Separating device for water rocket

Abstract

The separating device for the water rocket is provided with an outer sleeve and an inner sleeve, the outer sleeve is movably arranged outside the inner sleeve in a sleeving mode, the inner sleeve is provided with a base, a first through hole is formed in the base, a second through hole is formed in the side wall of the inner sleeve, two bosses are symmetrically arranged on the outer sleeve along the inner circumference, and balls are installed between the inner sleeve and the outer sleeve. The second through hole is located in the second through hole and located above the boss; the ventilation column is in a hollow column shape, a supporting seat is arranged in the middle of the ventilation column, the supporting seat is provided with a supporting column, the supporting column penetrates through the first through hole of the inner sleeve base to be connected with the bottom of the outer sleeve in an abutting mode, and a one-way air valve is arranged at the bottom of the ventilation column; a step surface is arranged in the outer cylinder, the supporting seat is positioned on the step surface, and the base of the inner sleeve is fixedly connected with the upper part of the outer cylinder. The water rocket separating device can expand the stage number of the water rocket, and is simple in structure, high in success rate, light in weight and not prone to damage.

Description

Technical Field

[0001] The utility model belongs to the field of water rocket launching, and particularly relates to a separation device for a water rocket. Background Art

[0002] The launch of the water rocket model is powered by water, which is green and environmentally friendly. It can complete launch, air separation and recovery. In primary and secondary education, water rockets have a wide range of applications. The separation technology of water rockets determines the success or failure of the launch process.

[0003] Chinese patent publication number CN113658504A discloses a water rocket pressure-actuated interstage locking-separation device, which requires a locking-separator control rope during the separation process and has a complex structure. Another Chinese patent publication number: CN220357725U discloses a multi-stage water rocket separation device that can be easily inflated. The overall mass of the device is large and it is easily damaged when it lands on the ground. Summary of the invention

[0004] The utility model aims to provide a water-fire arrow separation device, which has a high separation success rate, a simple and stable structure, and a lightweight overall device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A separation device for a water rocket comprises an outer sleeve and an inner sleeve, wherein the outer sleeve is movably sleeved on the outside of the inner sleeve, the inner sleeve has a base, the base is provided with a through hole 1, the side wall of the inner sleeve is provided with a through hole 2, the outer sleeve is provided with a boss along the inner circumference, a ball is installed between the inner sleeve and the outer sleeve, positioned in the through hole 2, and above the boss; a ventilation column, the ventilation column is a hollow column, a support seat is provided in the middle of the ventilation column, the support seat has a support column, the support column passes through the through hole 1 of the base of the inner sleeve and abuts against the bottom of the outer sleeve, and the bottom of the ventilation column is provided with a one-way air valve; an outer tube, the inner part of the outer tube has a step surface, the support seat is located above the step surface, and the base of the inner sleeve is fixedly connected to the outer tube.

[0007] As a further solution of the utility model, the boss of the outer sleeve is also provided with a limiting protrusion above, and the top of the inner sleeve is provided with a blocking piece. The outer sleeve can be rotated at a certain angle relative to the inner sleeve, and the limiting protrusion and the blocking piece cooperate to prevent the inner sleeve and the outer sleeve from completely detaching.

[0008] As a further solution of the utility model, the outer diameter surface of the outer sleeve has a limiting groove, and the inner wall of the outer tube has a limiting protrusion that matches the limiting groove. Since the inner sleeve is fixedly connected to the outer tube, with the cooperation of the limiting groove and the limiting protrusion, the outer sleeve cannot rotate freely relative to the inner sleeve, but is limited to rotate at a certain angle.

[0009] As a further solution of the utility model, the number of the through holes 2 on the side wall of the inner sleeve is two, and the number of the limiting protrusions is the same as the number of the through holes 2.

[0010] As a further solution of the utility model, the number of the through holes one is two or more, and the number of the support columns is the same as the number of the through holes one.

[0011] As a further solution of the utility model, the ventilation column is divided into two parts, the upper part is thinner than the lower part, and sealing rings are provided on the upper and lower parts of the ventilation column.

[0012] As a further solution of the utility model, the number of the bosses is two, the two through holes are symmetrically positioned and are respectively located below the baffle, the outer sleeve rotates relative to the inner sleeve, and the initial limiting state is that the limiting protrusion is located at the through hole two, the limiting protrusion squeezes the ball, the device is locked, the outer sleeve rotates, and when it is limited again, the device is unlocked.

[0013] Beneficial effects: The separation device of the utility model can expand the number of water rockets, has a simple structure, is light in weight, is easy to control pressure, and has a high separation success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the separation device for the water rocket proposed by the utility model;

[0015] Figure 2 This is an exploded view of the separation device for the water rocket proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the positions of the outer sleeve and the outer cylinder in the separation device for the water rocket proposed by the utility model;

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the outer sleeve in the separation device for the water rocket proposed in the utility model;

[0018] Figure 5 A schematic diagram of the three-dimensional structure of the inner sleeve of the separation device for the water rocket proposed by the utility model;

[0019] Figure 6 A schematic diagram of the three-dimensional structure of the outer cylinder of the separation device for the water rocket proposed by the utility model;

[0020] Figure 7 A schematic diagram of the separation state of the water rocket separation device and the threaded nozzle proposed by the utility model;

[0021] In the figure: 1. inner sleeve; 11. ball bearing; 12. through hole 1; 13. through hole 2; 14. base; 15. baffle; 2. outer sleeve; 21. boss; 22. limit convex block; 23. limit groove; 3. ventilation column; 31. support seat; 32. support column; 33. one-way air valve; 4. outer tube; 41. limit convex; 42. step surface. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0024] See also Figure 1-7 In the embodiment of the utility model, the separation device for water rocket includes an inner sleeve 1 and an outer sleeve 2, the outer sleeve 2 is movably sleeved on the outside of the inner sleeve 1, the lower part of the inner sleeve 1 has a base 14, the inner sleeve base 14 is provided with a through hole 12, the side wall of the inner sleeve 1 has two symmetrical through holes 13, the outer sleeve 2 is symmetrically provided with two bosses 21 on the inner circumference, the ball 11 is installed between the inner sleeve 1 and the outer sleeve 2, specifically in the through hole 13, above the boss 21, because the inner sleeve 1 and the outer sleeve 2 are relatively movable, when the outer sleeve 2 moves upward, the boss 21 squeezes the ball 11 installed in the through hole 13, in order to prevent the ball 11 from being squeezed out of the through hole 13 when the boss 21 squeezes the ball 11, the diameter of the ball 11 in this embodiment is required to be greater than the diameter of the through hole 13.

[0025] The base 14 of the inner sleeve 1 is in contact with the support seat 31. The support seat 31 is provided with a support column 32. The number of the support columns 32 is the same as the number of the through hole 12. In this embodiment, the number of the support columns 32 and the through hole 12 are both four. The support column 32 passes through the through hole 12 and is in contact with the bottom of the outer sleeve 2. The support seat 31 is arranged on the ventilation column 3 and is fixedly connected to the ventilation column 3. In this embodiment, the ventilation column 3 is a hollow column, and the diameter of the upper part is smaller than that of the lower part. The support seat 31 passes through the upper part of the ventilation column 3. The upper and lower parts of the ventilation column 3 are both provided with sealing structures to prevent water leakage and air leakage. The lower part of the ventilation column 3 is provided with a one-way air valve 33. When inflating, gas enters from the one-way air valve 33.

[0026] The outer sleeve 2 can rotate relative to the inner sleeve 1, and can also move up and down. The base 14 of the inner sleeve 1 is fixedly connected to the outer tube 4. The interior of the outer tube 4 has a step surface 42, and the support seat 32 is placed on the step surface 42. The outer tube 4 also has a thread for connecting to the body of the water rocket.

[0027] The boss 21 of the outer sleeve 2 is also provided with a limiting protrusion 22, and the upper part of the inner sleeve 1 is provided with a baffle 15. The limiting protrusion 22 has two functions: first, it is a safety function. When the outer sleeve 2 is rotated, the limiting protrusion 22 reaches the position of the second through hole 13. At this time, the limiting protrusion 21 backlogs the ball 11, and the ball 11 protrudes inward. The separation mechanism is in a locked state and cannot be separated, ensuring safety. Second, the limiting protrusion 2 cooperates with the baffle 15 on the upper part of the inner sleeve 1. During the process of rotating the outer sleeve 2, the baffle 15 is always above the limiting protrusion 2 and in contact with it, so that the outer sleeve 2 can be ensured not to be separated from the inner sleeve 1.

[0028] The outer diameter surface of the outer sleeve 2 also has a limiting groove 23, and the inner wall of the outer tube 4 has a limiting protrusion 41 adapted to the limiting groove 23. Since the inner sleeve 1 is fixedly connected to the outer tube 4, the inner sleeve 1 is fixed. The rotation angle of the outer sleeve 2 relative to the inner sleeve 1 is controlled by the limiting groove 23 and the limiting protrusion 41, that is, the outer sleeve 2 cannot rotate 360 ​​degrees, but can only rotate within a limited angle. The initial limiting state of the rotation of the outer sleeve 2 relative to the inner sleeve 1 is that the limiting protrusion 22 is located at the second through hole 13, the limiting protrusion 21 squeezes the ball, and the separation device is locked. When the outer sleeve 2 rotates and is limited again, the separation device is unlocked.

[0029] During the operation of the entire separation device, the inner sleeve 1 and the outer tube 4 always remain in a relatively static state. After the water rocket is pressurized, under the pressure of the lower-stage water rocket body, the ventilation column 3 moves upward, driving the support column 31 to push the outer sleeve 2. The outer sleeve 2 moves upward relative to the inner sleeve 1, so that the boss 21 produces an extrusion pressure on the ball 11.

[0030] In this embodiment, the rocket bodies of each stage of the water rocket can be made of recycled carbonated beverage bottles. The beverage bottles can be used as the rocket bodies of the water rockets and can be directly mounted on the lower part of the ventilation column 3.

[0031] In this embodiment, the lower end of the ventilation column 3 has an internal thread, and the one-way air valve 33 is fixedly connected to the connecting column 3 through the internal thread. The function of the one-way air valve 33 is that the gas passes through the one-way air valve and utilizes the hollow channel of the ventilation column 3 to be filled into the rocket body of the upper-stage water rocket.

[0032] Before the water rocket is launched, it is necessary to fill the water rocket with water and pressurize it. Before pressurization, the ball 11 installed in the second through hole 13 is in a free state, and the connecting end of the upper water rocket body is sleeved on the upper part of the ventilation column 3. A threaded nozzle 6 will be used here. The threaded nozzle 6 belongs to the prior art and will not be described here. When not pressurized, due to the lack of pressure in the bottle, the water rocket body can be easily removed from the inner sleeve 1. The lower part of the ventilation column 3 is connected to the lower water rocket body. First, the lower water rocket body is pressurized, and the gas enters the upper water rocket body through the one-way air valve 33. Under the action of pressure, the ventilation column 3 moves upward relative to the outer tube 4, and the ventilation column 3 drives the support column 31 on the support seat 32. The support column 31 pushes the outer sleeve 2 to move upward. At this time, the boss 21 squeezes the ball 11, and the ball 11 protrudes inward, forming a locking mechanism, which locks the threaded nozzle 6 sleeved on the upper part of the ventilation column 3. At this time, the inner sleeve 1 forms a locking connection with the upper water rocket.

[0033] After the pressurization of each stage of the rocket body is completed, it is launched. During the flight of the water rocket, the lower-stage water rocket first provides the flight power. When the lower-stage water rocket body loses pressure, the lower-stage water rocket no longer has pressure on the ventilation column 3. Linkedly, the boss 21 also loses the squeezing force on the ball 11. Since there is still pressure in the upper-stage water rocket body at this time, the upper-stage water rocket is separated from the inner sleeve 1 under the action of the pressure of the upper-stage water rocket, completing the separation of the water rocket.

[0034] The separation device of the utility model can expand the number of stages of the water rocket. When inflating and pressurizing, each stage of the rocket body needs to be pressurized separately. Through the one-way air valve, the arrow heads of each stage can be pressurized at the last stage of the rocket body. The structure is simple, the pressure is easy to control, and the success rate is high.

[0035] In addition, in addition to being used for rocket body separation during flight, the separation device can also be used for the separation process during water rocket reflection. The separation success rate is high, and its structure is simple, the weight is light, and it is not easy to damage.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A separation device for a water rocket, characterized in that: have: An outer sleeve and an inner sleeve, wherein the outer sleeve is movably sleeved on the outside of the inner sleeve, the inner sleeve has a base, the base is provided with a through hole 1, the side wall of the inner sleeve is provided with a through hole 2, the outer sleeve is provided with a boss along the inner circumference, and the ball is installed between the inner sleeve and the outer sleeve, and is located in the through hole 2 and above the boss; A ventilation column, the ventilation column is a hollow column, a support seat is arranged in the middle of the ventilation column, the support seat has a support column, the support column passes through a through hole of the inner sleeve base and abuts against the bottom of the outer sleeve, and a one-way air valve is arranged at the bottom of the ventilation column; The outer cylinder has a stepped surface inside, the support seat is located on the stepped surface, and the base of the inner sleeve is fixedly connected to the outer cylinder.

2. The separation device for water rocket according to claim 1, characterized in that: The boss of the outer sleeve is also provided with a limiting protrusion above, and the top of the inner sleeve is provided with a blocking piece. The outer sleeve can rotate at a certain angle relative to the inner sleeve, and the limiting protrusion and the blocking piece cooperate to prevent the inner sleeve and the outer sleeve from being completely separated.

3. The separation device for water rocket according to claim 2, characterized in that: The outer diameter surface of the outer sleeve is provided with a limiting groove, and the inner wall of the outer tube is provided with a limiting protrusion adapted to the limiting groove. Since the inner sleeve is fixedly connected to the outer tube, with the cooperation of the limiting groove and the limiting protrusion, the outer sleeve cannot rotate freely relative to the inner sleeve, but is limited to rotate at a certain angle.

4. The separation device for water rocket according to claim 3, characterized in that: The number of through holes 2 on the side wall of the inner sleeve is two, and the number of the limiting protrusions is the same as the number of through holes 2.

5. The separation device for water rocket according to claim 1, characterized in that: The number of the through holes one is two or more, and the number of the support columns is the same as the number of the through holes one.

6. The separation device for a water rocket according to claim 1, characterized in that: The ventilation column is divided into two parts, the upper part is thinner than the lower part, and sealing structures are arranged on the upper and lower parts of the ventilation column.

7. The separation device for a water rocket according to claim 4, characterized in that: There are two bosses, and the two through holes are symmetrically positioned and respectively located below the baffle. The outer sleeve rotates relative to the inner sleeve, and the initial limiting state is that the limiting protrusion is located at the through hole two. The limiting protrusion squeezes the ball, and the device is locked. The outer sleeve rotates, and when it is limited again, the device is unlocked.

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