Air supply device for emergency rescue in limited space

Abstract

The utility model discloses an air supply device for emergency rescue in a limited space and belongs to the technical field of fire-fighting equipment. Comprising a hollowed-out base, and a hollowed-out base emptying piece is arranged at the bottom of the hollowed-out base; the lower part of the shell covers the hollow base in a sleeving manner; the fan is arranged in a shell cavity of the shell, and an air outlet pipe of the fan is connected with a fire hose quick connector in a matched mode; the external air filtering mechanism is located at the right end of the shell cavity and fixed to the air inlet end of the air inlet pipe of the draught fan. The fire hose quick connector has the advantages that when the fire hose quick connector is used, external fresh air can be quickly, efficiently and continuously conveyed into a limited space under the action of the fire hose matched with the fire hose quick connector serving as an air supply pipe; good adaptability to a complex environment is embodied; the requirement of continuous and lasting uninterrupted air supply is met; the requirement of long-distance air supply to a target in a limited space can be met by virtue of the fire hose, and the safety can be fully guaranteed; the whole structure is simple and light, and the economical efficiency of manufacturing, the convenience of use and the convenience of daily maintenance are embodied.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fire fighting facilities, specifically relates to a limited space emergency rescue air supply device. BACKGROUND

[0002] The limited space encountered in the fire rescue process is mainly divided into underground limited space, ground limited space and closed facilities from the major categories. The underground limited space is such as basement, underground garage, underground pipeline, sewer, subway tunnel and the like. These spaces are closed or semi-closed, the import and export are limited, and the ventilation is poor, which is easy to cause the accumulation of toxic and harmful gases or insufficient oxygen content. The ground limited space is such as storage tank, tank car, reaction kettle, fermentation tank and the like. These spaces are located on the ground, but also have the closed nature, and harmful gas leakage may be caused by improper operation or equipment failure. The closed facilities are such as cabin, carriage, container and the like. The internal environment of these facilities may deteriorate due to changes in external conditions under the closed state, which poses a threat to the personnel entering.

[0003] When implementing rescue operation on the limited space not limited to the above examples, if the air supply is neglected, the life safety of the fire rescue personnel will be endangered due to oxygen deficiency.

[0004] The Chinese patent CN222278799U recommends a "fire engineering smoke exhaust ventilation device", which is designed for smoke exhaust ventilation, and thus does not have technical reference value for the limited space mentioned by the applicant above. The CN119191067A provides a "limited space operation emergency rescue device", which is composed of an above-ground end device and an underground end device. As can be known from paragraphs 0046 to 0047 of the specification of the patent, it does not have air supply function, and thus does not have enlightenment for the air supply of the limited space. In view of the foregoing, it has positive significance to explore an air supply device that is simple and reasonable in structure, does not have picky requirements for the nature and distance of the use site of the limited space, is easy to carry, can guarantee the concentration of air source during air supply, and thus can reflect the fast air replacement speed and short time. The technical solution to be introduced below is generated in this background. CONTENT OF THE UTILITY MODEL

[0005] The task of the utility model is to provide a limited space emergency rescue air supply device which is helpful to quickly and efficiently introduce fresh air from the outside into the limited space, so as to ideally displace harmful gases out of the limited space, is conducive to avoiding the interference of the rescue site environment, so as to reflect good adaptability to complex environment, is beneficial to meet the continuous and uninterrupted air supply requirements, so as to avoid time limitation, is convenient for randomly and reasonably changing the distance between the air supply and the gas supply according to whether the environment of the use site is safe, so as to guarantee safety, is good at guaranteeing the simplicity of the structure and the convenience of use, so as to reflect economy and easy operation and maintenance.

[0006] The utility model discloses a kind of air supply devices for limited space emergency rescue, including a hollow base, hollow base is set in the bottom of the hollow base and is used to make hollow base empty floor hollow base empty piece;A shell, the lower part of the shell is covered on the hollow base and is fixed with the periphery of hollow base;A fan, the fan is set in the shell cavity of shell and is fixed with the left end of hollow base towards one side, the fan inlet of fan is connected with the air inlet end of air inlet pipe by air inlet pipe transition connection pipe base, the fan outlet of fan is connected with the air outlet end of air outlet pipe by air outlet pipe transition connection pipe base, and the air outlet end of air outlet pipe is stretched to the shell cavity outside of shell front side wall of shell, and is connected with a fire hose quick coupling for fire hose connection in use state;An external air filtering mechanism, the external air filtering mechanism is located at the right end of the shell cavity and is fixed with the air inlet end of air inlet pipe.

[0007] In a specific embodiment of the utility model, the hollow base is in the shape of Chinese character Mu.

[0008] In another specific embodiment of the utility model, the external air filtering mechanism includes an air filter core block support seat and an air filter core block, an air inlet end adapter hole is formed in the air filter core block support seat, the air filter core block support seat is fixed with the air inlet end of air inlet pipe by the adapter of air inlet end and the air inlet end of air inlet pipe, the air filter core block is embedded in the filter core block frame, and the filter core block frame is embedded in the air filter core block support cavity of air filter core block support seat together with the air filter core block.

[0009] In yet another specific embodiment of the utility model, a filter core block frame limiting plate is provided around the periphery of the filter core block frame corresponding to the upper part of the filter core block frame, and the filter core block frame limiting plate is fixed with the filter core block frame by filter core block frame limiting plate screw.

[0010] In still another specific embodiment of the utility model, the air filter core block is a paper filter, a stainless steel mesh filter, a stainless steel mesh film filter or a copper powder sintered filter.

[0011] In still another specific embodiment of the present application, an electrical controller for controlling the operation of the fan is arranged in the housing cavity of the housing and at a position corresponding to the right end below of the air filter block support seat, the right end of the air filter block support seat is supported on the upper part of the electrical controller, and the bottom of the electrical controller is fixed with the right end of the hollow base; a power socket and a control panel of the structural system of the electrical controller are arranged on the right end of the housing front side wall of the housing towards the outside, and the power socket and the control panel are electrically connected with the electrical controller; a group of operation buttons are arranged on the control panel, wherein a housing accommodation notch is formed on the left end of the housing front side wall and at a position corresponding to the air outlet end of the air outlet pipe.

[0012] In still another specific embodiment of the present application, a handle is arranged on the upper part of the left side wall and the upper part of the right side wall of the housing and at corresponding positions.

[0013] In still another specific embodiment of the present application, the air inlet pipe transition connecting pipe seat and the air outlet pipe transition connecting pipe seat are each supported on the hollow base through a fan base for supporting the fan.

[0014] In still another specific embodiment of the present application, the bottom of the electrical controller is fixed with the right end of the hollow base through an electrical controller fixing seat.

[0015] In still another specific embodiment of the present application, the fan is an EC fan, an explosion-proof fan, an axial flow fan, a centrifugal fan, a duct fan, a mixed flow fan or a cross flow fan; and the hollow base empty piece is a height adjusting foot or a roller with a brake.

[0016] The technical effect of the technical scheme is that: since the fan can continuously work, fresh air outside can be quickly and efficiently and continuously transported into the limited space through the fire hose serving as the air supply pipe when the fire hose is connected with the quick connector of the fire hose; the utility model can be set according to the specific situation of the rescue site and can normally operate as long as the fire hose of the quick connector of the fire hose meets the air supply requirement of the target position, thus not being interfered by the environment of the rescue site, and good adaptability to complex environment is achieved; since the fan can continuously supply air from the beginning of operation to the end of operation, and the vehicle-mounted power supply can support for a long time, the condition of supporting the fan work is not affected by the power supply, the continuous and long-lasting uninterrupted air supply requirement can be met, and the air supply is not affected by time limit; since the position of the utility model can be changed according to the safety of the environment of the rescue site, the air supply requirement of the target in the limited space can be met by the fire hose, and safety can be fully ensured; since the overall structure is simple and relatively light, the economy of production, the convenience of use and the convenience of daily inspection and protection can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 An embodiment structure diagram of the utility model. DETAILED DESCRIPTION

[0018] In order to more clearly understand the technical essence and beneficial effects of the utility model, the applicant will make a detailed description in the form of examples below, but the description of the examples is not a limitation on the technical scheme of the utility model, and any equivalent transformation only in form but not in substance according to the concept of the utility model should be regarded as the technical scheme of the utility model.

[0019] In the following description, the directional or positional concepts of up, down, left, right, front and back are all based on the position state of the current Figure 1 , thus it cannot be understood as a special limitation on the technical scheme provided by the utility model.

[0020] Please refer to Figure 1The diagram shows a metal, frame-shaped, openwork base 1 with an levitation component 11 at its bottom for suspending the base above the ground. A housing 2 is shown, its lower part covering the openwork base 1 and fixed to its perimeter. A fan 3 is shown, housed within the housing cavity 21 of the housing 2 and fixed to the upward-facing left side of the openwork base 1. The fan inlet of the fan 3 is connected to the inlet pipe outlet of the inlet pipe 32 via an inlet pipe transition connection 31. The air outlet of the fan 3 is connected to the air inlet 341 of the air outlet pipe 34 via the air outlet pipe transition connecting pipe seat 33. The air outlet 342 of the air outlet pipe 34 extends out of the front side wall of the housing 2 and extends to the outside of the aforementioned housing cavity 21, and is equipped with a fire hose quick connector 3421 for connecting fire hoses in use. An external air filter mechanism 4 is shown. The external air filter mechanism 4 is located at the right end of the aforementioned housing cavity 21 and is fixed to the air inlet 322 of the air inlet pipe 32.

[0021] Depend on Figure 1 As shown, the aforementioned air inlet pipe transition connection seat 31 and the air inlet pipe outlet end 321 of the air inlet pipe 32 each form a flange edge, which is secured by the air inlet pipe outlet end flange edge clamp 3211. Figure 1 The image shows the air inlet duct outlet flange 323 located at the air inlet duct outlet 321 of the air inlet duct 32. Since the fixed connection between the aforementioned air outlet duct transition connection seat 33 and the opposite end of the air outlet duct inlet 341 of the air outlet duct 34 is the same as described above, the applicant will not repeat it here.

[0022] From the above description and the illustration, it can be seen that since the hollow base 1 is rectangular, or more specifically, cuboid, the shape of the shell 2 is adapted to the hollow base 1. Because the aforementioned hollow base levitation component 11 keeps the hollow base 1 and shell 2 suspended above the ground, there is no risk of the machine becoming stuck. During use, fresh outside air enters the shell cavity 21 from the space at the bottom of the hollow base 1, is filtered by the external air filter mechanism 4, and is supplied to the air inlet pipe 32. The air inlet pipe 32 is then introduced from the air inlet of the fan 3 through the air outlet end. Under the operation of the motor 36 of the fan 3, the fan 3 is in operation, and the air introduced through the air inlet pipe 32 is led out from the fan outlet to the air outlet pipe 34. The fire hose quick connector 3421, which is connected to the air outlet end 342 of the air outlet pipe, supplies the fire hose connected to it, and the fire hose delivers air to the confined space, that is, the fire hose transports outside air to the confined space.

[0023] The applicant needs to explain: the air outlet pipe 34 of the air outlet pipe 34 is matched with the fire hose quick connector 3421, so that the quick connector of one end of the fire hose is quickly and reliably connected with the fire hose quick connector 3421 on the rescue site, so as to play the role of the air supply pipe by the fire hose. This structure is pioneering. In addition, the adaptability of the fire hose to the environment is extremely high, for example, the application requirements of various different situations are met due to the characteristics of flexibility and the characteristics of basically unlimited length.

[0024] In this embodiment, the aforementioned hollow base 1 is in the shape of the Chinese character "Mu". However, if the horizontal bars of the hollow base 1 are increased or decreased in form rather than in actual change, making the "Mu" shape into a double "Mu" shape or a "Yi" shape, it should belong to equivalent technical means and still belong to the technical connotation category disclosed by the utility model.

[0025] The preferred structure of the aforementioned external air filtering mechanism 4, but not absolutely limited, is as follows: including an air filter block support seat 41 and an air filter block 42, an air inlet pipe inlet end adapter hole 411 is opened on the air filter block support seat 41, the air filter block support seat 41 is fixed with the air inlet pipe inlet end 322 by the adapter of the air inlet pipe inlet end adapter hole 411 and the air inlet pipe inlet end 322 of the aforementioned air inlet pipe 32, the air filter block 42 is embedded in the filter block frame 421, and the filter block frame 421 together with the air filter block 42 is embedded in the air filter block support seat cavity of the air filter block support seat 41.

[0026] As shown in Figure 1 A filter block frame limiting plate 4211 is arranged corresponding to the upper part of the aforementioned filter block frame 421 and around the four sides of the filter block frame 421, and the filter block frame limiting plate 4211 is fixed with the aforementioned filter block frame 421 by filter block frame limiting plate screws 42111.

[0027] In this embodiment, the aforementioned air filter block 42 is a stainless steel mesh filter, but it can also be a paper core, a sponge filter, a stainless steel mesh film filter, or a copper powder sintered filter, etc.

[0028] An electrical controller 5 for controlling the operation of the fan 3 is arranged in the shell cavity 21 of the shell 2 and at a position corresponding to the lower right end of the air filter block support seat 41, the right end of the air filter block support seat 41 is supported on the upper portion of the electrical controller 5, and the bottom of the electrical controller 5 is fixed to the right end of the hollow base 1; a power socket 51 and a control panel 52 of the structural system of the electrical controller 5 are arranged on the right end of the front side wall of the shell 2 towards the outside, and the power socket 51 and the control panel 52 are electrically connected to the electrical controller 5; a group of operation buttons 521 are arranged on the control panel 52, and a shell accommodation gap 23 is formed on the left end of the front side wall of the shell 2 and at a position corresponding to the air outlet end 342 of the air outlet pipe.

[0029] Preferably, a handle 22 is arranged on the upper portion of the left side wall and the upper portion of the right side wall of the shell 2 and at corresponding positions, specifically, a handle seat 221 is riveted on the upper portion of the left side wall and the upper portion of the right side wall of the shell 2 and at corresponding positions, and the handle 22 is pivotally arranged on the handle seat 221.

[0030] Preferably, the air inlet pipe transition connecting pipe seat 31 and the air outlet pipe transition connecting pipe seat 33 are each supported on the hollow base 1 through a fan base 35 for supporting the fan 3.

[0031] Preferably, the bottom of the electrical controller 5 is fixed to the right end of the hollow base 1 through an electrical controller fixing seat 53.

[0032] In the embodiment, the fan 3 is an EC fan, but it does not mean that the EC fan must be selected, for example, an explosion-proof fan, an axial flow fan, a centrifugal fan, a duct fan, a mixed flow fan or a cross flow fan, etc. can be used; the hollow base empty part 11 is a height adjustment foot or a roller with a brake, and the former is selected in the embodiment.

[0033] The fan is additionally provided with an air filter and a frequency converter starter, the air pressure is 0.32 MPa, the air flow is 260 m 3 / h, and the power of the frequency converter is 15 KW. Since the total weight of the whole machine is only 40 Kg, the machine can be conveniently mounted on or removed from a fire fighting vehicle.

[0034] The utility model discloses in practical application at least the following advantages are embodied: first, break the carrying limit. In the rescue vehicle reaches the scene, can directly lay fire hose, with fire hose as air delivery pipeline, can directly supply air after fire hose laying, need not the complicated additional facilities of routine hoisting gas cylinder or gallery air blower of time-consuming and complex, second, break the distance limit. Because fire hose lays how far, air can deliver how far, and the air supply is much smaller than water supply pressure loss. The experiment that the applicant made under the security measure shows that even if laying 100 meters (total five plates, i. e. every plate 20 meters), the end pressure can reach 0.3MPa, third, break the time limit. From starting operation to ending, can continuously supply air, vehicle-mounted generator works how long, and the air blowing and sending also correspondingly how long, fourth, break the airflow dispersion limit, install the lance at the end of fire hose, can be straight, can diffuse (also called'blooming '). While replacing air, can accurately cover the person trapped with positive pressure, or suppress the poisonous and harmful gas escape and drift, fifth, break the hidden danger limit, because can operate remotely on the spot, can avoid the explosion risk that the inflammable gas that may exist on the spot leads. Meanwhile, fire hose air supply occupies small space, has no noise, is more favorable to the operation of firemen. Remote air supply and after the outside air filtering mechanism 4 filter air, if so, when facing the pit bottom situation, then air is also safer, sixth, break the trouble limit of making. Because the utility model actually only needs to buy the required fan from the market, and the rest of the components can be improved by the technical personnel of the fire department.

[0035] When in use, after the fire rescue vehicle reaches the scene, the quick coupling joint at one end of the fire hose is connected with the fire hose quick connector 3421, and the lance at the other end of the fire hose is aimed at the limited space. Then the corresponding operation button 521 on the control panel 52 is operated, the motor 36 drives the fan 3 to work, the fresh air from the hollow base 1 enters the shell cavity 21, and then passes through the air filtering core block 42 of the outside air filtering mechanism 4, the air inlet end matching hole 411 of the air inlet pipe, the air inlet end 322 of the air inlet pipe, the air inlet pipe 32, the air inlet end 321 of the air outlet pipe, the air inlet pipe transition connecting pipe base 31, the air inlet of the fan, the air outlet of the fan, the air outlet pipe transition connecting pipe base 33, the air inlet end 341 of the air outlet pipe, the air outlet pipe 34, the air outlet end 342 of the air outlet pipe and the fire hose quick connector 3421, and finally is sprayed from the lance of the fire hose. When the rescue is completed, the corresponding operation button 521 is pressed, the electric controller 5 sends a command to stop the motor 36, the fan 3 stops working, and the previously laid fire hose is retracted.

[0036] In conclusion, the technical scheme provided by the utility model makes up for the shortcomings in the prior art, successfully completes the invention task, and truly realizes the technical effects described in the technical effect column above.

Claims

1. A ventilation device for emergency rescue in confined spaces, characterized in that: Including a hollow base (1), the bottom of the hollow base (1) is provided with a hollow base emptying part (11) for emptying the hollow base (1) from the ground; a shell (2), the lower part of the shell (2) is sleeved on the hollow base (1) and fixed with the periphery of the hollow base (1); a fan (3), the fan (3) is arranged in the shell cavity (21) of the shell (2) and fixed with the left end of the hollow base (1) towards the upper side, the fan inlet of the fan (3) is connected with the air inlet end (321) of the air inlet pipe (32) through the air inlet pipe transition connecting pipe base (31), the fan outlet of the fan (3) is connected with the air outlet pipe air inlet end (341) of the air outlet pipe (34) through the air outlet pipe transition connecting pipe base (33), and the air outlet pipe air outlet end (342) of the air outlet pipe (34) extends out of the shell front side wall of the shell (2) to the outside of the shell cavity (21), and is matched with a fire hose quick connector (3421) for connecting the fire hose in use; an external air filtering mechanism (4), the external air filtering mechanism (4) is located at the right end of the shell cavity (21) and fixed with the air inlet end (322) of the air inlet pipe (32).

2. The supply air device for emergency rescue in a limited space according to claim 1, characterized by: The hollow base (1) is in the shape of Chinese character Mu.

3. The supply air device for emergency rescue in a limited space according to claim 1, characterized by: The external air filtering mechanism (4) includes an air filter core supporting seat (41) and an air filter core (42), an air inlet end adapter hole (411) is formed in the air filter core supporting seat (41), the air filter core supporting seat (41) is fixed with the air inlet end (322) by the adapter of the air inlet end (322) and the air inlet end adapter hole (411), the air filter core (42) is embedded in the filter core frame (421), and the filter core frame (421) is embedded in the air filter core supporting seat cavity of the air filter core supporting seat (41) together with the air filter core (42).

4. The supply air device for emergency rescue in a limited space according to claim 3, characterized by: A filter core frame limiting plate (4211) is arranged around the periphery of the filter core frame (421) corresponding to the upper part of the filter core frame (421), and the filter core frame limiting plate (4211) is fixed with the filter core frame (421) by filter core frame limiting plate screws (42111).

5. The air supply device for emergency rescue in a limited space according to claim 3, characterized by: The air filter core (42) is a paper filter core, a stainless steel mesh filter core, a stainless steel mesh film filter core or a copper powder sintered filter core.

6. The supply air device for emergency rescue in a limited space according to claim 3, characterized by: An electrical controller (5) for controlling the operation of the fan (3) is arranged in the shell cavity (21) of the shell (2) and at a position below the right end corresponding to the air filter block support seat (41), the right end of the air filter block support seat (41) is supported on the upper part of the electrical controller (5), and the bottom of the electrical controller (5) is fixed with the right end of the hollow base (1); an electrical controller (5) structure system power socket (51) and a control panel (52) are arranged on the right end of the shell front side wall of the shell (2) towards the outside, the power socket (51) and the control panel (52) are electrically connected with the electrical controller (5); a group of operation buttons (521) are arranged on the control panel (52), wherein a shell accommodation notch (23) is formed on the left end of the shell (2) of the shell front side wall and at a position corresponding to the air outlet pipe air outlet end (342).

7. The supply air device for emergency rescue in a limited space according to claim 1 or 2, characterized by: A handle (22) is arranged on the upper part of the left side wall and the upper part of the right side wall of the shell (2) and at corresponding positions.

8. The supply air device for emergency rescue in a limited space according to claim 1, characterized by: The air inlet pipe transition connecting pipe seat (31) and the air outlet pipe transition connecting pipe seat (33) are each supported on the hollow base (1) through a fan base (35) for supporting the fan (3).

9. The supply air device for emergency rescue in a limited space according to claim 6, characterized by: The bottom of the electrical controller (5) is fixed with the right end of the hollow base (1) through an electrical controller fixing seat (53).

10. The supply air device for emergency rescue in a limited space according to claim 1, characterized by: The fan (3) is an EC fan, an explosion-proof fan, an axial flow fan, a centrifugal fan, a duct fan, a mixed flow fan or a cross flow fan; the hollow base empty part (11) is a height adjusting foot or a roller with a brake.

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