Two-way leak-proof and extended durability recyclable tail shaft front seal device

Abstract

The invention discloses a two-way anti-leakage, extended-life, recyclable tail shaft front sealing device, which relates to the technical field of tail shafts. The two-way anti-leakage, extended-life, recyclable tail shaft front sealing device comprises a first sealing mechanism, a second sealing mechanism is arranged on the inner side of the first sealing mechanism, a protective ring is fixedly connected to the surface of the first sealing mechanism, a gas filling valve is fixedly connected to the surface of the first sealing mechanism, the gas filling valve is located on the inner side of the protective ring, and a docking ring is slidably connected to the inner side of the first sealing mechanism. The two-way anti-leakage, extended-life, recyclable tail shaft front sealing device ensures the ease of replacing rubber pads of the device, and ensures that when the rubber pad is corroded by seawater after being used for a period of time and fails to achieve good anti-leakage performance, the docking ring can be easily separated from the first sealing mechanism and the rubber pad can be replaced, thereby improving the ease of replacing the rubber pad between the first sealing mechanism and the second sealing mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of tail shafts, and in particular to a bidirectional anti-leakage, extended-life, and cyclic tail shaft front sealing device. Background Art

[0002] At present, more than 90% of the propeller shafts (tail shafts) of powered ships are lubricated with oil. In order to prevent sea (river, river) water from intruding into the ship along the propeller shaft (tail shaft) and the lubricating oil from leaking out, a tail shaft sealing device must be installed in the ship's tail shaft stern tube device. The tail shaft sealing device is divided into a front sealing device and a rear sealing device according to its layout position.

[0003] After consulting the literature, we learned that the bidirectional anti-leakage extended durability circulatory tail shaft front sealing device, during the use of the tail shaft front sealing device, in order to ensure the smooth rotation of the inner and outer shafts of the sealing device, the lubricating fluid is regularly delivered through the refueling valve, and in order to ensure the anti-leakage effect of the lubricating fluid, a rubber pad can be used to seal the gap at the connection of the inner and outer shafts. However, the service life of the rubber ring is limited. Due to the special installation position of the rubber pad of most sealing devices, the rubber pad on the sealing device cannot be easily separated. The rubber pad is usually replaced by disassembling the sealing device. This method leads to problems such as complicated operation and low efficiency when replacing the rubber pad. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a bidirectional leakage-proof, extended-duty, recyclable tail shaft front sealing device, which can solve the problem that due to the particularity of the rubber pad installation position of the sealing device, the rubber pad on the sealing device cannot be easily separated, and the rubber pad is usually replaced by disassembling the sealing device, which leads to complicated operation and low efficiency when replacing the rubber pad.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a two-way anti-leakage, extended-durability, recyclable tail shaft front sealing device, comprising a first sealing mechanism, a second sealing mechanism is arranged on the inner side of the first sealing mechanism, a protective ring is fixedly connected to the surface of the first sealing mechanism, a gas filling valve is fixedly connected to the surface of the first sealing mechanism, the gas filling valve is located on the inner side of the protective ring, a docking ring is slidably connected to the inner side of the first sealing mechanism, a rubber pad is arranged on the inner side of the first sealing mechanism, the surface of the rubber pad is arranged on the lower side of the docking ring, an inner groove is opened inside the first sealing mechanism, and a fixing device is arranged on the inner wall of the inner groove.

[0006] Preferably, a slide groove is provided on the surface of the protective ring, a slide rod is fixedly connected to the slide groove, a slide plate is slidably connected to the surface of the slide rod, and the surface of the slide plate is slidably connected to the inner wall of the slide groove.

[0007] Preferably, a first spring is slidably connected to the surface of the slide rod, and left and right ends of the first spring are respectively fixedly connected to the inner wall of the slide groove and the surface of the slide plate, and an adjustment plate is fixedly connected to the surface of the slide plate.

[0008] Preferably, there are two adjustment plates, the structures of the two adjustment plates are the same, and the inner sides of the two adjustment plates are inclined.

[0009] Preferably, the fixing device includes an inner block, the surface of the inner block is slidably connected to the inner wall of the inner groove, a second spring is fixedly connected to the right side of the inner block, the right end of the second spring is fixedly connected to the inner wall of the inner groove, a slot is provided on the surface of the docking ring, a fixing column is slidably connected inside the docking ring, the lower end of the fixing column is slidably connected to the inner wall of the inner block, a third spring is slidably sleeved on the surface of the fixing column, and the upper and lower ends of the third spring are respectively fixedly connected to the inner wall of the docking ring and the surface of the fixing column.

[0010] Preferably, the inner block and the slot are both triangular in shape, and the surface of the inner block is slidably connected to the inner wall of the slot.

[0011] Preferably, a handle is fixedly connected to the upper end of the fixing column, and an auxiliary groove is provided on the outer side of the docking ring.

[0012] Preferably, a sealing groove is provided on the upper side of the first sealing mechanism, a sealing ring is slidably connected to the inner wall of the sealing groove, and the upper side of the sealing ring is fixedly connected to the lower side of the docking ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The bidirectional anti-leakage and extended-life cyclic tail shaft front sealing device is characterized in that the operator releases the fixing column, and the fixing column enters the groove inside the inner block under the elastic force of the third spring, thereby forming a fixation between the first sealing mechanism and the docking ring. In summary, the rubber pad is sealed at the connection between the first sealing mechanism and the second sealing mechanism, thereby reducing the disadvantage of lubricating oil leakage. The simple operation docking between the docking ring and the first sealing mechanism ensures the ease of replacing the rubber pad of the device. When the rubber pad is corroded by seawater after being used for a period of time and fails to achieve good anti-leakage performance, the docking ring can be easily separated from the first sealing mechanism and the rubber pad can be replaced, thereby improving the ease of replacing the rubber pad between the first sealing mechanism and the second sealing mechanism.

[0015] (2) The bidirectional anti-leakage and extended-durability recyclable tail shaft front sealing device ensures a good sliding effect when the docking ring and the first sealing mechanism are docked through the triangular shape of the inner block and the slot, thereby ensuring the sensitivity of the inner block to slide in and out of the inner wall of the slot.

[0016] (3) When the two-way anti-leakage and extended-durability recyclable tail shaft front sealing device is separated from the first sealing mechanism by the operator controlling the docking ring, the operator only needs to control the docking ring through the auxiliary groove, and use the thumb of the operator's hand to lift the fixed column inside the docking ring through the handle, thereby separating the docking ring from the first sealing mechanism. This method can conveniently operate and control the docking ring, ensuring the simplicity of the operator's control and adjustment of the docking ring.

[0017] (4) The bidirectional anti-leakage and extended-life cyclic tail shaft front sealing device, when the sealing rubber pad is docked with the first sealing mechanism through the docking ring, can effectively increase the sealing effect of the docking between the sealing ring and the first sealing mechanism through the sealing ring and the sealing groove between the first sealing mechanism and the docking ring, thereby reducing the rate at which seawater passes through the first sealing mechanism and the docking ring to cause corrosion to the internal fixed structure, thereby ensuring a good fixed use effect between the docking ring and the first sealing mechanism.

[0018] (5) After the refueling is completed through the connecting head and the gas filling valve, when the connecting head and the gas filling valve are separated, the two adjustment plates have no extrusion pressure, and then the two adjustment plates are reset by the elastic performance of the two first springs. At this time, the two adjustment plates form a relative reset and closed effect. This method ensures that the gas filling valve can be quickly protected in all directions by the adjusting plate and the protective ring after use, thereby ensuring the protective performance of the gas filling valve to a certain extent, thereby ensuring the service life of the gas filling valve, and preventing the disadvantage of external impurities causing adsorption and clogging of the gas filling valve.

[0019] (6) When the bidirectional anti-leakage and extended-life recyclable tail shaft front sealing device is used through the first sealing mechanism and the second sealing mechanism, when it is necessary to flush lubricating oil to the connection between the first sealing mechanism and the second sealing mechanism through the gas filling valve, the operator only needs to control the connecting head of the filling mechanism to enter the inner side of the two adjustment plates, and squeeze the inclined shape of the inner side of the two adjustment plates through the connecting head, so that the two adjustment plates move back to back on the surface of the protective ring, and then the connecting head and the gas filling valve are connected and used. This method ensures the convenience of operation when the connecting head and the gas filling valve are connected, and reduces the tediousness of manual intervention to open the adjustment plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic structural diagram of the bidirectional leakage-proof and durability-extended recyclable tail shaft front sealing device of the present invention;

[0022] Figure 2It is a schematic diagram of the planar structure of the bidirectional anti-leakage and extended-life cyclic tail shaft front sealing device of the present invention;

[0023] Figure 3 This is a schematic diagram of the planar structure of the protection ring of the present invention;

[0024] Figure 4 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 5 This is a schematic diagram of the planar structure of the docking ring of the present invention;

[0026] Figure 6 It is a schematic diagram of the docking ring structure of the present invention.

[0027] Figure numerals: 1 first sealing mechanism, 2 second sealing mechanism, 3 protective ring, 4 gas filling valve, 5 slide groove, 6 slide rod, 7 slide plate, 8 adjustment plate, 9 first spring, 10 docking ring, 11 rubber pad, 12 inner groove, 13 inner block, 14 second spring, 15 slot, 16 fixing column, 17 third spring, 18 handle, 19 auxiliary groove, 20 sealing groove, 21 sealing ring. DETAILED DESCRIPTION

[0028] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] See also Figure 1-6 The present invention provides a technical solution: a bidirectional anti-leakage and extended durability cyclic tail shaft front sealing device, comprising a first sealing mechanism 1, a second sealing mechanism 2 is arranged on the inner side of the first sealing mechanism 1, a protective ring 3 is fixedly connected to the surface of the first sealing mechanism 1, a gas filling valve 4 is fixedly connected to the surface of the first sealing mechanism 1, the gas filling valve 4 is located on the inner side of the protective ring 3, a slide groove 5 is provided on the surface of the protective ring 3, a slide rod 6 is fixedly connected to the slide groove 5, a slide plate 7 is slidably connected to the surface of the slide rod 6, the surface of the slide plate 7 is slidably connected to the inner wall of the slide groove 5, a first spring 9 is slidably connected to the surface of the slide rod 6, the left and right ends of the first spring 9 are respectively fixedly connected to the inner wall of the slide groove 5 and the surface of the slide plate 7, and the surface of the slide plate 7 is fixedly connected to an adjusting spring 9. Plate 8, there are two adjustment plates 8, the structures on the two adjustment plates 8 are the same, the inner sides of the two adjustment plates 8 are inclined, and when they are used through the first sealing mechanism 1 and the second sealing mechanism 2, when it is necessary to flush lubricating oil to the connection between the first sealing mechanism 1 and the second sealing mechanism 2 through the gas filling valve 4, the operator only needs to control the connecting head of the refueling mechanism to enter the inner side of the two adjustment plates 8, and squeeze the inclined shape of the inner side of the two adjustment plates 8 through the connecting head, so that the two adjustment plates 8 move back to back on the surface of the protective ring 3, and then the connecting head and the gas filling valve 4 are connected and used. This method ensures the convenience of operation when the connecting head and the gas filling valve 4 are connected, and reduces the tediousness of manual intervention to open the adjustment plate 8.

[0033] Furthermore, after refueling is completed through the connecting head and the gas filling valve 4, when the connecting head and the gas filling valve 4 are separated, the two adjustment plates 8 have no extrusion pressure at this time, and the two adjustment plates 8 are reset by the elastic performance of the two first springs 9. At this time, the two adjustment plates 8 form a relative reset and closed effect. This method ensures that the gas filling valve 4 can be quickly protected in all directions by the adjusting plates 8 and the protective ring 3 after use, and thus guarantees the protective performance of the gas filling valve 4 to a certain extent, thereby ensuring the service life of the gas filling valve 4, and preventing the disadvantage of external impurities causing adsorption and blockage of the gas filling valve 4.

[0034] Further, a docking ring 10 is slidably connected to the inner side of the first sealing mechanism 1, a rubber pad 11 is provided on the inner side of the first sealing mechanism 1, and the surface of the rubber pad 11 is provided on the lower side of the docking ring 10. An inner groove 12 is provided inside the first sealing mechanism 1, and a fixing device is provided on the inner wall of the inner groove 12. The fixing device includes an inner block 13, and the surface of the inner block 13 is slidably connected to the inner wall of the inner groove 12. A second spring 14 is fixedly connected to the right side of the inner block 13, and the right end of the second spring 14 is fixedly connected to the inner wall of the inner groove 12. A slot 15 is provided on the surface of the docking ring 10, and the shapes of the inner block 13 and the slot 15 are both triangular. The surface of the inner block 13 is slidably connected to the inner wall of the slot 15, and a fixing column 16 is slidably connected to the inside of the docking ring 10. The lower end of the fixed column 16 is slidably connected to the inner wall of the inner block 13, and the surface of the fixed column 16 is slidably sleeved with a third spring 17. The upper and lower ends of the third spring 17 are respectively fixedly connected to the inner wall of the docking ring 10 and the surface of the fixed column 16. The upper end of the fixed column 16 is fixedly connected to a handle 18. An auxiliary groove 19 is provided on the outer side of the docking ring 10. After the operator separates the docking ring 10 from the first sealing mechanism 1, since the inner radius of the docking ring 10 is greater than the maximum radius of the second sealing mechanism 2, the docking ring 10 is separated from the first sealing mechanism 1 through the second sealing mechanism 2. When the rubber pad 11 passes through the upper end of the second sealing mechanism 2 through its own elastic effect, it is sleeved on the surface of the second sealing mechanism 2 until it contacts the first sealing mechanism 1. At this time, when the docking ring 10 is docked on the inner side of the first sealing mechanism 1, the operator controls the fixed column 16 to rise on the inner side of the docking ring 10, and the docking ring 10 enters the inner wall of the inner groove 12 by squeezing the inner block 13, until the lower side of the docking ring 10 is squeezed with the rubber pad 11, and the inner block 13 and the card slot 15 are matched with each other, the inner block 13 enters the inner wall of the card slot 15 through the elastic performance of the second spring 14, and the triangular shape of the inner block 13 and the card slot 15 ensures that the docking ring 10 has a good sliding effect when docking with the first sealing mechanism 1, thereby ensuring the sensitivity of the inner block 13 to slide in and out of the inner wall of the card slot 15. At this time, the operator releases the fixed column 16, and the fixed column 16 is elastically held by the third spring 17. Under the present invention, the fixing column 16 enters the groove inside the inner block 13, thereby forming a fixation between the first sealing mechanism 1 and the docking ring 10. In summary, the rubber pad 11 realizes sealing at the connection between the first sealing mechanism 1 and the second sealing mechanism 2, thereby reducing the disadvantage of lubricating oil leakage. Through the simple operation docking between the docking ring 10 and the first sealing mechanism 1, the simplicity of replacing the rubber pad 11 of the device is guaranteed, and when the rubber pad 11 is corroded by seawater after being used for a period of time and fails to achieve good anti-leakage performance, the docking ring 10 can be easily separated from the first sealing mechanism 1 and the rubber pad 11 can be replaced, thereby improving the simplicity of replacing the rubber pad 11 between the first sealing mechanism 1 and the second sealing mechanism 2.

[0035] Furthermore, when the operator controls the docking ring 10 to separate from the first sealing mechanism 1, the operator only needs to control the docking ring 10 through the auxiliary groove 19, and use the thumb of the operator's hand to lift the fixed column 16 inside the docking ring 10 through the handle 18, thereby separating the docking ring 10 from the first sealing mechanism 1. This method can conveniently operate and control the docking ring 10, ensuring the convenience of the operator's control and adjustment of the docking ring 10.

[0036] Furthermore, a sealing groove 20 is provided on the upper side of the first sealing mechanism 1, and a sealing ring 21 is slidably connected to the inner wall of the sealing groove 20, and the upper side of the sealing ring 21 is fixedly connected to the lower side of the docking ring 10. When the sealing rubber pad 11 is docked with the first sealing mechanism 1 through the docking ring 10, the sealing effect of the docking between the sealing ring 21 and the first sealing mechanism 1 can be effectively increased through the sealing ring 21 and the sealing groove 20 between the first sealing mechanism 1 and the docking ring 10, thereby reducing the rate at which seawater passes through the first sealing mechanism 1 and the docking ring 10 to cause corrosion to the internal fixed structure, thereby ensuring a good fixed use effect between the docking ring 10 and the first sealing mechanism 1.

[0037] Working principle: The two-way anti-leakage and extended durability recyclable tail shaft front sealing device, when used through the first sealing mechanism 1 and the second sealing mechanism 2, when it is necessary to flush lubricating oil to the connection between the first sealing mechanism 1 and the second sealing mechanism 2 through the air filling valve 4, the operator only needs to control the connecting head of the oiling mechanism to enter the inner side of the two adjustment plates 8, and squeeze the inclined shape of the inner side of the two adjustment plates 8 through the connecting head, so that the two adjustment plates 8 move away from each other on the surface of the protective ring 3, and then the connecting head and the air filling valve 4 are docked for use.

[0038] After the operator separates the docking ring 10 from the first sealing mechanism 1, since the inner radius of the docking ring 10 is larger than the maximum radius of the second sealing mechanism 2, the docking ring 10 is separated from the first sealing mechanism 1 through the second sealing mechanism 2. When the rubber pad 11 passes through the upper end of the second sealing mechanism 2 through its own elastic effect and is sleeved on the surface of the second sealing mechanism 2 until it contacts the first sealing mechanism 1, when the docking ring 10 is docked on the inner side of the first sealing mechanism 1, the operator controls the fixing column 16 to rise on the inner side of the docking ring 10, and the docking ring 10 enters the inner wall of the inner groove 12 by squeezing the inner block 13 until the docking is completed. The lower side of the ring 10 is squeezed with the rubber pad 11, and when the inner block 13 and the slot 15 are matched with each other, the inner block 13 enters the inner wall of the slot 15 through the elastic performance of the second spring 14. The triangular shape of the inner block 13 and the slot 15 ensures that the docking ring 10 has a good sliding effect when docking with the first sealing mechanism 1, thereby ensuring the sensitivity of the inner block 13 to slide in and out of the inner wall of the slot 15. At this time, the operator releases the fixing column 16, and the fixing column 16 enters the groove inside the inner block 13 under the elasticity of the third spring 17, thereby forming a fixation between the first sealing mechanism 1 and the docking ring 10.

[0039] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A bidirectional anti-leakage and extended-life cyclic tail shaft front sealing device comprises a first sealing mechanism (1), characterized in that: A second sealing mechanism (2) is arranged on the inner side of the first sealing mechanism (1); a protective ring (3) is fixedly connected to the surface of the first sealing mechanism (1); a gas filling valve (4) is fixedly connected to the surface of the first sealing mechanism (1); the gas filling valve (4) is located on the inner side of the protective ring (3); a docking ring (10) is slidably connected to the inner side of the first sealing mechanism (1); a rubber pad (11) is arranged on the inner side of the first sealing mechanism (1); the surface of the rubber pad (11) is arranged on the lower side of the docking ring (10); an inner groove (12) is provided inside the first sealing mechanism (1); and a fixing device is arranged on the inner wall of the inner groove (12); A slide groove (5) is provided on the surface of the protective ring (3), a slide rod (6) is fixedly connected to the slide groove (5), a slide plate (7) is slidably connected to the surface of the slide rod (6), and a surface of the slide plate (7) is slidably connected to the inner wall of the slide groove (5); The surface of the slide bar (6) is slidably connected to a first spring (9), the left and right ends of the first spring (9) are respectively fixedly connected to the inner wall of the slide groove (5) and the surface of the slide plate (7), and the surface of the slide plate (7) is fixedly connected to an adjustment plate (8); There are two adjustment plates (8), the structures on the two adjustment plates (8) are the same, and the inner sides of the two adjustment plates (8) are inclined; The fixing device comprises an inner block (13), the surface of the inner block (13) is slidably connected to the inner wall of the inner groove (12), a second spring (14) is fixedly connected to the right side of the inner block (13), the right end of the second spring (14) is fixedly connected to the inner wall of the inner groove (12), a clamping groove (15) is provided on the surface of the docking ring (10), a fixing column (16) is slidably connected inside the docking ring (10), the lower end of the fixing column (16) is slidably connected to the inner wall of the inner block (13), a third spring (17) is slidably sleeved on the surface of the fixing column (16), and the upper and lower ends of the third spring (17) are respectively fixedly connected to the inner wall of the docking ring (10) and the surface of the fixing column (16); The shapes of the inner block (13) and the slot (15) are both triangular, and the surface of the inner block (13) is slidably connected to the inner wall of the slot (15); The upper end of the fixed column (16) is fixedly connected with a handle (18), and the outer side of the docking ring (10) is provided with an auxiliary groove (19).

2. The bidirectional anti-leakage, extended-life, recyclable tail shaft front sealing device according to claim 1, characterized in that: A sealing groove (20) is provided on the upper side of the first sealing mechanism (1), a sealing ring (21) is slidably connected to the inner wall of the sealing groove (20), and the upper side of the sealing ring (21) is fixedly connected to the lower side of the docking ring (10).

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