Foam proportional mixing device for fire fighting

Abstract

The invention discloses a foam proportional mixing device for fire fighting. The foam proportional mixing device comprises a mixing tank, a stirring mechanism, a rotary driving mechanism, a movable auxiliary stirring structure, a movable driving mechanism, a viscosity sensor and a numerical control system, the mixing tank is provided with a liquid storage cavity and a mixed liquid outlet; the stirring mechanism is positioned in the liquid storage cavity and is pivoted to the mixing tank; the stirring mechanism is provided with a fixed stirring structure; the rotary driving mechanism is mounted on the mixing tank and is connected with the stirring mechanism; the movable auxiliary stirring structure is mounted on the stirring mechanism; the movable driving mechanism is mounted on the stirring mechanism and is connected with the movable auxiliary stirring structure; the viscosity sensor is arranged at the mixed liquid outlet; the numerical control system is electrically connected with the rotary driving mechanism, the movable driving mechanism and the viscosity sensor; the numerical control system is used for controlling the rotation driving mechanism and the movable driving mechanism to operate according to viscosity data collected by the viscosity sensor so as to change the size of the stirring area according to the viscosity of the mixed liquid, so that the mixing effect is improved.

Description

Technical Field

[0001] This invention relates to the field of fire protection equipment technology, and in particular to a foam proportioning device for fire protection. Background Technology

[0002] Firefighting foam is a highly efficient extinguishing agent specifically designed for extinguishing fires involving flammable liquids (such as oils, alcohols, and ethers). Essentially, it consists of a cluster of bubbles formed by mixing foam concentrate, water, and air. It can be understood as a special medium that can cover, cool, and isolate the flames. Unlike water, which sinks below oil, foam floats on the surface, forming a continuous foam layer that extinguishes the fire.

[0003] In a prior art fire-fighting foam proportioning mixing device, the agitator is fixedly installed. During the mixing process, it is difficult for the user to adjust the size of the agitator's stirring area according to the viscosity of the finished fire-fighting foam, resulting in an unsatisfactory mixing effect of the fire-fighting foam. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a foam proportioning device for fire fighting, which can improve the mixing effect of fire fighting foam.

[0005] The objective of this invention is achieved by the following technical solution: a foam proportioning mixing device for fire fighting, comprising: a mixing tank, a stirring mechanism, a rotary drive mechanism, a movable auxiliary stirring structure, a movable drive mechanism, a viscosity sensor, and a numerical control system;

[0006] The mixing tank is provided with a liquid storage chamber and a liquid outlet; the two ends of the liquid outlet are respectively connected to the liquid storage chamber and the external environment;

[0007] The stirring mechanism is located in the liquid storage chamber and is pivotally connected to the mixing tank; the stirring mechanism is provided with a fixed stirring structure;

[0008] The rotary drive mechanism is installed on the outer wall of the mixing tank, and the output end of the rotary drive mechanism is connected to the stirring mechanism.

[0009] The movable auxiliary stirring structure can be movably installed on the stirring mechanism, and the movable auxiliary stirring structure is used to cooperate with the fixed stirring structure to form an adjustable stirring area.

[0010] The movable drive mechanism is installed on the stirring mechanism, and the output end of the movable drive mechanism is connected to the movable auxiliary stirring structure. The movable drive mechanism is used to drive the movable auxiliary stirring structure to move, so as to adjust the size of the stirring area.

[0011] The viscosity sensor is located at the outlet of the mixture and is used to detect the viscosity of the mixture.

[0012] The CNC system is electrically connected to the rotary drive mechanism, the movable drive mechanism, and the viscosity sensor; the CNC system is used to control the operation of the rotary drive mechanism and the movable drive mechanism according to the viscosity data of the viscosity sensor, so as to change the rotary speed of the stirring mechanism and the size of the stirring area according to the viscosity of the mixture.

[0013] Further, the mixing tank includes a first tank and a second tank connected in sequence; the first tank is provided with a liquid inlet; the second tank is provided with a gas inlet, a foam liquid inlet, and a mixed liquid outlet; the first tank is detachably installed on the second tank to jointly form the liquid storage chamber; the fire-fighting foam proportioning mixing device further includes a liquid delivery mechanism, a gas delivery mechanism, and a foam liquid conveying mechanism; the liquid delivery mechanism is detachably installed on the first tank, and the output end of the liquid delivery mechanism is connected to the liquid inlet; the gas delivery mechanism is detachably installed on the second tank, and the output end of the gas delivery mechanism is connected to the gas inlet; the foam liquid conveying mechanism is detachably installed on the second tank, and the output end of the foam liquid conveying mechanism is connected to the foam liquid inlet.

[0014] Furthermore, the stirring mechanism includes a drive shaft; the opposite ends of the drive shaft are pivotally connected to the first tank and the second tank, respectively; the drive shaft is provided with the fixed stirring structure, which is supported by the drive shaft to rotate with it; the rotary drive mechanism is installed in the second tank and drives one end of the drive shaft near the second tank; the movable drive mechanism is installed at one end of the drive shaft; and the movable auxiliary stirring structure is movably installed on the drive shaft.

[0015] Furthermore, one of the transmission main shaft and the movable auxiliary stirring structure is provided with an annular moving structure, and the other is provided with an annular guiding structure. The annular moving structure is slidably nested within the annular guiding structure. The transmission main shaft has an avoidance structure. The movable auxiliary stirring structure has a driven part, which is correspondingly arranged with the avoidance structure. The output end of the movable driving mechanism passes through the avoidance structure and drives the driven part.

[0016] Furthermore, the avoidance structure is an arc-shaped avoidance groove; the driven part is a mounting hole; the movable drive mechanism includes:

[0017] A plug-in pin, which is pivotally connected to one end of the transmission main shaft;

[0018] A transmission rod, one end of which is disposed in the plug-in pile, and the other end of which passes through the arc-shaped clearance groove and the mounting hole in sequence; the transmission rod is used to move the mounting hole along the extension trajectory of the arc-shaped clearance groove;

[0019] A rotary drive mechanism is mounted on the transmission spindle and drives the plug connection.

[0020] An elastic reset member, the two ends of which abut against the outer walls of the rotary drive mechanism and the transmission main shaft respectively, so that the rotary drive mechanism has a tendency to move away from the transmission main shaft;

[0021] A fixing plate is detachably mounted on the transmission rod at one end away from the insertion stake; the fixing plate is used to fix the transmission rod.

[0022] Furthermore, multiple fixed stirring structures are provided, and these fixed stirring structures are distributed at intervals along the length direction of the transmission main shaft; multiple movable auxiliary stirring structures are provided, and these movable auxiliary stirring structures and the multiple fixed stirring structures are arranged alternately along the length direction of the transmission main shaft; multiple arc-shaped clearance grooves are provided, and these arc-shaped clearance grooves are distributed at intervals along the circumference of the transmission main shaft; multiple mounting holes are provided, and these mounting holes are distributed at intervals along the circumference of the transmission main shaft, with each mounting hole corresponding to each arc-shaped clearance groove; multiple transmission rods are provided, and these transmission rods are distributed at intervals along the circumference of the transmission main shaft, with each transmission rod inserted into a corresponding arc-shaped clearance groove.

[0023] Furthermore, the first tank body is provided with an annular mounting groove, which extends along the circumference of the first tank body; the liquid inlet is disposed on the bottom wall of the annular mounting groove; there are multiple liquid inlets, which are distributed at intervals along the circumference of the first tank body; the infusion mechanism is installed in the annular mounting groove, and the output end of the infusion mechanism is connected to each of the liquid inlets respectively.

[0024] Furthermore, the annular mounting groove has a limiting groove on its sidewall; the infusion mechanism includes an embedded infusion set, a pressurizing pump, and a storage tank connected in sequence; the embedded infusion set has a limiting ring, a liquid nozzle, and a liquid inlet, the limiting ring being nested within the limiting groove; multiple liquid nozzles are provided, each liquid nozzle being inserted into a corresponding liquid inlet; the liquid inlet is connected to the pressurizing pump; both the pressurizing pump and the storage tank are installed in the first tank body.

[0025] Furthermore, the second tank includes a tank body and a pipe fixing mechanism; the tank body is provided with a first assembly structure, a second assembly structure, and a pipe outlet; the gas inlet is disposed in the first assembly structure; the output end of the gas conveying mechanism is detachably installed in the first assembly structure; the foam liquid inlet is disposed in the second assembly structure; the output end of the foam liquid conveying mechanism is detachably installed in the second assembly structure; the pipe fixing mechanism is slidably inserted into the pipe outlet to close or open the pipe outlet; the pipe fixing mechanism is provided with a pipe receiving hole, and the input ends of the gas conveying mechanism and the foam liquid conveying mechanism are located at the pipe outlet and pass through the pipe receiving hole.

[0026] Furthermore, the second tank also includes a first seal and a second seal; both the first assembly structure and the second assembly structure are assembly grooves; the first seal is inserted into the first assembly structure and is used to seal the gap between the output end of the gas conveying mechanism and the first assembly structure; the second seal is inserted into the second assembly structure and is used to seal the gap between the output end of the foam liquid conveying mechanism and the second assembly structure.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. The mixing tank is provided with a mixed liquid outlet and a storage chamber; the two ends of the mixed liquid outlet are respectively connected to the storage chamber and the external environment; the stirring mechanism is located in the storage chamber and is pivotally connected to the mixing tank; the stirring mechanism is provided with a fixed stirring structure; the rotary drive mechanism is installed on the outer wall of the mixing tank, and the output end of the rotary drive mechanism drives and connects to the stirring mechanism; it can be understood that the rotary drive mechanism can be selected from hydraulic motors, electric motors, gear transmission components and conveyor belts, etc.; more importantly, preferably, the stirring mechanism can be pivotally connected to the center of the storage chamber to stir all the mixed raw materials as much as possible; in addition, based on the prior art, the mixed liquid raw materials include air, water and concentrated foam liquid, therefore, the sealing of the storage chamber should be ensured. Therefore, the mixed liquid outlet should be connected to an on / off valve to control the opening and closing of the storage chamber and control the flow rate of the mixed liquid at the mixed liquid outlet;

[0029] 2. The movable auxiliary stirring structure is movably installed on the stirring mechanism. The movable auxiliary stirring structure works in conjunction with the fixed stirring structure to form a stirring area. The movable drive mechanism is installed on the stirring mechanism, and its output end drives the movable auxiliary stirring structure. The movable drive mechanism drives the movable auxiliary stirring structure to move, thereby adjusting the size of the stirring area. It can be understood that the fixed stirring structure is supported by the stirring mechanism to rotate with it. Furthermore, the movable auxiliary stirring structure can be movably installed on the stirring mechanism via a "pivot connection," "rotational sleeve connection," "sliding connection," or "plug connection." Simultaneously, depending on the usage environment, the movable drive mechanism can be selected from mechanisms such as electric motors, hydraulic motors, electric push rods, and hydraulic cylinders. More importantly, with this configuration, the movable auxiliary stirring structure can compensate for the deficiencies of the fixed stirring structure, thereby compensating for the area stirred in a single rotation. This compensation mechanism is controlled by the movable drive mechanism to adjust the size of the stirring area in real time, thereby improving the mixing effect of the fire-fighting foam proportioning mixing device.

[0030] 3. The viscosity sensor is located at the outlet of the mixture and is used to detect the viscosity of the mixture. The CNC system is electrically connected to the rotary drive mechanism, the movable drive mechanism, and the viscosity sensor. The CNC system controls the operation of the rotary drive mechanism and the movable drive mechanism according to the viscosity data from the viscosity sensor, so as to change the rotary speed of the stirring mechanism and the size of the stirring area according to the viscosity of the mixture. Based on existing technology, the viscosity sensor can be selected from models such as E+E Elektronik and LEMIS Process. More importantly, by monitoring the viscosity of the finished mixture and controlling and adjusting the size of the stirring area through the CNC system, the response speed of the controlled end can be improved, thereby improving the stirring effect of the fire-fighting foam proportioning mixing device. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a foam proportioning device for fire fighting according to the present invention;

[0032] Figure 2 for Figure 1 The image shown is a cross-sectional view of a foam proportioning device for fire fighting.

[0033] Figure 3 for Figure 1 The image shown is a cross-sectional view of a foam proportioning device for fire fighting.

[0034] Figure 4 for Figure 3 A magnified view of point A shown below;

[0035] Figure 5 for Figure 1 An exploded view of a foam proportioning device for fire fighting is shown.

[0036] Figure 6 for Figure 5 The enlarged view of point B shown;

[0037] Figure 7 for Figure 1 An exploded view of a fire-fighting foam proportioning device is shown, wherein the first tank is in a disassembled state.

[0038] In the diagram: 1. Mixing tank; 11. Storage chamber; 12. Mixed liquid outlet; 13. First tank body; 131. Liquid inlet; 132. Annular mounting groove; 133. Limiting groove; 14. Second tank body; 141. Gas inlet; 142. Foam liquid inlet; 143. Tank body; 1431. First assembly structure; 1432. Second assembly structure; 1433. Pipe outlet; 144. First seal; 145. Second seal; 146. Pipe fixing mechanism; 1461. Pipe receiving hole; 2. Stirring mechanism; 21. Fixed stirring structure; 22. Transmission main shaft; 221. Annular guide structure; 222. Avoidance structure; 3. Rotary drive mechanism; 4. Movable auxiliary stirring structure; 41. Annular moving structure; 42. Driven part; 5. Movable drive mechanism; 51. Insertion pin; 52. Transmission rod; 53. Rotary drive mechanism; 54. Elastic reset component; 55. Fixed plate; 6. Viscosity sensor; 7. Infusion mechanism; 71. Embedded infusion set; 711. Limiting ring; 712. Liquid nozzle; 713. Liquid inlet; 8. Gas conveying mechanism; 9. Foam liquid conveying mechanism. Detailed Implementation

[0039] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0040] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] See Figures 1-7 A preferred embodiment of the present invention provides a foam proportioning mixing device for fire fighting, characterized in that it comprises: a mixing tank 1, a stirring mechanism 2, a rotary drive mechanism 3, a movable auxiliary stirring structure 4, a movable drive mechanism 5, a viscosity sensor 6, and a numerical control system.

[0043] The mixing tank 1 is provided with a mixed liquid outlet 12 and a storage chamber 11; the two ends of the mixed liquid outlet 12 are respectively connected to the storage chamber 11 and the external environment; the stirring mechanism 2 is located in the storage chamber 11 and is pivotally connected to the mixing tank 1; the stirring mechanism 2 is provided with a fixed stirring structure 21; the rotary drive mechanism 3 is installed on the outer wall of the mixing tank 1, and the output end of the rotary drive mechanism 3 drives and connects to the stirring mechanism 2; it can be understood that the rotary drive mechanism 3 can be selected from hydraulic motors, electric motors, gear transmission components and conveyor belts, etc.; more importantly, preferably, the stirring mechanism 2 can be pivotally connected to the center of the storage chamber 11 to stir all the mixed raw materials as much as possible; in addition, based on the prior art, the mixed liquid raw materials include air, water and concentrated foam liquid, therefore, the sealing of the storage chamber 11 should be ensured. Therefore, the mixed liquid outlet 12 should be connected to an on / off valve to control the opening and closing of the storage chamber 11 and control the flow rate of the mixed liquid at the mixed liquid outlet 12;

[0044] The movable auxiliary stirring structure 4 is movably installed on the stirring mechanism 2. The movable auxiliary stirring structure 4 works in conjunction with the fixed stirring structure 21 to form a stirring area. The movable drive mechanism 5 is installed on the stirring mechanism 2. The output end of the movable drive mechanism 5 drives the movable auxiliary stirring structure 4, thereby adjusting the size of the stirring area. It can be understood that the fixed stirring structure 21 is supported by the stirring mechanism 2 to rotate with it. Furthermore, the movable auxiliary stirring structure 4 can be movably installed on the stirring mechanism 2 through methods such as pivoting, rotating, sliding, or plugging. Simultaneously, depending on the usage environment, the movable drive mechanism 5 can be selected from mechanisms such as electric motors, hydraulic motors, electric push rods, or hydraulic cylinders. More importantly, this configuration allows the movable auxiliary stirring structure 4 to compensate for the deficiencies of the fixed stirring structure 21, thereby compensating for the area stirred in a single rotation. This compensation mechanism is controlled by the movable drive mechanism 5, enabling real-time adjustment of the size of the stirring area, thus improving the mixing effect of the fire-fighting foam proportioning mixing device.

[0045] The viscosity sensor 6 is disposed at the mixture outlet 12 and is used to detect the viscosity of the mixture. The CNC system is electrically connected to the rotary drive mechanism 3, the movable drive mechanism 5, and the viscosity sensor 6. The CNC system is used to control the operation of the rotary drive mechanism 3 and the movable drive mechanism 5 according to the viscosity data of the viscosity sensor 6, so as to change the rotary speed of the stirring mechanism 2 and the size of the stirring area according to the viscosity of the mixture. Based on the prior art, the viscosity sensor 6 can be selected from models such as E+E Elektronik and LEMIS Process. More importantly, by monitoring the viscosity of the finished mixture and controlling and adjusting the size of the stirring area through the CNC system, the response speed of the controlled end can be improved, thereby improving the stirring effect of the fire-fighting foam proportioning mixing device.

[0046] In use, the user needs to preset the mixing ratio of the fire-fighting foam through the CNC system. At this time, the CNC system controls the operation of the movable drive mechanism 5 and drives the movable auxiliary stirring structure 4 to change the size of the stirring area until the preset position is reached. After the adjustment is completed, the user needs to start the rotary drive mechanism 3 through the CNC system. At this time, the stirring mechanism 2 starts to rotate. During the rotation, the stirring area formed between the fixed stirring structure 21 and the movable auxiliary stirring structure 4 continuously and rapidly stirs the raw materials in the liquid storage chamber 11. If the viscosity data collected by the viscosity sensor 6 is lower than the preset value, then the movable drive mechanism 5 is controlled by the CNC system again and drives the movable auxiliary stirring structure, causing the area of ​​the stirring area to further expand until the viscosity of the mixture is greater than or equal to the preset threshold.

[0047] The mixing tank 1 is provided with a mixed liquid outlet 12 and a storage chamber 11. The two ends of the mixed liquid outlet 12 are respectively connected to the storage chamber 11 and the external environment. The stirring mechanism 2 is located in the storage chamber 11 and is pivotally connected to the mixing tank 1. The stirring mechanism 2 is provided with a fixed stirring structure 21. The rotary drive mechanism 3 is installed on the outer wall of the mixing tank 1, and its output end drives the stirring mechanism 2. It can be understood that the rotary drive mechanism 3 can be selected from mechanisms such as hydraulic motors, electric motors, gear transmission components, and conveyor belts. More importantly, and preferably, the stirring mechanism 2 can be pivotally connected to the center of the storage chamber 11 to agitate all the mixed raw materials as much as possible. In addition, based on existing technology, the mixed liquid raw materials include air, water, and concentrated foam liquid. Therefore, the sealing of the storage chamber 11 should be ensured. Thus, the mixed liquid outlet 12 should be connected to an on / off valve to control the opening and closing of the storage chamber 11 and control the flow rate of the mixed liquid at the mixed liquid outlet 12.

[0048] The movable auxiliary stirring structure 4 is movably installed on the stirring mechanism 2. The movable auxiliary stirring structure 4 works in conjunction with the fixed stirring structure 21 to form a stirring area. The movable drive mechanism 5 is installed on the stirring mechanism 2, and its output end drives the movable auxiliary stirring structure 4. The movable drive mechanism 5 drives the movable auxiliary stirring structure 4 to move, thereby adjusting the size of the stirring area. It can be understood that the fixed stirring structure 21 is supported by the stirring mechanism 2 to rotate with it. Furthermore, the movable auxiliary stirring structure 4 can be movably installed on the stirring mechanism 2 through methods such as pivoting, rotating, sliding, or plugging. Simultaneously, depending on the usage environment, the movable drive mechanism 5 can be selected from mechanisms such as electric motors, hydraulic motors, electric push rods, or hydraulic cylinders. More importantly, this configuration allows the movable auxiliary stirring structure 4 to compensate for the deficiencies of the fixed stirring structure 21, thereby compensating for the area stirred in a single rotation. This compensation mechanism is controlled by the movable drive mechanism 5, enabling real-time adjustment of the size of the stirring area, thus improving the mixing effect of the fire-fighting foam proportioning mixing device.

[0049] The viscosity sensor 6 is located at the mixture outlet 12 and is used to detect the viscosity of the mixture. The CNC system is electrically connected to the rotary drive mechanism 3, the movable drive mechanism 5, and the viscosity sensor 6. The CNC system controls the operation of the rotary drive mechanism 3 and the movable drive mechanism 5 according to the viscosity data from the viscosity sensor 6, so as to change the rotary speed of the stirring mechanism 2 and the size of the stirring area according to the viscosity of the mixture. Based on existing technology, the viscosity sensor 6 can be selected from models such as E+E Elektronik and LEMIS Process. More importantly, by monitoring the viscosity of the finished mixture and controlling and adjusting the size of the stirring area through the CNC system, the response speed of the controlled end can be improved, thereby improving the stirring effect of the fire-fighting foam proportioning mixing device.

[0050] See Figure 1 , Figure 2 and Figure 5Preferably, the mixing tank 1 includes a first tank body 13 and a second tank body 14 connected in sequence; the first tank body 13 is provided with a liquid inlet 131; the second tank body 14 is provided with a gas inlet 141, a foam liquid inlet 142 and a mixed liquid outlet 12; the first tank body 13 is detachably installed on the second tank body 14 to jointly form the liquid storage chamber 11; the fire-fighting foam proportioning mixing device further includes a liquid delivery mechanism 7, a gas delivery mechanism 8 and a foam liquid conveying mechanism 9; the liquid delivery mechanism 7 is detachably installed on the first tank body 13, and the output end of the liquid delivery mechanism 7 is connected to the liquid inlet 131; the gas delivery mechanism 8 is detachably installed on the second tank body 14, and the output end of the gas delivery mechanism 8 is connected to the liquid inlet 131. The gas inlet 141 is connected to the foam liquid inlet 142; the foam liquid conveying mechanism 9 is detachably installed on the second tank 14, and the output end of the foam liquid conveying mechanism 9 is connected to the foam liquid inlet 142; preferably, based on the usage environment, the first tank 13 can be installed on the second tank 14 by a "threaded connection"; more importantly, with this arrangement, the first tank 13 and the second tank 14 can be easily disassembled and separated by the user after use to clean the inner wall of the liquid storage chamber 11, avoiding residual substances from contaminating the raw materials and affecting the next round of mixing; at the same time, the liquid conveying mechanism 7, the gas conveying mechanism 8 and the foam liquid conveying mechanism 9 can also be disassembled and installed to facilitate user maintenance and prevent damage during use from affecting mixing.

[0051] See Figure 2 Preferably, the stirring mechanism 2 includes a drive shaft 22; the two ends of the drive shaft 22 are pivotally connected to the first tank 13 and the second tank 14 respectively; the drive shaft 22 is provided with the fixed stirring structure 21, which is supported by the drive shaft 22 and rotates with the drive shaft 22; the rotary drive mechanism 3 is installed on the second tank 14, and the rotary drive mechanism 3 drives the end of the drive shaft 22 near the second tank 14; the movable drive mechanism 5 is installed on one end of the drive shaft 22; the movable auxiliary stirring structure 4 is movably installed on the drive shaft 22; since the liquid storage chamber 11 is a humid environment, it is easy to reduce the service life of the drive mechanism. Therefore, the rotary drive mechanism 3 and the movable drive mechanism 5 are installed outside the liquid storage chamber 11 to ensure their service life and avoid affecting the mixing effect.

[0052] See Figure 2Preferably, one of the transmission main shaft 22 and the movable auxiliary stirring structure 4 is provided with an annular moving structure 41, and the other is provided with an annular guiding structure 221, wherein the annular moving structure 41 is slidably nested within the annular guiding structure 221; the transmission main shaft 22 is provided with a clearance structure 222; the movable auxiliary stirring structure 4 is provided with a driven part 42, which is correspondingly arranged with the clearance structure 222; the output end of the movable driving mechanism 5 passes through the clearance structure 222 and drives the driven part 42; it can be understood that the annular moving structure Structure 41 can be configured as an annular guide slider, and the annular guide structure 221 can be configured as an annular guide groove, and the annular guide slider should be nested in the annular guide groove; obviously, this configuration is to prevent the movable auxiliary stirring structure 4 from falling off and causing deformation and failure; more importantly, obviously, the driven part 42 is driven by the movable driving mechanism 5 to slide along the extension trajectory of the avoidance structure 222, the avoidance structure 222 can be configured as a through groove, and the driven part 42 and the output end of the movable driving mechanism 5 can be connected by means of threaded connection, plug-in and sleeve connection, etc.

[0053] See Figure 4 Preferably, the avoidance structure 222 is an arc-shaped avoidance groove; the driven part 42 is a mounting hole; the movable drive mechanism 5 includes:

[0054] A plug 51 is pivotally connected to one end of the transmission main shaft 22; it can be understood that the plug 51 is used to limit the relative sliding between the movable drive mechanism 5 and the transmission main shaft 22 in the axial direction.

[0055] A transmission rod 52, one end of which is disposed in the insertion post 51, and the other end is sequentially inserted through the arc-shaped clearance groove and the mounting hole; the transmission rod 52 is used to move the mounting hole along the extension trajectory of the arc-shaped clearance groove; it can be understood that the transmission rod 52 should pass through the transmission main shaft 22;

[0056] A rotary drive mechanism 53 is mounted on the transmission main shaft 22 and drives the plug-in pin 51. The rotary drive mechanism 53 can be a hydraulic motor, an electric motor, or other mechanism.

[0057] The elastic reset member 54 has two ends that abut against the outer walls of the rotary drive mechanism 53 and the transmission main shaft 22, respectively, so that the rotary drive mechanism 53 has a tendency to move away from the transmission main shaft 22. Since the operating environment of the fire-fighting foam proportioning mixing device is not fixed, it is very likely to be in a bumpy environment caused by the dispatch of fire trucks. The elastic reset member 54 is used to prevent the rotary drive mechanism 53 from being too rigidly fitted with the mixing tank 1, and to prevent the two from being damaged by collision, which would affect the mixing efficiency.

[0058] A fixing plate 55 is detachably mounted on the transmission rod 52 at one end away from the insertion post 51; the fixing plate 55 is used to fix the transmission rod 52; obviously, the fixing plate 55 is used to prevent the transmission rod 52 from detaching from the transmission main shaft 22, so as to avoid transmission failure affecting the mixing effect.

[0059] See Figure 2 and Figure 5 Preferably, multiple fixed stirring structures 21 are provided, and these multiple fixed stirring structures 21 are distributed at intervals along the length direction of the transmission main shaft 22; multiple movable auxiliary stirring structures 4 are provided, and these multiple movable auxiliary stirring structures 4 and the multiple fixed stirring structures 21 are arranged alternately along the length direction of the transmission main shaft 22; multiple arc-shaped clearance grooves are provided, and these multiple arc-shaped clearance grooves are distributed at intervals along the circumference of the transmission main shaft 22; multiple mounting holes are provided, and these multiple mounting holes are distributed at intervals along the circumference of the transmission main shaft 22, with each mounting hole corresponding to each arc-shaped clearance groove. The device is configured with multiple transmission rods 52, which are distributed circumferentially along the transmission main shaft 22. Each transmission rod 52 is inserted into a corresponding arc-shaped clearance groove. This configuration is intended to improve the transmission speed of the movable drive mechanism 5, thereby reducing the impact of the torsional stress on the transmission rods 52 on the operation of the rotary drive mechanism 53. Simultaneously, the multiple movable auxiliary stirring structures 4 and the multiple fixed stirring structures 21 are staggered to further expand the stirring area, thereby further improving the mixing effect of the fire-fighting foam proportioning mixing device.

[0060] See Figure 6Preferably, the first tank body 13 is provided with an annular mounting groove 132, which extends circumferentially along the first tank body 13; the liquid inlet 131 is disposed on the bottom wall of the annular mounting groove 132; there are multiple liquid inlets 131, which are distributed at intervals along the circumference of the first tank body 13; the infusion mechanism 7 is installed in the annular mounting groove 132, and the output end of the infusion mechanism 7 is connected to each of the liquid inlets 131 respectively; it can be understood that with this arrangement, the liquid for the mixture can be input into the storage chamber 11 around the stirring mechanism 2 to initially disperse the addition of raw materials, and the stirring mechanism 2 can simultaneously stir multiple raw materials, thereby improving the mixing efficiency and the mixing effect.

[0061] See Figure 6 Preferably, the sidewall of the annular mounting groove 132 is provided with a limiting groove 133; the infusion mechanism 7 includes an embedded infusion device 71, a pressurizing pump, and a storage tank connected in sequence; the embedded infusion device 71 is provided with a limiting ring 711, a liquid nozzle 712, and a liquid inlet 713, the limiting ring 711 being nested in the limiting groove 133; multiple liquid nozzles 712 are provided, each liquid nozzle 712 being inserted into the corresponding liquid inlet 131; the liquid inlet 713 is connected to the pressurizing pump; the pressurizing pump and the storage tank are both installed in the first tank body 13; obviously, as mentioned above, the fire-fighting foam proportioning mixing device is very likely to be used in a bumpy environment. Therefore, the limiting groove 133 and the limiting ring 711 are used to fix the embedded infusion device 71, preventing it from loosening or even falling off, causing raw material loss, affecting the overall mixing process, and thus improving the mixing effect of the fire-fighting foam proportioning mixing device.

[0062] See Figure 2 and Figure 3Preferably, the second tank 14 includes a tank body 143 and a pipe fixing mechanism 146; the tank body 143 is provided with a first assembly structure 1431, a second assembly structure 1432, and a pipe outlet 1433; the gas inlet 141 is disposed in the first assembly structure 1431; the output end of the gas conveying mechanism 8 is detachably installed in the first assembly structure 1431; the foam liquid inlet 142 is disposed in the second assembly structure 1432; the output end of the foam liquid conveying mechanism 9 is detachably installed in the second assembly structure 1432; the pipe fixing mechanism 146 is slidably inserted into the pipe outlet 1433 to be able to close or open the pipe outlet 1433; The pipe fixing mechanism 146 is provided with a pipe receiving hole 1461. The input ends of the gas conveying mechanism 8 and the foam liquid conveying mechanism 9 are located at the pipe outlet 1433 and pass through the pipe receiving hole 1461. It can be understood that the first assembly structure 1431 and the second assembly structure 1432 can both be set as grooves. Obviously, this setting is to simplify the overall structure and make the internal structure of the liquid storage chamber 11 more compact, so as to make room for the mixing space and the stirring space of the stirring mechanism 2. Furthermore, this setting makes it easy for users to disassemble the output end of the foam liquid conveying mechanism 9 and the output end of the gas conveying mechanism 8 for maintenance and replacement, so as to ensure the normal operation of the mechanism and thus improve the mixing effect.

[0063] See Figure 7 Preferably, both the first assembly structure 1431 and the second assembly structure 1432 are assembly grooves; the second tank 14 further includes a first sealing element 144 and a second sealing element 145; the first sealing element 144 is inserted into the first assembly structure 1431, and the first sealing element 144 is used to seal the gap between the output end of the gas conveying mechanism 8 and the first assembly structure 1431; the second sealing element 145 is inserted into the second assembly structure 1432, and the second sealing element 145 is used to seal the gap between the output end of the foam liquid conveying mechanism 9 and the second assembly structure 1432; obviously, this arrangement is to prevent the liquid in the liquid storage chamber 11 from seeping into the first assembly structure 1431, causing raw material loss and resulting in an imbalance in the mixing ratio, thereby improving the mixing effect.

[0064] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0066] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A foam proportioning device for fire fighting, characterized in that, include: A mixing tank (1) is provided with a mixed liquid outlet (12) and a liquid storage chamber (11); the two ends of the mixed liquid outlet (12) are respectively connected to the liquid storage chamber (11) and the external environment; A stirring mechanism (2) is located in the liquid storage chamber (11) and is pivotally connected to the mixing tank (1); the stirring mechanism (2) is provided with a fixed stirring structure (21). A rotary drive mechanism (3) is installed on the mixing tank (1), and the output end of the rotary drive mechanism (3) is connected to the stirring mechanism (2). An active auxiliary stirring structure (4) is movably installed on the stirring mechanism (2), and the active auxiliary stirring structure (4) and the fixed stirring structure (21) form a stirring area; An active drive mechanism (5) is installed on the stirring mechanism (2). The output end of the active drive mechanism (5) is connected to the active auxiliary stirring structure (4). The active drive mechanism (5) is used to drive the active auxiliary stirring structure (4) to move so as to adjust the size of the stirring area. A viscosity sensor (6) is disposed at the mixture outlet (12) and is used to detect the viscosity of the mixture; The numerical control system is electrically connected to the rotary drive mechanism (3), the movable drive mechanism (5), and the viscosity sensor (6); the numerical control system is used to control the operation of the rotary drive mechanism (3) and the movable drive mechanism (5) according to the viscosity data of the viscosity sensor (6) to change the size of the stirring area according to the viscosity of the mixture.

2. The foam proportioning device for fire fighting according to claim 1, characterized in that, The mixing tank (1) includes a first tank body (13) and a second tank body (14) connected in sequence; the first tank body (13) is provided with a liquid inlet (131); the second tank body (14) is provided with a gas inlet (141), a foam liquid inlet (142) and a mixed liquid outlet (12); the first tank body (13) is detachably installed on the second tank body (14) to jointly form the liquid storage chamber (11); the fire-fighting foam proportioning mixing device also includes a liquid delivery mechanism (7), a gas delivery mechanism (8) and a foam liquid... The delivery mechanism (9) is detachably installed on the first tank (13), and the output end of the delivery mechanism (7) is connected to the liquid inlet (131); the gas delivery mechanism (8) is detachably installed on the second tank (14), and the output end of the gas delivery mechanism (8) is connected to the gas inlet (141); the foam liquid delivery mechanism (9) is detachably installed on the second tank (14), and the output end of the foam liquid delivery mechanism (9) is connected to the foam liquid inlet (142).

3. The foam proportioning device for fire fighting according to claim 2, characterized in that, The stirring mechanism (2) includes a drive shaft (22); the two ends of the drive shaft (22) are pivotally connected to the first tank (13) and the second tank (14) respectively; the drive shaft (22) is provided with the fixed stirring structure (21), which is supported by the drive shaft (22) and rotates with the drive shaft (22); the rotary drive mechanism (3) is installed on the second tank (14), and the rotary drive mechanism (3) drives the end of the drive shaft (22) near the second tank (14); the movable drive mechanism (5) is installed on one end of the drive shaft (22); the movable auxiliary stirring structure (4) is movably installed on the drive shaft (22).

4. A foam proportioning device for fire fighting according to claim 3, characterized in that, One of the transmission main shaft (22) and the movable auxiliary stirring structure (4) is provided with an annular moving structure (41), and the other is provided with an annular guiding structure (221). The annular moving structure (41) is slidably nested in the annular guiding structure (221). The transmission main shaft (22) is provided with a clearance structure (222). The movable auxiliary stirring structure (4) is provided with a driven part (42), which is correspondingly provided with the clearance structure (222). The output end of the movable driving mechanism (5) passes through the clearance structure (222) and drives the driven part (42).

5. A foam proportioning device for fire fighting according to claim 4, characterized in that, The avoidance structure (222) is an arc-shaped avoidance groove; the driven part (42) is a mounting hole; the movable drive mechanism (5) includes: A plug (51) is pivotally connected to one end of the transmission main shaft (22); A transmission rod (52), one end of which is disposed on the plug (51), and the other end is sequentially inserted through the arc-shaped clearance groove and the mounting hole; the transmission rod (52) is used to make the mounting hole move along the extension trajectory of the arc-shaped clearance groove. A rotary drive mechanism (53) is mounted on the transmission spindle (22) and drives the plug-in pin (51). An elastic reset member (54) has its two ends abutting against the outer walls of the rotary drive mechanism (53) and the transmission main shaft (22), respectively, so that the rotary drive mechanism (53) has a tendency to move away from the transmission main shaft (22); A fixing plate (55) is detachably mounted on the transmission rod (52) at one end away from the plug (51); the fixing plate (55) is used to fix the transmission rod (52).

6. A foam proportioning device for fire fighting according to claim 5, characterized in that, The fixed stirring structure (21) is provided in multiple ways, and the multiple fixed stirring structures (21) are distributed at intervals along the length direction of the transmission main shaft (22); the movable auxiliary stirring structure (4) is provided in multiple ways, and the multiple movable auxiliary stirring structures (4) and the multiple fixed stirring structures (21) are arranged alternately along the length direction of the transmission main shaft (22); the arc-shaped clearance groove is provided in multiple ways, and the multiple arc-shaped clearance grooves are distributed at intervals along the circumference of the transmission main shaft (22); the mounting hole is provided in multiple ways, and the multiple mounting holes are distributed at intervals along the circumference of the transmission main shaft (22), and each mounting hole is arranged in a one-to-one correspondence with each arc-shaped clearance groove; the transmission rod (52) is provided in multiple ways, and the multiple transmission rods (52) are distributed at intervals along the circumference of the transmission main shaft (22), and each transmission rod (52) is inserted into the corresponding arc-shaped clearance groove.

7. A foam proportioning device for fire fighting according to claim 2, characterized in that, The first tank (13) is provided with an annular mounting groove (132), which extends along the circumference of the first tank (13); the liquid inlet (131) is provided on the bottom wall of the annular mounting groove (132); there are multiple liquid inlets (131), which are distributed at intervals along the circumference of the first tank (13); the infusion mechanism (7) is installed in the annular mounting groove (132), and the output end of the infusion mechanism (7) is connected to each of the liquid inlets (131).

8. A foam proportioning device for fire fighting according to claim 7, characterized in that, The annular mounting groove (132) has a limiting groove (133) on its sidewall; the infusion mechanism (7) includes an embedded infusion set (71), a pressurizing pump and a storage tank connected in sequence; the embedded infusion set (71) has a limiting ring (711), a liquid nozzle (712) and an inlet (713), the limiting ring (711) being nested in the limiting groove (133); there are multiple liquid nozzles (712), each of which is inserted into the corresponding liquid inlet (131); the inlet (713) is connected to the pressurizing pump; the pressurizing pump and the storage tank are both installed in the first tank body (13).

9. A foam proportioning device for fire fighting according to claim 2, characterized in that, The second tank (14) includes a tank body (143) and a pipe fixing mechanism (146); the tank body (143) is provided with a first assembly structure (1431), a second assembly structure (1432), and a pipe outlet (1433); the gas inlet (141) is disposed on the first assembly structure (1431); the output end of the gas delivery mechanism (8) is detachably installed on the first assembly structure (1431); the foam liquid inlet (142) is disposed on the second assembly structure (1432). The output end of the foam liquid conveying mechanism (9) is detachably installed on the second assembly structure (1432); the pipe fixing mechanism (146) is slidably inserted into the pipe outlet (1433) so as to close or open the pipe outlet (1433); the pipe fixing mechanism (146) is provided with a pipe receiving hole (1461), and the input ends of the gas conveying mechanism (8) and the foam liquid conveying mechanism (9) are located at the pipe outlet (1433) and pass through the pipe receiving hole (1461).

10. A foam proportioning device for fire fighting according to claim 9, characterized in that, Both the first assembly structure (1431) and the second assembly structure (1432) are assembly grooves; the second tank (14) also includes a first sealing element (144) and a second sealing element (145); the first sealing element (144) is inserted into the first assembly structure (1431) and is used to seal the gap between the output end of the gas conveying mechanism (8) and the first assembly structure (1431); the second sealing element (145) is inserted into the second assembly structure (1432) and is used to seal the gap between the output end of the foam liquid conveying mechanism (9) and the second assembly structure (1432).

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