Plunger direct pushing type propeller

Abstract

The utility model belongs to the field of power propulsion of ships and underwater vehicles, and discloses a plunger direct-push type propeller which comprises a plunger body, a piston body and a main shaft, the plunger body and the piston body are connected into a whole through the main shaft, the surface of the plunger body is sleeved with a plunger cylinder body matched with the plunger body, and the plunger cylinder body is connected with the main shaft. A water supplementing cylinder body integrally formed with the plunger cylinder body is arranged on the plunger cylinder body, the plunger cylinder body and the water supplementing cylinder body are two independent cylinder bodies respectively, the piston body is located in the water supplementing cylinder body, the main shaft penetrates through the water supplementing cylinder body and extends into the plunger cylinder body, and a water spraying one-way seat and a water spraying one-way valve plate are arranged in the plunger cylinder body. The water spraying one-way valve plate is arranged in a water spraying one-way seat, and a valve seat water inlet is formed in the water spraying one-way seat. According to the plunger direct pushing type propeller, the propelling efficiency can be improved, and winding of similar objects such as sea grass and ropes can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of power propulsion of ships and underwater submersibles, and more specifically, to a plunger direct-push propeller. Background Art

[0002] The propulsion mechanism of ships and underwater vehicles refers to the mechanism or device used to generate propulsion to drive the ship or underwater vehicle forward. These propulsion mechanisms can be various forms of mechanical devices designed to convert power into propulsion, thereby pushing the ship or underwater vehicle to sail along the water surface or underwater.

[0003] The propulsion mechanisms of ships and underwater vehicles usually vary according to their specific designs and uses. Among them, propeller thrusters are the most common propulsion devices, which propel the ship forward by rotating the propeller to generate propulsion force.

[0004] However, the propeller-type thruster cannot fully exert its thrust because the blades are at a certain angle to the direction of thrust, and the blades are easily entangled by seaweed and other objects when rotating. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a plunger direct-push propeller.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A plunger direct-push thruster, comprising a plunger body, a piston body and a main shaft, wherein the plunger body and the piston body are connected as a whole by the main shaft, the surface of the plunger body is sleeved with a plunger cylinder body adapted thereto, the surface of the plunger body is smooth, a water replenishment cylinder body integrally formed therewith is arranged on the plunger cylinder body, the plunger cylinder body and the water replenishment cylinder body are two independent cylinder bodies respectively, the piston body is located in the water replenishment cylinder body, the main shaft penetrates the water replenishment cylinder body and extends into the plunger cylinder body, a water spraying one-way seat and a water spraying one-way valve plate are arranged in the plunger body, the water spraying one-way valve plate is arranged in the water spraying one-way seat, and a valve seat water inlet is opened on the water spraying one-way seat;

[0008] The upper surface of the water replenishment cylinder body is provided with a water inlet one-way valve assembly connected thereto, the upper surface of the plunger cylinder body is provided with a plunger cylinder water replenishment one-way valve assembly, the lower surface of the water replenishment cylinder body is provided with a cylinder body water discharge one-way valve assembly connected thereto, and the surface of the plunger cylinder body is respectively provided with a connecting one-way valve assembly 1 and a connecting one-way valve assembly 2, the connecting one-way valve assembly 1 and the connecting one-way valve assembly 2 both connect the water replenishment cylinder body and the plunger cylinder body, the connecting one-way valve assembly 1 has an end connected to the water replenishment cylinder body close to the top of the water replenishment cylinder body, and the connecting one-way valve assembly 2 and an end connected to the water replenishment cylinder body are close to the bottom of the water replenishment cylinder body.

[0009] As a further description of the above technical solution: the top of the water replenishing cylinder body is connected to a flange, a sealing assembly is arranged on the flange, and the main shaft passes through the sealing assembly and extends into the water replenishing cylinder body.

[0010] As a further description of the above technical solution: a small water spray hole is drilled at the end of the water spray one-way valve plate, and a conical guide navel is provided in the middle of the end of the water spray one-way valve plate.

[0011] As a further description of the above technical solution: the sum of the equivalent throat diameters of the water inlet one-way valve assembly is greater than the sum of the equivalent throat diameters of the connecting one-way valve assembly.

[0012] As a further description of the above technical solution: the sum of the areas of all water spray outlets of the water spray one-way valve plate is smaller than the equivalent throat diameter of the water inlet one-way valve assembly.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] The plunger direct-push propeller of the present invention can not only improve the propulsion efficiency, but also avoid entanglement with seaweed, ropes and the like.

[0015] This scheme adopts a plunger-type propulsion structure, in which the reciprocating motion mechanism drives the main shaft of the propeller to do reciprocating motion. When the main shaft moves forward, the shaftless end face of the plunger body directly hits the water and generates thrust, and when the main shaft returns, the compressed water in the cylinder body is ejected from the shaftless end face of the plunger body and generates thrust. In this way, the direct thrust of the plunger body and the direct thrust of the water spray are superimposed. Since the movement direction of the submersible and the movement direction and thrust direction of the plunger body are in a straight line, no component force is generated, thereby greatly improving the thrust and the propulsion efficiency. Since the smooth moving surface of the plunger body is used, there will be no entanglement of seaweed and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Description of the numbers in the figure:

[0018] 1. Water inlet check valve assembly; 2. Water supply cylinder body; 3. Piston body; 4. Connecting check valve assembly 1; 5. Plunger cylinder body; 6. Plunger body; 7. Water spray check seat; 8. Water spray check valve plate; 81. Water spray hole; 82. Conical guide navel; 9. Valve seat water inlet; 10. Plunger cylinder water supply check valve assembly; 11. Connecting check valve assembly 2; 12. Cylinder body water discharge check valve assembly; 13. Main shaft; 14. Seal assembly. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0020] Example 1

[0021] See also Figure 1 A plunger direct-push thruster comprises a plunger body 6, a piston body 3 and a main shaft 13. The plunger body 6 and the piston body 3 are connected as a whole by the main shaft 13. The surface of the plunger body 6 is sleeved with a plunger cylinder body 5 adapted thereto. The plunger cylinder body 5 is provided with a water replenishment cylinder body 2 integrally formed therewith. The plunger cylinder body 5 and the water replenishment cylinder body 2 are two independent cylinder bodies respectively. The piston body 3 is located in the water replenishment cylinder body 2. The main shaft 13 penetrates the water replenishment cylinder body 2 and extends into the plunger cylinder body 5. A water spraying one-way seat 7 and a water spraying one-way valve plate 8 are provided in the plunger body 6. The water spraying one-way valve plate 8 is arranged in the water spraying one-way seat 7. A valve seat water inlet 9 is provided on the water spraying one-way seat 7. The water replenishment cylinder body 2 The upper surface is provided with a water inlet check valve assembly 1 connected thereto, the upper surface of the plunger cylinder body 5 is provided with a plunger cylinder water replenishment check valve assembly 10, the lower surface of the water replenishment cylinder body 2 is provided with a cylinder body water discharge check valve assembly 12 connected thereto, and the surface of the plunger cylinder body 5 is respectively provided with a connecting check valve assembly 1 4 and a connecting check valve assembly 2 11, the connecting check valve assembly 1 4 and the connecting check valve assembly 2 11 are both connected to the water replenishment cylinder body 2 and the plunger cylinder body 5, the connecting check valve assembly 1 4 is connected to the water replenishment cylinder body 2 at one end close to the top of the water replenishment cylinder body 2, and the connecting check valve assembly 2 11 is connected to the water replenishment cylinder body 2 at one end close to the bottom of the water replenishment cylinder body 2.

[0022] Among them, the top of the water replenishment cylinder body 2 is connected with a flange, and a sealing assembly 14 is arranged on the flange. The main shaft 13 passes through the sealing assembly 14 and extends into the water replenishment cylinder body 2. The pre-tightening force of the main shaft 13 and the sealing assembly 14 is moderate.

[0023] In this embodiment, the reciprocating motion mechanism drives the main shaft 13 to do reciprocating motion. When the main shaft 13 moves forward, the shaftless end face of the plunger body 6 directly hits the water and generates thrust, and when the main shaft 13 returns, compressed water is simultaneously sprayed out from the two cylinders to generate thrust, thus forming a thrust composed of the superposition of the direct thrust of the plunger body and the direct thrust of the water spray. Since the movement direction of the submersible and the movement direction and thrust direction of the plunger body 6 are in a straight line, no component force is generated, thereby greatly improving the thrust and the propulsion efficiency. Since the smooth moving surface of the plunger body 6 is used, no entanglement of seaweed and the like will occur.

[0024] The specific process is as follows:

[0025] The reciprocating mechanism drives the main shaft 13 to reciprocate. When the main shaft 13 rapidly moves into the cylinder body, the water inlet check valve assembly 1 opens, the plunger cylinder water replenishment check valve assembly 10 opens, and water rapidly enters the water replenishment cylinder body 2 and the plunger cylinder body 5. As the plunger body 6 rapidly moves, the non-axial end surface A (such as Figure 1 As shown) directly hits the water, generating an opposite force, which directly drives the submersible to move;

[0026] When the main shaft 13 returns outward, the water inlet check valve assembly 1 and the connecting check valve assembly 2 11 are closed, the plunger cylinder water supply check valve assembly 10 is closed, and the pressure in the water supply cylinder body 2 is greater than the pressure in the plunger cylinder body 5. Therefore, the compressed water in the water supply cylinder body 2 enters the plunger cylinder body 5 through the connecting check valve assembly 1 4, and the compressed water in the plunger cylinder body 5 is then ejected through the check valve chamber 7, which also pushes the submersible to move. This thruster is a thruster in which the direct push thrust of the plunger is superimposed with the direct push thrust of the water spray. Therefore, the propulsion efficiency is effectively improved.

[0027] This embodiment adopts a double cylinder structure, namely, a water replenishment cylinder 2 and a plunger cylinder 5, and its function is: when the main shaft 13 advances, the compressed water generated by the displacement of the piston body 3 in the water replenishment cylinder 2 flows into the plunger cylinder 5 through the connecting one-way valve assembly 11, and then sprays out through the water spray one-way seat 7 on the plunger body 6, and the theoretical volume V=π×(Φ / 2)2×S. When the main shaft returns, the sum of the volume of the compressed water displaced by the piston body 3 in the water replenishment cylinder 2 and the volume of the compressed water displaced by the plunger body 6 of the plunger cylinder 5 V=[π×(Φ / 2)2×S)]+[π×(Φ / 2)2×S)] is much larger than the volume of the compressed water on the end face (such as the return stroke) of the plunger body 6. Figure 1 The volume left in the middle (part A) area, the ejected water prevents the generation of vacuum and generates force, directly driving the submersible to move.

[0028] Example 2

[0029] This embodiment is a further improvement made on the basis of the embodiment 1. Compared with the embodiment 1, in order to solve the problem that the plunger body 6 has no shaft end (such as Figure 1 A vacuum phenomenon is generated around the middle A portion, and a small water spray hole 81 is drilled at the end of the water spray check valve plate 8. During the return stroke, water sprayed from the small water spray hole 81 can prevent vacuum from being generated. A conical guide navel 82 is provided in the middle of the end of the water spray check valve plate 8 to achieve a guide effect.

[0030] Example 3

[0031] This embodiment is a further improvement made on the basis of embodiment 1 or 2. Compared with embodiment 1 or 2, in order to improve the propulsion efficiency, the surface of the plunger body 6 is smooth, and a non-hydrophilic coating such as polytetrafluoroethylene is sprayed to reduce friction resistance. The sum of the equivalent throat diameters of the water inlet check valve assembly 1 is greater than the sum of the equivalent throat diameters of the connecting check valve assembly 1 4, thereby reducing fluid resistance. The sum of the areas of all the water spray ports of the water spray check valve plate 8 is less than the equivalent throat diameter of the water inlet check valve assembly 1, so that the water sprayed out of the cylinder can generate thrust.

[0032] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A plunger direct-push thruster, comprising a plunger body (6), a piston body (3) and a main shaft (13), wherein the plunger body (6) and the piston body (3) are connected as a whole by the main shaft (13), characterized in that: The surface of the plunger body (6) is sleeved with a plunger cylinder body (5) adapted thereto. The surface of the plunger body (6) is smooth. The plunger cylinder body (5) is provided with a water replenishment cylinder body (2) integrally formed therewith. The plunger cylinder body (5) and the water replenishment cylinder body (2) are two independent cylinder bodies respectively. The piston body (3) is located in the water replenishment cylinder body (2). The main shaft (13) penetrates through the water replenishment cylinder body (2) and extends into the plunger cylinder body (5). A water spray check seat (7) and a water spray check valve plate (8) are provided in the plunger body (6). The water spray check valve plate (8) is provided in the water spray check seat (7). A valve seat water inlet (9) is provided on the water spray check seat (7). The upper surface of the water replenishment cylinder (2) is provided with a water inlet check valve assembly (1) in communication with the water replenishment cylinder (2), the lower surface of the water replenishment cylinder (2) is provided with a cylinder body water discharge check valve assembly (12) in communication with the water replenishment cylinder (2), the upper surface of the plunger cylinder (5) is provided with a plunger cylinder water replenishment check valve assembly (10), the surface of the plunger cylinder (5) is respectively provided with a connecting check valve assembly 1 (4) and a connecting check valve assembly 2 (11), the connecting check valve assembly 1 (4) and the connecting check valve assembly 2 (11) are both connected to the water replenishment cylinder (2) and the plunger cylinder (5), the connecting check valve assembly 1 (4) is connected to the top of the water replenishment cylinder (2), and the connecting check valve assembly 2 (11) is connected to the bottom of the water replenishment cylinder (2).

2. A plunger direct pusher according to claim 1, characterized in that: The top of the water replenishment cylinder body (2) is connected to a flange, a sealing assembly (14) is arranged on the flange, and the main shaft (13) passes through the sealing assembly (14) and extends into the water replenishment cylinder body (2).

3. A plunger direct pusher according to claim 1, characterized in that: A small water spray hole (81) is drilled at the end of the water spray check valve plate (8), and a conical flow guide navel (82) is provided in the middle of the end of the water spray check valve plate (8).

4. A plunger direct pusher according to claim 1, characterized in that: The sum of the equivalent throat diameters of the water inlet one-way valve assembly (1) is greater than the sum of the equivalent throat diameters of the connecting one-way valve assembly (4).

5. A plunger direct pusher according to claim 3, characterized in that: The sum of the areas of all the water spray outlets of the water spray one-way valve plate (8) is smaller than the equivalent throat diameter of the water inlet one-way valve assembly (1).

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