Disposable paper solid propellant charging and degassing tool

Abstract

The utility model relates to the technical field of propellant cleaning, and particularly discloses a disposable paper solid propellant charging and degassing tool. The disposable paper solid propellant charging and degassing tool comprises a slurry collecting device, a sealing gasket, a disposable paper degassing plate and a fastening pressing plate. When in use, the cleaning-free pouring degassing tool for charging the solid propellant is arranged in a closed pouring cylinder, the pouring cylinder provides a vacuum environment, the propellant slurry flows into the disposable paper degassing plate through the propellant slurry collecting device and is formed and degassed in the degassing holes, and then the formed propellant enters an engine shell through the fastening pressing plate. After the operation is completed, the disposable paper degassing plate is detached and then sent to a waste propellant warehouse to be destroyed together with waste propellant slurry. According to the utility model, the paper degassing plate can be directly destroyed after the propellant is charged, so that the manual tool cleaning operation is eliminated, the labor intensity is reduced, the intrinsic safety degree is improved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of propellant cleaning, and specifically discloses a disposable paper solid propellant charge degassing tool. Background Art

[0002] Solid propellant is a multiphase material composite system composed of polymer adhesives, oxidizers, nitramine explosives, fuel additives, plasticizers, curing agents, etc. During the casting process of solid propellant preparation, the solid propellant slurry exhibits complex rheological mechanical properties and easily adheres to the surface of tooling, causing contamination of parts and tooling surfaces. At the same time, as an energetic material, it is at risk of ignition and deflagration when subjected to external stimuli such as impact, friction, and static electricity. In the production and manufacturing process of solid propellants, the treatment of materials adhering to the surfaces of containers, tooling, and parts is an important technical means to ensure the operating performance and reliability of the equipment, and is also a necessity for the development of solid propellant manufacturing.

[0003] Currently, degassing tooling for composite solid propellant charges is primarily made of metals such as brass and stainless steel. After loading, personnel must clean the tooling on-site using chemical solvents. During this cleaning process, residual propellant on the tooling can combust due to external factors such as impact, friction, and static electricity, creating a dangerous process prone to accidents. Furthermore, manual on-site cleaning using chemical solvents poses challenges such as high labor intensity, low cleaning efficiency, and poor environmental performance.

[0004] Therefore, it is urgent to develop a disposable paper solid propellant charge degassing tool to solve the above technical problems. Utility Model Content

[0005] The utility model is achieved through the following technical solutions:

[0006] A disposable paper solid propellant charge degassing tool, comprising a slurry collecting device 1, a sealing gasket 2, a disposable paper degassing plate 3 and a fastening pressing plate 4;

[0007] The slurry collecting device 1 is funnel-shaped, with the small end of the funnel pointing upward and the large end pointing downward, and a connecting ring extending around the large end;

[0008] The disposable paper degassing plate 3 is a wood pulp paperboard; the disposable paper degassing plate 3 is provided with a plurality of strip-shaped degassing holes;

[0009] The sealing gasket 2 connects the large-mouth connection ring of the slurry collecting device 1 to the disposable paper degassing plate 3 and seals the interface all around.

[0010] The fastening plate 4 is a metal ring, which is located below the disposable paper degassing plate 3, and the metal ring of the fastening plate 4 does not cover the degassing holes on the disposable paper degassing plate 3;

[0011] The connecting ring of the slurry collecting device 1, the sealing gasket 2, the disposable paper degassing plate 3 and the fastening pressing plate 4 are provided with through holes running through the upper and lower parts at the same vertical position; the fixed connecting device connects and fixes the slurry collecting device 1, the sealing gasket 2, the disposable paper degassing plate 3 and the fastening pressing plate 4 through the through holes.

[0012] Preferably, the thickness of the disposable paper degassing board 3 is 3mm-5mm, and the cardboard body tightness is ≥1.1g / cm 3 , transverse tensile strength ≥45KN / m, moisture content is 10.0%±2.0%.

[0013] Preferably, the sealing gasket 2 is a rubber ring for sealing the edge.

[0014] Preferably, the degassing holes are strip-shaped holes with a width of 5 mm and a length of 10 mm to 20 mm.

[0015] Furthermore, the degassing holes are distributed in a circular, semicircular, fan-shaped or rectangular cluster pattern.

[0016] Furthermore, the radial spacing and circumferential spacing of the degassing holes are 3mm-6mm.

[0017] Preferably, the fixing connection device is a bolt and nut structure device, through which the slurry collecting device 1, the sealing gasket 2, the disposable paper degassing plate 3 and the fastening pressing plate 4 are connected and fixed.

[0018] Preferably, the number of the through holes is eight, which are evenly distributed on the periphery of the slurry collecting device 1 , the sealing gasket 2 , the disposable paper degassing plate 3 and the fastening pressing plate 4 .

[0019] Preferably, the small-mouth end of the funnel of the slurry collecting device 1 is connected to the slurry source port.

[0020] Preferably, the solid propellant charge cleaning-free pouring and degassing device is placed in a closed pouring cylinder, which provides a vacuum environment; and the fastening pressure plate 4 is connected to the upper end of the engine housing.

[0021] The disposable paper degassing plate 3 is made of wood pulp and cardboard, which does not react with components such as polymer binders, plasticizers, and curing agents in solid propellant formulations. It is suitable for solid propellant charges of various formulations. After removal, the disposable paper degassing plate 3 can be sent to a waste storage facility for disposal along with the spent propellant slurry, eliminating the safety hazards of on-site manual cleanup and reducing the workload for operators.

[0022] The beneficial effects of the present invention are as follows:

[0023] The disposable paper solid propellant charge degassing tool provided by the utility model can directly destroy the paper degassing plate after the propellant is charged, eliminate the manual cleaning tooling operation, reduce labor intensity, improve the inherent safety level, and enhance production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the disposable paper solid propellant charge degassing tooling of the utility model;

[0025] Figure 2 This is a schematic diagram of the degassing hole distribution of the disposable paper degassing plate of the utility model;

[0026] (a) Semicircular distribution; (b) Fan-shaped distribution; (c) Circular distribution; (d) Rectangular cluster distribution. DETAILED DESCRIPTION

[0027] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the following is a further description with reference to the accompanying drawings and embodiments. It should be understood that the embodiments are only used to illustrate the technical effects of the present invention and are not intended to limit the scope of protection of the present invention.

[0028] Example 1

[0029] A disposable paper solid propellant charge degassing tool, comprising a slurry collecting device 1, a sealing gasket 2, a disposable paper degassing plate 3 and a fastening pressing plate 4;

[0030] The slurry collecting device 1 is funnel-shaped, with the small end of the funnel pointing upward and the large end pointing downward, and a connecting ring extending around the large end;

[0031] The disposable paper degassing plate 3 is made of wood pulp paperboard; the disposable paper degassing plate 3 is provided with a plurality of strip-shaped degassing holes; the degassing holes are strip-shaped holes with a width of 5 mm and a length of 10 mm; the radial and circumferential spacing of the degassing holes is 5 mm;

[0032] The sealing gasket 2 connects the large-mouth connection ring of the slurry collecting device 1 to the disposable paper degassing plate 3 and seals the interface all around.

[0033] The fastening plate 4 is a metal ring, which is located below the disposable paper degassing plate 3, and the metal ring of the fastening plate 4 does not cover the degassing holes on the disposable paper degassing plate 3;

[0034] The connecting ring of the slurry collecting device 1, the sealing gasket 2, the disposable paper degassing plate 3 and the fastening pressure plate 4 are provided with through holes running through the upper and lower parts at the same vertical position; the fixed connection device connects and fixes the slurry collecting device 1, the sealing gasket 2, the disposable paper degassing plate 3 and the fastening pressure plate 4 through the through holes; the fixed connection device is a bolt and nut structure device, which connects and fixes the slurry collecting device 1, the sealing gasket 2, the disposable paper degassing plate 3 and the fastening pressure plate 4 through the bolt and nut structure device; there are eight through holes, which are evenly distributed on the periphery of the slurry collecting device 1, the sealing gasket 2, the disposable paper degassing plate 3 and the fastening pressure plate 4.

[0035] The thickness of the disposable paper degassing board 3 is 5 mm, and the cardboard body density is 1.2 g / cm 3 , transverse tensile strength 50KN / m, moisture content is 10.0%.

[0036] The sealing gasket 2 is a rubber ring that seals the edge; the small-mouth end of the funnel of the slurry collecting device 1 is connected to the slurry source port.

[0037] During use, the clean-free pouring and degassing process for solid propellant charge is installed in a closed pouring cylinder, which provides a vacuum environment. The slurry flows through the slurry collection device 1 and into the disposable paper degassing plate 3, where it is formed and degassed in the degassing holes. The formed propellant then enters the engine housing through the fastening plate 4. After the operation is completed, the disposable paper degassing plate 3 is removed and sent to the waste storage for destruction along with the waste propellant slurry.

Claims

1. A disposable paper solid propellant charge degassing tool, characterized in that: It comprises a medicine slurry collecting device (1), a sealing gasket (2), a disposable paper degassing plate (3) and a fastening pressing plate (4); The slurry collecting device (1) is funnel-shaped, with a small opening facing upwards and a large opening facing downwards, and a connecting ring extending around the large opening; The disposable paper degassing plate (3) is a wood pulp paperboard; the disposable paper degassing plate (3) is provided with a plurality of penetrating strip-shaped degassing holes; The sealing gasket (2) connects the large-mouth end connecting ring of the slurry collecting device (1) to the disposable paper degassing plate (3), and seals the interface all around; The fastening plate (4) is a metal ring, which is located below the disposable paper degassing plate (3), and the metal ring of the fastening plate (4) does not cover the degassing holes on the disposable paper degassing plate (3); A through hole extending vertically therethrough is provided at the same vertical position on the connecting ring of the medicine slurry collecting device (1), the sealing gasket (2), the disposable paper degassing plate (3) and the fastening pressing plate (4); and the fixed connecting device connects and fixes the medicine slurry collecting device (1), the sealing gasket (2), the disposable paper degassing plate (3) and the fastening pressing plate (4) via the through hole.

2. The disposable paper solid propellant charge degassing tool according to claim 1, characterized in that: The thickness of the disposable paper degassing board (3) is 3mm-5mm, and the cardboard body tightness is ≥1.1g / cm 3 , transverse tensile strength ≥45KN / m, moisture content is 10.0%±2.0%.

3. The disposable paper solid propellant charge degassing tool according to claim 1, characterized in that: The sealing gasket (2) is a rubber ring that seals the edge.

4. The disposable paper solid propellant charge degassing tool according to claim 1, characterized in that: The degassing holes are strip-shaped holes with a width of 5 mm and a length of 10 mm to 20 mm.

5. The disposable paper solid propellant charge degassing tool according to claim 4, characterized in that: The degassing holes may be distributed in a circular, semicircular, fan-shaped or rectangular clustered manner.

6. The disposable paper solid propellant charge degassing tool according to claim 4, characterized in that: The radial spacing and circumferential spacing of the degassing holes are 3mm-6mm.

7. The disposable paper solid propellant charge degassing tool according to claim 1, characterized in that: The fixed connection device is a bolt and nut structure device, through which the slurry collecting device (1), the sealing gasket (2), the disposable paper degassing plate (3) and the fastening pressing plate (4) are connected and fixed.

8. The disposable paper solid propellant charge degassing tool according to claim 1, characterized in that: There are eight through holes, which are evenly distributed on the peripheries of the medicine slurry collecting device (1), the sealing gasket (2), the disposable paper degassing plate (3) and the fastening pressing plate (4).

9. The disposable paper solid propellant charge degassing tool according to claim 1, characterized in that: The small-mouth end of the funnel of the medicine slurry collecting device (1) is connected to the medicine slurry source port.

10. The disposable paper solid propellant charge degassing tool according to claim 1, characterized in that: The solid propellant charge cleaning-free pouring and degassing device is placed in a closed pouring cylinder, which provides a vacuum environment; and a fastening pressure plate (4) is connected to the upper end of the engine housing.

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