Automatic foam proportioning mixer for vehicle-mounted fire pump

Abstract

The utility model relates to the technical field of fire fighting, in particular to an automatic foam proportioning mixer for a vehicle-mounted fire pump, which comprises a mixing assembly, a steering assembly and a PLC (programmable logic controller) control panel, the steering assembly is arranged on the mixing assembly, the mixing assembly comprises a foam pipe, an electric ball valve and a Venturi pipe, and the electric ball valve is arranged on the mixing assembly. The discharging end of the foam pipe is connected with the feeding end of the electric ball valve, and the Venturi pipe is arranged at the discharging end of the electric ball valve. Through an assembly composed of a mixing assembly, a steering assembly and a PLC control panel, a set of mixer capable of automatically mixing and discharging foam and clear water is provided for personnel, so that when a vehicle-mounted fire pump is pressurized to discharge water in a venturi tube for fire fighting operation, the venturi tube enables a foam tube to generate negative pressure based on the water conveying pressure, and the foam tube generates negative pressure based on the water conveying pressure; foam entering the foam pipe can flow into the Venturi pipe and is discharged after being mixed with clear water, and automatic mixing of the foam and water is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting technical field, concretely relates to a kind of automatic foam proportioning mixers for vehicle-mounted fire pump. BACKGROUND

[0002] Foam fire engine is mainly applied to extinguish A class (solid fire) and B class (liquid fire), by generating a large amount of foam to cover on the surface of combustible, insulate air and reduce temperature, so as to effectively extinguish fire, and is widely used in chemical industry, petroleum, traffic and multiple fields.

[0003] During foam fire operation of existing vehicle-mounted fire fighting facilities, it is difficult to flexibly adjust the mixing ratio of foam and clean water according to demand, resulting in poor fire extinguishing efficiency and adaptability, and inconvenient foam discharge direction adjustment problem, therefore an automatic foam proportioning mixer for vehicle-mounted fire pump is proposed. UTILITY MODEL CONTENTS

[0004] In view of the problems in the prior art, the utility model provides an automatic foam proportioning mixer for vehicle-mounted fire pump to provide a set of automatic foam and clean water mixing discharge mixer for personnel, so that the vehicle-mounted fire pump can perform fire fighting operation on the drainage in the venturi tube under pressure, the venturi tube is based on the pressure of the water delivery, the foam pipe generates negative pressure, the foam entering the foam pipe can flow into the venturi tube and be discharged after mixing with clean water, to realize automatic mixing of foam and water.

[0005] The utility model solves the technical problems by adopting the technical scheme of an automatic foam proportioning mixer for vehicle-mounted fire pump, which comprises a mixing assembly, a steering assembly and a PLC control panel, the steering assembly is arranged on the mixing assembly.

[0006] The mixing assembly comprises a foam pipe, an electric ball valve and a venturi tube, the discharge end of the foam pipe is connected with the feed end of the electric ball valve, and the venturi tube is arranged at the discharge end of the electric ball valve.

[0007] By adopting the above technical scheme, the assembly composed of the mixing assembly, the steering assembly and the PLC control panel provides a set of automatic foam and clean water mixing discharge mixer for personnel, so that the vehicle-mounted fire pump can perform fire fighting operation on the drainage in the venturi tube under pressure, the venturi tube is based on the pressure of the water delivery, the foam pipe generates negative pressure, the foam entering the foam pipe can flow into the venturi tube and be discharged after mixing with clean water, to realize automatic mixing of foam and water.

[0008] Specifically, one end of the venturi tube is fixedly connected with a water pipe interface for clean water to enter, and the discharge ends of the water pipe interface are located in the venturi tube, and the end of the venturi tube away from the water pipe interface is provided with a discharge port.

[0009] Specific, the side of the Venturi tube near the water pipe interface one end is provided with a foam inlet interface, the foam inlet interface is connected with the discharge end of the electric ball valve through a rotary joint;

[0010] The outer periphery of the foam inlet interface is fixedly connected with a first gear.

[0011] By adopting the above technical scheme, after the high-pressure clean water enters from the water pipe interface, a certain negative pressure is generated at the foam inlet interface connected with the Venturi tube, so that the foam in the foam pipe is automatically sucked, and the foam flow discharged from the foam pipe is controlled by the electric ball valve.

[0012] Specifically, the turning assembly includes a servo reduction motor and a second gear, the servo reduction motor is installed on one side of the valve seat of the electric ball valve, the center of the second gear is connected with the driving end of the servo reduction motor, and the second gear is engaged with the first gear.

[0013] By adopting the above technical scheme, through the setting of the turning assembly, the personnel can adjust the angle of the discharge end of the Venturi tube according to the required angle of the fire fighting, so that the direction of the mixed foam is adjusted, and the flexibility of use is improved.

[0014] Specifically, the bottom of the foam pipe is connected with a flow sensor, the signal output end of the flow sensor is electrically connected with the signal input end of the PLC control panel through wires, and the control output end of the PLC control panel is electrically connected with the control input end of the electric ball valve and the servo reduction motor through wires.

[0015] The utility model discloses a beneficial effect: through the component that the mixing assembly, turning assembly and PLC control panel constitute, realize for personnel provides a set of automatic foam and clean water mixed discharge mixer, when the vehicle-mounted fire pump is in pressure boost and carries out fire fighting to the drainage in the Venturi tube, the pressure of the water delivery based on the Venturi tube makes the foam pipe produce negative pressure, and the foam in the foam pipe can flow into the Venturi tube and be discharged after mixing with clean water, realize the automatic mixing of foam and water, during, through the adjustment of the electric ball valve, the foam flow in the foam pipe into the Venturi tube is adjusted, and the flow state of the electric ball valve is controlled by the PLC control panel, and the PLC control panel controls the flow of the electric ball valve through the value that personnel pre-sets, so as to realize the automatic adjustment of the proportion of foam and clean water, can satisfy the use of different fire fighting scenes, through the setting of the turning assembly, the personnel can adjust the angle of the discharge end of the Venturi tube according to the required angle of the fire fighting, so that the direction of the mixed foam is adjusted, the flexibility of use is improved, solve the problem that the mixing proportion of foam and clean water is difficult to adjust flexibly during the foam fire fighting of the existing vehicle-mounted fire fighting facilities, lead to poor fire extinguishing efficiency and adaptability and inconvenient foam direction adjustment.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model is further illustrated below in combination with the drawings and embodiments.

[0017] Fig. 1 It is the whole schematic view of the utility model;

[0018] Fig. 2 It is the mixed assembly schematic view of the utility model;

[0019] Fig. 3 It is the venturi schematic view of the utility model;

[0020] In the drawing: mixed assembly 1, foam pipe 11, flow sensor 12, electric ball valve 13, venturi 14, foam inlet interface 141, water pipe interface 142, discharge port 143, first gear 144, rotary joint 15, steering assembly 2, servo deceleration motor 21, second gear 22, PLC control panel 3. DETAILED DESCRIPTION

[0021] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further explained below in combination with specific embodiments.

[0022] As Figs. 1-3 Indicated, a kind of automatic foam proportional mixer for vehicle-mounted fire pump of the utility model, including mixed assembly 1, steering assembly 2 and PLC control panel 3, the steering assembly 2 is set on mixed assembly 1;

[0023] The mixed assembly 1 includes foam pipe 11, electric ball valve 13 and venturi 14, the discharge end of foam pipe 11 is connected with the feed end of electric ball valve 13, the venturi 14 is set in the discharge end of electric ball valve 13.

[0024] The utility model also includes, venturi 14 one end is fixedly connected with water pipe interface 142 for clear water to enter, the discharge end of water pipe interface 142 is located in venturi 14, the one end of venturi 14 away from water pipe interface 142 is provided with discharge port 143.

[0025] The utility model also includes, the side of venturi 14 one end close to water pipe interface 142 is provided with foam inlet interface 141, the discharge end of foam inlet interface 141 is connected with electric ball valve 13 by rotary joint 15;

[0026] The outer periphery of foam inlet interface 141 is fixedly connected with first gear 144.

[0027] In use, based on the setting of the Venturi tube 14, after the high-pressure clean water enters from the water pipe interface 142, the foam inlet interface 141 connected with the Venturi tube 14 generates a certain negative pressure, realizing automatic suction of the foam in the foam pipe 11, and the foam flow discharged from the foam pipe 11 is controlled by the electric ball valve 13.

[0028] The utility model also includes, the steering assembly 2 includes servo reduction motor 21 and second gear 22, servo reduction motor 21 is installed in the valve seat one side of electric ball valve 13, the centre of the circle of second gear 22 is connected with the drive end of servo reduction motor 21, second gear 22 is engaged with first gear 144.

[0029] In use, the setting of the steering assembly 2 is convenient for personnel to adjust the angle of the discharge end of the Venturi tube 14 according to the angle required by the fire fighting, so that the direction of the discharged mixed foam is adjusted, and the flexibility of use is improved.

[0030] The utility model also includes, the foam pipe 11 bottom is connected with flow sensor 12, the signal output end of flow sensor 12 and the signal input end of PLC control panel 3 are electrically connected through wire, and the control output end of PLC control panel 3 and the control input end of electric ball valve 13 and servo reduction motor 21 are electrically connected through wire.

[0031] In use, the electric ball valve 13 or the foam pipe 11 in the mixing assembly 1 is assembled on the fire fighting truck, the PLC control panel 3 is arranged at the central control of the fire fighting truck, the power supply part in the fire fighting truck provides power supply for the electric mechanism in the application, the water pipe interface 142 is connected with the drainage end of the vehicle-mounted fire pump required to be used through a hose, the feeding end of the foam pipe 11 is connected with the discharge end of the foam liquid storage tank on the fire fighting truck, in use, the second gear 22 is driven to rotate by the servo reduction motor 21, the second gear 22 is engaged with the first gear 144, the use angle of the Venturi tube 14 is adjusted, and it is more suitable for the angle required to discharge foam, after the vehicle-mounted fire pump works, the clean water in the fire fighting truck is discharged into the Venturi tube 14 by the fire pump, the Venturi tube 14 is based on the pressure of the water delivery, the foam pipe 11 generates negative pressure, the foam in the foam pipe 11 can flow into the Venturi tube 14 and be discharged after mixing with the clean water, realizing automatic mixing of the foam and the water, during the period, the flow of the foam into the Venturi tube 14 is adjusted by adjusting the electric ball valve 13, the flow state of the electric ball valve 13 is controlled by the PLC control panel 3, and the flow of the electric ball valve 13 is controlled by the PLC control panel 3 through the value set by personnel in advance, so that the automatic adjustment of the proportion of the foam and the clean water is realized, and the use of different fire fighting scenes is satisfied.

[0032] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic foam proportioner for a vehicular fire pump, characterized by, Including mixing assembly (1), steering assembly (2) and PLC control panel (3), the steering assembly (2) is arranged on the mixing assembly (1); The mixing assembly (1) includes a foam pipe (11), a motor ball valve (13) and a venturi tube (14), the discharge end of the foam pipe (11) is connected with the feed end of the motor ball valve (13), and the venturi tube (14) is arranged at the discharge end of the motor ball valve (13).

2. An automatic foam proportioner for a vehicular fire pump as defined in claim 1, wherein, One end of the venturi tube (14) is fixedly connected with a water pipe interface (142) for entering clean water, both ends of the water pipe interface (142) are located in the venturi tube (14), and one end of the venturi tube (14) away from the water pipe interface (142) is provided with a discharge port (143).

3. An automatic foam proportioner for a vehicular fire pump as defined in claim 2, wherein, The side of the venturi tube (14) close to one end of the water pipe interface (142) is provided with a foam inlet interface (141), and the foam inlet interface (141) is connected with the discharge end of the motor ball valve (13) through a rotary joint (15). The outer periphery of the foam inlet interface (141) is fixedly connected with a first gear (144).

4. An automatic foam proportioner for a vehicular fire pump as defined in claim 3, wherein, The steering assembly (2) includes a servo reduction motor (21) and a second gear (22), the servo reduction motor (21) is installed on one side of the valve seat of the motor ball valve (13), the center of the second gear (22) is connected with the driving end of the servo reduction motor (21), and the second gear (22) is engaged with the first gear (144).

5. An automatic foam proportioner for a vehicular fire pump as defined in claim 4, wherein, The bottom of the foam pipe (11) is connected with a flow sensor (12), the signal output end of the flow sensor (12) is electrically connected with the signal input end of the PLC control panel (3) through wires, and the control output end of the PLC control panel (3) is electrically connected with the control input end of the motor ball valve (13) and the servo reduction motor (21) through wires.

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