A high-protection-level underground air-raid door sealing and leak-free system

Abstract

This invention belongs to the field of water supply and drainage, specifically relating to a high-protection-level underground air-raid shelter door sealing and leak-free system. It includes an inlet channel, a first shell, a second shell, and a third shell. A drainage channel is provided within the first shell, and multiple first one-way valves are installed within the drainage channel. An inner cavity is formed in the upper part of the second shell, and a first inner liner is installed within the inner cavity. An inlet channel is also provided in the second shell, and a second one-way valve is installed on the channel. This invention features a purely mechanical structure, which avoids leakage failure. Furthermore, this invention enables rapid opening and closing of the valves within the third shell, resulting in fast response, large drainage capacity, and high drainage efficiency.

Description

Technical Field

[0001] The invention belongs to the field of water supply and drainage, and in particular relates to a high-protection-level underground civil air defense door sealing and leakage-free system. Background Art

[0002] Air-raid shelters are set up in high-speed railway stations, airports and other places. The underground passages of air-raid shelters are closed with very thick air-raid doors. However, the air-raid doors have limited anti-leakage performance. In special situations such as heavy rain and floods, the air-raid shelters are in danger of being flooded. The existing technology generally uses ordinary pumps and valves for drainage. However, ordinary pumps and valves have slow response speeds and require a large impact force to respond. The drainage speed is not fast enough. In addition, the existing pumps and valves are usually electronically controlled. In the case of floods, they may fail and cannot be used. Summary of the invention

[0003] In order to make up for the deficiencies of the prior art, the present invention provides a technical solution for a high-protection-level underground civil air defense door sealing and leakage-free system.

[0004] The described high-protection-level underground civil air defense door sealing and leakage-free system is characterized in that it includes a water inlet channel, a first shell, a second shell and a third shell. A drainage channel connected to the end of the water inlet channel is arranged in the first shell, and a plurality of first one-way valves are arranged in the drainage channel; a second shell inner cavity is arranged in the upper part of the second shell, a first liner is arranged in the inner cavity of the second shell, an inlet channel connected to the water inlet channel is arranged at the lower end of the second shell, and a second one-way valve is arranged on the inlet channel; an intermediate layer is arranged in the third shell, the intermediate layer divides the inner cavity of the third shell into an upper inner cavity of the third shell and a lower inner cavity of the third shell, a diaphragm is arranged in the upper inner cavity of the third shell, and the diaphragm divides the upper inner cavity of the third shell into a third shell The upper part of the upper inner cavity and the lower part of the upper inner cavity of the third shell, the second inner liner is arranged in the upper part of the upper inner cavity of the third shell, the lower part of the upper inner cavity of the third shell is connected with the inner cavity of the second shell through a pipeline, a drainage hole is opened on one side of the lower part of the upper inner cavity of the third shell, the third valve stem is slidably inserted on the middle layer, the third valve stem is matched with the diaphragm, the upper end of the third valve stem is fixedly connected with the pressure block abutting against the lower end of the second inner liner, the lower inner cavity of the third shell is provided with a connected third shell water inlet and a third shell drainage port, the third shell water inlet is respectively connected with the drainage channel of the first shell and the drainage hole in the lower part of the upper inner cavity of the third shell through a pipeline, the third shell drainage port is externally connected with a vacuum drainage system, and the lower end of the third valve stem blocks the water inlet of the third shell.

[0005] The high-protection-level underground civil defense door sealing and leakage-free system is characterized in that the drainage channel in the first shell is an annular structure, and the first one-way valves are respectively arranged at the four corners of the drainage channel.

[0006] The described high-protection-level underground civil defense door sealing and leakage-proof system is characterized in that the drainage channel is a U-shaped structure, and a first shell water outlet is provided on the drainage channel, which is connected to the third shell water inlet through a pipe, and the first shell water outlet is located between the two first one-way valves at the upper end of the drainage channel.

[0007] The described high-protection-level underground civil defense door sealing and leakage-proof system is characterized in that the first one-way valve includes a first valve body, a first valve cover fixedly connected to the upper end of the first valve body, a first valve stem slidably inserted on the first valve cover, a first valve core fixedly connected to the first valve stem, and a first spring sleeved on the first valve stem, the two ends of the first spring are respectively connected to the first valve cover and the lower end of the first valve stem, and the first valve core blocks the passage between the first valve cover and the first valve body.

[0008] The described high-protection level underground civil defense door sealing and leakage-proof system is characterized in that the second one-way valve includes a second valve body, a second valve body shoulder arranged in the second valve body, a second valve stem slidably inserted in the second valve body shoulder, a second valve core fixedly connected to the upper end of the second valve stem, and a second spring sleeved on the second valve stem, the two ends of the second spring are respectively connected to the second valve body shoulder and the second valve core, and the second valve core blocks the upper opening of the channel of the second valve body.

[0009] The described high-protection-level underground civil defense door sealing and leakage-free system is characterized in that a second one-way valve flow channel is provided on the second valve stem, and the second one-way valve flow channel is respectively connected to the second shell inner cavity and the channel.

[0010] The described high-protection-level underground civil air defense door sealing and leakage-free system is characterized in that an air nozzle mechanism is arranged on the top of the first inner liner and the second inner liner.

[0011] The described high-protection-level underground civil defense door sealing and leakage-proof system is characterized in that a pressure plate is arranged at the upper end of the third valve stem, a diaphragm is clamped between the pressure plate and the pressure block, and the pressure block is locked by a nut screwed to the top of the third valve stem.

[0012] The described high-protection-level underground civil defense door sealing and leakage-proof system is characterized in that a third shell water inlet hole for communicating with the second shell inner cavity is provided in the upper part of the third shell upper inner cavity, and the diameter of the third shell water inlet hole is larger than the diameter of the drainage hole.

[0013] Compared with the prior art, the present invention is a purely mechanical structure, which can avoid leakage failure. Moreover, the present invention can realize the rapid opening and closing of the valve in the third shell, with fast response speed, large drainage volume, high drainage efficiency, and can quickly drain away even if only a small amount of water enters. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the first shell structure in the present invention;

[0016] Figure 3 for Figure 2 Enlarged view of point F in the middle;

[0017] Figure 4 It is a schematic diagram of the second shell structure in the present invention;

[0018] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0019] Figure 6 for Figure 4 Enlarged view of point C in the middle;

[0020] Figure 7 It is a schematic diagram of the third shell structure in the present invention;

[0021] Figure 8 for Figure 7 Enlarged view of point D in the middle;

[0022] Fig. 9 for Figure 7 Enlarged view of point E in the middle.

[0023] In the figure: water inlet channel 1, first shell 2, drainage channel 200, first shell water outlet 201, first one-way valve 3, first valve body 300, first valve cover 301, first valve stem 302, first valve core 303, first spring 304, second shell 4, second shell cavity 400, inlet channel 401, first liner 5, second one-way valve 6, second valve body 600, second valve body inner shoulder 601, second valve stem 602, second one-way valve To the valve flow channel 6020, the second valve core 603, the second spring 604, the third shell 7, the drain hole 700, the third shell water inlet 701, the third shell drain port 702, the third shell water inlet hole 703, the middle layer 8, the diaphragm 9, the second inner liner 10, the pressure block 11, the air nozzle mechanism 12, the pressure plate 13, the nut 14, the air-raid shelter 15, the underground passage 16, the civil defense door 17, the drain hole 18, the third valve stem 22, and the third valve core 23. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] like Figure 1-9As shown, a high-protection-level underground civil air-raid door sealing and leak-free system includes a water inlet channel 1, a first shell 2, a second shell 4 and a third shell 7. A drainage channel 200 connected to the end of the water inlet channel 1 is arranged in the first shell 2, and a plurality of first one-way valves 3 are arranged in the drainage channel 200. A second shell inner cavity 400 is provided at the upper part of the second shell 4, a first liner 5 is arranged in the second shell inner cavity 400, an inlet channel 401 connected to the water inlet channel 1 is provided at the lower end of the second shell 4, and a second one-way valve 6 is arranged on the inlet channel 401. An intermediate layer 8 is arranged in the third shell 7, and the intermediate layer 8 divides the inner cavity of the third shell 7 into an upper inner cavity of the third shell and a lower inner cavity of the third shell. A diaphragm 9 is arranged in the upper inner cavity of the third shell, and the diaphragm 9 divides the upper inner cavity of the third shell into an upper part of the upper inner cavity of the third shell and a lower part of the upper inner cavity of the third shell. A second liner 10 is arranged in the upper part of the upper inner cavity of the third shell, and the lower part of the upper inner cavity of the third shell is connected with the inner cavity of the second shell through a pipeline. A drainage hole 700 is arranged on one side of the lower part of the upper inner cavity of the third shell, and a one-way valve is arranged at the drainage hole 700. A third valve stem 22 is slidably inserted on the intermediate layer 8, and the lower end of the third valve stem 22 is fixedly connected to the third valve stem 22. The third valve core 23, the third valve stem 22 is connected with the diaphragm 9, the upper end of the third valve stem 22 is fixedly connected with the pressure block 11 which abuts against the lower end of the second inner tank 10, and the third shell water inlet 701 and the third shell drain port 702 which are connected are arranged on the lower inner cavity of the third shell. The third shell water inlet 701 is respectively connected with the drainage channel 200 of the first shell 2 and the drain hole 700 at the lower part of the upper inner cavity of the third shell through a pipe, and the third shell drain port 702 is externally connected with a vacuum drainage system, which is a well-known technology and can drain water quickly. The third valve core 23 at the lower end of the third valve stem 22 blocks the third shell water inlet 701.

[0026] As an optimized structure of the present invention: the drainage channel 200 in the first housing 2 is an annular structure, and first one-way valves 3 are respectively arranged at the four corners of the drainage channel 200, one of which is located at the connection between the drainage channel 200 and the water inlet channel 1. The advantage of setting four first one-way valves 3 is that when one or two of them are damaged, the whole can still be used.

[0027] As an optimized structure of the present invention: the drainage channel 200 is a U-shaped structure, and a first shell water outlet 201 connected to the third shell water inlet 701 through a pipeline is arranged on the drainage channel 200, and the first shell water outlet 201 is located between the two first one-way valves 3 at the upper end of the drainage channel 200.

[0028] As an optimized structure of the present invention: the first one-way valve 3 includes a first valve body 300, a first valve cover 301 fixedly connected to the upper end of the first valve body 300, a first valve stem 302 slidably inserted on the first valve cover 301, a first valve core 303 fixedly connected to the first valve stem 302 and a first spring 304 sleeved on the first valve stem 302, the two ends of the first spring 304 are respectively connected to the first valve cover 301 and the lower end of the first valve stem 302, and the first valve core 303 blocks the passage between the first valve cover 301 and the first valve body 300.

[0029] As an optimized structure of the present invention: the second one-way valve 6 includes a second valve body 600, a second valve body shoulder 601 arranged in the second valve body 600, a second valve stem 602 slidably inserted in the second valve body shoulder 601, a second valve core 603 fixedly connected to the upper end of the second valve stem 602 and a second spring 604 sleeved on the second valve stem 602, the two ends of the second spring 604 are respectively connected to the second valve body shoulder 601 and the second valve core 603, and the second valve core 603 blocks the upper opening of the channel of the second valve body 600.

[0030] As an optimized structure of the present invention: a second one-way valve flow channel 6020 is provided on the second valve stem 602, the second one-way valve flow channel 6020 is communicated with the second shell cavity 400 and the inlet channel 401 respectively, and the diameter of the second one-way valve flow channel 6020 is relatively small.

[0031] As an optimized structure of the present invention: an air nozzle mechanism 12 is set on the top of the first inner liner 5 and the second inner liner 10. The air nozzle mechanism 12 is a well-known technology. Its external column is screwed with the corresponding shell to adjust the position of the inner liner, and the air nozzle mechanism 12 can inflate the inner liner.

[0032] As an optimized structure of the present invention: a pressing plate 13 is provided at the upper end of the third valve stem 22 , the diaphragm 9 is sandwiched between the pressing plate 13 and the pressing block 11 , and the pressing block 11 is locked by a nut 14 screwed to the top of the third valve stem 22 .

[0033] As an optimized structure of the present invention: the third shell 7 has a third shell water inlet hole 703 disposed on the upper portion of the third shell upper inner cavity for communicating with the second shell inner cavity, and the diameter of the third shell water inlet hole 703 is larger than the diameter of the drain hole 700, so that water flowing to the upper portion of the third shell upper inner cavity through the third shell water inlet hole 703 will not be easily drained away by the drain hole 700. Correspondingly, the second shell 4 has a second shell water outlet 402 disposed on it for connecting with the third shell water inlet hole 703.

[0034] Working principle: A drainage hole 18 with a certain depth is provided at the position where the air-raid shelter 15 is provided with the air-raid shelter 15's underground passage 16, and the drainage hole 18 is connected with the water inlet passage 1 on the one hand, and is connected with the third shell water inlet 701 of the third shell 7 through a pipeline on the other hand. When water enters the underground passage 16, part of the water flows directly from the drainage hole 18 to the third shell water inlet 701, and the other part flows to the water inlet passage 1. Part of the water entering the water inlet passage 1 flows into the first shell 2, and flows to the first shell water outlet 201 of the first shell 2. The third shell water inlet 701, because the water will be instantly intercepted when impacting the first shell 2, the original impact force of the water is increased several times or even dozens of times and a shock wave is formed. This part of the water flows back into the second shell 4 to impact the first inner liner 5. The first inner liner 5 has high-pressure gas, which will produce vibration when impacted, so as to eliminate the wave (wave elimination means reducing the peak value of the water shock wave, and the average value remains unchanged). After the wave is eliminated, the water in the second shell 4 enters the third shell 7 through the second shell water outlet 402 and the third shell water inlet 703. At the lower part of the upper inner cavity of the third shell, water pushes up the diaphragm 9 at the upper end of the lower part of the upper inner cavity of the third shell, and the diaphragm 9 drives the third valve stem 22 to move upward, and the third valve core 23 at the lower end of the third valve stem 22 no longer blocks the water inlet 701 of the third shell, so that the water inlet 701 of the third shell is fully opened, and the water that previously flowed to the water inlet 701 of the third shell flows to the drain port 702 of the third shell through the water inlet 701 of the third shell and then is quickly discharged through the vacuum drainage system. In this process, the second liner 10 in the upper part of the upper inner cavity of the third shell is affected by the water. The impact will also produce vibrations. When the second liner 10 expands, it squeezes the pressing block 11. The pressing block 11 drives the third valve stem 22 to move down and re-block the water inlet 701 of the third shell. In this way, the water inlet 701 of the third shell will open and close at a higher frequency, and the opening amplitude does not need to be large. The water flowing to the water inlet 701 of the third shell will also be continuously drained away by the vacuum drainage system. If the water inlet 701 of the third shell is always open, the water sucked away by the vacuum drainage system will flow back again. Therefore, the water inlet 701 of the third shell needs to be opened and closed quickly. The water in the lower part of the upper inner cavity of the third shell flows to the water inlet 701 of the third shell through the drainage hole 700 and is also drained away. If the drainage hole 700 is blocked, the water in the lower part of the upper inner cavity of the third shell can flow back into the second shell inner cavity 400 and flow away through the second one-way valve flow channel 6020. During the whole process, the second housing 4 and its internal components play the role of storing energy and increasing the water impact force, which is equivalent to amplifying the water impact force several times or even dozens of times, thereby opening the third valve core 23 in the third housing 7. The greater the water impact force, the faster the discharge, but correspondingly, excessive impact force will also damage the device. The advantage of this device is that while increasing the water flow impact force, it can also eliminate water waves to reduce the damage of the water impact force to the device, and the present invention is a purely mechanical structure and will not fail due to leakage.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-protection-level underground air-defense door sealing and leakage-free system, characterized in that The invention comprises a water inlet channel (1), a first shell (2), a second shell (4) and a third shell (7); a drainage channel (200) communicating with the end of the water inlet channel (1) is arranged in the first shell (2); a plurality of first one-way valves (3) are arranged in the drainage channel (200); a second shell inner cavity (400) is provided at the upper part of the second shell (4); a first liner (5) is arranged in the second shell inner cavity (400); an inlet channel (401) communicating with the water inlet channel (1) is provided at the lower end of the second shell (4); a second one-way valve (6) is arranged on the inlet channel (401); an intermediate layer (8) is arranged in the third shell (7); the intermediate layer (8) divides the inner cavity of the third shell (7) into the third shell (7); and a plurality of first one-way valves (3) are arranged in the drainage channel (200); a second one-way valve (5) is arranged in the second shell inner cavity (400); and a third one-way valve (6) is arranged in the third shell (7); The third shell has an upper inner cavity and a lower inner cavity of the third shell, a diaphragm (9) is arranged in the upper inner cavity of the third shell, the diaphragm (9) divides the upper inner cavity of the third shell into an upper portion of the upper inner cavity of the third shell and a lower portion of the upper inner cavity of the third shell, a second inner liner (10) is arranged in the upper portion of the upper inner cavity of the third shell, the lower portion of the upper inner cavity of the third shell is connected to the inner cavity of the second shell via a pipeline, a drainage hole (700) is provided on one side of the lower portion of the upper inner cavity of the third shell, a third valve stem (22) is slidably inserted on the middle layer (8), the third valve stem (22) is cooperatively connected to the diaphragm (9), the upper end of the third valve stem (22) is fixedly connected to a pressing block (11) abutting against the lower end of the second inner liner (10), and a third shell water inlet (701) and a third shell water inlet (702) are provided on the lower inner cavity of the third shell. The third shell drainage port (702) and the third shell water inlet (701) are respectively connected to the drainage channel (200) of the first shell (2) and the drainage hole (700) at the lower part of the upper inner cavity of the third shell through pipes; the third shell drainage port (702) is externally connected to a vacuum drainage system; the lower end of the third valve stem (22) blocks the third shell water inlet (701); the drainage channel (200) in the first shell (2) is an annular structure; the four corners of the drainage channel (200) are respectively provided with first one-way valves (3); the drainage channel (200) is a U-shaped structure; the drainage channel (200) is provided with a first shell water outlet (201) connected to the third shell water inlet (701) through a pipe; the first shell The water outlet (201) is located between the two first one-way valves (3) at the upper end of the drainage channel (200); the first one-way valve (3) comprises a first valve body (300), a first valve cover (301) fixedly connected to the upper end of the first valve body (300), a first valve stem (302) slidably plugged on the first valve cover (301), a first valve core (303) fixedly connected to the first valve stem (302), and a first spring (304) sleeved on the first valve stem (302); two ends of the first spring (304) are respectively connected to the first valve cover (301) and the lower end of the first valve stem (302); the first valve core (303) blocks the channel between the first valve cover (301) and the first valve body (300);The second one-way valve (6) comprises a second valve body (600), a second valve body inner shoulder (601) arranged in the second valve body (600), a second valve stem (602) slidably plugged into the second valve body inner shoulder (601), a second valve core (603) fixedly connected to the upper end of the second valve stem (602), and a second spring (604) sleeved on the second valve stem (602), the two ends of the second spring (604) are respectively connected to the second valve body inner shoulder (601) and the second valve core (603), and the second valve core (603) blocks the upper opening of the channel of the second valve body (600). ; 2. A high-protection-level underground air-defense door sealing and leakage-free system according to claim 1, characterized in that: A second one-way valve flow channel (6020) is provided on the second valve stem (602), and the second one-way valve flow channel (6020) is respectively connected to the second shell inner cavity (400) and the inlet channel (401).

3. A high-protection-level underground civil air defense door sealing and leakage-free system according to any one of claim 1, characterized in that: An air nozzle mechanism (12) is provided on the top of the first inner liner (5) and the second inner liner (10).

4. A high-protection-level underground civil air defense door sealing and leakage-free system according to any one of claim 1, characterized in that: A pressing plate (13) is arranged at the upper end of the third valve stem (22), and the diaphragm (9) is sandwiched between the pressing plate (13) and the pressing block (11). The pressing block (11) is locked by a nut (14) screwed to the top of the third valve stem (22).

5. A high-protection-level underground civil air defense door sealing and leakage-free system according to any one of claim 1, characterized in that: A third shell water inlet hole (703) for communicating with the second shell inner cavity is provided at the upper portion of the third shell upper inner cavity of the third shell (7), and the diameter of the third shell water inlet hole (703) is greater than the diameter of the drainage hole (700).

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