An anti-gas-diffusion dynamic valve rubber nozzle

Abstract

The utility model discloses a kind of anti-overflow pneumatic valve rubber nozzles, including spray head, the side of spray head is provided with connecting barrel, the other side of spray head is provided with rubber nozzle, the surface of air inlet cylinder is provided with air inlet cover, the surface of spring cylinder is provided with spring bin cover;Air inlet cover top is provided with air inlet hole, the inside of spray head is provided with valve core rod assembly.The anti-overflow pneumatic valve rubber nozzle, when working, compressed air enters air inlet cover inner chamber, drives valve core rod to move downwards, at this time, spring baffle extrudes telescopic spring, when connecting barrel, glue outlet hole and rubber nozzle form a straight line, sealant is sprayed through rubber nozzle, after glue coating is finished, compressed air is discharged, at this time, telescopic spring releases elastic force, drives valve core rod to reset, sealant is blocked by valve core rod, sealant cannot be discharged through rubber nozzle, solve the problem that rubber nozzle cannot stop quickly due to the elasticity of sealant itself after pressure relief, leading to sealant still continuously overflow a small amount.

Description

Technical Field

[0001] This utility model relates to the field of aviation sealant application technology, and in particular to anti-overflow pneumatic valve nozzles. Background Technology

[0002] The application of sealants is a key process in aircraft manufacturing and maintenance to ensure the airtightness, corrosion resistance, and safety of aircraft structures. The quality of the application directly affects the aerodynamic performance, service life, and flight safety of the aircraft. When the sealant is extruded, a pneumatic glue gun is required for application.

[0003] When using existing pneumatic glue guns or equipment, the nozzle cannot stop quickly after the sealant releases pressure due to its elasticity. This causes sealant to continue to overflow in small amounts, polluting the construction site and making it difficult to clean. In addition, the overflowing sealant can also lead to excessive sealant in the applied areas, affecting the use of subsequent parts. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides an anti-overflow pneumatic valve nozzle. This device adopts an integrated design of nozzle and shut-off valve, which enables the valve to be closed immediately after compressed air is exhausted, thus ensuring that the sealant does not overflow.

[0005] To solve the above-mentioned technical problems and achieve the above-mentioned technical effects, this utility model is implemented through the following technical solution:

[0006] The technical solution of this utility model is: an anti-overflow pneumatic nozzle with valve, including a nozzle, a connecting cylinder connected to a glue cylinder is provided on one side of the nozzle, a glue nozzle capable of dispensing glue is provided on the other side of the nozzle, an air inlet cylinder is provided at the top of the nozzle, a spring cylinder is provided at the bottom of the nozzle, an air inlet cover is provided on the surface of the air inlet cylinder, and a spring chamber cover is provided on the surface of the spring cylinder.

[0007] An air inlet hole is provided on the top of the air inlet cover, a valve core rod assembly is provided inside the nozzle, a spring baffle is slidably provided inside the spring chamber cover, a support spring is provided between the bottom of the spring baffle and the inner wall of the spring chamber cover, and the top of the spring baffle is in contact with the bottom of the valve core rod assembly.

[0008] Furthermore, the surface of the air intake cylinder is provided with an upper thread, and the air intake cover is connected to the air intake cover through the upper thread.

[0009] Furthermore, the valve core rod assembly includes a valve core rod disposed inside the nozzle, the surface of the valve core rod having a dispensing hole that is transversely opened and communicates with the nozzle, and a sealing cap is fixedly installed on the top of the valve core rod, the surface of the sealing cap being provided with a rubber ring that contacts the inner wall of the air inlet cylinder;

[0010] When the connecting cylinder, the dispensing hole, and the nozzle are on the same horizontal line, the sealant can pass through the connecting cylinder, the dispensing hole, and the nozzle in sequence, and then be discharged through the nozzle.

[0011] When the connecting cylinder, the dispensing hole, and the nozzle are not on the same horizontal line, the sealant cannot be discharged through the nozzle.

[0012] Furthermore, the diameter of the spring compartment cover is larger than the diameter of the spring cylinder, and the surface of the spring cylinder is provided with a downward thread, through which the spring compartment cover is connected to the spring cylinder.

[0013] Furthermore, the diameter of the spring baffle is smaller than the diameter of the spring cylinder, and the surface of the spring baffle is provided with a sealing ring that contacts the inner wall of the spring cylinder.

[0014] Furthermore, the diameter of the valve core rod is smaller than the diameter of the sealing cap, and the diameter of the sealing cap is smaller than the diameter of the air inlet cylinder.

[0015] Furthermore, the length of the valve core rod is less than the length of the nozzle.

[0016] Furthermore, the nozzle adopts an ultra-short design.

[0017] The beneficial technical effects of this utility model are as follows: By setting a connecting cylinder on one side of the nozzle, the device can be directly threadedly connected to the glue gun through the connecting cylinder. During operation, compressed air enters the inner cavity of the air inlet cover through the air inlet hole and pushes the sealing cover downward, causing the sealing cover to drive the valve core rod downward. At this time, the valve core rod squeezes the telescopic spring through the spring baffle. When the connecting cylinder, glue outlet hole, and glue nozzle are in a straight line, the sealant is sprayed out through the glue nozzle. After the sealant is applied, the compressed air is discharged through the air inlet hole. At this time, the telescopic spring releases its elastic force and drives the valve core rod to move upward back to its original position. At this time, the connecting cylinder, glue outlet hole, and glue nozzle are not on the same horizontal line. Subsequently, the sealant is blocked by the valve core rod and cannot be discharged through the glue nozzle. This avoids the problem that the glue nozzle cannot stop quickly after the sealant itself is depressurized due to its elasticity, resulting in a continuous small amount of sealant overflowing, which causes pollution at the construction site and is difficult to clean. Attached Figure Description

[0018] Figure 1 This is an exploded view of the structure of this utility model;

[0019] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 3 This is a front view schematic diagram of the structure of this utility model.

[0021] The numbers and letters in the diagram represent the names of the corresponding components:

[0022] 1. Nozzle; 11. Connecting cylinder; 12. Air inlet cylinder; 13. Spring cylinder; 14. Nozzle; 2. Air inlet cover; 21. Air inlet hole; 3. Spring chamber cover; 4. Spring baffle; 5. Valve core rod; 51. Dispensing hole; 52. Sealing cover. Detailed Implementation

[0023] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0024] See appendix Figure 1-3 As shown, an anti-overflow pneumatic valve nozzle includes a nozzle 1. A connecting tube 11 connected to a glue cartridge is provided on one side of the nozzle 1. The sealant inside the glue cartridge can enter the interior of the nozzle 1 through the connecting tube 11. A nozzle 14 capable of dispensing glue is provided on the other side of the nozzle 1. The nozzle 14 adopts an ultra-short design. The ultra-short design can ensure that after the sealant dispensing stops, the amount of sealant residue in the nozzle 1 is small, and glue overflow will not occur.

[0025] The nozzle 1 has an air inlet cylinder 12 at its top and a spring cylinder 13 at its bottom. The air inlet cylinder 12 has an air inlet cover 2 on its surface and an upper thread. The air inlet cover 2 is connected to the nozzle 13 via the upper thread. The spring cylinder 13 has a spring chamber cover 3 on its surface. The diameter of the spring chamber cover 3 is larger than the diameter of the spring cylinder 13. The spring cylinder 13 has a lower thread and is connected to the spring cylinder 13 via the lower thread. The air inlet cover 2 has an air inlet hole 21 at its top, which connects the air inlet cover 2 to an external inflation device, allowing compressed gas to enter the interior of the air inlet cylinder 12 through the air inlet hole 21. The nozzle 1 has a valve core rod assembly inside. The spring chamber cover 3 has a spring baffle 4 slidably mounted inside. A support spring is mounted between the bottom of the spring baffle 4 and the inner wall of the spring chamber cover 3. The top of the spring baffle 4 contacts the bottom of the valve core rod assembly, and the spring baffle 4 can fix the support spring. The spring baffle 4 can move vertically inside the spring cylinder 13.

[0026] The valve core rod assembly includes a valve core rod 5 disposed inside the nozzle 1. The surface of the valve core rod 5 has a horizontally extending dispensing hole 51 that communicates with the nozzle 14. When the connecting cylinder 11, the dispensing hole 51 and the nozzle 14 are on the same horizontal line, the sealant can pass through the connecting cylinder 11, the dispensing hole 51 and the nozzle 14 in sequence and then be discharged through the nozzle 14. When the connecting cylinder 11, the dispensing hole 51 and the nozzle 14 are not on the same horizontal line, the sealant cannot be discharged through the nozzle 14.

[0027] A sealing cover 52 is fixedly installed on the top of the valve core rod 5. The surface of the sealing cover 52 is provided with a rubber ring that contacts the inner wall of the air inlet cylinder 12. The diameter of the spring baffle 4 is smaller than the diameter of the spring cylinder 13. The surface of the spring baffle 4 is provided with a sealing ring that contacts the inner wall of the spring cylinder 13. The diameter of the valve core rod 5 is smaller than the diameter of the sealing cover 52, and the diameter of the sealing cover 52 is smaller than the diameter of the air inlet cylinder 12.

[0028] The rubber ring design ensures no air leakage when compressed air enters, while the sealing ring prevents the telescopic spring from coming into contact with the sealant.

[0029] When compressed air enters the inner cavity of the air inlet cover 2 through the air inlet 21, the compressed air pushes the glue outlet 51 to move parallel to the glue nozzle 14 through the sealing cover 52. At this time, the valve core rod 5 pushes the spring baffle 4 downward, causing the support spring to contract. Then, the glue passes through the connecting cylinder 11 and the glue outlet 51 in sequence, and then is discharged through the glue nozzle 14. When the compressed air is discharged through the air inlet 21, the support spring releases its elastic force and drives the valve core rod 5 to move upward and reset through the spring baffle 4. At this time, the glue outlet 51 disconnects from the glue nozzle 14, and the sealant cannot enter the interior of the glue nozzle 14 through the glue outlet 51. Therefore, the sealant cannot be discharged through the glue nozzle 14.

[0030] Furthermore, the length of the valve core rod 5 is less than the length of the nozzle 1, and the diameter of the spring chamber cover 3 is greater than the diameter of the spring cylinder 13. By designing the valve core rod 5 to be shorter than the nozzle 1, the valve core rod 5 can move vertically within the inner cavity of the nozzle 1. The design of the spring chamber cover 3 to be greater than the spring cylinder 13 allows the spring chamber cover 3 to be threaded onto the surface of the spring cylinder 13, providing support force to the support spring. When the valve core rod 5 moves downward, the valve core rod 5 compresses the support spring through the spring baffle 4, causing it to store elastic force.

[0031] The working principle of the device is as follows: When the glue tube is installed on the connecting cylinder 11, and the air intake device is connected to the air intake cover 2, when glue needs to be applied, the air intake device first uses compressed air to enter the inner cavity of the air intake cylinder 12 through the air intake hole 21. At this time, the compressed air pushes the sealing cover 52 to move downward, causing the sealing cover 52 to drive the valve core rod 5 to move downward. At the same time, the valve core rod 5 moves downward and also squeezes the telescopic spring through the spring baffle 4. When the connecting cylinder 11, the glue outlet 51 and the glue nozzle 14 are in a straight line, the sealant is sprayed out through the glue nozzle 14. After the sealant is applied, compressed air is discharged through the air inlet 21. At this time, the telescopic spring releases its elasticity and drives the valve core rod 5 to move upward back to its original position. At this time, the connecting cylinder 11, the dispensing hole 51, and the nozzle 14 are not on the same horizontal line. Subsequently, the sealant is blocked by the valve core rod 5 and cannot be discharged through the nozzle 14. This avoids the problem that the nozzle 14 cannot stop quickly after the sealant itself is depressurized due to its elasticity, which would cause the sealant to continue to overflow in small amounts, causing pollution at the construction site and making it difficult to clean.

[0032] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An anti-overflow pneumatic nozzle with a valve, characterized in that, include: The nozzle (1) has a connecting cylinder (11) connected to the glue cartridge on one side and a glue nozzle (14) capable of dispensing glue on the other side. The nozzle (1) has an air inlet cylinder (12) at the top and a spring cylinder (13) at the bottom. The air inlet cylinder (12) has an air inlet cover (2) on its surface and a spring chamber cover (3) on its surface. The top of the air inlet cover (2) is provided with an air inlet hole (21), the nozzle (1) is provided with a valve core rod assembly, the inside of the spring chamber cover (3) is provided with a spring baffle (4) slidably, a support spring is provided between the bottom of the spring baffle (4) and the inner wall of the spring chamber cover (3), and the top of the spring baffle (4) is in contact with the bottom of the valve core rod assembly.

2. The anti-overflow pneumatic nozzle with valve according to claim 1, characterized in that, The surface of the air inlet cylinder (12) is provided with an upper thread, and the air inlet cover (2) is connected to the air inlet cover (2) through the upper thread.

3. The anti-overflow pneumatic nozzle with valve according to claim 1, characterized in that, The valve core rod assembly includes a valve core rod (5) disposed inside the nozzle (1). The surface of the valve core rod (5) is transversely provided with a dispensing hole (51) that communicates with the nozzle (14). A sealing cover (52) is fixedly installed on the top of the valve core rod (5). A rubber ring that contacts the inner wall of the air inlet cylinder (12) is provided on the surface of the sealing cover (52). When the connecting cylinder (11), the glue outlet (51) and the glue nozzle (14) are on the same horizontal line, the sealant can pass through the connecting cylinder (11), the glue outlet (51) and the glue nozzle (14) in sequence, and then be discharged through the glue nozzle (14); When the connecting cylinder (11), the glue outlet (51) and the glue nozzle (14) are not on the same horizontal line, the sealant cannot be discharged through the glue nozzle (14).

4. The anti-overflow pneumatic nozzle with valve according to claim 1, characterized in that, The diameter of the spring compartment cover (3) is larger than the diameter of the spring cylinder (13). The surface of the spring cylinder (13) is provided with a downward thread, and the spring compartment cover (3) is connected to the spring cylinder (13) through the downward thread.

5. The anti-overflow pneumatic nozzle with valve according to claim 1, characterized in that, The diameter of the spring baffle (4) is smaller than the diameter of the spring cylinder (13), and the surface of the spring baffle (4) is provided with a sealing ring that contacts the inner wall of the spring cylinder (13).

6. The anti-overflow pneumatic nozzle with valve according to claim 3, characterized in that, The diameter of the valve core rod (5) is smaller than the diameter of the sealing cover (52), and the diameter of the sealing cover (52) is smaller than the diameter of the air inlet cylinder (12).

7. The anti-overflow pneumatic nozzle with valve according to claim 3, characterized in that, The length of the valve core rod (5) is less than the length of the nozzle (1).

8. The anti-overflow pneumatic nozzle with valve according to claim 1, characterized in that, The nozzle (14) adopts an ultra-short design.

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