Marine air compressor

Abstract

The present invention relates to the technical field of air compressors, specifically to a marine air compressor, including an air storage tank body, the upper end of which is detachably mounted with a full copper motor and a main engine unit, the main engine unit comprising a fixed square plate, a crankcase, a piston cylinder body and a boost cylinder body, the fixed square plate being fixedly mounted on the upper surface of the crankcase by bolts. The piston cylinder body provides a channel for the piston movement of the piston, the oil storage connection mechanism is optimized by design, the oil storage assembly and the locking assembly are used to realize the sleeve installation of the storage ring plate on the outside of the piston cylinder body, the sealed storage of the lubricating oil stored in the oil storage cavity is ensured, and the elastic extrusion assembly is used to extrude the oil storage assembly, so as to realize the proper lubrication of the piston and the piston cylinder body cavity, avoid the increase of the friction coefficient and contact stress between the inner wall of the piston cylinder body, thereby reducing the generation of heat, narrowing the restricted range of the air compressor, and extending the overall service life.

Description

Technical Field

[0001] The invention relates to the technical field of air compressors, in particular to a marine air compressor. Background Art

[0002] Marine air compressors are widely used in shipbuilding, petrochemical, steel manufacturing, mining, infrastructure construction and other fields. On ships, they are mainly used to provide compressed air as a power source to support the operation and maintenance of various equipment. Most marine air compressors use the principle of piston compressors, which compress the air into a high-pressure state through reciprocating motion, and then transport it through pipelines to equipment and tools that need air.

[0003] In the prior art, there is a piston air compressor with a publication number of CN111120254A. It consists of a driving assembly and an air compression assembly connected to the driving assembly. A motor end cover is provided at the front end of the driving assembly, a pump body rear cover is provided at the rear end of the air compression assembly, and an integrated air compressor housing is provided between the motor end cover and the pump body rear cover; the driving assembly includes a motor and a motor main shaft, a boss connected to the air compression assembly is provided on the motor main shaft, and a rolling bearing is provided on the boss; the air compression assembly includes a plurality of piston units, the piston units include a cylinder, a piston reciprocating in the cylinder, a connecting rod connected to the piston and controlling the movement of the piston, the connecting rod is sleeved on the rolling bearing on the boss, and the connecting rod corresponds to the rolling bearing on the boss. This makes the air compressor run more smoothly, with lower noise and safer to use.

[0004] However, in actual use, the existing piston air compressor is large in size, has a relatively complex internal structure, and contains multiple vulnerable parts, such as pistons, cylinders, air valves, etc. These parts are prone to wear during long-term use, increasing the thermal and mechanical loads on the piston cylinder body, thus shortening the service life of the air compressor.

[0005] Therefore, the present invention proposes a marine air compressor to solve the problem that the existing air compressor is limited in operation during use, causing mechanical wear and thus affecting the overall service life. Summary of the invention

[0006] In view of the shortcomings of the prior art, the object of the present invention is to provide a marine air compressor to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a marine air compressor, comprising an air storage tank body, the upper end of which is detachably mounted with an all-copper motor and a main engine unit, the main engine unit comprising a fixed square plate, a crankcase, a piston cylinder body and a booster cylinder body, the fixed square plate is fixedly mounted on the upper surface of the crankcase by bolts, an oil storage connection mechanism is movably mounted on the outside of the piston cylinder body, the oil storage connection mechanism comprises a limited position locking block and an elastic extrusion assembly, a transmission pulley group is fixedly mounted on the output shaft of the all-copper motor, the output end of the transmission pulley group is fixedly connected to a rotating shaft, a crankshaft is fixedly mounted on the outer surface of the rotating shaft, and the A connecting rod is rotatably installed on the crankshaft, and a piston is fixedly installed on the upper end of the connecting rod. The outer surface of the piston is movably connected to the inner surface of the piston cylinder body, and a storage ring plate is movably sleeved on the outer surface of the piston cylinder body. The storage ring plate is movably sleeved on the outside of the piston cylinder body, and an oil storage cavity is provided between the inner side of the storage ring plate and the outer side of the piston cylinder body, and an oil storage assembly is provided on the inner side of the oil storage cavity. A connecting sleeve plate is fixedly installed on the outer surface of the upper side of the storage ring plate, and the outer ring surface of the connecting sleeve plate is connected to the elastic extrusion assembly. A locking assembly is fixedly installed on the upper surface of the connecting sleeve plate, and the locking assembly includes a mounting plate, a locking column and a locking rotating block.

[0008] Preferably, the oil storage assembly includes an annular elastic airbag, which is fixedly installed in the inner cavity of the oil storage cavity, a rubber sealing block is provided on the bottom surface of the inner cavity of the oil storage cavity, an inner ring surface of the annular elastic airbag is provided with an oil-absorbing cotton ring, a connecting block is fixedly installed on the inner ring surface of the oil-absorbing cotton ring, and the other end of the connecting block is fixedly connected to an oil seepage plate.

[0009] Preferably, a fixing bar is fixedly installed on the oil seepage plate, and the fixing bars are provided in multiple groups and are arranged in an array about the central axis of the oil seepage plate, and oil seepage slots are opened between two groups of the fixing bars. The oil seepage plate has a hollow circular ring structure, and a lubrication component is provided on the inner side of the oil seepage plate.

[0010] Preferably, the lubrication component is arranged on the inner wall of the piston cylinder, a ball mounting hole is opened on the inner wall of the piston cylinder, and the lubrication component includes a ball, and the outer surface of the ball is rotatably connected to the inner wall of the ball.

[0011] Preferably, the elastic extrusion assembly includes a sleeve ring plate, a mounting groove plate and an extrusion block, the inner ring surface of the extrusion block is movably abutted against the outer surface of the annular elastic airbag, the outer surface of the extrusion block is fixedly mounted with a movable block, and the outer surface of the movable block is slidably connected to the inner wall of the storage ring plate.

[0012] Preferably, a return spring is fixedly installed on the outer surface of the movable block, the other end of the return spring is fixedly connected to a pressing arm, the upper outer surface of the pressing arm is rotatably connected to the inner surface of the mounting groove plate, and the mounting groove plate is fixedly installed on the outer surface of the socket ring plate.

[0013] Preferably, a mounting groove is formed on the upper ring surface of the socket ring plate, the inner surface of the mounting groove is fixedly connected to the lower surface of the mounting plate, and the upper end of the mounting plate is fixedly connected to the lower surface of the locking column.

[0014] Preferably, the limit lock block is fixedly installed on the outer surface of the piston cylinder block, an embedding groove is formed on the lower inner wall of the limit lock block, the embedding groove is in a "C"-shaped empty groove structure, a circular groove is formed at the upper end of the embedding groove, and the inner surface of the embedding groove is movably embedded with the upper outer surface of the mounting plate.

[0015] Preferably, a receiving groove is formed on the upper inner wall of the locking column, an elastic block is fixedly installed on the inner surface of the receiving groove, the elastic block is in an "X"-shaped plate structure, a compensation block is fixedly installed on the outer surface of the elastic block, and the outer surface of the compensation block is movably abutted against the inner surface of the receiving groove.

[0016] Preferably, a thread is formed on the outer surface of the compensation block, the outer surface of the thread is threadedly connected to the inner surface of the locking rotating block, and the inner surface of the locking rotating block is threadedly connected to the outer surface of the top end of the locking column.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] A marine air compressor proposed by the present invention provides a channel for the piston movement of the piston through the piston cylinder block. Through the optimized design of the oil storage connection mechanism, the storage ring plate is sleeved and installed outside the piston cylinder block by using the oil storage component and the locking component, ensuring the sealed storage of the lubricating oil in the inner cavity of the oil storage cavity. Cooperating with the elastic extrusion component to extrude the oil storage component, so as to realize the appropriate lubrication in the piston and the piston cylinder block cavity, avoid the increase of the friction coefficient and contact stress between the piston and the inner wall of the piston cylinder block, thereby reducing the generation of heat, narrowing the limited range of use of the air compressor, and prolonging the overall service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front structural schematic diagram of the present invention.

[0020] Figure 2 It is a back structural schematic diagram of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the main engine unit of the present invention.

[0022] Figure 4It is a schematic diagram of the cross-sectional structure of the connection between the piston cylinder and the piston of the present invention.

[0023] Figure 5 It is a schematic diagram of the exploded structure of the piston cylinder and the storage ring plate of the present invention.

[0024] Figure 6 It is a schematic diagram of the partial cross-sectional structure of the piston cylinder body of the present invention.

[0025] Figure 7 For the present invention Figure 6 A is an enlarged structural diagram of FIG.

[0026] Figure 8 It is a schematic diagram of the half-section connection structure of the storage ring plate and the elastic extrusion assembly of the present invention.

[0027] Fig. 9 It is a schematic diagram of the connection structure between the storage ring plate and the oil seepage plate of the present invention.

[0028] Fig.10 It is a schematic diagram of the cross-sectional structure of the connection between the storage ring plate and the annular elastic airbag of the present invention.

[0029] Fig.11 It is a schematic diagram of the connection structure between the oil seepage plate and the oil absorption cotton ring of the present invention.

[0030] Fig.12 For the present invention Fig.11 Schematic diagram of the enlarged structure at B.

[0031] Fig.13 It is a schematic structural diagram of the locking state of the limiting locking block and the mounting plate of the present invention.

[0032] Fig.14 For the present invention Fig.13 Enlarged structural diagram at C.

[0033] In the figure: 1, gas tank body; 2, all-copper motor; 3, driving pulley assembly; 31, crankshaft; 32, connecting rod; 33, piston; 4, main engine unit; 40, fixed square plate; 41, crankcase; 42, piston cylinder; 420, ball mounting hole; 421, ball; 43, booster cylinder; 5, limit lock block; 50, embedded groove; 501, circular groove; 6, storage ring plate; 60, oil storage cavity; 601, rubber seal block; 61, connecting rod Connecting plate; 8, sleeve ring plate; 81, mounting groove plate; 82, extrusion arm; 83, reset spring; 84, movable block; 85, extrusion block; 9, annular elastic airbag; 10, oil-absorbing cotton ring; 101, connecting block; 11, oil seepage plate; 110, oil seepage slot hole; 111, fixing strip; 7, locking assembly; 71, mounting plate; 72, locking column; 720, receiving groove; 721, elastic block; 722, compensation block; 73, locking rotating block. DETAILED DESCRIPTION

[0034] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] For example, see Figure 1-14 The present invention provides a technical solution: a marine air compressor, comprising an air storage tank body 1, an all-copper motor 2 and a main engine unit 4 are detachably mounted on the upper end of the air storage tank body 1, the main engine unit 4 comprises a fixed square plate 40, a crankcase 41, a piston cylinder 42 and a boost cylinder 43, the fixed square plate 40 is fixedly mounted on the upper surface of the crankcase 41 by bolts, an oil storage connection mechanism is movably mounted on the outside of the piston cylinder 42, the oil storage connection mechanism comprises a limited position locking block 5 and an elastic extrusion component, a transmission pulley group 3 is fixedly mounted on the output shaft of the all-copper motor 2, a rotating shaft is fixedly connected to the output end of the transmission pulley group 3, a crankshaft 31 is fixedly mounted on the outer surface of the rotating shaft, a connecting rod 32 is rotatably mounted on the crankshaft 31, a piston 33 is fixedly mounted on the upper end of the connecting rod 32, the outer surface of the piston 33 is movably connected to the inner surface of the piston cylinder 42, a storage ring plate 6 is movably sleeved on the outer surface of the piston cylinder 42, the storage ring plate 6 is movably sleeved on the outside of the piston cylinder 42, An oil storage chamber 60 is provided between the inner side and the outer side of the piston cylinder body 42, an oil storage assembly is provided on the inner side of the oil storage chamber 60, a connecting sleeve plate 61 is fixedly installed on the upper outer surface of the storage ring plate 6, the outer ring surface of the connecting sleeve plate 61 is connected to the elastic extrusion assembly, and a locking assembly 7 is fixedly installed on the upper surface of the connecting sleeve plate 61, and the locking assembly 7 includes a mounting plate 71, a locking column 72 and a locking turn block 73; a channel is provided for the piston movement of the piston 33 through the piston cylinder body 42, and the oil storage assembly and the locking assembly 7 are used to realize the sleeve installation of the storage ring plate 6 on the outside of the piston cylinder body 42 through the optimized design of the oil storage connection mechanism, to ensure the sealed storage of the lubricating oil stored in the inner cavity of the oil storage chamber 60, and to cooperate with the elastic extrusion assembly to extrude the oil storage assembly, so as to realize the proper lubrication in the cavity of the piston 33 and the piston cylinder body 42, avoid the increase of the friction coefficient and contact stress between the inner wall of the piston cylinder body 42, thereby reducing the generation of heat, narrowing the restricted range of the use of the air compressor, and extending the overall service life.

[0036] Embodiment 2, refer to the attached Figure 1-14 On the basis of the first embodiment, in order to achieve proper lubrication between the inner cavities of the piston cylinder 42, to facilitate regular maintenance and to avoid the situation where the range of motion of the piston 33 is limited:

[0037] The oil storage component includes an annular elastic airbag 9, which is fixedly installed in the inner cavity of the oil storage cavity 60, and a rubber sealing block 601 is arranged on the bottom surface of the inner cavity of the oil storage cavity 60. An oil-absorbing cotton ring 10 is arranged on the inner ring surface of the annular elastic airbag 9, and a connecting block 101 is fixedly installed on the inner ring surface of the oil-absorbing cotton ring 10, and the other end of the connecting block 101 is fixedly connected to an oil seepage plate 11; a fixing bar 111 is fixedly installed on the oil seepage plate 11, and the fixing bar 111 is provided with multiple groups and arranged in an array about the central axis of the oil seepage plate 11, and an oil seepage slot hole 110 is opened between two groups of fixing bars 111, and the oil seepage plate 11 is a hollow ring structure, and a lubrication component is arranged on the inner side of the oil seepage plate 11; the lubrication component is arranged on the inner wall of the piston cylinder 42, and a ball mounting hole 420 is opened on the inner wall of the piston cylinder 42, and the lubrication component includes a ball 421, and the outer surface of the ball 421 is rotatably connected to the inner wall of the ball 421;

[0038] The inner cavity of the piston cylinder 42 is provided with evenly distributed ball mounting holes 420 for mounting the balls 421. When the piston 33 moves, the surface of the balls 421 rolls with the outside of the piston 33, so that the movement of the piston 33 is not hindered and the oiling operation of the piston 33 is realized. Figure 6 and Figure 7 As shown, a storage ring plate 6 is sleeved and installed on the outer ring surface of the piston cylinder body 42, and the oil-absorbing cotton ring 10 in the inner cavity of the oil storage chamber 60 is used to absorb and store lubricating oil. The oil-absorbing cotton ring 10 is supported by a connecting block 101, and an annular elastic airbag 9 is used as a driving member for the lubricating oil to ensure that the lubricating oil seeps out through the oil seepage grooves 110 between the oil seepage plates 11, so that it is convenient for the lubricating oil to contact the rolling ball 421, thereby realizing automatic oiling of the piston cylinder body 42, reducing the wear of the piston 33 during operation, and avoiding movement restriction. The reason why a rubber sealing block 601 is added to the bottom surface of the inner cavity of the oil storage chamber 60 is to ensure that the lubricating oil is poured into the inside of the oil storage chamber 60, and a needle can be inserted into the rubber sealing block 601 to inject lubricating oil into it.

[0039] Embodiment 3, refer to the attached Figure 1-14 On the basis of the second embodiment, in order to realize the extrusion of the lubricating oil inside the oil storage cavity 60:

[0040] The elastic extrusion assembly includes a socket ring plate 8, a mounting groove plate 81 and an extrusion block 85. The inner ring surface of the extrusion block 85 is in movable abutment with the outer surface of the annular elastic airbag 9. An activity block 84 is fixedly installed on the outer surface of the extrusion block 85, and the outer surface of the activity block 84 is slidably connected to the inner wall of the storage ring plate 6; A return spring 83 is fixedly installed on the outer surface of the activity block 84. The other end of the return spring 83 is fixedly connected to an extrusion arm 82. The upper outer surface of the extrusion arm 82 is rotatably connected to the inner surface of the mounting groove plate 81. The mounting groove plate 81 is fixedly installed on the outer surface of the socket ring plate 8;

[0041] After injecting an appropriate amount of lubricating oil into the oil storage cavity 60 and when it is necessary to supplement the lubricating oil in the inner cavity of the piston cylinder block 42, rotate the extrusion arm 82 installed inside the mounting groove plate 81. The inner side of the extrusion arm 82 is connected to the return spring 83, and the other end of the return spring 83 is connected to the outside of the activity block 84. Place the hand in contact with the outer curved surface position of the extrusion arm 82 and press inward forcefully. During the pressing process, the return spring 83 is elastically compressed under the influence of an external force, and drives the activity block 84 and the extrusion block 85 to move inward. Subsequently, the extrusion block 85 pushes against the annular elastic airbag 9 on the inner side. At this time, the annular elastic airbag 9 undergoes elastic deformation. In this way, the deformed annular elastic airbag 9 squeezes the oil-absorbing cotton ring 10, and the lubricating oil locked and stored on the oil-absorbing cotton ring 10 is extruded, and then seeps out through the uniformly distributed oil seepage holes 110 on the oil seepage plate 11.

[0042] Example 4, referring to the attached Figure 1-14 , on the basis of Example 3, in order to achieve further locking connection after the storage ring plate 6 is assembled and connected:

[0043] An installation groove is formed on the upper ring surface of the socket ring plate 8. The inner surface of the installation groove is fixedly connected to the lower surface of the installation plate 71. The upper end of the installation plate 71 is fixedly connected to the lower surface of the locking column 72; The limit lock block 5 is fixedly installed on the outer surface of the piston cylinder block 42. An embedding groove 50 is formed on the lower inner wall of the limit lock block 5. The embedding groove 50 is a "C"-shaped empty groove structure. A circular groove 501 is formed at the upper end of the embedding groove 50. The inner surface of the embedding groove 50 is movably embedded with the upper outer surface of the installation plate 71; A receiving groove 720 is formed on the upper inner wall of the locking column 72. An elastic block 721 is fixedly installed on the inner surface of the receiving groove 720. The elastic block 721 is an "X"-shaped plate structure. A compensation block 722 is fixedly installed on the outer surface of the elastic block 721. The outer surface of the compensation block 722 is in movable abutment with the inner surface of the receiving groove 720; A thread is formed on the outer surface of the compensation block 722. The inner surface of the thread is threadedly connected to the inner surface of the locking rotating block 73. The inner surface of the locking rotating block 73 is threadedly connected to the top outer surface of the locking column 72;

[0044] When the storage ring plate 6 is grasped and pushed upward, the mounting plate 71 connected to the upper side of the connecting sleeve plate 61 is simultaneously moved upward. During the assembly process, the mounting plate 71 is initially embedded in the embedding groove 50 to define the initial position. Subsequently, the locking column 72 penetrates into the circular groove 501. It should be noted that at this time, the compensation block 722 is accommodated in the inner side of the accommodation groove 720 through the locking rotating block 73. When the locking rotating block 73 and the locking column 72 are completely extended out of the circular groove 501, the locking rotating block 73 is manually rotated to disengage the compensation block 722 from the locking rotating block 73. Subsequently, the compensation block 722 is pushed to move outward under the elastic storage force of the elastic block 721, thereby realizing the assembly locking between the compensation block 722 and the limit lock block 5 to avoid loosening.

[0045] The working principle and use process of the present invention are as follows: in actual operation, first, evenly distributed ball mounting holes 420 are opened in the inner cavity of the piston cylinder body 42 for mounting the ball 421. During the piston movement of the piston 33, the surface of the ball 421 rolls with the outside of the piston 33, which will not hinder the movement of the piston 33 and realize the oiling operation of the piston 33; the storage ring plate 6 is sleeved and installed on the outer ring surface of the piston cylinder body 42, and the oil-absorbing cotton ring 10 in the inner cavity of the oil storage cavity 60 is used for absorbing and storing lubricating oil. The oil-absorbing cotton ring 10 is supported by the connecting block 101, and the annular elastic airbag is used. 9 is used as a pusher for lubricating oil to ensure that the lubricating oil seeps out through the oil seepage slots 110 between the oil seepage plates 11, so that the lubricating oil is easy to contact with the rolling ball 421, and the piston cylinder 42 is automatically lubricated. After injecting a proper amount of lubricating oil into the oil storage chamber 60, and when it is necessary to replenish the lubricating oil in the inner cavity of the piston cylinder 42, the inner side of the squeezing arm 82 installed on the inner side of the mounting slot plate 81 is connected to the return spring 83, and the other end of the return spring 83 is connected to the outside of the movable block 84, and the hand contacts the outer curved surface of the squeezing arm 82 and presses inward with force. During the pressing process, the return spring 83 is reset. The spring 83 is elastically compressed by the external force, and drives the movable block 84 and the extrusion block 85 to move inward, and then the extrusion block 85 pushes the inner annular elastic airbag 9. At this time, the annular elastic airbag 9 is elastically deformed, so that the deformed annular elastic airbag 9 is squeezed toward the oil-absorbing cotton ring 10, and the lubricating oil locked and stored on the oil-absorbing cotton ring 10 is squeezed out, and then seeps out through the oil seepage grooves 110 evenly distributed on the oil seepage plate 11. When the storage ring plate 6 is grasped and pushed upward, the mounting plate 71 connected to the upper side of the connecting sleeve plate 61 is synchronously moved upward. During the assembly process, the mounting plate 7 1 is initially embedded in the embedding groove 50 to achieve the initial position limitation. Subsequently, the locking column 72 extends into the circular groove 501. It should be noted that at this time, the compensation block 722 is received in the inner side of the receiving groove 720 through the locking rotating block 73. When the locking rotating block 73 and the locking column 72 are completely extended out of the circular groove 501, the locking rotating block 73 is manually screwed to disengage the compensation block 722 from the locking rotating block 73. Subsequently, the compensation block 722 is pushed to move outward respectively under the elastic storage force of the elastic block 721, so as to achieve the assembly locking between the compensation block 722 and the limit lock block 5.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A marine air compressor, comprising an air storage tank (1), characterized in that: The upper end of the gas storage tank body (1) is detachably mounted with a full copper motor (2) and a main engine unit (4), the main engine unit (4) comprising a fixed square plate (40), a crankcase (41), a piston cylinder (42) and a boost cylinder (43), the fixed square plate (40) being fixedly mounted on the upper surface of the crankcase (41) by bolts, an oil storage connection mechanism being movably mounted on the outside of the piston cylinder (42), the oil storage connection mechanism comprising a limited position locking block (5) and an elastic extrusion assembly, a transmission pulley group (3) being fixedly mounted on the output shaft of the full copper motor (2), the output end of the transmission pulley group (3) being fixedly connected to a rotating shaft, a crankshaft (31) being fixedly mounted on the outer surface of the rotating shaft, a connecting rod (32) being rotatably mounted on the crankshaft (31), the upper end of the connecting rod (32) A piston (33) is fixedly mounted, the outer surface of the piston (33) is movably connected to the inner surface of the piston cylinder (42), the outer surface of the piston cylinder (42) is movably sleeved with a storage ring plate (6), the storage ring plate (6) is movably sleeved on the outside of the piston cylinder (42), an oil storage chamber (60) is arranged between the inner side of the storage ring plate (6) and the outer side of the piston cylinder (42), an oil storage assembly is arranged on the inner side of the oil storage chamber (60), a connecting sleeve plate (61) is fixedly mounted on the upper outer surface of the storage ring plate (6), the outer ring surface of the connecting sleeve plate (61) is connected to the elastic extrusion assembly, a locking assembly (7) is fixedly mounted on the upper surface of the connecting sleeve plate (61), and the locking assembly (7) comprises a mounting plate (71), a locking column (72) and a locking rotating block (73).

2. A marine air compressor according to claim 1, characterized in that: The oil storage assembly comprises an annular elastic airbag (9), the annular elastic airbag (9) is fixedly mounted in the inner cavity of the oil storage cavity (60), a rubber sealing block (601) is arranged on the inner cavity bottom surface of the oil storage cavity (60), an oil-absorbing cotton ring (10) is arranged on the inner ring surface of the annular elastic airbag (9), a connecting block (101) is fixedly mounted on the inner ring surface of the oil-absorbing cotton ring (10), and the other end of the connecting block (101) is fixedly connected to an oil seepage plate (11).

3. A marine air compressor according to claim 2, characterized in that: A fixing bar (111) is fixedly mounted on the oil seepage plate (11); the fixing bars (111) are provided in a plurality of groups and are arranged in an array about the central axis of the oil seepage plate (11); an oil seepage slot hole (110) is provided between two groups of the fixing bars (111); the oil seepage plate (11) is a hollow annular structure; and a lubrication component is provided on the inner side of the oil seepage plate (11).

4. A marine air compressor according to claim 3, characterized in that: The lubrication component is arranged on the inner wall of the piston cylinder (42), a ball mounting hole (420) is opened on the inner wall of the piston cylinder (42), and the lubrication component includes a ball (421), and the outer surface of the ball (421) is rotatably connected to the inner wall of the ball (421).

5. A marine air compressor according to claim 1, characterized in that: The elastic extrusion assembly comprises a sleeve ring plate (8), a mounting groove plate (81) and an extrusion block (85); the inner ring surface of the extrusion block (85) is movably abutted against the outer surface of the annular elastic airbag (9); a movable block (84) is fixedly mounted on the outer surface of the extrusion block (85); and the outer surface of the movable block (84) is slidably connected to the inner wall of the storage ring plate (6).

6. A marine air compressor according to claim 5, characterized in that: A return spring (83) is fixedly mounted on the outer surface of the movable block (84); the other end of the return spring (83) is fixedly connected to a pressing arm (82); the upper end outer surface of the pressing arm (82) is rotatably connected to the inner surface of the mounting groove plate (81); and the mounting groove plate (81) is fixedly mounted on the outer surface of the sleeve ring plate (8).

7. A marine air compressor according to claim 5, characterized in that: The upper ring surface of the sleeve ring plate (8) is provided with a mounting groove, the inner surface of the mounting groove is fixedly connected to the lower surface of the mounting plate (71), and the upper end of the mounting plate (71) is fixedly connected to the lower surface of the locking column (72).

8. A marine air compressor according to claim 7, characterized in that: The limit lock block (5) is fixedly mounted on the outer surface of the piston cylinder body (42); an embedding groove (50) is provided on the lower inner wall of the limit lock block (5); the embedding groove (50) is in the form of a hollow groove; a circular groove (501) is provided at the upper end of the embedding groove (50); and the inner surface of the embedding groove (50) is movably embedded with the upper outer surface of the mounting plate (71).

9. A marine air compressor according to claim 7, characterized in that: A receiving groove (720) is provided on the inner wall of the upper end of the locking column (72); an elastic block (721) is fixedly mounted on the inner surface of the receiving groove (720); the elastic block (721) is in an "X"-shaped plate structure; a compensation block (722) is fixedly mounted on the outer surface of the elastic block (721); the outer surface of the compensation block (722) is movably abutted against the inner surface of the receiving groove (720).

10. A marine air compressor according to claim 9, characterized in that: The outer surface of the compensation block (722) is provided with a thread, the outer surface of the thread is threadedly connected to the inner surface of the locking rotating block (73), and the inner surface of the locking rotating block (73) is threadedly connected to the outer surface of the top end of the locking column (72).

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