Liquid drainage assembly and fire fighting device

Abstract

The utility model relates to the field of fire fighting, and provides a liquid drainage assembly and a fire fighting device. The liquid discharging assembly is used for discharging residual liquid in the fire fighting device, the fire fighting device is provided with a pumping device and a water supply valve arranged at a liquid outlet of the pumping device, and the fire fighting device comprises a water discharging valve used for being connected with the fire fighting device and discharging the residual liquid in the fire fighting device; the first detection device is used for being connected with the pumping device and detecting the start-stop state of the pumping device; the second detection device is used for being connected with a water supply valve of the fire fighting device and detecting the opening and closing state of the water supply valve, and the water supply valve is arranged at a liquid outlet of the pumping device; the control assembly is connected with the drainage valve, the first detection device and the second detection device, and the control assembly is arranged to be capable of controlling opening and closing of the drainage valve. And the drainage assembly can control the drainage valve to be opened to drain residual liquid after the fire fighting device finishes operation, so that manual intervention is reduced, and the problem that the drainage valve is easy to omit due to manual operation can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting, in particular to a liquid discharge component and a fire fighting device. Background Art

[0002] After the firefighting system such as fire trucks completes its operation, there is still residual liquid such as water or foam mixture in the firefighting pipelines and water pumps. The residual liquid can easily cause the pipes, drain valves and water pumps to freeze or rust, affecting the reliability of normal firefighting operations. In order to discharge the residual liquid in the firefighting device, the firefighting device is usually equipped with a drain valve. After the firefighting operation is completed, the operator opens the drain valve to drain the residual liquid in the firefighting device through the drain valve. However, due to the large number of drain valves, after the firefighting operation is completed, the operator may miss some drain valves when opening the drain valve, resulting in incomplete discharge of the residual liquid in the firefighting system. Utility Model Content

[0003] The utility model provides a drainage component and a fire-fighting device, which are used to solve or improve the defect in the related technology that an operator may miss individual drainage valves when opening the drainage valves, thereby achieving the effect of reducing the missed drainage valves.

[0004] The utility model provides a liquid discharge assembly for discharging residual liquid in a fire-fighting device, wherein the fire-fighting device comprises a pumping device and a water supply valve arranged at a liquid outlet of the pumping device. The liquid discharge assembly comprises:

[0005] A drain valve, the drain valve is used to be connected to the fire-fighting device and discharge the remaining liquid in the fire-fighting device;

[0006] A first detection device, the first detection device is used to be connected to the pumping device and detect the start and stop status of the pumping device;

[0007] A second detection device, the second detection device is used to be connected to the water supply valve and detect the opening and closing state of the water supply valve;

[0008] A control component, wherein the control component is connected to the drain valve, the first detection device and the second detection device, and the control component is configured to control the opening and closing of the drain valve.

[0009] According to a drainage assembly provided by the utility model, the fire-fighting device also has a pipeline, and the water supply valve, the pumping device and the pipeline are all connected to the drainage valve.

[0010] According to a drainage component provided by the utility model, the pipeline includes a curved pipe section, both ends of the curved pipe section are respectively connected to other pipe sections of the pipeline, the middle part of the curved pipe section is bent downward, and the lowest point of the downward bend of the curved pipe section is connected to the drain valve.

[0011] According to a liquid drainage assembly provided by the utility model, the water supply valve, the pumping device and the pipeline are all connected to the drainage valve through corresponding hoses.

[0012] A drainage assembly provided by the utility model also includes a purge assembly, which is connected to the fire-fighting device and is used to blow purge gas into the fire-fighting device. The purge assembly is connected to the control assembly, and the control assembly is configured to control the start and stop of the purge assembly.

[0013] According to a drainage assembly provided by the utility model, the purge assembly includes a gas container and a switch valve, the gas container is used to contain the purge gas, the gas container is connected to the fire-fighting device through the switch valve, the switch valve is used to control the connection or disconnection between the gas container and the fire-fighting device, and the switch valve is connected to the control assembly.

[0014] According to a discharge assembly provided by the utility model, it also includes a first one-way valve, the purge assembly is connected to the fire-fighting device through the first one-way valve, and the first one-way valve is configured to be able to conduct along the direction from the purge assembly to the fire-fighting device.

[0015] According to a liquid discharge assembly provided by the utility model, it also includes a gas processing assembly, the gas processing assembly is connected to the purge assembly, and the gas processing assembly is used to filter the purge gas.

[0016] According to a liquid drainage assembly provided by the utility model, the drainage valve is provided with a handle for an operator to operate, and the handle can control the opening and closing of the drainage valve.

[0017] The utility model also provides a fire-fighting device, comprising a pumping device, a water supply valve and the above-mentioned liquid discharge assembly, wherein the water supply valve is arranged at the liquid outlet of the pumping device.

[0018] The liquid discharge assembly provided by the utility model is connected to the fire-fighting device through a drain valve and can discharge the residual liquid in the fire-fighting device. The first detection device is connected to the pumping device of the fire-fighting device and can detect the start and stop status of the pumping device. The second detection device is connected to the water supply valve of the fire-fighting device and can detect the opening and closing status of the water supply valve. The control assembly is connected to the drain valve, the first detection device and the second detection device, and can control the opening and closing of the drain valve. For example, when the control assembly determines that the pumping device stops and the water supply valve is closed, the drain valve is controlled to open to discharge the residual liquid in the fire-fighting device.

[0019] With such arrangement, the drain assembly provided by the utility model controls the drain valve to open through the control assembly, thereby discharging the remaining liquid in the fire-fighting device, thereby reducing manual intervention and further reducing the problem of easily missing the drain valve during manual operation.

[0020] The fire fighting device provided by the utility model includes the liquid discharge component provided by the utility model, and thus includes all the above advantages of the liquid discharge component. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the structure of the fire-fighting device provided in some embodiments of the utility model;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the fire-fighting device provided in some embodiments of the utility model;

[0024] Figure 3 yes Figure 2 Schematic diagrams of other angles of the fire-fighting equipment shown;

[0025] Figure 4 It is a schematic diagram of the structure of the connection between the detection device and the control component provided in some embodiments of the utility model.

[0026] Reference numerals:

[0027] 1. Drain valve; 2. Pumping device; 3. Water supply valve; 4. First detection device; 5. Second detection device; 6. Control component; 601. Comparison circuit; 602. AND gate circuit; 7. Pipeline; 8. Hose; 9. Gas container; 10. Switch valve; 11. First one-way valve; 12. Gas processing component; 13. Second one-way valve. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the related art, in order to discharge the residual liquid in the fire-fighting pipeline, a drain valve is usually provided on the fire-fighting pipeline. After the fire-fighting operation is completed, the operator opens the drain valve to discharge the residual liquid in the pipeline, drain valve or water pump through the drain valve. However, due to the large number of drain valves, after the fire-fighting operation is completed, the operator may miss some drain valves when opening the drain valve, resulting in incomplete discharge of the residual liquid in the fire-fighting system.

[0030] In order to solve or improve the technical problem in the related art that an operator may miss individual drain valves when opening the drain valves and achieve the technical effect of reducing the missed drain valves, a drainage assembly and a fire-fighting device are provided in an embodiment of the utility model.

[0031] Reference below Figure 1-Figure 4 The liquid discharge assembly provided in the embodiment of the utility model is described.

[0032] Specifically, the drain assembly is used to drain the remaining liquid in the fire-fighting device, and the drain assembly includes a drain valve 1, a first detection device 4 and a second inspection device.

[0033] The drain valve 1 is used to be connected to the fire-fighting device and to discharge the residual liquid in the fire-fighting device. Optionally, the drain valve 1 is configured as an electric valve or a pneumatic valve.

[0034] The first detection device 4 is used to be connected to the pumping device 2 of the fire fighting device and detect the start and stop status of the pumping device 2. Optionally, the pumping device 2 may be a water pump.

[0035] Optionally, the first detection device 4 may be a rotation speed sensor, which is connected to the pumping device 2 to detect the rotation speed of the pumping device 2, or the rotation speed sensor is connected to the driving device of the pumping device 2 to detect the rotation speed of the driving device, and the driving device may be a motor or a fuel engine of an operating machine. In this way, the state of the pumping device 2 can be obtained based on the rotation speed of the pumping device 2 or the rotation speed of the driving device.

[0036] Of course, for a driving device configured as a motor, the first detection device 4 can also be configured as a current detection device or a voltage detection device. The first detection device 4 is connected to the motor and is used to detect the voltage or current of the motor. The start and stop status of the pumping device 2 can also be obtained based on the voltage or current of the motor.

[0037] The first detection device 4 is not limited to the above-mentioned speed sensor, current detection device or voltage detection device. For example, the first detection device 4 can also be a pressure detection device. The pressure detection device is connected to the liquid outlet of the pumping device 2 to detect the pressure of the liquid outlet of the pumping device 2. The start and stop status of the pumping device 2 can also be obtained through the pressure value of the liquid outlet.

[0038] The second detection device 5 is used to connect with the water supply valve 3 of the fire-fighting device and detect the opening and closing state of the water supply valve 3. The water supply valve 3 is arranged at the liquid outlet of the pumping device 2. The water supply valve 3 is used to connect to devices such as fire monitors or fire hoses and supply water to the devices.

[0039] Optionally, the water supply valve 3 can be a solenoid valve or a pneumatic valve, and the second detection device 5 is configured as a signal return device of the water supply valve 3, which can obtain the opening and closing status of the water supply valve 3. It should be noted that the relevant principles of the signal return device belong to the content of the relevant technology. This application does not involve improvements to the structure and principles of the signal return device, which will not be elaborated on.

[0040] Of course, for the water supply valve 3 configured as a solenoid valve, the second detection device 5 can also be configured as a current detection device or a voltage detection device connected to the solenoid valve to obtain the opening and closing state of the water supply valve 3 through current or voltage.

[0041] For the water supply valve 3 configured as a pneumatic valve, the second detection device 5 can also be configured as a pressure detection device, which is connected to the pneumatic drive unit of the pneumatic valve to detect the pressure of the pneumatic drive unit. The opening and closing state of the pneumatic valve can be obtained through the pressure of the pneumatic drive unit.

[0042] The control component 6 is connected to the drain valve 1, the first detection device 4 and the second detection device 5, and the control component 6 is configured to control the opening and closing of the drain valve 1. For example, when the control component 6 determines that the pumping device 2 stops and the water supply valve 3 is closed, the drain valve 1 is controlled to open.

[0043] Optionally, the control component 6 may include a comparison circuit 601 and an AND gate circuit 602. The number of comparison circuits 601 is set to two, the input ends of the two comparison circuits 601 are respectively connected to the first detection device 4 and the second detection device 5, the output ends of the two comparison circuits 601 are connected to the AND gate circuit 602, the output end of the AND gate circuit 602 is connected to the drain valve 1, and controls the drain valve 1 to open and close.

[0044] In the process of data processing by the control component 6, the comparison circuit 601 connected to the first detection device 4 compares the first detection data transmitted by the first detection device 4 with the first preset data, and outputs a high level or a low level accordingly. For example, when the first detection data is greater than the first preset data, the pumping device 2 is in a shutdown state, and the comparison circuit 601 connected to the first detection device 4 outputs a high level. When the pumping device 2 is in a shutdown state and the comparison circuit 601 outputs a high level, what size relationship should be satisfied between the first detection data and the first preset data can be set according to actual needs. The assumption here is only for the convenience of introducing the principle of the control component 6, and is not a limitation on the control component 6.

[0045] The comparison circuit 601 connected to the second detection device 5 compares the second detection data transmitted by the second detection device 5 with the second preset data, and outputs a high level or a low level accordingly. For example, when the second detection data is greater than the second preset data, the water supply valve 3 is in a closed state, and the comparison circuit 601 connected to the second detection device 5 outputs a high level. When the water supply valve 3 is in a closed state and the comparison circuit 601 outputs a high level, what size relationship needs to be satisfied between the second detection data and the second preset data can be set according to actual needs. The assumption here is only for the convenience of introducing the principle of the control component 6, and is not a limitation on the control component 6.

[0046] When both comparison circuits 601 output high levels, it indicates that the pumping device 2 is in a stopped state and the water supply valve 3 is in a closed state, and the AND gate circuit 602 sends a control signal to the drain valve 1 to control the drain valve 1 to open.

[0047] With such arrangement, the drainage assembly provided in the embodiment of the utility model controls the drain valve 1 to open through the control assembly 6 to discharge the remaining liquid in the fire-fighting device, thereby reducing manual intervention and further reducing the problem of easily missing the drain valve 1 during manual operation.

[0048] In some embodiments provided by the present utility model, the water supply valve 3 , the pumping device 2 and the pipeline 7 of the fire-fighting device are all connected to the drain valve 1 .

[0049] In this embodiment, by connecting the water supply valve 3, the pumping device 2 and the pipe 7 to the drain valve 1, on the one hand, the residual liquid inside the water supply valve 3, the pumping device 2 and the pipe 7 can be discharged through the drain valve 1 at the same time, thereby improving the efficiency of residual liquid discharge. On the other hand, the number of drain valves 1 in the drain assembly can be reduced, thereby reducing the cost of the drain assembly.

[0050] In some embodiments provided by the present invention, the pipeline 7 includes a curved pipe section. Both ends of the curved pipe section are respectively connected to other pipe sections of the pipeline 7, the middle of the curved pipe section is bent downward, and the lowest point of the curved pipe section is connected to the drain valve 1.

[0051] In this embodiment, for reasons such as avoidance, the pipe 7 of the fire fighting device includes the curved pipe section, and the residual liquid retained in the curved pipe section is not easy to be discharged. By connecting the lowest point of the downwardly curved part of the curved pipe section to the drain valve 1, the residual liquid in the curved pipe section can be completely discharged, solving the problem that the water in the curved pipe section is not easy to be discharged.

[0052] In some embodiments provided by the present utility model, the water supply valve 3 , the pumping device 2 and the pipeline 7 are all connected to the drain valve 1 through corresponding hoses 8 .

[0053] In this embodiment, the water supply valve 3, the pumping device 2 and the pipe 7 are connected to the drain valve 1 through the corresponding hose 8. Since the hose 8 is flexible, it can better avoid the components of the fire-fighting device, reduce the problem of interference between the hose 8 and the components of the fire-fighting device, and thus make it easier to lay out the hose 8, thereby reducing the difficulty of arranging the drainage component. In addition, the setting position of the drain valve 1 is more flexible.

[0054] Furthermore, the drainage assembly further includes a second one-way valve 13. All the hoses 8 are connected to the drain valve 1 through the corresponding second one-way valve 13, and the drain valve 1 is connected to the outlet of the second one-way valve 13. This arrangement can prevent foreign debris from entering the hose 8 through the drain valve 1 when the drain valve 1 is opened, causing the hose 8 to be blocked.

[0055] In some embodiments provided by the present invention, the drain assembly also includes a purge assembly.

[0056] The purge assembly is connected to the fire fighting device, and the purge assembly is used to supply air into the fire fighting device. The purge assembly is connected to the control assembly 6, and the control assembly 6 is configured to control the start and stop of the purge assembly.

[0057] In this embodiment, by providing a purge assembly to purge the fire-fighting device, on the one hand, the remaining liquid in the fire-fighting device can be discharged more quickly, and on the other hand, the remaining liquid accumulated in the fire-fighting device can be reduced, thereby improving the dryness inside the fire-fighting device.

[0058] Optionally, after the control component 6 controls the drain valve 1 to open for a preset time period, the control component 6 controls the purge component to open.

[0059] Optionally, the purge assembly is connected to the drain valve 1, and the purge gas provided by the purge device enters the pipe 7 and the pumping device 2 through the drain valve 1, and is finally discharged from the drain valve 1. Of course, the drain valve 1, the pipe 7 and the pumping device 2 can also be connected to the purge assembly, so that the drain valve 1, the pipe 7 and the pumping device 2 are purged simultaneously by the purge assembly, thereby improving the purge efficiency.

[0060] In some embodiments provided by the present utility model, the purge assembly includes a gas container 9 and a switch valve 10 .

[0061] The gas container 9 is used to contain the purge gas. The gas container 9 is connected to the fire-fighting device through the switch valve 10, and the switch valve 10 is used to control the connection or disconnection between the gas container 9 and the fire-fighting device. The switch valve 10 is connected to the control component 6, and the control component 6 is used to control the opening and closing of the switch valve 10. Optionally, the switch valve 10 can be a solenoid valve or a pneumatic valve.

[0062] In this embodiment, when the fire-fighting device needs to be purged, the control component 6 controls the switch valve 10 to open, and after the purging is completed, the control component 6 controls the switch valve 10 to close.

[0063] Optionally, when the liquid discharge assembly is provided on a fire truck, the gas container 9 may be a gas cylinder on the chassis of the vehicle.

[0064] In some embodiments provided by the utility model, the drain assembly further includes a first one-way valve 11. The purge assembly is connected to the fire-fighting device through the first one-way valve 11. The first one-way valve 11 is configured to be able to conduct along the direction from the purge assembly to the fire-fighting device. For example, the first one-way valve 11 is disposed between the switch valve 10 and the fire-fighting device.

[0065] In this embodiment, by providing a first one-way valve 11 between the purge assembly and the fire-fighting device, it is possible to prevent water or fire-fighting foam in the fire-fighting device from entering the purge assembly during the operation of the fire-fighting device.

[0066] In some embodiments provided by the present invention, the liquid discharge assembly further includes a gas processing assembly 12. The gas processing assembly 12 is connected to the purge assembly, and the gas processing assembly 12 is used to filter the purge gas.

[0067] In this embodiment, the purge gas can be filtered by the gas processing component 12 to reduce the deposition of impurities in the purge gas in the pipeline of the drainage component or the drain valve 1, thereby reducing the problem of clogging of the pipeline or the drain valve 1.

[0068] Optionally, the gas processing assembly 12 includes a pressure reducing valve and a filter, and the pressure reducing valve is used to reduce the pressure of the purge gas in the gas container 9, and the filter is used to filter the purge gas.

[0069] Optionally, the gas processing assembly 12 is disposed between the switch valve 10 and the gas container 9 , thereby also being able to reduce the problem of impurities in the purge gas being deposited in the switch valve 10 .

[0070] In some embodiments provided by the present utility model, the drain valve 1 is provided with a handle for the operator to operate. The handle can control the opening and closing of the drain valve 1.

[0071] In this embodiment, the drain valve 1 is provided with a handle for the operator to operate, that is, the drain valve 1 has a manual function. In this way, when there is no power or a power failure, the operator can manually open the drain valve 1 to discharge the remaining liquid in the fire-fighting device, thereby improving the flexibility of use of the drain component.

[0072] An embodiment of the utility model also provides a fire fighting device.

[0073] The fire-fighting device comprises a pumping device 2 , a water supply valve 3 and the liquid discharge assembly as described above, wherein the water supply valve 3 is arranged at the liquid outlet of the pumping device 2 .

[0074] It should be noted that the pumping device 2 includes a liquid discharge component, and also includes all the above-mentioned advantages of the liquid discharge component, which will not be described in detail here.

[0075] It should also be noted that the fire-fighting device described in the present invention includes but is not limited to a fire truck.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A liquid discharge assembly, characterized in that: Used to discharge residual liquid in a fire-fighting device, wherein the fire-fighting device comprises a pumping device (2), a water supply valve (3) arranged at a liquid outlet of the pumping device (2), and the liquid discharge component comprises: A drain valve (1), the drain valve (1) being used to be connected to the fire-fighting device and to discharge the remaining liquid in the fire-fighting device; A first detection device (4), the first detection device (4) is used to be connected to the pumping device (2) and detect the start and stop status of the pumping device (2); A second detection device (5), the second detection device (5) is used to be connected to the water supply valve (3) and detect the opening and closing state of the water supply valve (3); A control component (6), the control component (6) is connected to the drain valve (1), the first detection device (4) and the second detection device (5), and the control component (6) is configured to control the opening and closing of the drain valve (1).

2. The drain assembly according to claim 1, characterized in that: The fire fighting device also has a pipeline (7), and the water supply valve (3), the pumping device (2) and the pipeline (7) are all connected to the drainage valve (1).

3. The drain assembly according to claim 2, characterized in that: The pipeline (7) comprises a curved pipe section, the two ends of which are respectively connected to other pipe sections of the pipeline (7), the middle of the curved pipe section is bent downward, and the lowest point of the downward bend of the curved pipe section is connected to the drain valve (1).

4. The drain assembly according to claim 2, characterized in that: The water supply valve (3), the pumping device (2) and the pipeline (7) are all connected to the drainage valve (1) via corresponding hoses (8).

5. The drainage assembly according to any one of claims 1 to 4, characterized in that: It also includes a purge component, which is connected to the fire-fighting device and is used to blow purge gas into the fire-fighting device. The purge component is connected to the control component (6), and the control component (6) is configured to control the start and stop of the purge component.

6. The drain assembly according to claim 5, characterized in that: The purge assembly comprises a gas container (9) and a switch valve (10); the gas container (9) is used to contain purge gas; the gas container (9) is connected to the fire-fighting device via the switch valve (10); the switch valve (10) is used to control the connection or disconnection between the gas container (9) and the fire-fighting device; the switch valve (10) is connected to the control assembly (6).

7. The drain assembly according to claim 5, characterized in that: It also comprises a first one-way valve (11), the purge assembly is connected to the fire-fighting device via the first one-way valve (11), and the first one-way valve (11) is configured to be able to conduct along the direction from the purge assembly to the fire-fighting device.

8. The drain assembly according to claim 5, characterized in that: It also comprises a gas processing component (12), wherein the gas processing component (12) is connected to the purge component, and the gas processing component (12) is used to filter the purge gas.

9. The drain assembly according to claim 1, characterized in that: The drain valve (1) is provided with a handle for an operator to operate, and the handle can control the opening and closing of the drain valve (1).

10. A fire fighting device, characterized in that: It comprises a pumping device (2), a water supply valve (3) and a liquid discharge assembly according to any one of claims 1 to 9, wherein the water supply valve (3) is arranged at the liquid outlet of the pumping device (2).

Images