Air path switching device of long-pipe air supply breathing machine

Abstract

The utility model belongs to the technical field of breathing machines, and particularly relates to a long pipe air supply breathing machine air path switching device which comprises an air feeder, an oxygen tank, a long pipe assembly and a mask assembly, and is characterized in that the air feeder and the air outlet end of the oxygen tank are connected with the air inlet end of the long pipe assembly; the gas outlet end of the long pipe assembly is connected with the gas inlet end of the mask assembly, the long pipe assembly and the oxygen tank are provided with gas path switching devices, and the gas path switching devices achieve gas path on-off switching control between the oxygen tank and the mask assembly. According to the long-pipe oxygen supply device, the long-pipe air feeder and the long-pipe oxygen supply device are organically combined, advantage complementation is achieved through the air path switching device, the problems that in a closed space, a traditional long-pipe air feeder fails, safety is not guaranteed, and a traditional long-pipe oxygen supply machine is short in feeding distance, high in cost and the like are solved, long-distance air supply is achieved, and the long-pipe oxygen supply device is suitable for large-scale popularization and application. And the cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of breathing machine, concretely relates to a long pipe air supply breathing machine gas path switching device. BACKGROUND

[0002] There is oxygen deficiency phenomenon in the closed space operation, currently usually adopts the long pipe oxygen cylinder of operation personnel's back to enter the closed space with the face shield or adopts the air cleaning place from the ground to adopt the air blower or oxygen cylinder to match a long pipe, in the end of long pipe again match the face shield mode to satisfy oxygen demand, avoid the oxygen deficiency or poisoning phenomenon of operation personnel, but these equipment modes will have the following deficiencies, adopt the long pipe oxygen cylinder of operation personnel's back to match the face shield mode, there is long pipe oxygen cylinder very heavy, lead to the tired and inconvenient operation of operator, and oxygen duration is very short, adopt the air blower to match a long pipe and face shield mode, cannot ensure that the air blower fails, and the operator has life danger, adopt the oxygen cylinder to match a long pipe and face shield mode, still have the oxygen cylinder to need frequently switch, and the air supply is not far and the cost is high and the like, the above existing scheme all have the situation that cannot be used under the power failure, and the oxygen cylinder is not used for a long time, and the cost is high, and the use is limited. SUMMARY

[0003] To solve the problems in the background art, the utility model provides a long pipe air supply breathing machine gas path switching device, which has the characteristic of switchable gas path.

[0004] To achieve the above object, the utility model provides the following technical scheme: a long pipe air supply breathing machine gas path switching device, comprising an air blower, an oxygen tank, a long pipe assembly and a face shield assembly, characterized in that the air outlet end of the air blower and the oxygen tank is connected with the air inlet end of the long pipe assembly, the air outlet end of the long pipe assembly is connected with the air inlet end of the face shield assembly, a gas path switching device is arranged on the long pipe assembly and the oxygen tank, and the gas path switching device realizes the on-off switching control of the gas path between the oxygen tank and the face shield assembly.

[0005] According to some embodiments of the utility model, the long pipe assembly adopts a tee structure mode, comprising a tee joint, a first connecting pipe, a second connecting pipe and a third connecting pipe, one end of the first connecting pipe is connected with the air blower, the other end is connected with the tee joint, one end of the second connecting pipe is connected with the oxygen tank, the other end is connected with the tee joint, one end of the third connecting pipe is connected with the face shield assembly, the other end is connected with the tee joint, and a gas path switching device is arranged on the second connecting pipe and the oxygen tank.

[0006] According to some embodiments of the utility model, or, including first connecting pipe subassembly and second connecting pipe subassembly, first connecting pipe subassembly one end is connected with air supply machine, the other end is connected with face guard subassembly, second connecting pipe subassembly one end is connected with oxygen tank, the other end is connected with face guard subassembly, be provided with gas path switching device on second connecting pipe subassembly and oxygen tank.

[0007] According to some embodiments of the utility model, a long pipe air supply breathing machine gas path switching device, the gas path switching device includes second connecting pipe subassembly and oxygen tank control valve, the second connecting pipe subassembly includes second connecting pipe, bypass pipeline and control valve at least one of them, the control valve includes automatic control valve or manual control valve, the control valve is installed in series on second connecting pipe and bypass pipeline, realizes the gas path of oxygen tank and face guard subassembly with gas path switching device.

[0008] According to some embodiments of the utility model, the gas path switching device includes at least one of automatic switching mode, automatic switching mode collocation manual switching mode and manual switching mode, the automatic control valve adopts power-on normally closed control valve, the control valve opens when power off, the manual control valve, realizes the on-off through manual operation, and is normally closed when working, when the air supply machine fails, the automatic control valve is powered off and opens, and the gas pipeline is connected, and the air supply machine is replaced by the oxygen tank, when the automatic control valve also fails, the manual control valve is opened manually, and the manual control valve replaces the automatic control valve and realizes the gas pipeline connection.

[0009] According to some embodiments of the utility model, the first connecting pipe is provided with a check valve, and the check valve includes at least one of a one-way valve, an automatic control valve and a manual control valve, and the check valve prevents gas from flowing back to the air supply machine from the first connecting pipe.

[0010] According to some embodiments of the utility model, the long pipe assembly is provided with a pressure detection device.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] The utility model has the advantages that: BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the overall structure schematic view of embodiment 1 of the utility model;

[0014] Figure 2 It is Figure 1 the long pipe assembly structure schematic view of

[0015] Figure 3 For Figure 1 Mask assembly structure schematic view;

[0016] Figure 4 For the overall structure of the embodiment 2 of the utility model is schematic view;

[0017] Figure 5 For Figure 4 Mask assembly structure schematic view.

[0018] Reference numerals:

[0019] 1, air blower 2, oxygen tank 21, oxygen tank control valve 3, long tube assembly 31, first connecting pipe 311, stop valve 32, second connecting pipe 321, automatic control valve 322, bypass line 3221, manual control valve 33, tee joint 331, pressure gauge 34, third connecting pipe 4, mask assembly 41, air inlet pipe 42, joint 421, first air inlet hole 422, second air inlet hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Reference Figures 1 to 5 A long tube air supply breathing machine gas path switching device according to an embodiment of the utility model is described.

[0022] Embodiment 1

[0023] Reference Figures 1 to 3 A long tube air supply breathing machine gas path switching device according to an embodiment of the utility model is described.

[0024] As Figures 1 to 3 shown, in some embodiments, a long tube air supply breathing machine gas path switching device, including air blower 1, oxygen tank 2, long tube assembly 3 and mask assembly 4, the air outlet end of the air blower 1 and the oxygen tank 2 is connected with the air inlet end of the long tube assembly 3, the air outlet end of the long tube assembly 3 is connected with the air inlet end of the mask assembly 4, the long tube assembly 3 and oxygen tank 2 are provided with gas path switching device, the gas path switching device realizes the gas path on-off switching control between the oxygen tank 2 and the mask assembly 4.

[0025] Specifically, the long tube assembly 3 adopts a tee structure mode, the gas outlet end of the long tube assembly 3 is connected with the gas inlet end of the mask assembly 4, the gas inlet end of the long tube assembly 3 adopts a parallel branch structure mode, the gas inlet end of one branch is connected with the air outlet end of the air blower 1, the gas inlet end of the other branch is connected with the air outlet end of the oxygen tank 2, and the gas path switching device is arranged between the oxygen tank 2 and the branch of the tee joint 33.

[0026] By adopting the above technical scheme, in actual use, the air blower 1, the long tube assembly 3 and the mask assembly 4 are matched with a conventional use mode to realize long-distance air supply and cost saving, and in case of failure of the air blower 1, the oxygen tank 2, the long tube assembly 3 and the mask assembly 4 are matched with an emergency state switching mode to ensure long-distance oxygen supply and safety of the operating personnel.

[0027] Further, the gas path switching device comprises a second connecting pipe assembly and an oxygen tank control valve 21, the second connecting pipe assembly comprises at least one of a second connecting pipe 32, a bypass pipe 322 and a control valve, the control valve is installed in series on the second connecting pipe 32 and the bypass pipe 322, the control valve comprises an automatic control valve 321 or a manual control valve 3221, the automatic control valve 321 and the bypass pipe 322 are arranged in parallel on the second connecting pipe 32, and the manual control valve 3221 is installed in series on the bypass pipe 322, so that the gas path switching device realizes the on-off of the gas path between the oxygen tank 2 and the mask assembly 4.

[0028] Further, the gas path switching device comprises at least one of automatic switching, automatic switching matched with manual switching and manual switching, the automatic control valve 321 adopts a normally closed control valve that is turned on when powered off, the manual control valve 3221 is turned on and off through manual operation and is normally closed in working, when the air blower 1 fails, the automatic control valve 321 is turned on when powered off, the gas pipe is connected, and the oxygen tank 2 replaces the air blower 1 to supply air, when the automatic control valve 321 also fails, the manual control valve 3221 is manually turned on, and the manual control valve 3221 replaces the automatic control valve 321 to realize the connection of the gas pipe.

[0029] Further, in some embodiments, the automatic control valve 321 adopts a normally closed automatic control valve 321 that is turned on when powered off, and the manual control valve 3221 is turned on and off through manual operation and is normally closed in working, when the air blower 1 fails, the automatic control valve 321 is turned on when powered off, the gas pipe is connected, and the oxygen tank 2 replaces the air blower 1 to supply air, when the automatic control valve 321 also fails, the manual control valve 3221 is manually turned on, and the manual control valve 3221 replaces the automatic control valve 321 to realize the connection of the gas pipe, ensuring the safety of the operator.

[0030] Further, in some embodiments, a flow stop valve 311 is arranged on the first connecting pipe 31 of the long pipe assembly 3, the flow stop valve 311 includes at least one of a one-way valve, an automatic control valve 321 and a manual control valve 3221, the flow stop valve 311 prevents gas from flowing back to the air blower 1 from the long pipe assembly 3, avoiding the oxygen in the pipeline from flowing back from the first connecting pipe 31 when the air blower 1 fails, and ensuring the safety of the workers in the closed space.

[0031] In some embodiments, the long pipe assembly 3 is provided with a pressure detection device 331 to display the air pressure in the pipeline in real time, ensuring that enough air is delivered to the workers at a long distance.

[0032] By using the above technical scheme, normal use state can be achieved by the air blower 1 through the first connecting pipe 31 of the long pipe assembly 3, the three-way joint 4233, the third connecting pipe 34 and the mask assembly 4 to achieve long-distance air supply, while avoiding the problem of oxygen deficiency of workers in a closed space in case the air blower 1 fails, and ensuring the safety of the workers in the closed space. Specifically, if the air blower 1 fails, the automatic control valve 321 of the air path switching device detects a significant change in the current of the air blower 1 or a sudden change in power from large to small, or the device suddenly becomes in an unpowered state, the automatic control valve 321 is opened, the oxygen in the oxygen tank 2 flows into the three-way joint 4233 through the automatic control valve 321, and finally flows into the mask assembly 4, achieving emergency oxygen supply and ensuring the safety of the workers in the closed space.

[0033] Embodiment 2

[0034] As shown in Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that the long pipe assembly 3 has a different composition. The long pipe assembly 3 and the mask assembly 4 are connected in a parallel structure with two long pipes. For the sake of understanding, the two long pipes are referred to as the first connecting pipe assembly and the second connecting pipe assembly. Specifically, the air inlet end of the first connecting pipe assembly is connected to the air outlet end of the air blower 1, and the air outlet end is directly connected to the first air inlet hole 421 of the air inlet pipe joint 42 of the mask assembly 4. The air inlet end of the second connecting pipe assembly is connected to the air outlet end of the oxygen tank 2, and the air outlet end is directly connected to the second air inlet hole 422 of the air inlet pipe joint of the mask assembly. An air path switching device is arranged on the second connecting pipe assembly and the oxygen tank.

[0035] In some embodiments, the air blower 1, the long pipe assembly 3 and the mask assembly 4 are used in a conventional mode to achieve long-distance air supply and save costs. In case the air blower 1 fails, the oxygen tank 2, the long pipe assembly 3 and the mask assembly 4 can be used in an emergency state switching mode to ensure long-distance oxygen supply and the safety of the workers.

[0036] Further, the gas path switching device comprises a second connecting pipe assembly and an oxygen tank control valve 21, the second connecting pipe assembly comprises a second connecting pipe 32, a bypass pipe 322 and at least one of a control valve, the control valve is installed in series on the second connecting pipe 32 and the bypass pipe 322, the control valve comprises an automatic control valve 321 or a manual control valve 3221, the automatic control valve 321 and the bypass pipe 322 are arranged in parallel on the second connecting pipe 32, and the manual control valve 3221 is installed in series on the bypass pipe 322, and the gas path switching device is used for realizing gas path on-off between the oxygen tank 2 and the mask assembly 4.

[0037] Further, the gas path switching device comprises at least one of an automatic switching mode, an automatic switching mode, a manual switching and a manual switching mode, the automatic control valve 321 adopts a normally closed control valve, the control valve is opened when power is off, the manual control valve 3221 is opened and closed through manual operation, and is normally closed in working, when the air blower 1 fails, the automatic control valve 321 is powered off and opened, the gas pipe is connected, and the air supply is replaced by the oxygen tank 2, when the automatic control valve 321 also fails, the manual control valve 3221 is manually opened, and the manual control valve 3221 replaces the automatic control valve 321 to realize the connection of the gas pipe, and the safety of the operator is ensured.

[0038] In some embodiments, the long pipe assembly 3 is provided with a pressure detection device 331, which can display the pipe pressure in real time and ensure that enough air is supplied to the air demand of the personnel working at a long distance.

[0039] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A long tube ventilation breathing machine gas path switching device, comprising a blower, an oxygen tank, a long tube assembly and a mask assembly, characterized in that, The outlet of the blower and the oxygen tank is connected to the inlet of the long tube assembly, and the outlet of the long tube assembly is connected to the inlet of the mask assembly. The long tube assembly and the oxygen tank are equipped with an air path switching device, which realizes the on / off switching control of the air path between the oxygen tank and the mask assembly.

2. The long tube ventilation breathing machine gas path switching device according to claim 1, characterized in that, The long tube assembly adopts a three-way structure, including a three-way connector, a first connecting tube assembly, a second connecting tube assembly, and a third connecting tube. One end of the first connecting tube assembly is connected to the blower, and the other end is connected to the three-way connector. One end of the second connecting tube assembly is connected to the oxygen tank, and the other end is connected to the three-way connector. One end of the third connecting tube is connected to the mask assembly, and the other end is connected to the three-way connector. Gas path switching devices are provided on the second connecting tube assembly and the oxygen tank.

3. The long tube ventilation breathing machine gas path switching device according to claim 1, characterized in that, The long tube assembly includes a first connecting tube assembly and a second connecting tube assembly. One end of the first connecting tube assembly is connected to the blower and the other end is connected to the mask assembly. One end of the second connecting tube assembly is connected to the oxygen tank and the other end is connected to the mask assembly. Gas path switching devices are provided on the second connecting tube assembly and the oxygen tank.

4. A long tube ventilation breathing machine gas path switching device according to any one of claims 2 or 3, characterized in that, The gas path switching device includes a second connecting pipe assembly and an oxygen tank control valve. The second connecting pipe assembly includes at least one of a second connecting pipe, a bypass pipe, and a control valve. The control valve includes an automatic control valve or a manual control valve. The control valve is installed in series on the second connecting pipe and the bypass pipe. The gas path switching device enables the switching of the gas path between the oxygen tank and the mask assembly.

5. The long tube ventilation gas path switching device according to claim 4, wherein, The gas path switching device includes at least one of the following modes: automatic switching, automatic switching combined with manual switching, and manual switching. The automatic control valve is a normally closed control valve that is energized. When the power is off, the control valve opens. The manual control valve is opened and closed by manual operation. It is normally closed during operation. When the blower fails, the automatic control valve is de-energized and opens, connecting the gas pipeline and allowing the oxygen tank to replace the blower for gas supply. When the automatic control valve also fails, the manual control valve is manually opened, replacing the automatic control valve to connect the gas pipeline.

6. A long tube ventilation breathing machine gas path switching device according to any one of claims 2 or 3, characterized in that, The first connecting pipe assembly includes a first connecting pipe and a check valve. The check valve includes at least one of a one-way valve, an automatic control valve, and a manual control valve. The check valve prevents gas from flowing back from the first connecting pipe to the blower.

7. A long tube ventilation breathing machine gas path switching device according to any one of claims 2 or 3, characterized in that, The long tube assembly is equipped with a pressure detection device.

Images