Manual quick pressure relief device for micro-pressure oxygen cabin

Abstract

The utility model discloses a manual quick pressure relief device for a micro-pressure oxygen cabin, which relates to the technical field of quick pressure relief of the micro-pressure oxygen cabin, and comprises a pressure relief mechanism arranged on one side of the micro-pressure oxygen cabin, the pressure relief mechanism is used for manually realizing the pressure relief effect on the inner side and the outer side of the micro-pressure oxygen cabin, and the pressure relief mechanism comprises a plurality of nylon fixing seats, a porous baffle is arranged in the nylon fixing seat, a compression spring is arranged between the porous baffle and the nylon fixing seat, the porous baffle is arranged at the upper end of the compression spring, a silica gel pad is arranged at the lower end of the nylon fixing seat, and the silica gel pad and the compression spring are connected with the nylon fixing seat through a lead screw assembly. The bidirectional lead screw is matched with the compression spring, so that the silica gel pad can be in contact with or separated from the nylon fixing seat, the cabin pressure in the micro-pressure oxygen cabin can be reduced to normal pressure in a short time, an electric mechanical structure is not needed, manual starting can be ensured under any condition, and single-hand operation is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to micro pressure oxygen cabin quick pressure relief technical field, specifically a micro pressure oxygen cabin manual quick pressure relief device. BACKGROUND

[0002] Micro pressure oxygen cabin usually refers to the low pressure oxygen cabin of working pressure in 1.0~1.5ATA range, is widely used in plateau adaptation, sports rehabilitation and other fields, and its core function is to promote the absorption and utilization of oxygen in human body by providing slightly higher than normal pressure oxygen-rich environment, in emergency such as cabin personnel sudden discomfort, equipment failure or fire risk, the pressure in the cabin needs to be quickly reduced to normal pressure to avoid secondary injury to personnel or equipment, but the existing pressure relief device adopts electric pressure relief valve and safety valve to realize pressure relief effect, relies on power supply, control system or specific pressure threshold, cannot realize manual active control, and it is difficult to meet the extreme emergency demand.

[0003] Based on this, a micro pressure oxygen cabin manual quick pressure relief device is provided, which can eliminate the drawbacks of the prior art. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a micro pressure oxygen cabin manual quick pressure relief device to solve the problem of manual control of pressure relief in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A micro pressure oxygen cabin manual quick pressure relief device, comprising a pressure relief mechanism arranged on one side of the micro pressure oxygen cabin, the pressure relief mechanism is used for manually realizing pressure relief effect on both sides of the micro pressure oxygen cabin, the pressure relief mechanism comprises a plurality of nylon fixing bases, the outer side of the nylon fixing base is threadedly connected with a nylon locking nut, the inside of the nylon fixing base is provided with a perforated baffle, the perforated baffle is in contact with the inner wall of the nylon fixing base and is not fixed, a compression spring is arranged between the perforated baffle and the nylon fixing base, the perforated baffle is arranged at the upper end of the compression spring, a silica gel pad is arranged at the lower end of the nylon fixing base, and the silica gel pad and the compression spring are connected with the nylon fixing base through a screw rod assembly.

[0007] Preferably, the nylon fixing base comprises a base and a stud, the stud is fixedly arranged at the upper end of the base, an annular block is fixedly arranged in the inside of the stud, the base, the stud and the annular block are of an integrated structure, the silica gel pad is arranged at the bottom of the annular block, the silica gel pad is in contact with the lower surface of the annular block and is not fixed, and one end of the compression spring is fixedly connected with the top of the annular block.

[0008] Preferably, the lead screw assembly comprises a bidirectional lead screw, the two ends of the bidirectional lead screw are threadedly connected with a first nut and a second nut, the side away from the first nut of the second nut is provided with a gasket, the gasket is sleeved on the outer side of the bidirectional lead screw, the outer side of the lower bidirectional lead screw is threadedly connected with a stainless steel connecting plate and a first handle, the stainless steel connecting plate is arranged at the lower end of the corresponding gasket, the first handle is arranged at the lower end of the stainless steel connecting plate, the outer side of the upper bidirectional lead screw is threadedly connected with a second handle, the second handle is arranged at the upper end of a multi-hole baffle, the multi-hole baffle is arranged at the upper end of the other gasket, and the multi-hole baffle is threadedly connected with the bidirectional lead screw.

[0009] Preferably, the outer side of the nylon fixing seat is sleeved with an annular silica gel pad, and the annular silica gel pad is arranged between the nylon locking nut and the base.

[0010] Preferably, the outer diameter of the silica gel pad is larger than the inner diameter of the annular block.

[0011] Preferably, the stainless steel connecting plate and the silica gel pad are in an integrated structure, and the silica gel pad is arranged at the upper end of the stainless steel connecting plate.

[0012] Preferably, the second handle and the first handle are spherical handles.

[0013] Preferably, the device comprises:

[0014] State one: when the second handle and the first handle are not subjected to manual traction force, the multi-hole baffle, the silica gel pad and the nylon fixing seat are in a relatively static state, the compression spring is in an initial uncompressed state, the silica gel pad is moved to the side of the annular block under the micro-pressure oxygen cabin internal pressure, and the silica gel pad is in close contact with the annular block.

[0015] State two: when the second handle and the first handle are subjected to manual traction force, the multi-hole baffle and the silica gel pad are moved to the side of the micro-pressure oxygen cabin, the compression spring is in a compressed state, and a gap is formed between the silica gel pad and the annular block.

[0016] Compared with the prior art, the device has the following beneficial effects:

[0017] The device is provided with a micro-pressure oxygen cabin manual rapid pressure relief device, the silica gel pad can be in contact with or separated from the nylon fixing seat through cooperation of the bidirectional lead screw and the compression spring, manual pressure relief effect is realized, the cabin pressure in the micro-pressure oxygen cabin can be reduced to normal pressure in a short time, the device does not need to rely on a power mechanical structure, manual starting can be ensured under any condition, the operation force is small, one-hand operation is facilitated, overall practicability is increased, in addition, the device is connected with other components through the bidirectional lead screw, replacement and installation are facilitated, and maintenance is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model discloses a micro-pressure oxygen cabin and pressure relief mechanism's structure schematic view.

[0019] Figure 2 The utility model discloses a one side's structure schematic view.

[0020] Figure 3 The utility model discloses the structure schematic view of the other side.

[0021] Figure 4 The utility model discloses the structure schematic view of the decomposition.

[0022] Figure 5 The utility model discloses the reverse structure schematic view of Figure 4

[0023] Figure 6 The utility model discloses the structure schematic view of the inside.

[0024] Figure mark note: micro-pressure oxygen cabin 100, pressure relief mechanism 200, nylon fixed seat 201, base 2011, stud 2012, annular block 2013, nylon locking nut 202, multi-hole baffle 203, compression spring 204, silica gel pad 205, two-way screw rod 206, first nut 207, second nut 208, gasket 209, stainless steel connecting plate 210, first handle 211, second handle 212, annular silica gel pad 213. Specific implementation

[0025] In order to make the utility model's purpose, technical scheme and advantage more clear and clear, following combining with the drawing and example, this utility model carries out further detailed explanation.

[0026] In one embodiment, as Figures 1-6 ​As shown, a kind of micro-pressure oxygen cabin manual quick pressure relief device, including the pressure relief mechanism 200 being arranged in one side of micro-pressure oxygen cabin 100, the wall of micro-pressure oxygen cabin 100 and the base 2011 of nylon fixed seat 201 contact, the components such as nylon lock nut 202, porous baffle 203, compression spring 204, second handle 212 are separated outside micro-pressure oxygen cabin 100, silicone pad 205 and stainless steel connecting plate 210 are separated inside micro-pressure oxygen cabin 100, pressure relief mechanism 200 is used to manually realize pressure relief effect on both sides of micro-pressure oxygen cabin 100, pressure relief mechanism 200 includes several nylon fixed seat 201, nylon fixed seat 201 provides basic manual pressure relief function, not dependent on power, simple and reliable structure, by the mutual cooperation between porous baffle 203, compression spring 204 and silicone pad 205, constitute sealing structure, the outside of nylon fixed seat 201 is threadedly connected with nylon lock nut 202, the inside of nylon fixed seat 201 is provided with porous baffle 203, the airflow impact during pressure relief can be avoided by porous, porous baffle 203 and the inner wall of nylon fixed seat 201 contact and are not fixed, the non-fixed design allows it to move with bidirectional screw rod 206 when operating, form pressure relief channel, compression spring 204 is arranged between porous baffle 203 and nylon fixed seat 201, the design of compression spring 204 can ensure the sealing property in non-operating state, the structure and spring coefficient of compression spring 204 can be selected according to actual demand, porous baffle 203 is arranged at the upper end of compression spring 204, the lower end of nylon fixed seat 201 is provided with silicone pad 205, silicone pad 205 and compression spring 204 are connected with nylon fixed seat 201 by screw rod assembly, the silicone material adapts to oxygen cabin environment, convenient to prolong service life, it is convenient to install silicone pad 205 and other components on one side of nylon fixed seat 201, increase the stability of connection.

[0027] As Figures 4-6 Shown, nylon fixed seat 201 includes base 2011 and stud 2012, nylon material can reduce weight and resist oxygen cabin environment corrosion, stud 2012 is fixedly arranged on the upper end of base 2011, annular block 2013 is fixedly arranged in the inside of stud 2012, base 2011, stud 2012 and annular block 2013 are integrated structure, integrated design can avoid leakage risk at connecting place, ensure the sealing property of pressure relief channel, silicone pad 205 is arranged at the bottom of annular block 2013, silicone pad 205 and the lower surface of annular block 2013 contact and are not fixed, one end of compression spring 204 is fixedly connected with the top of annular block 2013, annular block 2013 is as fixed point of compression spring 204 and sealing contact surface of silicone pad 205.

[0028] As Figures 4-6As shown, the screw rod assembly includes a bidirectional screw rod 206, which realizes the synchronous lifting or pulling action of the multi-hole baffle 203 and the silica gel pad 205, can quickly form a pressure relief gap, and the two ends of the bidirectional screw rod 206 are threadedly connected with a first nut 207 and a second nut 208. The first nut 207 is threadedly connected with the bidirectional screw rod 206, and the second nut 208 is tightly attached to the outer side of the first nut 207. By tightening in the opposite direction, a loosening prevention structure is formed to offset the vibration or impact during the movement of the screw rod and avoid loosening of the nut after long-term use, resulting in transmission failure. The first nut 207 and the second nut 208 are both M4 nuts, and the side of the second nut 208 away from the first nut 207 is provided with a gasket 209. The gasket 209 is an M4 gasket and is sleeved on the outer side of the bidirectional screw rod 206. The outer side of the lower bidirectional screw rod 206 is threadedly connected with a stainless steel connecting plate 210 and a first handle 211. The stainless steel connecting plate 210 is arranged at the lower end corresponding to the gasket 209, and the first handle 211 is arranged at the lower end of the stainless steel connecting plate 210. The outer side of the upper bidirectional screw rod 206 is threadedly connected with a second handle 212, which is arranged at the upper end of the multi-hole baffle 203. The multi-hole baffle 203 is arranged at the upper end of the other gasket 209, and the multi-hole baffle 203 is threadedly connected with the bidirectional screw rod 206. The bidirectional screw rod 206 forms a whole structure between the silica gel pad 205 and the multi-hole baffle 203, which is convenient for installation and replacement. When not in operation, the force of the compression spring 204 can make the silica gel pad 205 tightly contact with the annular block 2013, ensuring the normally closed sealing.

[0029] As shown in Figures 3-6 The outer side of the nylon fixing seat 201 is sleeved with an annular silica gel pad 213, which is arranged between the nylon locking nut 202 and the base 2011. The annular silica gel pad 213 forms a secondary seal between the nylon locking nut 202 and the base 2011, enhancing the sealing performance and preventing external leakage.

[0030] As shown in Figure 6 The outer diameter of the silica gel pad 205 is larger than the inner diameter of the annular block 2013, ensuring that the silica gel pad 205 completely covers the pressure relief channel, and the size interference design ensures the sealing reliability.

[0031] As shown in Figure 6 The stainless steel connecting plate 210 and the silica gel pad 205 are of an integrated structure, and the silica gel pad 205 is arranged at the upper end of the stainless steel connecting plate 210, improving the connection strength and avoiding leakage caused by relative movement.

[0032] As shown in Figures 2-6 The second handle 212 and the first handle 211 are both spherical handles, which are convenient to force and can increase the contact area with the hand, reducing the operation force.

[0033] As Figures 2-6 shown, when the second handle 212 and the first handle 211 are not subjected to manual traction force, the porous baffle 203, the silica gel pad 205 and the nylon fixed seat 201 are in a relatively static state, the compression spring 204 is in an initial uncompressed state, the silica gel pad 205 is subjected to the internal pressure of the micro-pressure oxygen cabin 100 and moves to the side of the annular block 2013, so that the silica gel pad 205 is in close contact with the annular block 2013, when the second handle 212 and the first handle 211 are subjected to manual traction force, the porous baffle 203 and the silica gel pad 205 move to the inside of the micro-pressure oxygen cabin 100, the compression spring 204 is in a compressed state, so that a gap is formed between the silica gel pad 205 and the annular block 2013.

[0034] In use, under normal conditions, the cabin pressure can compress the silica gel pad 205 to form a seal with the annular block 2013, when operating, the user selects the corresponding spherical handle according to the position, and then pulls the bidirectional screw rod 206 linearly to the inside of the micro-pressure oxygen cabin 100, so that the porous baffle 203 moves downward, the silica gel pad 205 forms a pressure relief channel, the pressure relief airflow in the micro-pressure oxygen cabin 100 can pass through the pressure relief gap between the silica gel pad 205 and the annular block 2013, and then be discharged after being buffered by the porous baffle 203, so as to achieve the pressure relief effect.

[0035] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A manual rapid depressurization device for a micro-pressure oxygen chamber, comprising a depressurization mechanism (200) disposed on one side of a micro-pressure oxygen chamber (100), wherein the depressurization mechanism (200) is used to manually achieve a depressurization effect on both the inside and outside of the micro-pressure oxygen chamber (100), characterized in that, The pressure relief mechanism (200) includes several nylon fixing seats (201). A nylon locking nut (202) is threaded onto the outer side of each nylon fixing seat (201). A perforated baffle (203) is provided inside each nylon fixing seat (201). The perforated baffle (203) is in contact with the inner wall of the nylon fixing seat (201) but is not fixed. A compression spring (204) is provided between the perforated baffle (203) and the nylon fixing seat (201). The perforated baffle (203) is located at the upper end of the compression spring (204). A silicone pad (205) is provided at the lower end of the nylon fixing seat (201). The silicone pad (205) and the compression spring (204) are connected to the nylon fixing seat (201) through a screw assembly.

2. The manual rapid depressurization device for a micro-pressure oxygen chamber according to claim 1, characterized in that, The nylon fixing base (201) includes a base (2011) and a stud (2012). The stud (2012) is fixedly installed on the upper end of the base (2011). An annular block (2013) is fixedly installed inside the stud (2012). The base (2011), stud (2012) and annular block (2013) are an integral structure. The silicone pad (205) is installed at the bottom of the annular block (2013). The silicone pad (205) is in contact with the lower surface of the annular block (2013) but is not fixed. One end of the compression spring (204) is fixedly connected to the top of the annular block (2013).

3. The manual rapid depressurization device for a micro-pressure oxygen chamber according to claim 2, characterized in that, The lead screw assembly includes a bidirectional lead screw (206), both ends of which are threadedly connected to a first nut (207) and a second nut (208). A washer (209) is provided on the side of the second nut (208) away from the first nut (207). The washer (209) is sleeved on the outside of the bidirectional lead screw (206). A stainless steel connecting plate (210) and a first handle (211) are threadedly connected to the lower outer side of the bidirectional lead screw (206). A stainless steel connecting plate (210) is set at the lower end of the corresponding gasket (209). The first handle (211) is set at the lower end of the stainless steel connecting plate (210). The outer side of the double-acting screw (206) located above is threaded with a second handle (212). The second handle (212) is set at the upper end of the perforated baffle (203). The perforated baffle (203) is set at the upper end of another gasket (209). The perforated baffle (203) is threadedly connected to the double-acting screw (206).

4. A manual rapid depressurization device for a micro-pressure oxygen chamber according to claim 2, characterized in that, The outer side of the nylon fixing seat (201) is fitted with an annular silicone pad (213), which is located between the nylon locking nut (202) and the base (2011).

5. A manual rapid depressurization device for a micro-pressure oxygen chamber according to claim 2, characterized in that, The outer diameter of the silicone pad (205) is larger than the inner diameter of the annular block (2013).

6. A manual rapid depressurization device for a micro-pressure oxygen chamber according to claim 3, characterized in that, The stainless steel connecting plate (210) and the silicone pad (205) are an integral structure, and the silicone pad (205) is located on the upper end of the stainless steel connecting plate (210).

7. A manual rapid depressurization device for a micro-pressure oxygen chamber according to claim 3, characterized in that, Both the second handle (212) and the first handle (211) are configured as ball handles.

8. A manual rapid depressurization device for a micro-pressure oxygen chamber according to claim 3, characterized in that, include: State 1: When the second handle (212) and the first handle (211) are not subjected to manual traction, the porous baffle (203), the silicone pad (205) and the nylon fixing seat (201) are in a relatively static state, the compression spring (204) is in an initial uncompressed state, and the silicone pad (205) is moved towards the annular block (2013) by the internal pressure of the micro-pressure oxygen chamber (100), so that the silicone pad (205) and the annular block (2013) are in close contact; State 2: When the second handle (212) and the first handle (211) are subjected to manual traction, the porous baffle (203) and the silicone pad (205) move toward the inside of the micro-pressure oxygen chamber (100), and the compression spring (204) is in a compressed state, so that a gap appears between the silicone pad (205) and the annular block (2013).

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