Time-adjustable air separator for multi-stage water rocket and multi-stage water rocket

Abstract

The utility model relates to a time-adjustable air separator for a multi-stage water rocket, which comprises a first pipe body and a hose, and the inner diameter of the hose is smaller than the outer diameter of the first pipe body so as to form expanded connection when the first pipe body is inserted into the hose; the upper end opening of the hose is provided with a radial flange which is arranged outwards, and the lower surface of the radial flange of the hose is further provided with a sealing groove and a connecting convex ring and is connected with a second pipe body; a pressure relief hole is formed in the pipe wall of the second pipe body; the bottom of the hose is provided with a connecting through hole and a first one-way valve; and the bottom of the second pipe body is provided with a mounting hole communicated with the interior and a second one-way valve. The time-adjustable air separator can be used for quickly inflating a multi-stage rocket body and adjusting the separation time of the rocket body, so that the launching operation efficiency can be improved, a self-provided sealing structure and a simplified product structure are realized through the radial flange, the sealing groove and the like which are formed by the hose, and the assembling time and the material cost are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to model water rocket technical field, especially a multistage water rocket with adjustable time air separator and the multistage water rocket. BACKGROUND

[0002] The existing water rocket is usually carbonated beverage bottle such as coke bottle as water rocket main part, and is connected with a nozzle at the bottle mouth. The existing water rocket launching device mainly includes base and quick connector connected with the nozzle on the water rocket body, and the bottom of the quick connector is directly provided with the inflation port to connect the air cylinder and other inflation equipment. Their launching process is to inflate first, then pull the external connector of the quick connector by the cable to make the quick connector release the rocket body and launch it. The action of the quick connector needs manual operation. On the other hand, there are currently simulation launches of multistage rockets, but the multistage rockets obviously cannot rely on manpower to achieve air separation. Therefore, a device suitable for connecting multistage rockets and achieving automatic separation needs to be developed.

[0003] The applicant has developed an adjustable time air separator, but the separator launcher can control the separation time. However, in order to control the separation time, the airflow passage of the adjustable valve needs to be controlled to be very small, which leads to a long time to achieve pressure balance of each gas chamber during the inflation operation, affecting the launching efficiency and experience.

[0004] Furthermore, the separator in the prior art has a relatively tight rubber tube of the internal one-way valve, resulting in a large pressure difference between the upper and lower rockets. SUMMARY

[0005] The utility model aims at overcoming the above-mentioned shortcomings of the prior art, providing an adjustable time air separator that can control the separation time and quickly inflate, solving the problem of long air inflation time of the water rocket caused by the existing air separator in use.

[0006] The utility model adopts the technical scheme: a multistage water rocket with adjustable time air separator, the separator includes:

[0007] A first pipe body that can communicate with the interior of the upper rocket body and extend downward, and the first pipe body is inflated into the interior of the upper rocket body;

[0008] A hose that can be connected with the lower rocket body and extend into the interior of the lower rocket body, the inner diameter of the hose is smaller than the outer diameter of the first pipe body to form a bulging joint when the first pipe body is inserted into the hose;

[0009] The upper end of the hose is provided with a radial flange outwardly arranged, and a sealing groove and a connecting convex ring are further arranged on the lower surface of the radial flange of the hose, and a second pipe body is connected to the outside of the hose through the sealing groove and the connecting convex ring, i.e. the upper end surface of the second pipe body is embedded into the sealing groove and the inner wall of the upper end of the second pipe body is in contact with the connecting convex ring; a gas chamber is formed between the inner wall of the second pipe body and the outer wall of the hose, and a pressure relief hole is arranged on the pipe wall of the second pipe body;

[0010] The bottom of the hose is provided with a connecting through hole, and a first one-way valve is arranged in the hose at the connecting through hole;

[0011] The bottom of the second pipe body is provided with a mounting hole in communication with the inside and a second one-way valve is arranged in the mounting hole.

[0012] A concave surface is formed on the middle part of the outer wall of the first pipe body;

[0013] The first one-way valve comprises a valve core and a rubber tube, an air inlet pipeline is arranged in the valve core in an axial direction, the valve core is sealingly connected to the connecting through hole of the bottom of the hose through expansion, an air outlet hole is arranged in the side wall of the upper end of the valve core and is in communication with the air inlet pipeline, and the rubber tube is sleeved on the outer wall at the air outlet hole.

[0014] A limiting flange is formed on the lower part of the outer wall of the valve core of the first one-way valve.

[0015] The upper end of the outer wall of the first pipe body has a thickened section, a first sealing ring groove is arranged on the outer wall of the thickened section, and a sealing ring is arranged in the first sealing ring groove to sealingly connect with the upper rocket body.

[0016] The utility model discloses a water rocket, which comprises a superior rocket body and an inferior rocket body, and the water rocket comprises the adjustable time air separation device of any one of the above-mentioned multi-stage water rockets.

[0017] The upper end surface of the second pipe body is provided with an outward clamping flange, and the clamping flange is in clamping contact with the bottle mouth end surface of the inferior rocket body to prevent the second pipe body from falling into the inferior rocket body.

[0018] The adjustable time air separation device can quickly inflate the multi-stage rocket body and adjust the separation time of the rocket body, thereby improving the operation efficiency of launching, and the radial flange and the sealing groove formed on the hose are used to realize the self-sealing structure, simplify the product structure, and save the assembly time and material cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is the exploded sectional view of the air separator of the utility model;

[0020] Fig. 2 is the partially combined sectional view of the air separator of the utility model;

[0021] Fig. 3 is the sectional view of the water rocket of the utility model. DETAILED DESCRIPTION

[0022] As Figs. 1-3 shown, the utility model discloses a kind of adjustable time air separators for multistage water rockets, which includes:

[0023] A first pipe body 1 that can be communicated with the inside of upper rocket body 5 and extend downward, the first pipe body 1 is hard plastic material, it is locked and connected with the bottle mouth of upper rocket body 5 by first cover body 51, and the first pipe body 1 passes out first cover body 51 and is inflated by the first pipe body 1 to the inside of upper rocket body 5;

[0024] A hose 2 that can be connected with lower rocket body 6 and extend into the inside of lower rocket body 6, the pipe diameter of hose 2 is less than the outer diameter of first pipe body 1 to form expansion joint when first pipe body 1 is inserted into hose 2;That is, the connection of upper rocket body 5 and lower rocket body 6 is formed by the insertion of first pipe body 1 and hose 2;

[0025] The upper port of hose 2 has radially flange 21 outward, which is locked and connected with the bottle mouth of lower rocket body 6 by radially flange 21 and second cover body 61, and the lower surface of radially flange 21 of the hose 2 is also provided with a sealing groove 22 and a connecting convex ring 23, a second pipe body 3 is connected outside the hose 2 through the sealing groove 22 and the connecting convex ring 23, the second pipe body 3 is also hard plastic material, that is, the upper end surface of second pipe body 3 is embedded in the sealing groove 22 to form sealed connection, and the inner wall of the upper port of second pipe body 3 is in contact with connecting convex ring 23 to form friction force to avoid second pipe body 3 from separating from hose 2;The inner wall of the second pipe body 3 and the outer wall of the hose 2 form an air chamber 300, and a pressure relief hole 301 is provided on the pipe wall of the second pipe body 3;

[0026] The bottom of hose 2 is provided with a connecting through hole 24, and a first check valve 4 is installed in the hose at the connecting through hole 24;When the first pipe body 1 is inserted into the inside of hose 2, the gas outlet hole of first check valve 4 is located in the first pipe body 1, to directly supply gas to upper rocket body 5;

[0027] The bottom of the second pipe body 3 is provided with a mounting hole 302 communicated with the inside and mounted with a second check valve 31, and the second check valve 31 can be a common valve core.

[0028] The first pipe body 1 passes through the first cover 51 and the second cover 61 downwards, is expanded and inserted into the hose 2 and communicates with the inside of the hose 2 and the first one-way valve 4;

[0029] Through the structure, when inflating, air can be inflated from the lower arrow body 6 to the inside of the second pipe body 3 through the second one-way valve 31, and as the air pressure in the second pipe body 3, i.e. the air chamber 300, increases, air is rapidly filled into the upper arrow body 5 through the first one-way valve 4 at the bottom of the hose 2, thereby greatly shortening the time required for inflation, and the rubber ring 42 of the first one-way valve 4 can be relatively loose to reduce the pressure difference between the upper and lower arrow bodies and reduce pressure loss; when releasing, the lower arrow body 6 loses pressure first to generate power to make the whole arrow body launch into the air, and then the pressure in the air chamber 300 is slowly released through the pressure relief hole 301, when the air pressure of the upper arrow body 5 is greater than the pressure of the air chamber and the pressure generated by the elasticity of the hose, the hose 2 expands to reduce the holding force between the hose 2 and the first pipe body 1 and make them separate, thereby making the upper arrow body 5 and the first pipe body 1 separate from the hose 2 and the lower arrow body 6, realizing the effect of air delay separation of the water rocket in the air.

[0030] A concave surface 11 is formed on the outer wall of the middle part of the first pipe body 1, so that the hose 2 can better hold the first pipe body 1;

[0031] The first one-way valve 4 includes a valve core 41 and a rubber tube 42, the valve core 41 is internally provided with an air inlet pipe 401 arranged in the axial direction, the bottom of the valve core 41 is connected and sealed with the connecting through hole 24 at the bottom of the hose 2 by expansion, the side wall of the upper end of the valve core 41 is provided with an air outlet hole 402 communicating with the air inlet pipe 401, and the rubber tube 42 is sleeved on the outer wall where the air outlet hole 402 is located, thereby forming the first one-way valve 4. That is, the gas from the lower arrow body 6 enters the air chamber 300 through the second one-way valve 31 at the bottom of the second pipe body 3, then enters the hose 2, the first pipe body 1 and the upper arrow body 5 through the air inlet pipe 401 in the valve core 41 of the first one-way valve 4 after pushing open the rubber tube 42 and passing through the air outlet hole 402, and the rubber tube 42 seals the air outlet hole 402 after reaching balance.

[0032] The lower part of the outer wall of the valve core 41 of the first one-way valve 4 is formed with a limiting flange 411, which is convenient for positioning and plug-in assembly of the first one-way valve 4 and the connecting through hole 24 at the bottom of the hose 2, and the first one-way valve 4 is plug-in assembled from the top to the bottom of the hose 2, which is relative to the plug-in assembly of the one-way valve from the bottom of the hose, and the limiting flange 411 can prevent the first one-way valve 4 from being pushed open and separated from the hose 2 when the upper water rocket releases pressure, thereby avoiding reassembly of the one-way valve when repeatedly used.

[0033] The outer wall of the upper end of the first pipe body 1 has a thickened section 12, the outer wall of the thickened section 12 is provided with a sealing ring groove 121 and is installed with a sealing ring to be sealingly connected with the upper arrow body 5.

[0034] The radial flange, the sealing groove and the connecting convex ring of the hose are used to realize the sealing between the second pipe body and the hose, the hose and the lower rocket body, and the sealing ring is not needed, so that the structure is simplified, the assembly time and the material cost are saved.

[0035] The utility model discloses a kind of water rockets, including upper rocket body 5 and lower rocket body 6, it includes the multi-stage water rocket adjustable time air separator of any one described above;Wherein, first pipe body 1 upper end portion is sealedly connected in the inside of upper rocket body 5 by first cover body 51, and lower end portion extends downward and out;Hose 2 is locked and connected by the radial flange 21 and second cover body 61 with the bottle mouth of lower rocket body 6, and second pipe body 3 is located inside lower rocket body 6 as a whole;First cover body 51, second cover body 61 are all provided with the pipe hole for first pipe body 1 to pass through;Upper rocket body 5 and lower rocket body 6 are inserted into the inside of hose 2 by first pipe body 1, and the inner wall of hose 2 expands and connects with the outer wall of first pipe body 1 due to elasticity, and the first pipe body 1 is formed connection by certain holding force.

[0036] The upper end surface of the second pipe body 3 has an outward clamping flange 32, which forms a clamping contact with the bottle mouth end surface of the lower rocket body 6 to prevent the second pipe body 3 from falling into the lower rocket body 6 during use.

[0037] In this embodiment, the connection between the first pipe body 1 and the upper rocket body 5 in the adjustable time air separator is achieved by the first cover body 51. Of course, the upper end of the first pipe body 1 can also be designed as a capped structure that can be directly locked and sealed with the bottle mouth of the upper rocket body 5.

[0038] The adjustable time air separator of the utility model can not only quickly inflate the multi-stage rocket body, but also adjust the rocket body separation time, thereby improving the launch operation efficiency. Moreover, the radial flange and the sealing groove formed by the hose realize a self-sealing structure, simplify the product structure, and save assembly time and material cost.

[0039] It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principles of the utility model, but the utility model is not limited thereto. For ordinary skilled persons in the art, various modifications and improvements can be made without departing from the spirit and essence of the utility model, and these modifications and improvements are also considered as the protection scope of the utility model.

Claims

1. An adjustable-time air-to-ground separator for a multi-stage water rocket, the separator comprising: A first tube that can communicate with the interior of the upper-level arrow body and extend downwards, and through which air is pumped into the interior of the upper-level arrow body; A flexible tube that can be connected to and extend into the lower stage rocket body, the inner diameter of the flexible tube being smaller than the outer diameter of the first stage rocket body to form an expansion joint when the first stage rocket body is inserted into the flexible tube; The upper end of the hose has an outwardly facing radial flange. The lower surface of the radial flange of the hose is also provided with a sealing groove and a connecting protrusion. A second tube body is connected to the outside of the hose through the sealing groove and the connecting protrusion. That is, the upper end face of the second tube body is embedded in the sealing groove and the inner wall of the upper end of the second tube body is in contact with the connecting protrusion. An air chamber is formed between the inner wall of the second tube body and the outer wall of the hose, and a pressure relief hole is provided on the tube wall of the second tube body. The bottom of the hose is provided with a connection through hole, and a first one-way valve is installed at the connection through hole facing into the hose; A second one-way valve is installed at the bottom of the second tube, which communicates with the interior.

2. The adjustable-time air-to-air separator for multi-stage water rockets according to claim 1, characterized in that: A concave surface is formed on the outer wall of the middle part of the first tube.

3. The adjustable-time air-to-ground separator for multi-stage water rockets according to claim 1, characterized in that: The first one-way valve includes a valve core and a rubber tube. The valve core has an axially arranged air inlet pipe inside. The bottom of the valve core is connected to the bottom of the hose through a sealing hole by expansion. The upper end side wall of the valve core has an air outlet hole that communicates with the air inlet pipe. The rubber tube is sleeved on the outer wall where the air outlet hole is located.

4. The adjustable-time air-to-air separator for multi-stage water rockets according to claim 3, characterized in that: The lower outer wall of the first one-way valve core is formed with a limiting flange.

5. The adjustable-time air-separator for a multi-stage water rocket according to claim 1 or 2, characterized in that: The upper end of the first tube has a thickened section on its outer wall, and the outer wall of the thickened section is provided with a sealing ring groove and a sealing ring is installed thereon.

6. A water rocket, comprising an upper stage rocket body and a lower stage rocket body, characterized in that: It includes the adjustable time air separator for a multi-stage water rocket as described in any one of claims 1-5; wherein, the upper end of the first tube is sealed and connected to the inside of the upper stage rocket body, and the lower end extends downward; the hose is locked and connected to the bottle mouth of the lower stage rocket body through the radial flange and the second cover, and the second tube is located inside the lower stage rocket body; the upper stage rocket body and the lower stage rocket body are connected by inserting the first tube into the hose, and the inner wall of the hose expands with the outer wall of the first tube due to elasticity, generating a certain clamping force on the first tube body to form a connection.

7. The water rocket according to claim 6, characterized in that: The upper end face of the second tube has an outwardly facing locking flange, which forms a locking contact with the bottle mouth end face of the lower arrow body.

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