Sealing structure of single-base propellant powder production equipment

Abstract

The utility model relates to the field of propellant powder manufacturing equipment, in particular to a sealing structure of single-base propellant powder production equipment, which reduces poor sealing effect caused by deformation of a lower sealing plate of a folding mechanism and an upper sealing plate of a discharging hopper and further ensures continuous and reliable sealing effect. Comprising a folding mechanism lower sealing plate and a discharging hopper upper sealing plate arranged below the folding mechanism lower sealing plate, a sealing gap is formed between the folding mechanism lower sealing plate and the discharging hopper upper sealing plate, and a sealing structure is arranged in the sealing gap and comprises a sealing frame arranged in the extending direction of the sealing gap. An upper sealing gasket is arranged above the sealing frame, a lower sealing gasket is arranged below the sealing frame, and the upper sealing gasket and the lower sealing gasket are fixedly arranged on the sealing frame. The sealing device is particularly suitable for a sealing process between a lower sealing plate of a multifunctional tank folding mechanism and an upper sealing plate of a discharging hopper of single-base propellant powder production equipment.

Description

Technical Field

[0001] This utility model relates to the field of propellant manufacturing equipment, and in particular to a sealing structure for a single-base propellant production equipment. Background Technology

[0002] In the manufacturing process of single-base propellants, a sealing gap exists between the lower sealing plate of the multi-functional canister folding mechanism and the upper sealing plate of the discharge hopper, which needs to be sealed. The original sealing structure was relatively simple, merely placing a single-layer sealing gasket within the sealing gap. This sealing method has the following problems: First, under high temperature and tightening pressure, the sealing gasket is prone to aging and seal failure, leading to leakage. Second, the sheet metal surfaces of the lower sealing plate of the folding mechanism and the upper sealing plate of the discharge hopper are thin, typically only 3mm thick. Therefore, both the lower sealing plate of the folding mechanism and the upper sealing plate of the discharge hopper are prone to deformation during use, resulting in inconsistent gaps between them. This leads to uneven gasket compression and a tendency for leakage. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a sealing structure for a single-base propellant production equipment that reduces the poor sealing effect caused by the deformation of the lower sealing plate of the folding mechanism and the upper sealing plate of the discharge hopper, thereby ensuring a continuous and reliable sealing effect.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a sealing structure of a single-base propellant production equipment, including a lower sealing plate of a folding mechanism and an upper sealing plate of a discharge hopper disposed below the lower sealing plate of the folding mechanism, a sealing gap being provided between the lower sealing plate of the folding mechanism and the upper sealing plate of the discharge hopper, a sealing structure being provided within the sealing gap, the sealing structure including a sealing frame disposed along the extension direction of the sealing gap, an upper sealing gasket being disposed above the sealing frame, a lower sealing gasket being disposed below the sealing frame, and the upper and lower sealing gaskets being fixedly disposed on the sealing frame.

[0005] Furthermore, the sealing frame is a 304 stainless steel plate.

[0006] Furthermore, the upper and lower sealing gaskets are fixedly mounted on the sealing frame by connecting bolts.

[0007] Furthermore, the upper surface of the sealing frame is uniformly provided with locking steps, and the bottom surface of the upper sealing gasket is uniformly provided with upper sealing gasket grooves that match the locking steps on the upper surface of the sealing frame. The connecting bolts are located between two adjacent locking steps.

[0008] Furthermore, the lower surface of the sealing frame is uniformly provided with locking steps, and the top surface of the lower sealing gasket is uniformly provided with lower sealing gasket grooves that match the locking steps on the lower surface of the sealing frame. The connecting bolts are located between two adjacent locking steps.

[0009] Furthermore, both the upper and lower sealing gaskets are made of polytetrafluoroethylene (PTFE).

[0010] The beneficial effects of this utility model are as follows: In actual use, the presence of the sealing frame provides a supporting base plane for the upper and lower sealing gaskets. During subsequent use, even if the lower sealing plate of the folding mechanism or the upper sealing plate of the discharge hopper deforms, the sealing frame, being positioned in the middle and not deformed, effectively reduces sealing defects caused by deformation of the lower sealing plate or the upper sealing plate of the discharge hopper. Even if deformation occurs, the sealing frame remains undeformed, effectively preventing excessive gaps and poor sealing caused by simultaneous deformation on both sides of the sealing gasket. This effectively improves the service life and sealing effect of the sealing structure. This utility model is particularly suitable for the sealing process between the lower sealing plate of the folding mechanism and the upper sealing plate of the discharge hopper in multi-functional cans of single-base propellant production equipment. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of one embodiment of the present invention.

[0012] The following are marked in the diagram: lower sealing plate of the folding mechanism 1, upper sealing plate of the discharge hopper 2, sealing frame 3, locking step 31, upper sealing gasket 4, lower sealing gasket 5. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] like Figure 1 The sealing structure of the single-base propellant production equipment shown includes an upper sealing gasket 4, a sealing frame 3, and a lower sealing gasket 5 between the lower sealing plate 1 of the folding mechanism and the upper sealing plate 2 of the discharge hopper. The gap between the lower sealing plate 1 of the folding mechanism and the upper sealing plate 2 of the discharge hopper extends horizontally, and the sealing frame 3 also extends horizontally, thus providing a foundation for supporting the force. The upper sealing gasket 4 is placed between the sealing frame 3 and the lower sealing plate 1 of the folding mechanism, and the lower sealing gasket 5 is placed between the sealing frame 3 and the upper sealing plate 2 of the discharge hopper.

[0015] Figure 1In this design, the sealing frame 3 is a 304 stainless steel plate, preferably 20mm thick, to ensure that it is not easily deformed, thus providing reliable support for the upper and lower sealing gaskets. The upper sealing gasket 4 and lower sealing gasket 5 are made of polytetrafluoroethylene (PTFE). The upper sealing gasket 4 and lower sealing gasket 5 are fixed to the sealing frame 3 by connecting bolts. To reduce horizontal relative sliding between the upper sealing gasket 4 and the upper surface of the sealing frame 3, the upper surface of the sealing frame 3 preferably has uniformly distributed locking steps 31, and the bottom surface of the upper sealing gasket 4 has uniformly distributed upper sealing gasket grooves that match the locking steps 31 on the upper surface of the sealing frame 3. Connecting bolts are positioned between two adjacent locking steps 31. The upper sealing gasket grooves engage with the locking steps 31 to lock the upper sealing gasket 4, preventing lateral sliding. Similarly, locking steps 31 are uniformly provided on the lower surface of the sealing frame 3, and lower sealing gasket 5 is uniformly provided with lower sealing gasket grooves that match the locking steps 31 on the lower surface of the sealing frame 3. Connecting bolts are provided between two adjacent locking steps 31 to prevent the lower sealing gasket 5 from sliding laterally.

[0016] The upper sealing gasket 4 and the lower sealing gasket 5 are fixed to the sealing frame 3 by connecting bolts. In order to prevent the connecting bolts from excessively compressing the sealing gaskets and causing them to be damaged, the connecting bolts can be positioned between the locking steps 31. That is, the connecting bolts fix the portions between two adjacent upper sealing gasket grooves and between two adjacent lower sealing gasket grooves. Because the portions between two upper sealing gasket grooves and between two adjacent lower sealing gasket grooves are thicker, it can effectively prevent excessive compression that could damage the sealing gaskets, thereby ensuring the sealing effect, improving high temperature resistance and aging resistance, and solving the problem of easy leakage.

Claims

1. The sealing structure of single-base propellant production equipment, comprising a folding mechanism lower sealing plate (1) and a discharge hopper upper sealing plate (2) arranged below the folding mechanism lower sealing plate (1), a sealing gap is arranged between the folding mechanism lower sealing plate (1) and the discharge hopper upper sealing plate (2), and a sealing structure is arranged in the sealing gap, characterized in that: The sealing structure includes a sealing frame (3) arranged along the extension direction of the sealing gap. An upper sealing gasket (4) is arranged above the sealing frame (3), and a lower sealing gasket (5) is arranged below the sealing frame (3). The upper sealing gasket (4) and the lower sealing gasket (5) are fixedly arranged on the sealing frame (3). ​ 2. The sealing structure of the single-base propellant production equipment as described in claim 1, characterized in that: The sealing frame (3) is a 304 stainless steel plate.

3. The sealing structure of the single-base propellant production equipment as described in claim 2, characterized in that: The upper sealing gasket (4) and the lower sealing gasket (5) are fixedly mounted on the sealing frame (3) by connecting bolts.

4. The sealing structure of the single-base propellant production equipment as described in claim 3, characterized in that: The upper surface of the sealing frame (3) is uniformly provided with locking steps (31), and the bottom surface of the upper sealing gasket (4) is uniformly provided with upper sealing gasket grooves that match the locking steps (31) on the upper surface of the sealing frame (3). The connecting bolts are located between two adjacent locking steps (31).

5. The sealing structure of the single-base propellant production equipment as described in claim 4, characterized in that: The lower surface of the sealing frame (3) is uniformly provided with locking steps (31), and the top surface of the lower sealing gasket (5) is uniformly provided with lower sealing gasket grooves that match the locking steps (31) on the lower surface of the sealing frame (3). The connecting bolts are located between two adjacent locking steps (31).

6. The sealing structure of the single-base propellant production equipment as described in any one of claims 1 to 5, characterized in that: The upper sealing gasket (4) and the lower sealing gasket (5) are polytetrafluoroethylene (PTFE) sealing gaskets.

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