025] Figure 4 This is a schematic diagram of the positioning component of the present invention;

[0026] Figure 5 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A;

[0027] Figure 6 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B;

[0028] Figure 7 For the present invention Figure 3 Enlarged schematic diagram of the structure at point C;

[0029] Figure 8 For the present invention Figure 3 Enlarged schematic diagram of the structure at point D;

[0030] Figure 9 For the present invention Figure 4 Enlarged schematic diagram of the structure at point E.

[0031] In the diagram: 1. Exhaust pipe body; 2. Transmission box; 21. Rotating shaft; 22. First motor; 23. First gear; 24. Second gear; 3. Fixed base; 4. Dustproof net; 5. Fixed ring; 51. First compression spring; 52. Base; 53. Slide plate; 54. Insert rod; 61. Fixed plate; 62. Tooth plate; 63. Third gear; 64. Second motor; 65. Guide rod; 71. Water inlet pipe; 72. Conveying pipe; 73. Spray nozzle; 81. Clip-on cylinder; 82. Second fixed plate; 83. 84. Connecting plate; 85. Cleaning plate; 86. Second compression spring; 87. Sliding plate; 88. First fixed plate; 91. Third motor; 92. Fifth gear; 93. Fourth gear; 100. Fixed cylinder; 101. Moving rod; 102. Rotating shaft; 103. Push plate; 104. Electric push rod; 200. Pressing plate; 201. First mounting cavity; 202. Third compression spring; 203. Slot; 204. Top rod; 205. Second mounting cavity; 206. Fourth compression spring; 207. Clamping plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figures 1 to 9 As shown, the present invention provides a marine engine exhaust pipe cleaning device, including an exhaust pipe body 1, a rotating shaft 21 rotatably connected to the exhaust pipe body 1, and a transmission box 2 installed on the exhaust pipe body 1. The rotating shaft 21 is mounted on the exhaust pipe body 1 by a mounting seat to ensure the stability of the rotating shaft 21 during rotation. The transmission box 2 is provided with a first drive component for controlling the rotation of the rotating shaft 21, so that the first drive component can drive the rotating shaft 21 to rotate when in operation. A reinforcing rib can be provided at the exhaust port of the exhaust pipe body 1 to ensure the stability of the exhaust port of the exhaust pipe body 1 and avoid deformation. A fixed seat 3 is fixedly connected to the rotating shaft 21, and a fixed ring 5 is rotatably provided on the fixed seat 3, so that the fixed ring 5 can rotate on the fixed seat 3 to facilitate subsequent maintenance of the components on the fixed ring 5 by personnel. A displacement mechanism is provided on the fixed ring 5.

[0034] The displacement mechanism includes two guide rods 65 slidably disposed within the fixed ring 5, with limit plates provided at the left ends of both guide rods 65 to prevent them from slipping out of the fixed ring 5. A fixed plate 61 is fixedly connected to the right ends of both guide rods 65, ensuring that the fixed plate 61 also prevents the guide rods 65 from slipping out of the fixed ring 5 and guarantees the sliding stability of the two guide rods 65 within the fixed ring 5. A transmission assembly for moving the fixed plate 61 is also provided on the fixed ring 5. This transmission assembly controls the displacement of the two guide rods 65 within the fixed ring 5, further enabling subsequent actions. A cleaning mechanism and a pushing mechanism are provided on the fixed plate 61.

[0035] The pushing mechanism includes a fixed cylinder 100 fixed to a fixed plate 61, a rotating shaft 102 rotatably connected to the fixed cylinder 100, and an electric push rod 104 mounted on the fixed plate 61. The telescopic end of the electric push rod 104 extends into the fixed cylinder 100 and is fixedly connected to a moving rod 101. Sliding grooves are provided on both the upper and lower sides of the surface of the fixed cylinder 100 to ensure that the moving rod 101 can move under the operation of the electric push rod 104. One end of the moving rod 101 is fixedly connected to a push plate 103, and the push plate 103 is sleeved on the rotating shaft 102. When the rotating shaft 102 rotates, the push plate 103 will not rotate, so that the push plate 103 is used for the expansion and adjustment of the cleaning mechanism. A second drive assembly for controlling the rotation of the cleaning mechanism is provided between the push plate 103 and the moving rod 101. The rotation of the cleaning mechanism can be ensured by the setting of the second drive assembly.

[0036] The cleaning mechanism includes a circular array of cleaning plates 84 and a snap-fit ​​cylinder 81 sleeved on a rotating shaft 102, such that the snap-fit ​​cylinder 81 also drives the rotating shaft 102 to rotate when it rotates. A first fixed plate 87 and a second fixed plate 82 are fixedly connected to the snap-fit ​​cylinder 81, and a sliding plate 86 is slidably disposed thereon. Each cleaning plate 84 has a connecting plate 83 hinged to both its left and right ends, and one end of each connecting plate 83 is respectively hinged to the first fixed plate 87 and the sliding plate 86. A second compression spring 85 is fixedly connected between the sliding plate 86 and the second fixed plate 82. With the second compression spring 85 in place, the sliding plate 86 can move to the right in a free state, so as to ensure that the push plate 103 pushes the sliding plate 86, so that the cleaning plate 84 expands better in the exhaust pipe body 1, thereby achieving the cleaning of the inner wall of the exhaust pipe body 1 by the cleaning plate 84. The second compression spring 85 is sleeved on the surface of the snap-fit ​​cylinder 81. The mechanics, parts and equipment in this device all adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0037] like Figure 8As shown, the first drive assembly includes a first motor 22 installed in the transmission box 2 and a second gear 24 fixed to one end of the rotating shaft 21. The output end of the first motor 22 is fixedly connected to a first gear 23 that meshes with the second gear 24. With the above structure, the rotation of the rotating shaft 21 can be controlled by the operation of the first motor 22, thereby realizing the swing of the fixed ring 5 to the exhaust port of the exhaust pipe body 1, making the operation more convenient. In addition, the first motor 22 has a self-locking feature.

[0038] like Figure 1 , Figure 2 As shown, a dustproof net 4 is fixedly connected to the bottom surface of the fixed base 3, and the dustproof net 4 is adapted to the exhaust port of the exhaust pipe body 1. With the setting of the dustproof net 4, when it is not necessary to clean the inside of the exhaust pipe body 1, the dustproof net 4 can be aligned with the exhaust port of the exhaust pipe body 1, thereby playing a role in preventing dust inside the exhaust pipe body 1.

[0039] like Figure 5 , Figure 8 As shown, a base 52 is fixedly connected to the bottom end of the fixed ring 5. The bottom surface of the base 52 is rotatably connected to the top end of the fixed seat 3. A sliding plate 53 is slidably arranged inside the base 52. A first compression spring 51 is fixedly connected to the sliding plate 53, and the top end of the first compression spring 51 is fixedly connected to the base 52. Two insert rods 54 are fixedly connected to the bottom surface of the sliding plate 53, and both insert rods 54 are inserted into the fixed seat 3. With the above structure, the fixed ring 5 can be more stably rotated on the fixed seat 3. When it is necessary to rotate the fixed ring 5, simply push the sliding plate 53 upward to pull the insert rods 54 out of the fixed seat 3, and the fixed ring 5 can be rotated. This facilitates the maintenance of the electrical equipment on the fixed ring 5 by personnel. The fixed ring 5 can also be rotated to the rear so that the structural components on the fixed ring 5 are directly above the exhaust pipe body 1, avoiding imbalance at the exhaust port of the exhaust pipe body 1.

[0040] like Figure 1 , Figure 2 , Figure 3 As shown, the transmission assembly includes a toothed plate 62 slidably disposed within a fixed ring 5 and a second motor 63 mounted on the fixed ring 5. The right end of the toothed plate 62 is fixedly connected to a fixed plate 61. The output end of the second motor 63 is fixedly connected to a third gear 64 that meshes with the toothed plate 62. With the above structure, the operation of the second motor 63 can drive the third gear 64 to slide the toothed plate 62 within the fixed ring 5, further realizing the movement of the fixed plate 61. This allows for the movement of the subsequent cleaning mechanism, thereby better adjusting its position within the exhaust pipe body 1 and cleaning at different depths without requiring personnel to manually scrape the exhaust pipe with a cleaning device.

[0041] like Figure 1 , Figure 6 , Figure 7 As shown, the second drive assembly includes a third motor 91 mounted on the moving rod 101 and a fourth gear 93 rotatably connected to one side of the push plate 103. The output end of the third motor 91 is fixedly connected to a fifth gear 92 that meshes with the fourth gear 93. The sliding plate 86 is inserted into the fourth gear 93. With the above structure, the fifth gear 92 can rotate the fourth gear 93 when the third motor 91 is running, so that the fourth gear 93 can rotate on the push plate 103. Furthermore, the fourth gear 93 drives the sliding plate 86 to rotate, and the rotation of the sliding plate 86 causes the snap-fit ​​cylinder 81 to rotate on the rotating shaft 102, thereby realizing the cleaning plate 84 to thoroughly clean the inner wall of the exhaust pipe body 1.

[0042] like Figure 4 , Figure 9 As shown, a positioning assembly is provided between the snap-fit ​​cylinder 81 and the rotating shaft 102;

[0043] The positioning assembly includes a second mounting cavity 205 formed within the rotating shaft 102 and a first mounting cavity 201 formed within the snap-fit ​​cylinder 81. A pressing plate 200 is slidably disposed within the first mounting cavity 201, and a third compression spring 202 fixedly connected to the pressing plate 200 is also disposed thereon. A push rod 204 is fixedly connected to the pressing plate 200. A snap-fit ​​groove 203 communicating with the first mounting cavity 201 is formed on the inner wall of the snap-fit ​​cylinder 81. A snap-fit ​​plate 207 is slidably disposed within the second mounting cavity 205, and a fourth compression spring 206 fixedly connected to the snap-fit ​​plate 207 is also disposed thereon. The snap-fit ​​plate 207 is inserted into the snap-fit ​​groove 203. Inside, the top rod 204 contacts the clamping plate 207. With the above structure, when the clamping cylinder 81 is sleeved on the rotating shaft 102, the clamping plate 207 can be inserted into the clamping slot 203 by itself, preventing the clamping cylinder 81 from falling freely off the rotating shaft 102. This provides a positioning function for the clamping cylinder 81. The clamping cylinder 81 can be removed only after pressing the pressing plate 200. By pressing the pressing plate 200, the top rod 204 squeezes the clamping plate 207 into the second mounting cavity 205, thereby releasing the positioning of the clamping cylinder 81. The clamping cylinder 81 can then be directly pulled out.

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7As shown, a water inlet pipe 71 is fixedly connected to the fixed plate 61. The left end of the water inlet pipe 71 is connected to an external water source through a flexible hose. When the fixed ring 5 is rotated to align with the exhaust port of the exhaust pipe body 1, the water inlet pipe 71 can rotate normally to ensure the normal delivery of water. The bottom end of the water inlet pipe 71 is connected to a delivery pipe 72, and one end of the delivery pipe 72 passes through the fixed cylinder 100 and is connected to the rotating shaft 102. Several spray holes 73 are opened on the surface of the rotating shaft 102 and the snap-fit ​​cylinder 81. With the above structure, external water can be delivered into the water inlet pipe 71 and delivered into the rotating shaft 102 through the delivery pipe 72. Finally, the water will be sprayed out through the spray holes 73, thereby cleaning the inner wall of the exhaust pipe body 1.

[0045] like Figure 6 As shown, each cleaning plate 84 is detachably connected to a cleaning brush. The detachable cleaning brush allows personnel to remove and replace the cleaning brush on the cleaning plate 84 after use.

[0046] like Figure 7 As shown, the rotating shaft 102 is rotatably connected to the fixed cylinder 100 through a rotary joint. The rotary joint is a mature existing technology that enables water to be transported from the conveying pipe 72 to the rotating shaft 102, and the rotating shaft 102 can also maintain normal rotation.

[0047] The working principle and usage process of this invention are as follows: When cleaning the inside of the exhaust pipe body 1, the first motor 22 is used to control the rotation of the rotating shaft 21, causing the fixed ring 5 to flip and align with the exhaust port of the exhaust pipe body 1. Then, the third gear 63 is controlled to move the toothed plate 62 and the fixed plate 61 together, so that the cleaning plate 84 gradually extends into the exhaust pipe body 1. Next, the electric push rod 104 is used to move the moving rod 101 to push the fourth gear 93 to move, so that the sliding plate 86 slides on the surface of the clamping cylinder 81, thereby adjusting the expansion of the cleaning plate 84 so that the cleaning plate 84 can clean the inside of the exhaust pipe body 1 normally. When the third motor 91 is started, the fifth gear 92 drives the fourth gear 93 to rotate, thereby realizing the rotation of the clamping cylinder 81 and driving the rotation of the rotating shaft 102. At the same time, external water is supplied to the inlet pipe 71 and then to the rotating shaft 102 through the delivery pipe 72. Finally, the water is sprayed through the nozzle. Water is sprayed out by 73, thus cleaning the inner wall of the exhaust pipe body 1. During the cleaning process, the third gear 63 can be controlled to rotate forward and backward, so that the cleaning plate 84 can clean different positions inside the exhaust pipe body 1. There is no need for personnel to hold the cleaning device and scrape back and forth inside the exhaust pipe body 1, which effectively improves the cleaning efficiency of the exhaust pipe body 1 and saves more time and effort. After cleaning is completed, the cleaning plate 84 can be controlled to extend out of the exhaust pipe body 1, and under the operation of the first motor 22, the fixing ring 5 is flipped to the top of the exhaust pipe body 1. Personnel can also directly rotate the fixing ring 5 on the fixing seat 3 to maintain the electrical equipment on the fixing ring 5. Under the operation of the third gear 63, the fixing plate 61 can be moved closer to the fixing ring 5, which makes it easier for personnel to remove and replace the cleaning brush on the cleaning plate 84, and also makes it easier to remove the entire snap-fit ​​cylinder 81 for maintenance. The disassembly and assembly of the snap-fit ​​cylinder 81 is also more convenient.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A marine engine exhaust pipe cleaning device, comprising an exhaust pipe body (1), characterized in that: It also includes a rotating shaft (21) rotatably connected to the exhaust pipe body (1) and a transmission box (2) installed on the exhaust pipe body (1), and a first drive assembly for controlling the rotation of the rotating shaft (21) is provided in the transmission box (2). A fixed seat (3) is fixedly connected to the rotating shaft (21), a fixed ring (5) is rotatably provided on the fixed seat (3), and a displacement mechanism is provided on the fixed ring (5). The displacement mechanism includes two guide rods (65) slidably disposed within the fixed ring (5), and a fixed plate (61) is fixedly connected to the right end of the two guide rods (65). A transmission assembly for moving the fixed plate (61) is also provided on the fixed ring (5), and a cleaning mechanism and a pushing mechanism are provided on the fixed plate (61). The transmission assembly includes a toothed plate (62) slidably disposed in a fixed ring (5) and a second motor (63) mounted on the fixed ring (5). The right end of the toothed plate (62) is fixedly connected to a fixed plate (61), and the output end of the second motor (63) is fixedly connected to a third gear (64) that meshes with the toothed plate (62). The pushing mechanism includes a fixed cylinder (100) fixed to a fixed plate (61), a rotating shaft (102) rotatably connected to the fixed cylinder (100), and an electric push rod (104) mounted on the fixed plate (61). The telescopic end of the electric push rod (104) extends into the fixed cylinder (100) and is fixedly connected to a moving rod (101). One end of the moving rod (101) is fixedly connected to a push plate (103), and the push plate (103) is sleeved on the rotating shaft (102). A second drive assembly for controlling the rotation of the cleaning mechanism is provided between the push plate (103) and the moving rod (101). The second drive assembly includes a third motor (91) mounted on a moving rod (101) and a fourth gear (93) rotatably connected to one side of a push plate (103). The output end of the third motor (91) is fixedly connected to a fifth gear (92) that meshes with the fourth gear (93). The sliding plate (86) is inserted into the fourth gear (93). The cleaning mechanism includes a circumferential array of cleaning plates (84) and a snap-fit ​​cylinder (81) sleeved on a rotating shaft (102). A first fixed plate (87), a second fixed plate (82), and a sliding plate (86) are fixedly connected to the snap-fit ​​cylinder (81). Each cleaning plate (84) has a connecting plate (83) hinged to both its left and right ends. One end of each connecting plate (83) is hinged to the first fixed plate (87) and the sliding plate (86) respectively. A second compression spring (85) is fixed between the sliding plate (86) and the second fixed plate (82), and the second compression spring (85) is sleeved on the surface of the snap-fit ​​cylinder (81). A positioning assembly is provided between the snap-fit ​​cylinder (81) and the rotating shaft (102); The positioning assembly includes a second mounting cavity (205) opened in the rotating shaft (102) and a first mounting cavity (201) opened in the snap-fit ​​cylinder (81). A pressing plate (200) is slidably arranged in the first mounting cavity (201) and a third compression spring (202) fixedly connected to the pressing plate (200). A push rod (204) is fixedly connected to the pressing plate (200). A slot (203) communicating with the first mounting cavity (201) is opened on the inner wall of the snap-fit ​​cylinder (81). A snap plate (207) is slidably arranged in the second mounting cavity (205) and a fourth compression spring (206) fixedly connected to the snap plate (207). The snap plate (207) is inserted into the slot (203) and the push rod (204) is in contact with the snap plate (207).

2. The marine engine exhaust pipe cleaning device according to claim 1, characterized in that: The first drive assembly includes a first motor (22) installed in the transmission box (2) and a second gear (24) fixed to one end of the rotating shaft (21). The output end of the first motor (22) is fixed to a first gear (23) that meshes with the second gear (24).

3. A marine engine exhaust pipe cleaning device according to claim 1, characterized in that: The bottom surface of the fixed base (3) is fixedly connected with a dustproof net (4), and the dustproof net (4) is adapted to the exhaust port of the exhaust pipe body (1).

4. A marine engine exhaust pipe cleaning device according to claim 1, characterized in that: The bottom end of the fixed ring (5) is fixedly connected to the base (52), the bottom surface of the base (52) is rotatably connected to the top of the fixed seat (3), a sliding plate (53) is slidably arranged inside the base (52), a first compression spring (51) is fixedly connected to the sliding plate (53), and the top of the first compression spring (51) is fixedly connected to the base (52). Two insert rods (54) are fixedly connected to the bottom surface of the sliding plate (53), and both insert rods (54) are inserted into the fixed seat (3).

5. A marine engine exhaust pipe cleaning device according to claim 1, characterized in that: A water inlet pipe (71) is fixedly connected to the fixed plate (61). The left end of the water inlet pipe (71) is connected to an external water source through a flexible hose. The bottom end of the water inlet pipe (71) is connected to a delivery pipe (72). One end of the delivery pipe (72) passes through the fixed cylinder (100) and is connected to the rotating shaft (102). Several spray holes (73) are opened on the surface of the rotating shaft (102) and the snap-fit ​​cylinder (81).

6. A marine engine exhaust pipe cleaning device according to claim 1, characterized in that: Each of the cleaning plates (84) is detachably connected to a cleaning brush.

7. A marine engine exhaust pipe cleaning device according to claim 5, characterized in that: The rotating shaft (102) is rotatably connected to the fixed cylinder (100) via a rotary joint.

Images