Closed flow guide type sniper rifle silencer
By using a multi-stage decompression and simple structural design in a closed-circuit sniper rifle suppressor, the problems of insignificant noise reduction effect and high production difficulty of suppressors have been solved, achieving better noise reduction effect and processing efficiency.
Patent Information
- Application Number
- CN202520430056.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Existing gun silencers have insignificant noise reduction effects and are difficult to manufacture. Their internal structure design cannot effectively control the gas discharge speed and expansion process, and the complexity of processing increases production costs and time.
It adopts a closed flow-guiding structure, and closes the valve by moving the moving parts through multi-stage pressure reduction and gas. The gas is discharged from multiple exhaust holes along the set exhaust route, which reduces the gas discharge speed and expansion speed. Combined with the simple internal structure, it is easy to process.
It achieves better noise reduction and simplifies the processing, reducing processing costs and production cycle, making it suitable for large-scale production.
Smart Images
Figure CN223741332U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of military equipment technology, specifically to a closed-circuit sniper rifle silencer. Background Technology
[0002] Currently, domestically produced gun suppressors face several challenges in design and manufacturing, primarily in their unsatisfactory silencing effect. While existing suppressors can partially reduce firing noise, this effect is not significant and often fails to achieve the desired concealment. This is mainly attributed to their internal structural design's inability to effectively regulate the exhaust velocity and expansion process of the combustion gases, thus limiting improvements in silencing performance.
[0003] Another significant problem lies in the complexity of the internal structure, which leads to increased processing difficulty and reduced production efficiency. Traditional mufflers typically contain multiple delicate components, the manufacture of which requires high-precision processes. This not only increases processing costs but also easily leads to extended production cycles due to the complexity of the manufacturing process, hindering large-scale production and rapid response to market demands. Utility Model Content
[0004] Therefore, this application provides a closed-circuit sniper rifle suppressor to solve the problems of insignificant silencing effect and high production difficulty in the prior art.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] A closed-loop sniper rifle suppressor includes a housing with multiple first exhaust holes on the side wall of the housing; the housing contains a muzzle connector, a gas distribution chamber, a decompression chamber, and a plug.
[0007] The pressure relief chamber is closely attached to the outer shell and coaxial with the outer shell, and neither the front nor rear ends of the pressure relief chamber extend beyond the front and rear end faces of the outer shell; multiple second exhaust holes are provided on the side wall of the pressure relief chamber.
[0008] The gas distribution chamber is coaxially fixed inside the pressure reduction chamber, and multiple third exhaust holes are provided on the side wall;
[0009] The muzzle connector is installed at the front end of the housing and its end extends into the gas distribution chamber for connecting the muzzle; the muzzle connector has a plurality of fourth exhaust holes arranged circumferentially, one end of each fourth exhaust hole passes through the rear end face of the muzzle connector, and the other end passes through the side face of the muzzle connector and is connected to the housing.
[0010] The plug is installed at the rear end of the housing, and the front end of the plug extends into the gas distribution chamber; the front end of the plug is provided with a valve for closing its own opening, and the gas distribution chamber is provided with a movable part for opening and closing the valve.
[0011] Optionally, the valve is rotatably connected to the plug, and a coil spring for limiting valve closure is provided between the valve's rotating shaft and the plug; when the coil spring is in its free state, the valve is in the open state, and the opening direction is forward.
[0012] Optionally, when the coil spring is in a free state, the opening angle of the valve is less than 90°.
[0013] Optionally, the gas distribution chamber includes a first pipe fitting, a second pipe fitting, a movable component, and a fixed component; the first pipe fitting and the second pipe fitting are coaxially and fixedly connected, with the first pipe fitting located in front of the second pipe fitting; the fixed component is fixedly installed inside the first pipe fitting, and the diameter of the front end of the fixed component is smaller than the diameter of the rear end, for reducing the pressure of the gas;
[0014] The movable component can slide back and forth axially within the second pipe, and a return spring is provided between the movable component and the inner wall of the second pipe to give the movable component a forward movement tendency.
[0015] Optionally, at least two fasteners are provided along the axial direction.
[0016] Optionally, the movable component includes a core and a kit; the diameter of the front end of the core is smaller than the diameter of the rear end, for reducing the pressure of the gas; the kit is fitted onto the outer wall of the rear end of the core and is fixedly connected to the core.
[0017] Optionally, the first exhaust port, the second exhaust port, and the third exhaust port are arranged in a staggered manner.
[0018] Optionally, both the front and rear end faces of the outer casing are provided with internal teeth protruding from the inner wall of the outer casing.
[0019] Optionally, the muzzle connector is composed of three coaxial rings with different outer diameters connected and fixed to each other. The outer diameters of the three rings decrease sequentially from front to back, and include a primary ring, a secondary ring, and a tertiary ring respectively. The primary ring is used to dock with the muzzle, extends into the outer casing, and abuts against the front end of the decompression chamber. The secondary ring extends into the decompression chamber and abuts against the front end of the gas distribution chamber. The tertiary ring extends into the gas distribution chamber.
[0020] Optionally, the plug includes a positioning part and a sealing part that are fixed to each other and have different outer diameters; the positioning part is embedded in the rear end of the outer shell, and a positioning groove is formed on the front end face of the positioning part, and the rear ends of the pressure reducing chamber and the gas distribution chamber are both inserted into the positioning groove; the sealing part extends into the gas distribution chamber, and the valve is installed on the sealing part.
[0021] Compared with the prior art, this application has at least the following beneficial effects:
[0022] The gas is used to move the moving parts to rotate the valve, close the passage at the plug, and use multi-stage pressure reduction to force the gas to be discharged from the first exhaust port, the second exhaust port and the third exhaust port according to the set exhaust route. This reduces the exhaust speed and expansion speed of the gas, thereby reducing the sonic boom and achieving a better noise reduction effect.
[0023] In addition, the internal structure of this application is simple and easy to process, which greatly improves processing efficiency, reduces processing costs, and eliminates the need for CNC or 3D printing. Attached Figure Description
[0024] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).
[0025] Figure 1 A schematic diagram of a closed-circuit sniper rifle suppressor provided in this application embodiment;
[0026] Figure 2 This is a schematic diagram of the outer shell structure in an embodiment of this application;
[0027] Figure 3 This is a schematic diagram of the decompression chamber in an embodiment of this application;
[0028] Figure 4 This is a schematic diagram of the gas distribution chamber in an embodiment of this application;
[0029] Figure 5 This is an explosion diagram of the gas distribution chamber in an embodiment of this application;
[0030] Figure 6 for Figure 5 Cross-sectional views of the first and second pipe fittings;
[0031] Figure 7 for Figure 5 Structural diagram of the moving parts;
[0032] Figure 8 for Figure 5 Top view of the moving part;
[0033] Figure 9 This is a schematic diagram of the muzzle connector in an embodiment of this application;
[0034] Figure 10 for Figure 9 Cross-sectional view of the muzzle connector;
[0035] Figure 11 This is a schematic diagram of the plug structure in an embodiment of this application;
[0036] Figure 12 for Figure 11 Top view of the middle plug.
[0037] Explanation of reference numerals in the attached figures:
[0038] 1. Outer shell; 2. First internal thread; 3. Second internal thread; 4. Muzzle connector; 5. Gas distribution chamber; 6. Pressure reduction chamber; 7. Plug; 8. First spacer ring; 9. First fitting; 10. Second fitting; 11. Moving part; 12. Fixing part; 13. Second spacer ring; 14. Core tube; 15. Kit; 16. Fourth vent; 17. Valve; 18. Positioning part; 19. Sealing part; 20. Positioning groove; 21. Fifth vent. Detailed Implementation
[0039] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0040] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).
[0041] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to indicate the general relative positional relationship for the purpose of intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product.
[0042] A closed-loop sniper rifle suppressor, comprising a hollow tubular structure. (See reference) Figures 1-2 The muffler includes a housing 1, which is a smooth cylindrical tube with smooth inner and outer walls. Multiple first exhaust holes are formed on the side walls of the cylindrical tube. Internal threads protruding from the inner wall of the housing 1 are provided on both the front and rear end faces of the housing 1. The internal thread at the front end is the first internal thread 2, and the internal thread at the rear end is the second internal thread 3. In this embodiment, the housing 1 has a length of 225 mm, an outer diameter of 48 mm, and an inner diameter of 46 mm; the first internal thread 2 protrudes 0.5 mm from the inner wall of the housing 1 and is 10 mm long; the second internal thread 3 protrudes 3 mm from the inner wall of the housing 1 and is 2 mm long.
[0043] The outer casing 1 is equipped with a nozzle connector 4, a gas distribution chamber 5, a pressure reducing chamber 6, and a plug 7 to perform multi-stage pressure reduction on the gas.
[0044] Reference Figure 3 Specifically, the pressure-reducing chamber 6 is a tubular structure with a smooth inner wall, and multiple second exhaust holes are provided on it. Multiple first spacer rings 8 are axially spaced on the outer wall of the pressure-reducing chamber 6. The end walls of the first spacer rings 8 are tightly attached to the inner wall of the outer shell 1, serving to separate the side walls of the pressure-reducing chamber 6 from the outer shell 1, leaving a gap between them for the gas to pass through. This gap constitutes a three-stage gas chamber for the gas. The pressure-reducing chamber 6 is coaxially arranged with the outer shell 1, its length is less than the length of the outer shell 1, and neither its front nor rear end faces exceed the front and rear end faces of the outer shell 1.
[0045] In this embodiment, the decompression chamber 6 has a length of 210mm, an outer diameter of 37mm, and an inner diameter of 34mm; the height of each first spacer ring 8 is 2mm, the distance between the foremost first spacer ring 8 and the front end face of the decompression chamber 6 is 35mm, and the distance between the last first spacer ring 8 and the rear end face of the decompression chamber 6 is 33mm; the outer diameter of each first spacer ring 8 is 44.95mm.
[0046] Reference Figures 4-6 The gas distribution chamber 5 is coaxially fixed inside the pressure reducing chamber 6 and includes a first pipe fitting 9, a second pipe fitting 10, a movable part 11, and a fixed part 12. The first pipe fitting 9 and the second pipe fitting 10 are each composed of two pipe fittings of different sizes, and are coaxially fitted and fixed, with the first pipe fitting 9 positioned in front of the second pipe fitting 10. Second spacer rings 13 are coaxially spaced along the outer walls of both the first pipe fitting 9 and the second pipe fitting 10, with their end walls tightly against the inner wall of the pressure reducing chamber 6. These spacer rings separate the side walls of the first pipe fitting 9 and the second pipe fitting 10 from the pressure reducing chamber 6, creating a gap for the gas to pass through; this gap is the secondary gas chamber. In addition, multiple third exhaust holes are provided on the side walls of the first pipe fitting 9 and the second pipe fitting 10, and the interiors of the first pipe fitting 9 and the second pipe fitting 10 are the primary gas chambers.
[0047] The fixing member 12 is fixedly installed inside the first pipe fitting 9, and the diameter of the front end of the fixing member 12 is smaller than the diameter of the rear end, for the purpose of reducing gas pressure. In this embodiment, two fixing members 12 are provided, which are distributed axially at intervals inside the first pipe fitting 9, thereby playing a role in multi-stage pressure reduction.
[0048] Reference Figures 7-8 The movable component 11 can slide axially back and forth within the second pipe fitting 10. A return spring (1mm thick, 24mm in diameter) is provided between the movable component 11 and the inner wall of the second pipe fitting 10 to give the movable component 11 a forward tendency. Specifically, the movable component 11 includes a core 14 and a sleeve 15. The diameter of the front end of the core 14 is smaller than that of the rear end, which is used to reduce the pressure of the gas. The sleeve 15 is fitted onto the outer wall of the rear end of the core 14 and is fixedly connected to the core 14.
[0049] In this embodiment, the total length of the first pipe fitting 9 is 100 mm, and the total length of the second pipe fitting 10 is 105 mm. The front end of the second pipe fitting 10 is embedded in the first pipe fitting 9, and after fitting, the total length of the air distribution chamber 5 is 200.69 mm. The height of the second spacer ring 13 is 2 mm, and the outer diameter is 34 mm. The length of the fixing member 12 is 20 mm, the inner diameter of the front end is 9 mm, the inner diameter of the rear end is 19 mm, and the outer diameter is 22 mm. The total length of the movable member 11 is 55 mm.
[0050] Furthermore, the first exhaust port, the second exhaust port, and the third exhaust port are arranged in a staggered manner.
[0051] Reference Figures 9-10 The muzzle connector 4 is installed at the front end of the outer casing 1, with its end extending into the gas distribution chamber 5, for connecting the muzzle. The muzzle connector 4 consists of three coaxial rings with different outer diameters connected and fixed to each other. The outer diameters of the three rings decrease sequentially from front to back, including a primary ring, a secondary ring, and a tertiary ring. The primary ring is used to mate with the muzzle, extending into the first internal thread 2 inside the outer casing 1 and abutting against the front end of the pressure reducing chamber 6; the secondary ring extends into the pressure reducing chamber 6 and abuts against the front end of the gas distribution chamber 5; the tertiary ring extends into the gas distribution chamber 5. In addition, the muzzle connector 4 has multiple fourth exhaust holes 16 arranged circumferentially. One end of each fourth exhaust hole 16 faces radially toward the inside of the outer casing 1 (i.e., inside the tertiary gas chamber), and the other end faces axially toward the inside of the gas distribution chamber 5 (i.e., inside the primary gas chamber). When the gas enters the gas distribution chamber 5, some of the gas is blocked by the fixing member 12, enters forward into the fourth exhaust hole 16, and enters the tertiary gas chamber along the fourth exhaust hole 16, and is discharged from the first exhaust hole.
[0052] In this embodiment, the length of the primary, secondary, and tertiary rings is 10 mm, and the inner diameter is 20 mm. The outer diameter of the primary ring is 46 mm, the secondary ring is 35 mm, and the tertiary ring is 28 mm. The fourth exhaust holes 16 are evenly distributed circumferentially in an axisymmetric structure, with a distance of 23 mm between the bends of two opposite fourth exhaust holes 16, and a diameter of 1.2 mm.
[0053] Reference Figure 11 and Figure 12The plug 7 is installed at the rear end of the outer casing 1, and it is also provided with multiple fifth exhaust holes 21. The front end of the plug 7 extends into the air distribution chamber 5. The front end of the plug 7 is provided with a valve 17 for closing its own opening, and the movable part 11 in the air distribution chamber 5 is used to open and close the valve 17. Specifically, the plug 7 includes a positioning part 18 and a sealing part 19 that are fixed to each other and have different outer diameters. The positioning part 18 is embedded in the second internal thread 3 at the rear end of the outer casing 1, and a positioning groove 20 is formed on the front end face of the positioning part 18. The rear ends of the pressure reducing chamber 6 and the air distribution chamber 5 are both inserted into the positioning groove 20. The sealing part 19 extends into the air distribution chamber 5, and the valve 17 is installed on the sealing part 19.
[0054] Valve 17 is rotatably connected to the sealing part 19, and a coil spring is provided between the rotating shaft of valve 17 and the sealing part 19 to limit the closure of valve 17. In the free state of the coil spring, valve 17 is in the open state, and the opening direction is forward. To ensure that valve 17 can be closed normally when the moving part 11 is pressed down, the opening angle of valve 17 is set to be less than 90°.
[0055] In this embodiment, the plug 7 has a length of 17 mm and an inner diameter of 9 mm. The sealing part 19 is 10 mm long, and the positioning part 18 is 7 mm long.
[0056] The implementation principle of this application embodiment is as follows: before firing, there is a certain distance between the movable part and the plug 7 under the action of the return spring, at which time the valve 17 is opened.
[0057] After firing, the bullet passes through the inside of the silencer and is ejected, while the combustion gases enter the silencer directly. Some of the combustion gases are blocked by the fixing component 12, enter the fourth exhaust port 16, and then enter the gap between the outer shell 1 and the pressure reducing chamber 6 (i.e., the third-stage gas chamber), where they are discharged through the first exhaust port. Most of the combustion gases pass through the fixing component 12 and remain in the first-stage gas chamber.
[0058] Driven by the gas, the moving part 11 moves backward and pushes the valve 17 to close. At this time, the outlet at the rear end of the silencer is blocked, and the gas inside can only be discharged according to the preset route (which is existing technology and will not be described in detail here): the gas first passes through the third exhaust port on the gas distribution chamber 5. The third exhaust port depressurizes the gas coming out of the nozzle and guides it in sections to enter the secondary gas chamber. Subsequently, the gas between the gas distribution chamber 5 and the depressurization chamber 6 (i.e., the secondary gas chamber) will pass through the second exhaust port. The second exhaust port further depressurizes the gas discharged from the gas distribution chamber 5 and discharges it to enter the tertiary gas chamber. Finally, the depressurized gas between the depressurization chamber 6 and the outer shell 1 (i.e., the tertiary gas chamber) is discharged through the first exhaust port.
[0059] As a result, the exhaust speed and expansion speed of the gas are reduced, the sonic boom is reduced, and the sound is decreased.
[0060] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.
Claims
1. A closed-bore, suppressor for a sniper rifle, characterized by: The application relates to a gas exhaust device, which comprises a shell (1) with a plurality of first exhaust holes arranged on the side wall of the shell (1); a muzzle connector (4), a gas distribution chamber (5), a pressure reduction chamber (6) and a plug (7) are arranged in the shell (1). The pressure reduction chamber (6) is tightly attached to the shell (1) and coaxial with the shell (1), and the front and rear ends of the pressure reduction chamber (6) do not exceed the front and rear end faces of the shell (1); a plurality of second exhaust holes are arranged on the side wall of the pressure reduction chamber (6). The gas distribution chamber (5) is coaxially fixed in the pressure reduction chamber (6) and is provided with a plurality of third exhaust holes on the side wall. The muzzle connector (4) is arranged at the front end of the shell (1) and extends into the gas distribution chamber (5) to be connected with a muzzle; a plurality of fourth exhaust holes (16) are arranged on the muzzle connector (4) in the circumferential direction, one end of each fourth exhaust hole (16) penetrates the rear end face of the muzzle connector (4), and the other end penetrates the side face of the muzzle connector (4) and is connected with the shell (1). The plug (7) is arranged at the rear end of the shell (1) and extends into the gas distribution chamber (5); the front end of the plug (7) is provided with a valve (17) for closing the opening of the plug (7), and the gas distribution chamber (5) is provided with a movable element (11) for opening and closing the valve (17).
2. The closed-baffle sniper rifle silencer of claim 1, wherein: The valve (17) is rotationally connected to the plug (7), and a coil spring is arranged between the rotation shaft of the valve (17) and the plug (7) to limit the closing of the valve (17); when the coil spring is in a free state, the valve (17) is in an open state and the opening direction is forward.
3. The closed-baffle sniper rifle silencer of claim 2, wherein: When the coil spring is in a free state, the opening angle of the valve (17) is less than 90 degrees.
4. The closed-baffle sniper rifle silencer of claim 1, wherein: The gas distribution chamber (5) comprises a first pipe element (9), a second pipe element (10), a movable element (11) and a fixed element (12); the first pipe element (9) is coaxially fixedly connected with the second pipe element (10), and the first pipe element (9) is in front of the second pipe element (10); the fixed element (12) is fixedly arranged in the first pipe element (9), the caliber of the front end of the fixed element (12) is smaller than that of the rear end, and the fixed element (12) is used for reducing the pressure of the gas; The movable element (11) can slide in the second pipe element (10) in the axial direction, and a return spring is arranged between the movable element (11) and the inner wall of the second pipe element (10) to make the movable element (11) have a forward moving tendency.
5. The closed-baffle sniper rifle silencer of claim 4, wherein: The fixed element (12) is provided with at least two in the axial direction.
6. The closed diversion type sniper rifle silencer according to claim 4, characterized in that: The movable element (11) comprises a pipe core (14) and a sleeve element (15); the caliber of the front end of the pipe core (14) is smaller than that of the rear end, and the pipe core (14) is used for reducing the pressure of the gas; the sleeve element (15) is sleeved on the outer wall of the rear end of the pipe core (14) and is fixedly connected with the pipe core (14).
7. The closed diversion type sniper rifle silencer according to claim 1, characterized in that: The first exhaust holes, the second exhaust holes and the third exhaust holes are arranged in a staggered mode.
8. The closed diversion type sniper rifle silencer according to claim 1, characterized in that: The front and rear end faces of the shell (1) are provided with internal teeth which protrude from the inner wall of the shell (1).
9. The closed diversion type sniper rifle silencer according to claim 1, characterized in that: The muzzle connector (4) is composed of three coaxial rings with different outer diameters, the outer diameters of the three rings decrease from front to back, and the rings include a first ring, a second ring and a third ring; the first ring is used for connecting the muzzle, extends into the shell (1) and abuts against the front end of the pressure reduction chamber (6); the second ring extends into the pressure reduction chamber (6) and abuts against the front end of the gas distribution chamber (5); and the third ring extends into the gas distribution chamber (5).
10. The closed diversion type sniper rifle silencer according to claim 1, characterized in that: The plug (7) includes a positioning part (18) and a sealing part (19) which are fixed to each other and have different outer diameters; the positioning part (18) is embedded in the rear end of the shell (1), and a positioning groove (20) is formed in the front end surface of the positioning part (18), the rear ends of the pressure reduction chamber (6) and the gas distribution chamber (5) are inserted into the positioning groove (20); and the sealing part (19) extends into the gas distribution chamber (5), and the valve (17) is installed on the sealing part (19).