An oil-gas separator vibration damper

Abstract

This invention relates to the field of automotive shock absorbers and discloses an oil-gas separation shock absorber, comprising a sliding sleeve and a cylinder. The cylinder has a floating piston inside, which is slidably mounted inside the cylinder. A valve body includes a compression valve and an extension valve. A sealing plug is connected to the top of the cylinder. A fixing rod has its top fixedly connected to the top of the sliding sleeve, and its bottom connected to the valve body. This invention, by incorporating an expansion member, allows the sealing ring to expand outwards, resulting in a tighter contact between the sealing ring and the inner wall of the cylinder, thereby improving sealing performance and reducing the risk of oil or nitrogen leakage, ensuring shock absorption performance. A circulation device allows coolant to flow inside the heat dissipation pipe, carrying away heat from the oil in the spiral storage chamber, achieving efficient heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of automotive shock absorber technology, specifically an oil-gas separation shock absorber. Background Technology

[0002] A car shock absorber is an instrument and a wear-prone part in the process of car use. It uses springs to absorb vibration and pressure and adds damping to resist vibration, filter out unnecessary vibration, and make the vehicle more stable.

[0003] One type of oil-gas separation shock absorber mainly consists of a sliding sleeve and a cylinder. Inside the cylinder is a floating piston. The space below the floating piston is filled with nitrogen, and the space above it is filled with oil. Above the floating piston is a valve body, which is connected to the sliding sleeve via a fixed rod. When the car is moving, the fixed rod and the sliding sleeve are connected to the buffer spring, which absorbs energy. Finally, the valve body slides inside the oil, and the slow back-and-forth flow of the oil provides a buffering effect.

[0004] The existing floating piston is designed to seal nitrogen gas, so its sealing performance is particularly important. If oil and nitrogen gas are mixed, leakage will occur, and the vibration damping performance will be greatly reduced. Therefore, the structure of the floating piston needs to be improved. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, the present invention provides an oil-gas separation vibration damper to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An oil-gas separator shock absorber includes a sliding sleeve and a cylinder, wherein the interior of the cylinder is provided with:

[0010] A floating piston, which is sealed and slidably mounted inside the cylinder;

[0011] Valve body, which includes a compression valve and an extension valve;

[0012] A sealing plug, which is connected to the top of the cylinder;

[0013] A fixed rod, the top of which is fixedly connected to the top of the sliding sleeve, and the bottom of the fixed rod is connected to the valve body;

[0014] The floating piston includes:

[0015] The floating component has a large annular groove and a small annular groove on its outer wall;

[0016] A sealing ring is snapped into the interior of the large annular groove;

[0017] The expansion element is installed between the sealing ring and the large annular groove. Through the action of the expansion element, the sealing ring can be expanded outward, making the contact between the sealing ring and the inner wall of the cylinder more tight, thereby improving the sealing performance.

[0018] Preferably, a storage cavity is provided in the side wall of the cylinder, and the storage cavity is connected to the space below the valve body. When the valve body is compressed downward, excess oil can enter the interior of the storage cavity.

[0019] Preferably, the storage cavity is spiral in shape, and the bottom end of the spiral storage cavity is connected to the space below the valve body. By setting the storage cavity in a spiral shape, the oil can stay inside the storage cavity for a longer time, thereby improving the heat dissipation effect.

[0020] Preferably, a heat dissipation pipe is provided on the outside of the cylinder, the heat dissipation pipe is wrapped around the vicinity of the storage cavity, and the heat dissipation pipe contains coolant, which flows inside the heat dissipation pipe under the drive of the circulation device;

[0021] Coolant consists of three parts: water, antifreeze, and additives. Based on the different antifreeze components, coolant can be classified into the following three types:

[0022] Alcohol-based coolant uses ethanol (commonly known as alcohol) as an antifreeze agent. It is inexpensive, has good fluidity, and is simple to prepare.

[0023] Glycerin-based coolants have a high boiling point, low volatility, are not easily ignited, are non-toxic, and have low corrosiveness.

[0024] Ethylene glycol-based coolants are formulated using ethylene glycol as an antifreeze agent, with the addition of small amounts of anti-foaming, anti-corrosion, and other additives. Because ethylene glycol is readily soluble in water, it can be formulated into coolants with various freezing points, with the lowest freezing point reaching -68°C. These coolants possess characteristics such as high boiling point, low foaming tendency, good viscosity-temperature properties, and anti-corrosion and anti-scaling properties, making them a relatively ideal coolant.

[0025] Preferably, a pressure pipe is connected to the top of the heat dissipation pipe, the top of which communicates with the interior of the sliding sleeve, and a buffer pipe is connected to the bottom of the heat dissipation pipe. Through the action of the sealing plug, the space inside the sliding sleeve is compressed, thereby increasing its internal pressure. The air pressure applies pressure to the inside of the pressure pipe and the heat dissipation pipe, thereby causing the cooling inside the heat dissipation pipe to flow downward. When the cylinder moves downward, the space formed between the sealing plug and the sliding sleeve increases, and its internal air pressure decreases, thereby creating a negative pressure that causes the coolant inside the heat dissipation pipe to move upward. This process repeats, allowing the coolant to flow back and forth inside the heat dissipation pipe, thereby dissipating the heat of the oil inside the storage cavity and achieving efficient heat dissipation.

[0026] Preferably, an air bladder is provided in the middle of the floating component, and the air bladder is connected to the expansion component through a connecting hole. A small annular groove is formed on the outer wall of the floating component, and a wear-resistant ring is provided inside the small annular groove. The outer side of the wear-resistant ring contacts the inner wall of the cylinder. When the floating component moves up and down, the air bladder is compressed under the action of resistance, so that the air pressure inside the air bladder enters the expansion component, thereby making the contact between the expansion component and the inner wall of the cylinder more tight and improving the sealing performance.

[0027] Preferably, the side wall of the cylinder is provided with a filling component, the filling component includes a filling hole, the inside of the filling hole is provided with a movable plug, the inside of the movable plug is provided with a feed hole, and a first spring is connected between the movable plug and the filling hole. When the first spring is in the default state, one end of the feed hole is closed by the filling hole. When an external force applies pressure to the movable plug, it overcomes the pressure of the first spring and makes one end of the feed hole communicate with the inside of the cylinder.

[0028] Preferably, the valve body includes a valve core, which is fixedly connected to the bottom end of a fixed rod. A movable block is sleeved on the outside of the valve core and is slidably connected to the valve core. A sliding groove is formed on the top of the valve core. A sliding ring is connected to the top of the movable block and is slidably connected to the sliding groove. A second spring is connected between the sliding ring and the sliding groove. A compression valve passage and a tension valve passage are formed on the valve core, and a flow hole is formed on the movable block.

[0029] Preferably, the movable block has two extreme ends on the valve core;

[0030] When the moving block is at the upper limit end of the valve core, the flow orifice is connected to the compression valve passage;

[0031] When the moving block is at the lower limit end of the valve core, the flow hole is connected to the extension valve passage;

[0032] By configuring a valve core and a movable block, when the movable block is at the upper limit end of the valve core, the flow orifice is connected to the compression valve passage. When the valve body moves downward, the movable block is slid to the upper limit end of the valve core under the action of the lower oil pressure. When the movable block is at the lower limit end of the valve core, the flow orifice is connected to the extension valve passage. When the valve body moves upward, the movable block is slid to the lower limit end of the valve core under the action of the upper oil pressure. Since the diameters of the compression valve passage and the extension valve passage are small, there will be greater resistance when the valve body moves up and down, thereby achieving the effect of shock absorption.

[0033] Compared with the prior art, the present invention provides an oil-gas separator vibration damper, which has the following beneficial effects:

[0034] 1. This invention incorporates an expansion element, which allows the sealing ring to expand outward, resulting in a tighter contact between the sealing ring and the inner wall of the cylinder, thereby improving sealing performance, reducing the risk of oil or nitrogen leakage, and ensuring vibration damping performance.

[0035] 2. The present invention allows the coolant to flow inside the heat dissipation pipe through a circulation device, thereby carrying away the heat of the oil inside the spiral storage cavity and achieving efficient heat dissipation.

[0036] 3. This invention utilizes the sealing plug to compress the space inside the sliding sleeve, thereby increasing its internal pressure. This pressure is applied to the pressurization pipe and the cooling pipe, causing the coolant inside the cooling pipe to flow downwards. As the cylinder moves downwards, the space between the sealing plug and the sliding sleeve increases, and the internal air pressure decreases. This creates a negative pressure, causing the coolant inside the cooling pipe to move upwards. This reciprocating motion allows the coolant to flow back and forth inside the cooling pipe, dissipating the heat from the oil in the storage chamber and achieving efficient heat dissipation.

[0037] 4. This invention, by setting a valve core and a movable block, ensures that when the movable block is at the upper limit end of the valve core, the flow hole communicates with the compression valve passage. When the valve body moves downward, the movable block is slid to the upper limit end of the valve core under the action of the lower oil pressure. When the movable block is at the lower limit end of the valve core, the flow hole communicates with the extension valve passage. When the valve body moves upward, the movable block is slid to the lower limit end of the valve core under the action of the upper oil pressure. Since the diameters of the compression valve passage and the extension valve passage are small, there will be greater resistance when the valve body moves up and down, thereby achieving the effect of shock absorption. Attached Figure Description

[0038] Figure 1 This is a perspective view of the present invention;

[0039] Figure 2 This is a cross-sectional view of the present invention;

[0040] Figure 3 This is a diagram showing the position change of the valve body in this invention;

[0041] Figure 4 This is a diagram showing the partial positional changes of the valve body of the present invention;

[0042] Figure 5 This is an exploded view of the floating piston of the present invention;

[0043] Figure 6 This is a perspective view of the heat dissipation pipe of the present invention.

[0044] Figure 7 This is a partial cross-sectional view of the floating piston of the present invention;

[0045] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle.

[0046] In the diagram: 110, sliding sleeve; 120, cylinder; 210, fixed rod; 220, sealing plug; 230, valve body; 231, movable block; 232, valve core; 233, flow hole; 234, extension valve passage; 235, compression valve passage; 236, sliding ring; 237, sliding groove; 238, second spring; 240, floating piston; 241, floating component; 242, large annular groove; 243, sealing ring; 244, small annular groove; 245, wear-resistant ring; 246, air bladder; 247, connecting hole; 248, expansion component; 310, storage chamber; 320, heat dissipation pipe; 330, buffer pipe; 340, pressurization pipe; 410, filling hole; 420, movable plug; 430, first spring; 440, feed hole. Detailed Implementation

[0047] Example:

[0048] See Figure 1-4 This embodiment discloses an oil-gas separator vibration damper, including a sliding sleeve 110 and a cylinder 120, wherein the interior of the cylinder 120 has:

[0049] A floating piston 240 is sealed and slidably mounted inside the cylinder 120;

[0050] The valve body 230 includes a compression valve and an extension valve. When the valve body 230 moves downward, the compression valve opens and the extension valve closes. When the valve body 230 moves upward, the extension valve opens and the compression valve closes.

[0051] A sealing plug 220 is attached to the top of the cylinder 120;

[0052] The top end of the fixed rod 210 is fixedly connected to the top end of the sliding sleeve 110, and the bottom end of the fixed rod 210 is connected to the valve body 230.

[0053] The floating piston 240 includes:

[0054] The floating component 241 has a large annular groove 242 and a small annular groove 244 on its outer wall;

[0055] The sealing ring 243 is snapped into the interior of the large annular groove 242;

[0056] Continue reading Figure 5-6 As an optimization of this embodiment, it also includes an expansion member 248, which is installed between the sealing ring 243 and the large annular groove 242. Through the action of the expansion member 248, the sealing ring 243 can expand outward, making the contact between the sealing ring 243 and the inner wall of the cylinder 120 more compact, thereby improving the sealing performance.

[0057] like Figure 4 As shown, a storage cavity 310 is provided in the side wall of the cylinder 120. The storage cavity 310 is connected to the space below the valve body 230. When the valve body 230 is compressed downward, excess oil can enter the interior of the storage cavity 310.

[0058] like Figure 4 As shown, the storage cavity 310 is spiral in shape, and the bottom end of the spiral storage cavity 310 is connected to the space below the valve body 230. By setting the spiral storage cavity 310, the oil can stay inside the storage cavity 310 for a longer time, thereby improving the heat dissipation effect.

[0059] like Figure 4 As shown, a heat dissipation pipe 320 is provided on the outside of the cylinder 120. The heat dissipation pipe 320 is wrapped around the vicinity of the storage cavity 310. The heat dissipation pipe 320 contains coolant, which flows inside the heat dissipation pipe 320 under the drive of the circulation device.

[0060] It should be noted that the circulation device can be a micro pump. The circulation device allows the coolant to flow inside the heat dissipation pipe 320, thereby carrying away the heat of the oil inside the spiral storage chamber 310, achieving efficient heat dissipation.

[0061] Continue reading Figure 5-6 The top of the heat dissipation pipe 320 is connected to a pressure pipe 340, the top end of the pressure pipe 340 is connected to the inside of the sliding sleeve 110, and the bottom end of the heat dissipation pipe 320 is connected to a buffer pipe 330.

[0062] With the above scheme, when the cylinder 120 moves toward the inside of the sliding sleeve 110, the space inside the sliding sleeve 110 is squeezed due to the action of the sealing plug 220, thereby increasing its internal pressure. The air pressure applies pressure to the inside of the pressurizing pipe 340 and the cooling pipe 320, thereby causing the coolant inside the cooling pipe 320 to flow downward. When the cylinder 120 moves downward, the space formed between the sealing plug 220 and the sliding sleeve 110 increases, and the air pressure inside it also decreases. This creates a negative pressure, causing the coolant inside the cooling pipe 320 to move upward.

[0063] Continue reading Figure 7An air bladder 246 is provided in the middle of the floating member 241. The air bladder 246 is connected to the expansion member 248 through a connecting hole 247. A small annular groove 244 is formed on the outer wall of the floating member 241. A wear-resistant ring 245 is provided inside the small annular groove 244. The outer side of the wear-resistant ring 245 contacts the inner wall of the cylinder 120. When the floating member 241 moves up and down, the air bladder 246 is compressed under the action of resistance, so that the air pressure inside the air bladder 246 enters the expansion member 248, thereby making the contact between the expansion member 248 and the inner wall of the cylinder 120 tighter and improving the sealing performance.

[0064] Continue reading Figure 8 The cylinder 120 is provided with a filling component on its side wall. The filling component includes a filling hole 410. A movable plug 420 is provided inside the filling hole 410. A feed hole 440 is opened inside the movable plug 420. A first spring 430 is connected between the movable plug 420 and the filling hole 410. When the first spring 430 is in the default state, one end of the feed hole 440 is closed by the filling hole 410. When an external force applies pressure to the movable plug 420, it overcomes the pressure of the first spring 430 and makes one end of the feed hole 440 communicate with the inside of the cylinder 120.

[0065] When nitrogen needs to be filled, the movable plug 420 is pushed inward, so that the feed hole 440 connects the cylinder 120 with the outside, allowing nitrogen to enter the cylinder 120.

[0066] like Figure 4 As shown, the valve body 230 includes a valve core 232, which is fixedly connected to the bottom end of the fixed rod 210. A movable block 231 is sleeved on the outside of the valve core 232, and the movable block 231 is slidably connected to the valve core 232. A sliding groove 237 is opened on the top of the valve core 232. A sliding ring 236 is connected to the top of the movable block 231, and the sliding ring 236 is slidably connected to the sliding groove 237. A second spring 238 is connected between the sliding ring 236 and the sliding groove 237. A compression valve passage 235 and an extension valve passage 234 are opened on the valve core 232, and a flow hole 233 is opened on the movable block 231.

[0067] The movable block 231 has two extreme ends on the valve core 232;

[0068] When the movable block 231 is located at the upper limit end of the valve core 232, the flow hole 233 is connected to the compression valve passage 235. When the valve body 230 moves downward, under the action of the lower oil pressure, the movable block 231 is slid to the upper limit end of the valve core 232.

[0069] When the movable block 231 is located at the lower limit end of the valve core 232, the flow hole 233 is connected to the extension valve passage 234. When the valve body 230 moves upward, under the action of the upper oil pressure, the movable block 231 is slid to the lower limit end of the valve core 232.

[0070] Because the diameters of the compression valve passage 235 and the extension valve passage 234 are small, there will be greater resistance when the valve body 230 moves up and down, which can achieve the effect of shock absorption.

Claims

1. An oil-gas separator vibration damper, comprising a sliding sleeve (110) and a cylinder (120), characterized in that: The interior of the cylinder (120) has: A floating piston (240) is sealed and slidably mounted inside the cylinder (120); Valve body (230), which includes a compression valve and an extension valve; A sealing plug (220) is attached to the top of the cylinder (120); A fixed rod (210) is fixedly connected at its top to the top of a sliding sleeve (110), and the bottom of the fixed rod (210) is connected to the valve body (230); The floating piston (240) includes: The floating component (241) has a large annular groove (242) and a small annular groove (244) on its outer wall. A sealing ring (243) is snapped into the interior of the large annular groove (242); An expansion element (248) is installed between the sealing ring (243) and the large annular groove (242); An air bladder (246) is provided in the middle of the floating component (241). The air bladder (246) is connected to the expansion component (248) through a connecting hole (247). A small annular groove (244) is provided on the outer wall of the floating component (241). A wear-resistant ring (245) is provided inside the small annular groove (244). The outer side of the wear-resistant ring (245) is in contact with the inner wall of the cylinder (120). The valve body (230) includes a valve core (232), which is fixedly connected to the bottom end of a fixed rod (210). A movable block (231) is sleeved on the outside of the valve core (232), and the movable block (231) is slidably connected to the valve core (232). A sliding groove (237) is provided on the top of the valve core (232). A sliding ring (236) is connected to the top of the movable block (231), and the sliding ring (236) is slidably connected to the sliding groove (237). A second spring (238) is connected between the sliding ring (236) and the sliding groove (237). A compression valve passage (235) and an extension valve passage (234) are provided on the valve core (232), and a flow hole (233) is provided on the movable block (231). The movable block (231) has two extreme ends on the valve core (232); When the movable block (231) is located at the upper limit end of the valve core (232), the flow hole (233) is connected to the compression valve passage (235); When the movable block (231) is located at the lower limit end of the valve core (232), the flow hole (233) is connected to the extension valve passage (234).

2. The oil-gas separator vibration damper according to claim 1, characterized in that: A storage cavity (310) is provided in the side wall of the cylinder (120), and the storage cavity (310) is connected to the space below the valve body (230).

3. The oil-gas separator vibration damper according to claim 2, characterized in that: The storage cavity (310) is spiral in shape, and the bottom end of the spiral storage cavity (310) is connected to the space below the valve body (230).

4. The oil-gas separator vibration damper according to claim 3, characterized in that: The cylinder (120) is provided with a heat dissipation pipe (320) on the outside. The heat dissipation pipe (320) is wrapped around the storage cavity (310). The heat dissipation pipe (320) contains coolant, which flows inside the heat dissipation pipe (320) under the drive of the circulation device.

5. The oil-gas separator vibration damper according to claim 4, characterized in that: The top of the heat dissipation pipe (320) is connected to a pressure pipe (340), the top end of the pressure pipe (340) is connected to the inside of the sliding sleeve (110), and the bottom end of the heat dissipation pipe (320) is connected to a buffer pipe (330).

6. The oil-gas separator vibration damper according to claim 1, characterized in that: The cylinder (120) has a filling component on its side wall. The filling component includes a filling hole (410). A movable plug (420) is provided inside the filling hole (410). A feed hole (440) is opened inside the movable plug (420). A first spring (430) is connected between the movable plug (420) and the filling hole (410). When the first spring (430) is in the default state, one end of the feed hole (440) is closed by the filling hole (410). When an external force applies pressure to the movable plug (420), it overcomes the pressure of the first spring (430) and makes one end of the feed hole (440) communicate with the inside of the cylinder (120).

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