Fire fighting truck with foam recovery function

Abstract

The utility model provides a fire fighting truck with foam recovery, which comprises a truck body, a carriage is arranged on the truck body, a foam stock solution tank is arranged in the carriage, a discharge pipe is arranged on the foam stock solution tank, one end of the discharge pipe is connected with a foam conveying belt, the discharge pipe is connected with a main valve in series, and the main valve is connected with the foam stock solution tank. The discharging pipe is connected with the foam conveying belt through a three-way pipe, and a branch valve is connected to a bypass pipe of the three-way pipe in series. According to the foam stock solution recycling device, the recycling tank is arranged and used for storing the foam stock solution to be recycled, the recycled foam stock solution is prevented from being mixed into and polluting the foam stock solution in the foam stock solution tank, then the piston disc is arranged in the recycling tank, the piston disc can adaptively lift the height according to the amount of the recycled stock solution, and the volume used for containing the recycled stock solution is increased; compared with the prior art, the device has the advantages of avoiding foaming of the foam stock solution and effectively avoiding overflowing of the recovered stock solution, and the reliability of stock solution recovery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire trucks, in particular to a fire truck with foam recovery function. Background Art

[0002] After the foam firefighting is completed, the firefighters usually take back the foam conveying belt and put it in standby state. When taking back the foam conveying belt, the firefighters usually drive out the redundant foam remaining in the foam conveying belt which is tens or even hundreds of meters long. Specifically, the foam conveying belt is taken back while the foam conveying belt is driven out. Therefore, on the one hand, the workload and operation intensity of the firefighters are unnecessarily increased. On the other hand, since the fire extinguishing foam is a foam concentrate, the price is relatively expensive, so driving it to the ground without recycling will cause a waste of resources and significantly increase the cost of firefighting.

[0003] The utility model with publication number CN219398795U proposes a foam recovery device for a foam fire truck, including a foam fire truck compartment and a top plate, the top plate is fixedly connected to the top of the foam fire truck compartment, a recovery component is installed on the front of the foam fire truck compartment, a connection component is installed on the front of the recovery component, and the recovery component is composed of an air push unit and a filter unit. The foam recovery device for the foam fire truck connects the two ends of the foam delivery pipe to the air outlet pipe and the recovery pipe respectively, and starts the air pump, so that the remaining foam in the foam delivery pipe is pushed by high-pressure air to enter the interior of the foam fire truck compartment, thereby avoiding the waste of foam stock solution. At the same time, by installing a filter element at one end of the suction pipe, the air entering the air pump can be filtered to avoid dust in the air from mixing with the foam stock solution, resulting in the contamination of the foam stock solution.

[0004] However, the above-mentioned prior art still has the following deficiencies when used: 1. The foam concentrate is recovered by transporting the foam concentrate in the foam delivery pipe to the interior of the car using high-pressure air. This method has the problem that the air pressure in the car increases and the air needs to be exhausted to the outside in order to recover the foam concentrate normally. When exhausting the air, the recovered concentrate is easily foamed and then sprayed out, resulting in a poor recovery effect. 2. When using air pressure recovery, the injection end of the foam delivery pipe needs to be connected to the air pump, which requires the injection end of the foam delivery pipe to be transferred to the position of the air pump, while the foam concentrate remains in the foam delivery pipe, which results in the problem that it is more difficult to pull the foam delivery pipe.

[0005] To this end, the utility model provides a fire truck with foam recovery. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a fire truck with foam recovery to solve the problems raised in the above-mentioned background technology. The utility model has the advantages of comprehensive, stable, leakage-free and reliable recovery of unused foam liquid in the foam conveyor belt, and also has the advantage of more convenient recovery of foam liquid.

[0007] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a fire truck with foam recovery, comprising a body, a compartment is arranged on the body, a foam raw liquid tank is arranged in the compartment, a discharge pipe is arranged on the foam raw liquid tank, one end of the discharge pipe is connected to a foam conveyor belt, a main valve is connected in series to the discharge pipe, the discharge pipe is connected to the foam conveyor belt through a three-way pipe, a branch valve is connected in series to a bypass pipe of the three-way pipe, the free end of the bypass pipe of the three-way pipe is connected to a recovery tank located in the compartment through a pipeline, a piston disk is elastically slidably connected up and down inside the recovery tank, and also includes a portable driver, the portable driver is provided with an upper squeezing roller, a lower squeezing roller and a control motor for controlling the rotation of the lower squeezing roller, and the upper squeezing roller and the lower squeezing roller are in an elastically counteracting state.

[0008] Furthermore, a reduction tube is welded to the top of the recovery tank, the upper end surface of the piston disk is fixedly connected to a guide shaft sleeved in the reduction tube, the guide shaft is sleeved with a return spring located in the recovery tank, and the bottom of the recovery tank is fixedly connected to a transfer tube connected through a pipeline and a bypass pipe of a tee pipe.

[0009] Furthermore, a breathing tube is fixedly connected to the top of the recovery tank, and filter cotton is arranged in the breathing tube.

[0010] Furthermore, the portable repeller includes a walking base plate, a vertical plate is welded on the top of the walking base plate, one end of the lower extrusion roller is fixedly connected to a transmission shaft that is transmission-connected to one side of the vertical plate, one side of the vertical plate is elastically slidably connected to a slide seat up and down, one end of the upper extrusion roller is welded to a support shaft that is rotationally connected to one side of the slide seat, and the control motor is fixedly arranged on the other side of the vertical plate and its output shaft is fixedly connected to one end of the transmission shaft.

[0011] Furthermore, a slideway slidably matched with the slide seat is provided through one side of the vertical plate, and a support spring is provided between the top of the slideway and the slide seat.

[0012] Furthermore, a handle is welded on one side of the slide seat.

[0013] Furthermore, a guide wheel is arranged at the bottom of the walking base plate, and a handle is welded at the top of the vertical plate.

[0014] The beneficial effects of the utility model are as follows:

[0015] In the utility model, a recovery tank is provided for storing the foam stock solution to be recovered, so as to prevent the recovered foam stock solution from mixing into the foam stock solution in the foam stock solution tank and contaminating it. Then a piston disk is provided in the recovery tank. The piston disk can automatically increase its lifting height according to the amount of recovered stock solution, thereby increasing the volume for accommodating the recovered stock solution. Compared with the prior art, this method has the advantage of preventing the foaming of the foam stock solution, and can effectively prevent the overflow of the recovered stock solution, thereby improving the reliability of stock solution recovery.

[0016] In the utility model, a portable drive is provided, which utilizes an upper squeezing roller and a lower squeezing roller to clamp the foam conveyor belt and convey the foam concentrate in the foam conveyor belt to a recovery tank by rolling and squeezing, which can effectively reduce the residual liquid in the foam conveyor belt. In addition, a control motor is provided for driving the lower squeezing roller to rotate, which is convenient for motorized rolling and conveying of the liquid in the foam conveyor belt, and has the advantage of saving more effort in recovering the foam concentrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a foam recovery component of a fire truck with foam recovery according to the utility model;

[0018] Figure 2 It is a schematic diagram of a portable repellent of a fire truck with foam recovery according to the utility model;

[0019] Figure 3 This is a plan view of a fire truck with foam recovery according to the utility model;

[0020] In the figure: 1. vehicle body; 2. compartment; 3. foam concentrate tank; 31. discharge pipe; 4. foam conveyor belt; 5. main valve; 6. three-way pipe; 7. branch valve; 8. recovery tank; 81. necking pipe; 82. transfer pipe; 83. breathing tube; 831. filter cotton; 9. piston disc; 91. guide shaft; 911. return spring; 101. portable repeller; 1011. upper squeezing roller; 10111. support shaft; 1012. lower squeezing roller; 10121. transmission shaft; 1013. control motor; 1014. walking base; 10141. vertical board; 101411. slide seat; 1014111. handle; 101412. slideway; 101413. support spring; 101414. handle; 10143. guide wheel. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] See also Figures 1 to 3The utility model provides a technical solution: a fire truck with foam recovery, comprising a body 1, a compartment 2 is arranged on the body 1, a foam liquid tank 3 is arranged in the compartment 2, a discharge pipe 31 is arranged on the foam liquid tank 3, the discharge pipe 31 is arranged to pass through one side of the compartment 2, one end of the discharge pipe 31 is connected to a foam conveyor belt 4, the foam conveyor belt 4 is in a roll shape when not in use, and its function is to convey foam liquid, a main valve 5 is connected in series to the discharge pipe 31, after the main valve 5 is opened, the foam liquid tank 3 supplies foam liquid to the foam conveyor belt 4 under high pressure, and a foam spray gun is installed at the other end of the foam conveyor belt 4.

[0023] In the present technical scheme, the discharge pipe 31 is connected to the foam conveyor belt 4 through a three-way pipe 6, and a sub-valve 7 is connected in series on the bypass pipe of the three-way pipe 6. Both the sub-valve 7 and the main valve 5 can be ball valves. The free end of the bypass pipe of the three-way pipe 6 is connected to a recovery tank 8 located in the carriage 2 through a pipeline. The function of the recovery tank 8 is to store the foam concentrate recovered from the foam conveyor belt 4, wherein the recovery tank 8 is elastically and slidably connected with a piston disk 9 up and down. When there is no foam concentrate in the recovery tank 8, the piston disk 9 is located at the bottom of the recovery tank 8. When the recovery tank 8 enters the foam concentrate, the piston disk 9 will be lifted up and the volume below it will increase. This storage method will not cause the foam concentrate to enter the recovery tank 8 and form bubbles, and will not cause the problem of foam overflow. In the specific implementation, it is preferred that a reduction tube 81 is welded to the top of the recovery tank 8, and the upper end surface of the piston disk 9 is fixedly connected to a guide shaft 91 sleeved in the reduction tube 81. A return spring 911 located in the recovery tank 8 is sleeved on the guide shaft 91. The function of the return spring 911 is to provide elastic force for the piston disk 9 to move downward. The bottom of the recovery tank 8 is fixedly connected to a transfer tube 82 connected through a pipeline and a bypass pipe of the three-way pipe 6.

[0024] Among them, a breathing tube 83 is fixedly connected to the top of the recovery tank 8, and a filter cotton 831 is arranged in the breathing tube 83. The function of the breathing tube 83 is to facilitate the gas to enter the space above the piston disk 9 in the recovery tank 8. The filter cotton 831 plays the role of filtering the gas entering the recovery tank 8 to prevent the dusty air from polluting the inner cavity of the recovery tank 8 and affecting the smoothness of the piston disk 9 sliding up and down.

[0025] Furthermore, it also includes a portable repeller 101, the function of which is to squeeze the residual foam liquid on the foam conveyor belt 4 into the recovery tank 8. The portable repeller 101 can be placed in the carriage 2 when not in use, and can be moved by hand when in use.

[0026] Specifically, the portable expelling device 101 is provided with an upper squeezing roller 1011, a lower squeezing roller 1012 and a control motor 1013 for controlling the rotation of the lower squeezing roller 1012. The upper squeezing roller 1011 and the lower squeezing roller 1012 are in an elastically opposed state. When in use, the foam conveyor belt 4 is placed between the upper squeezing roller 1011 and the lower squeezing roller 1012. When the lower squeezing roller 1012 rotates, it can not only expel the liquid in the foam conveying belt 4, but also drive the portable expelling device 101 to move along the foam conveying belt 4 toward the recovery tank 8, which has the effect of labor-saving rolling and recovering the foam concentrate.

[0027] The portable repeller 101 includes a walking base plate 1014, a guide wheel 10143 is arranged at the bottom of the walking base plate 1014, a vertical plate 10141 is welded on the top of the walking base plate 1014, a handle 101414 is welded on the top of the vertical plate 10141, and the handle 101414 is a portable handheld component. One end of the lower squeezing roller 1012 is fixedly connected to a transmission shaft 10121 which is transmission-connected to one side of the vertical plate 10141, and one side of the vertical plate 10141 is elastically slidably connected to a slide seat 10141 up and down. 1. A support shaft 10111 is welded at one end of the upper squeezing roller 1011 and is rotatably connected to one side of the slide 101411. The control motor 1013 is fixedly arranged on the other side of the vertical plate 10141 and its output shaft is fixedly connected to one end of the transmission shaft 10121. When the slide 101411 slides downward, it will drive the upper squeezing roller 1011 to squeeze the lower squeezing roller 1012. When the slide 101411 moves upward, the distance between the upper squeezing roller 1011 and the lower squeezing roller 1012 is convenient for docking with the foam conveyor belt 4.

[0028] Furthermore, a slideway 101412 that slidably cooperates with the slide seat 101411 is penetrated through one side of the vertical plate 10141, and a support spring 101413 is arranged between the top of the slideway 101412 and the slide seat 101411, and the support spring 101413 provides an elastic thrust to the slide seat 101411 for downward movement.

[0029] In this embodiment, a handle 1014111 is welded on one side of the slide 101411. The handle 1014111 is an operating component for manually controlling the upward movement of the slide 101411. When in use, the user steps on the walking base 1014 and then holds the handle 1014111 to lift the slide.

[0030] Working principle: When the original liquid in the foam conveyor belt 4 needs to be recovered, the main valve 5 is closed first, and then the sub-valve 7 is opened. The portable expelling device 101 is carried to the far end of the foam conveyor belt 4 by holding the handle 101414, and the walking base 1014 is stepped on and the handle 101411 is manually lifted. The slide 101411 drives the upper squeezing roller 1011 to move upward, and the distance between the upper squeezing roller 1011 and the lower squeezing roller 1012 increases. The foam conveyor belt 4 is placed on the upper squeezing roller 1011. 11 and the lower squeezing roller 1012, then release the handle 1014111, the upper squeezing roller 1011 and the upper squeezing roller 1011 elastically squeeze the foam conveyor belt 4, then start the control motor 1013, the lower squeezing roller 1012 rotates and then cooperates with the upper squeezing roller 1011 to roll the foam conveyor belt 4, and the foam concentrate in the foam conveyor belt 4 is squeezed into the recovery tank 8. The piston disc 9 in the recovery tank 8 will rise after being pushed by the concentrate, thereby realizing the recovery of the foam concentrate.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fire truck with foam recovery, comprising a vehicle body (1), a vehicle compartment (2) being provided on the vehicle body (1), a foam stock liquid tank (3) being provided in the vehicle compartment (2), a discharge pipe (31) being provided on the foam stock liquid tank (3), one end of the discharge pipe (31) being connected to a foam conveyor belt (4), and a main valve (5) being connected in series to the discharge pipe (31), characterized in that: The discharge pipe (31) is connected to the foam conveyor belt (4) via a three-way pipe (6); a split valve (7) is connected in series to a bypass pipe of the three-way pipe (6); a free end of the bypass pipe of the three-way pipe (6) is connected to a recovery tank (8) located in the carriage (2) via a pipeline; a piston disc (9) is elastically slidably connected up and down inside the recovery tank (8); and a portable drive (101) is also included; an upper squeezing roller (1011), a lower squeezing roller (1012) and a control motor (1013) for controlling the rotation of the lower squeezing roller (1012) are provided on the portable drive (101); the upper squeezing roller (1011) and the lower squeezing roller (1012) are in an elastically opposed state.

2. A fire truck with foam recovery according to claim 1, characterized in that: A necking tube (81) is welded to the top of the recovery tank (8); a guide shaft (91) sleeved in the necking tube (81) is fixedly connected to the upper end surface of the piston disc (9); a return spring (911) located in the recovery tank (8) is sleeved on the guide shaft (91); and a transfer tube (82) connected to the bottom of the recovery tank (8) through a pipeline and a bypass tube of the tee tube (6) is fixedly connected.

3. A fire truck with foam recovery according to claim 2, characterized in that: A breathing tube (83) is fixedly connected to the top of the recovery tank (8), and a filter cotton (831) is arranged inside the breathing tube (83).

4. A fire truck with foam recovery according to claim 1, characterized in that: The portable repeller (101) comprises a walking base plate (1014), a vertical plate (10141) is welded to the top of the walking base plate (1014), one end of the lower squeezing roller (1012) is fixedly connected to a transmission shaft (10121) that is transmission-connected to one side of the vertical plate (10141), one side of the vertical plate (10141) is elastically slidably connected to a slide seat (101411) up and down, one end of the upper squeezing roller (1011) is welded to a support shaft (10111) that is rotationally connected to one side of the slide seat (101411), and the control motor (1013) is fixedly arranged on the other side of the vertical plate (10141) and its output shaft is fixedly connected to one end of the transmission shaft (10121).

5. A fire truck with foam recovery according to claim 4, characterized in that: A slideway (101412) that slidably cooperates with the slide seat (101411) is provided through one side of the vertical plate (10141), and a support spring (101413) is provided between the top of the slideway (101412) and the slide seat (101411).

6. A fire truck with foam recovery according to claim 5, characterized in that: A handle (1014111) is welded to one side of the slide seat (101411).

7. A fire truck with foam recovery according to claim 4, characterized in that: A guide wheel (10143) is provided at the bottom of the walking base plate (1014), and a handlebar (101414) is welded to the top of the vertical plate (10141).

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