Mixing device for production of foam fire extinguisher and use method of mixing device

Abstract

The invention discloses a mixing device for foam extinguisher production and a use method thereof, and belongs to the technical field of mixing and stirring. A mixing device for foam fire extinguisher production comprises a tank body and a cooling cylinder used for controlling the temperature of the tank body, and further comprises a stirring assembly which comprises a stirring shaft serving as a main shaft of the stirring assembly and rotationally arranged in the tank body, and the stirring shaft is in a cylinder shape with two open ends; the sleeve is fixedly arranged on the outer ring surface of the stirring shaft and serves as a stirring blade of the stirring assembly, and the sleeve communicates with the interior of the stirring shaft; the scraping plate assembly comprises a scraping plate which is arranged at the end, far away from the stirring shaft, of the sleeve, and the scraping plate is telescopic and can be attached to the inner wall of the tank body; the scraper assembly can be used for scraping off raw materials on the inner wall of the tank body, so that the raw materials close to the inner wall of the tank body can be mixed with middle raw materials, and the heat exchange efficiency of the cooling cylinder to the tank body is better.

Description

Technical Field

[0001] The invention relates to the technical field of mixing and stirring, and in particular to a mixing device for producing a foam fire extinguisher and a use method thereof. Background Art

[0002] The fire extinguishing principle of foam fire extinguisher is that it can spray a large amount of carbon dioxide and foam when extinguishing fire. They can adhere to the combustibles, isolate the combustibles from the air, and achieve the purpose of fire extinguishing. It is mainly divided into portable foam fire extinguisher, trolley foam fire extinguisher and air foam fire extinguisher. In the trolley foam fire extinguisher, foam stock solution is often used as the storage and foam generating medium and stored in the foam tank. The foam stock solution is mainly made by mixing raw materials such as water, emulsifier, in vitro plasticizer, surfactant, foaming agent and foam protective agent in a certain proportion, and mixing them fully and evenly through high-speed stirring. In this process, the corresponding stirring production equipment is needed to work.

[0003] In the specific mixing production process, the first and most important point is to ensure the adequacy of mixing to ensure the uniform distribution of the components. At the same time, due to the presence of a foaming agent during the mixing process, it is also necessary to pay attention to controlling the temperature. When the temperature rises, the foaming agent will produce too much foam, affecting the subsequent processes. For example, in the prior art, a Chinese invention patent with application number 202410209803.1 discloses a raw material mixing device for the manufacture of a foam fire extinguisher. In this scheme, a cooling flow channel is provided on the tank body for cooling, which belongs to heat exchange cooling. However, when this arrangement is used for heat exchange, the material located on the inner wall of the tank body is preferentially exchanged, and the material located in the middle cannot be heat exchanged in time, so it needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the temperature cannot be quickly controlled when mixing and stirring the raw materials of the foam fire extinguisher, and to propose a mixing device for the production of the foam fire extinguisher and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A mixing device for producing a foam fire extinguisher, comprising a tank body and a cooling cylinder for controlling the temperature of the tank body, and further comprising: A stirring assembly comprising: A stirring shaft, which is used as the main shaft of the stirring assembly and is rotatably arranged in the tank body. The stirring shaft is in the shape of a cylinder with openings at both ends; A sleeve, which is fixedly arranged on the outer annular surface of the stirring shaft and serves as a stirring blade of the stirring assembly, and the sleeve is communicated with the interior of the stirring shaft; A scraper assembly comprising: A scraper is arranged on the end of the sleeve away from the stirring shaft, and the scraper is retractable and can be attached to the inner wall of the tank; A driving assembly, which is used to control the extension and retraction of the scraper, and includes a pipeline assembly and an air cavity assembly. The air cavity assembly is arranged at the upper inner part of the tank body and generates power by the pressure in the tank body. The pipeline assembly is arranged inside the stirring shaft and the sleeve and is used to transmit power. An internal cooling assembly, which is used to control the temperature inside the tank, and includes a medium flow channel formed by a stirring shaft and a sleeve; The valve assembly is used to control the start and stop of the internal cooling assembly. It relies on the air cavity assembly to control the opening and closing or uses the pressure of the input medium to control the opening and closing. At the same time, the valve assembly can also provide a power source for the air cavity assembly. The valve assembly is arranged on the top of the stirring shaft; The auxiliary stirring component is arranged on the sleeve and can rotate and stir after the internal cooling component is started.

[0006] Preferably, the scraper assembly further comprises: A fixed cylinder, which is fixedly arranged on an end of the sleeve away from the stirring shaft; A slider, one end of which is slidably arranged inside the fixed cylinder, and the other end of which extends out of the fixed cylinder and is fixedly connected to the scraper; The reset piece is arranged inside the fixed cylinder and can make the sliding block approach the sleeve.

[0007] Preferably, the pipeline assembly comprises: An axial air pipe is fixedly disposed inside the stirring shaft through a first baffle, and the axial air pipe and the stirring shaft are coaxial; The transverse air pipe is fixedly arranged on the outer annular surface of the axial air pipe, and the two are internally connected; The transverse air pipe is located inside the sleeve, one end of the transverse air pipe away from the axial air pipe is fixedly connected to the fixed tube, and the transverse air pipe is communicated with the inside of the fixed tube.

[0008] Preferably, the air cavity component comprises: A partition plate is sealingly and slidably disposed on the inner upper part of the tank body; A joint, in which a fixed inner tube is fixedly arranged, and the partition is connected with the top end of the fixed inner tube through a first connecting tube; A bracket is fixedly arranged on the inner upper part of the tank body, and the bracket is located below the partition, and the joint is fixedly arranged on the bracket through a fixing frame; The bottom end of the joint is rotatably connected to the top end of the stirring shaft, and the cavity of the joint is communicated with the stirring shaft. The bottom end of the fixed inner tube is rotatably connected to the axial air pipe.

[0009] Preferably, the valve assembly comprises: A piston cylinder, which is connected to the cavity of the joint through a second connecting pipe; A piston head and a piston rod, wherein the bottom end of the piston rod is fixedly arranged on the top end of the piston head, and the top end of the piston rod extends out of the top end of the piston cylinder; An elastic member is arranged inside the piston cylinder and above the piston head to provide a force for the piston head to move downward; A medium inlet pipe is arranged at the bottom end of the piston cylinder, one end of the medium inlet pipe is fixedly connected to the piston cylinder, and the other end thereof passes through the tank body and extends to the outside of the tank body.

[0010] Preferably, the valve assembly further comprises a connecting rod, the top end of the connecting rod is fixedly connected to the partition, a sliding groove is provided at the lower portion of the connecting rod, and a boss is fixedly provided at the top end of the piston rod, and the boss is slidably provided inside the sliding groove.

[0011] Preferably, the inner cooling assembly further comprises a second baffle, the second baffle is fixedly disposed inside the sleeve, the second baffle is flush with the corresponding first baffle, and the second baffle is fixedly connected to the first baffle; The second baffle and the transverse air pipe together divide the interior of the sleeve into two parts, an upper part and a lower part, and an end of the second baffle away from the stirring shaft does not contact the sleeve.

[0012] Preferably, the auxiliary stirring assembly comprises: A rotating shaft, the bottom end of which is rotatably connected to the transverse air pipe, and the other end of which passes through the sleeve and extends to the outside of the sleeve, and the rotating shaft and the sleeve are in sealed rotatable connection; Auxiliary stirring blades, which are fixedly arranged at the outer end of the rotating shaft; The fan blade is fixedly arranged at the lower part of the rotating shaft and is located inside the sleeve and outside the transverse air pipe.

[0013] Preferably, the cooling cylinder is fixedly arranged on the periphery of the tank body, a spiral circulating water channel is opened inside the cooling cylinder, a circulating outlet pipe is fixedly arranged on the upper part of the cooling cylinder, and a circulating inlet pipe is fixedly arranged on the lower part, and the circulating outlet pipe and the circulating inlet pipe are both connected to the circulating water channel.

[0014] The present invention also provides a method for using a mixing device for producing a foam fire extinguisher, comprising the following steps: S1: After the raw materials are fed into the tank, they are stirred and mixed using a stirring component; S2: As the stirring and mixing process proceeds, the temperature inside the tank will increase, and the air pressure inside the tank will also increase accordingly. At this time, the cooling cylinder is used for preliminary cooling; S3: When the temperature inside the tank is too high, its internal pressure will also increase, which can make the air cavity component move, and then drive the scraper to stick to the inner wall of the tank through the pipeline component, so that the raw materials on the inner wall can be scraped off, accelerating the overall heat exchange; S4: If the temperature continues to rise, it will cause the internal pressure of the tank to be higher, so that the valve assembly can be controlled to open, allowing the medium to flow into the medium flow channel, further reducing the temperature; S5: Complete stirring and mixing, and unload.

[0015] Compared with the prior art, the present invention provides a mixing device for producing a foam fire extinguisher and a method of using the same, which have the following beneficial effects.

[0016] The scraper assembly provided in the present invention can be used to scrape away the raw materials on the inner wall of the tank body, so that the raw materials close to the inner wall of the tank body can be mixed with the raw materials in the middle, thereby improving the heat exchange efficiency of the cooling cylinder to the tank body, thereby solving the problem in the prior art that the temperature cannot be quickly controlled when mixing and stirring the raw materials of the foam fire extinguisher.

[0017] The air cavity assembly provided in the present invention can, on the one hand, relieve the pressure in the stirring area inside the tank body, and on the other hand, control the scraper to extend and stick to the inner wall of the tank body for scraping and cleaning, thereby improving the cleaning effect.

[0018] The present invention can further achieve the effect of rapid cooling during the stirring process by providing an internal cooling component, and at the same time, the start-up of the internal cooling component can be controlled by the air cavity component to achieve the effect of adaptive start-up.

[0019] The present invention provides a secondary stirring component, which can be started under the drive of the internal cooling component after the internal cooling component is started, so as to improve the stirring effect and achieve a better heat exchange and cooling effect in combination with the internal cooling component.

[0020] Other advantages, objectives and features of the present invention will be described in part in the following description; and in part, will be apparent to those skilled in the art based on an examination of the following; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0023] Figure 3 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0024] Figure 4 For the present invention Figure 2 Enlarged structural diagram at B in the middle.

[0025] Figure 5It is a schematic diagram of the structure of the scraper assembly and the auxiliary stirring assembly in the present invention.

[0026] Figure 6 It is a cross-sectional structural schematic diagram of the scraper assembly and the auxiliary stirring assembly in the present invention.

[0027] Figure 7 It is a schematic diagram of the second cross-sectional structure of the scraper assembly and the auxiliary stirring assembly in the present invention.

[0028] Figure 8 It is a schematic diagram of the cross-section structure of the scraper assembly and the auxiliary stirring assembly in the present invention.

[0029] Fig. 9 It is a schematic diagram of the structure of the valve assembly and the joint in the present invention.

[0030] In the figure: 1. Tank body; 2. Feed pipe; 3. Cooling cylinder; 4. Motor; 5. Stirring shaft; 6. Discharge pipe; 7. Circulation inlet pipe; 8. Circulation outlet pipe; 9. Medium inlet pipe; 10. Partition; 11. Auxiliary stirring blade; 12. Scraper; 13. Sleeve; 14. Axial air pipe; 15. Circulating water channel; 16. Bracket; 17. Joint; 18. First connecting pipe; 19. Connecting rod; 20. Piston rod; 21. Elastic member; 22. Piston head; 23. Piston cylinder; 24. Fixed frame; 25. Cavity; 26. Fixed inner tube; 27. Sliding block; 28. Fixed cylinder; 29. ​​Horizontal air pipe; 30. First baffle; 31. Rotating shaft; 32. Resetting member; 33. Fan blade; 34. Second baffle; 35. Second connecting pipe. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Reference Figure 1-Figure 9 A mixing device for producing a foam fire extinguisher, comprising a tank body 1 and a cooling cylinder 3 for controlling the temperature of the tank body 1, and further comprising: A stirring assembly comprising: The stirring shaft 5 is used as the main shaft of the stirring assembly and is rotatably arranged in the tank body 1. The stirring shaft 5 is in the shape of a cylinder with openings at both ends.

[0033] The sleeve 13 is fixedly arranged on the outer ring surface of the stirring shaft 5, and is used as a stirring blade of the stirring assembly, and the sleeve 13 is connected with the interior of the stirring shaft 5; a plurality of sleeves 13 are arranged, and all are fixedly arranged on the stirring shaft 5, and the plurality of sleeves 13 are located at different heights, and each sleeve 13 is connected with the interior of the stirring shaft 5.

[0034] A scraper assembly comprising: The scraper 12 is arranged on the end of the sleeve 13 away from the stirring shaft 5, and the scraper 12 is retractable and can be attached to the inner wall of the tank body 1; the number of scraper assemblies is the same as the number of sleeves 13, and one set of scraper assemblies corresponds to one sleeve 13; in this embodiment, six sleeves 13 are provided.

[0035] The cross-sectional shape of the scraper 12 is roughly triangular, see Figure 5 The side close to the inner wall of the tank body 1 is an outwardly convex arc surface, which can fit with the inner wall of the tank body 1, and the side of the scraper 12 facing the sleeve 13 is an inwardly concave arc surface, and the tip of the scraper 12 faces the moving direction of the scraper 12; in order to improve the normal stirring effect, an inclined guide plate is fixedly provided on the concave arc surface of the scraper 12, and one end of the guide plate close to the moving direction is lower than the other end. Such a setting can exert an upward flipping force on the raw materials during the stirring process, thereby achieving a better stirring effect.

[0036] The driving assembly is used to control the extension and retraction of the scraper 12, and includes a pipeline assembly and an air cavity assembly. The air cavity assembly is arranged at the upper inner part of the tank body 1, and generates power by relying on the pressure inside the tank body 1. The pipeline assembly is arranged inside the stirring shaft 5 and the sleeve 13, and is used to transmit power.

[0037] The internal cooling component is used to control the temperature inside the tank body 1 , and includes a medium flow channel formed by the stirring shaft 5 and the sleeve 13 .

[0038] The valve assembly is used to control the start and stop of the internal cooling assembly. It relies on the air cavity assembly to control the opening and closing or uses the pressure of the input medium to control the opening and closing. At the same time, the valve assembly can also provide a power source for the air cavity assembly. The valve assembly is arranged on the top of the stirring shaft 5.

[0039] The auxiliary stirring component is arranged on the sleeve 13 and can perform rotational stirring after the internal cooling component is started.

[0040] In a specific embodiment of the present invention, the cooling cylinder 3 is used to cool and control the temperature of the tank body 1 from the outside. When the temperature inside the tank body 1 increases due to heat generated by the chemical reaction between the raw materials or due to frictional heat generated during stirring, the cooling cylinder 3 can be used to cool and control the temperature to avoid excessive foaming of the foaming agent caused by the temperature increase during the mixing stage; when the temperature inside the tank body 1 cannot be effectively controlled, the pressure inside the tank body 1 will also increase due to the increase in temperature. At this time, the air cavity component generates power through the generated pressure, and then transmits it to the scraper 12 through the pipeline component, so that the scraper 12 is attached to the inner wall of the tank body 1, and then the raw materials attached to the inner wall of the tank body 1 are scraped off the inner wall of the tank body 1, so that the raw materials close to the inner wall can be fully mixed with the middle raw materials, thereby improving the cooling effect; if the temperature rises greatly, the air cavity component can further drive the valve component to open and start the internal cooling component, thereby realizing cooling inside the tank body 1. At the same time, after the internal cooling component is started, it can drive the auxiliary stirring component to start, and further stir, thereby achieving improved stirring effect and further improving heat exchange effect.

[0041] When the inside of the tank body 1 is cleaned after use, a medium can be input into the inner cooling component, and the pressure of the input medium can be increased so that it can push open the valve component, and at the same time provide power for the air cavity component, so that the scraper 12 extends outward and sticks to the inner wall of the tank body 1, so that the scraper 12 can scrape and clean the inner wall of the tank body 1 during the cleaning process, thereby improving the cleaning effect.

[0042] A feed pipe 2 is fixedly provided on the upper portion of the tank body 1 , and the feed pipe 2 is connected to the stirring area in the tank body 1 . A discharge pipe 6 is fixedly provided on the bottom of the tank body 1 for discharging the mixed product.

[0043] The bottom end of the stirring shaft 5 passes through the bottom of the tank body 1 and extends to the outside of the tank body 1. The bottom of the stirring shaft 5 is sealed and rotatably connected to the bottom of the tank body 1. The stirring shaft 5 can be driven to rotate by a motor 4, and the motor 4 is fixedly arranged at the bottom of the tank body 1. The output end of the motor 4 and the bottom end of the stirring shaft 5 can be connected through a pulley group to transmit power.

[0044] The scraper assembly also includes: The fixed cylinder 28 is fixedly disposed on an end of the sleeve 13 away from the stirring shaft 5 .

[0045] The slider 27 has one end slidably disposed inside the fixed tube 28 , and the other end extends out of the fixed tube 28 and is fixedly connected to the scraper 12 .

[0046] The reset member 32 is arranged inside the fixed tube 28 and can make the slider 27 approach the sleeve 13. In the present embodiment, the reset member 32 adopts a tension spring, one end of the reset member 32 is fixedly connected to the slider 27, and the other end is fixedly connected to one end of the fixed tube 28 close to the sleeve 13. Under normal conditions, the slider 27 is located close to the sleeve 13 under the action of the reset member 32. In this state, the slider 27 is in a retracted state, and the scraper 12 cannot contact the inner wall of the tank body 1.

[0047] When the scraper assembly is in use, power is generated by the air cavity assembly, which is then transmitted to the fixed cylinder 28 through the pipeline assembly, and then the slider 27 is pushed to overcome the force of the reset member 32, so that the slider 27 moves away from the sleeve 13, thereby causing the slider 27 to push the scraper 12 close to the inner wall of the tank body 1 until the scraper 12 can contact the inner wall of the tank body 1.

[0048] The piping assembly includes: The axial air pipe 14 is fixedly arranged inside the stirring shaft 5 through the first baffle 30, and the axial air pipe 14 and the stirring shaft 5 are coaxial; the axial air pipe 14 can rotate with the rotation of the stirring shaft 5; the top end of the axial air pipe 14 is open and the bottom end is closed.

[0049] The transverse air pipe 29 is fixedly arranged on the outer annular surface of the axial air pipe 14, and the two are internally connected.

[0050] The transverse air pipe 29 is located inside the sleeve 13 , and one end of the transverse air pipe 29 away from the axial air pipe 14 is fixedly connected to the fixed tube 28 , and the transverse air pipe 29 is communicated with the inside of the fixed tube 28 .

[0051] The number of the transverse air pipes 29 is the same as the number of the sleeves 13 , and one transverse air pipe 29 corresponds to one sleeve 13 , and the corresponding transverse air pipe 29 is disposed in the corresponding sleeve 13 .

[0052] The first baffle 30 is shaped like a ring with a notch, and its outer diameter is the same as the inner diameter of the stirring shaft 5, and the inner diameter is the same as the outer diameter of the axial air pipe 14. The outer annular surface of the first baffle 30 is fixedly connected to the inner annular surface of the stirring shaft 5, and the inner annular surface is fixedly connected to the outer annular surface of the axial air pipe 14, and the outer annular surface of one end of the transverse air pipe 29 connected to the axial air pipe 14 is fixedly connected to the notch of the first baffle 30.

[0053] The air chamber assembly includes: The partition 10 is sealingly and slidably arranged on the inner upper part of the tank body 1; the partition 10 divides the interior of the tank body 1 into two upper and lower areas, and the area below the partition 10 is the stirring area; when the temperature of the stirring area inside the tank body 1 rises, the air pressure therein will increase, and then the partition 10 can be pushed upward to achieve the effect of balancing the pressure in the stirring area.

[0054] The joint 17 has a fixed inner tube 26 fixedly disposed therein, and the partition 10 is connected to the top end of the fixed inner tube 26 via a first connecting tube 18. The first connecting tube 18 is bendable so that the partition 10 is not affected by the fixed joint 17 during the up and down movement.

[0055] A bracket 16 is fixedly disposed on the inner upper portion of the tank body 1 , and the bracket 16 is located below the partition 10 , and the joint 17 is fixedly disposed on the bracket 16 via a fixing frame 24 .

[0056] The bottom end of the joint 17 is rotatably connected to the top end of the stirring shaft 5 , and the cavity 25 of the joint 17 is communicated with the stirring shaft 5 . The bottom end of the fixed inner tube 26 is rotatably connected to the axial air pipe 14 .

[0057] When the air cavity assembly is in use, when the temperature in the stirring area increases and the air pressure increases, the partition 10 can be pushed upward, so that the gas above the partition 10 is compressed. Since the area above the partition 10 is connected to the fixed tube 28 through the first connecting tube 18, the joint 17, the axial air pipe 14 and the transverse air pipe 29 in the pipeline assembly, when the gas above the partition 10 is compressed, the gas in the pipeline assembly and the fixed tube 28 will also be compressed, generating an outward expansion force, which can then push the slider 27 to move, so that the slider 27 overcomes the force of the reset member 32 and moves outward, thereby pushing the scraper 12 to move, so that the scraper 12 is attached to the inner wall of the tank body 1.

[0058] The valve assembly includes: The piston cylinder 23 is connected to the cavity 25 of the joint 17 through the second connecting pipe 35 .

[0059] The piston head 22 and the piston rod 20 , the bottom end of the piston rod 20 is fixedly arranged on the top end of the piston head 22 , and the top end of the piston rod 20 extends out of the top end of the piston cylinder 23 .

[0060] The elastic member 21 is disposed inside the piston cylinder 23 and located above the piston head 22 to provide a force for the piston head 22 to move downward. The elastic member 21 can be a spring.

[0061] A medium inlet pipe 9 is provided at the bottom end of the piston cylinder 23, one end of the medium inlet pipe 9 is fixedly connected to the piston cylinder 23, and the other end passes through the tank body 1 and extends to the outside of the tank body 1; the medium can be water, and the other end of the medium inlet pipe 9 is connected to a high-pressure water pump. When in use, the high-pressure water pump is used to transport water into the medium inlet pipe 9.

[0062] Under normal conditions, the piston head 22 is blocked at the connection between the piston cylinder 23 and the second connecting pipe 35 by the elastic member 21. At this time, the valve is in a closed state, and the water pressure of the high-pressure water pump cannot push the valve open.

[0063] The valve assembly also includes a connecting rod 19, the top end of which is fixedly connected to the partition 10, a slide groove is provided at the bottom of the connecting rod 19, and a boss is fixedly provided at the top end of the piston rod 20. The boss is slidably provided inside the slide groove. Under normal conditions (i.e., when the valve is in a closed state), the boss is located at the upper position in the slide groove.

[0064] The inner cooling assembly further includes a second baffle plate 34 , which is fixedly disposed inside the sleeve 13 , and is flush with the corresponding first baffle plate 30 , and the second baffle plate 34 and the first baffle plate 30 are fixedly connected.

[0065] The second baffle 34 and the transverse air pipe 29 together divide the interior of the sleeve 13 into two parts, an upper part and a lower part, and an end of the second baffle 34 away from the stirring shaft 5 does not contact the sleeve 13 .

[0066] When the valve assembly and the internal cooling assembly are in use, after the temperature of the stirring area rises, the air pressure rises, and the partition 10 moves up. Since the boss is located in the upper position of the slide, when the partition 10 moves upward, it will not directly drive the piston rod 20 to move upward, but the slide moves up, so that the bottom of the slide contacts the boss. At this time, the scraper 12 is attached to the inner wall of the tank body 1, so as to achieve the effect of accelerating the cooling. If the temperature continues to rise, the air pressure will further increase, so the partition 10 will move up a second time, because the gas above the partition 10 and in the pipeline assembly has been compressed before, and the scraper 12 has been attached to the inner wall of the tank body 1. At this time, the gas compressed for the second time can expand the first connecting pipe 18, increase the volume, so that the partition 10 can move up a second time. During the second upward movement, the slide groove of the connecting rod 19 drives the piston rod 20 to move upward, so that the piston head 22 moves upward, and then the effect of opening the valve is achieved, and then the water in the medium inlet pipe 9 will enter the second connecting pipe 35 through the piston cylinder 23, and then enter the joint 17, and then enter the stirring shaft 5. Then it will be blocked by the first baffle 30, and then enter the inner upper half of the sleeve 13, and after flowing to the end of the sleeve 13 away from the stirring shaft 5, it enters the inner lower half of the sleeve 13, and then enters the stirring shaft 5 again, and circulates into the remaining sleeves 13 until it flows out from the bottom end of the stirring shaft 5. In this process, the stirring shaft 5 and the sleeve 13 are used to exchange heat inside the tank body 1 to achieve a further cooling effect.

[0067] The auxiliary stirring assembly includes: The rotating shaft 31 has a bottom end rotatably connected to the transverse air pipe 29 , and the other end passes through the sleeve 13 and extends to the outside of the sleeve 13 , and the rotating shaft 31 and the sleeve 13 are in sealed rotatable connection.

[0068] The auxiliary stirring blade 11 is fixedly disposed on the outer end of the rotating shaft 31 .

[0069] The fan blade 33 is fixedly disposed at the lower portion of the rotating shaft 31 and is located inside the sleeve 13 and outside the transverse air pipe 29 .

[0070] The starting condition of the auxiliary stirring component is that after the internal cooling component is started, the water passing through the sleeve 13 will drive the fan blades 33 to rotate, and then the rotating shaft 31 will rotate, thereby realizing the rotation of the auxiliary stirring blades 11, thereby enhancing the stirring effect, cooperating with the internal cooling component to accelerate the heat exchange effect and complete the cooling; when the auxiliary stirring component is not started, the auxiliary stirring blades 11 will move freely as the stirring operation proceeds.

[0071] The cooling cylinder 3 is fixedly arranged on the periphery of the tank body 1, and a spiral circulating water channel 15 is opened inside the cooling cylinder 3. A circulating outlet pipe 8 is fixedly arranged on the upper part of the cooling cylinder 3, and a circulating inlet pipe 7 is fixedly arranged on the lower part. The circulating outlet pipe 8 and the circulating inlet pipe 7 are both connected to the circulating water channel 15. When the cooling cylinder 3 is in use, water is transported from the circulating inlet pipe 7 to the circulating water channel 15, and then discharged from the circulating outlet pipe 8. In this process, the water is used to take away the heat of the tank body 1, so as to achieve the effect of temperature control and cooling.

[0072] Mixing and stirring process: the raw materials are transported from the feed pipe 2 to the tank body 1, and then the motor 4 is started to drive the stirring shaft 5 to rotate, and the sleeve 13 is used to mix and stir the raw materials. Some chemical reactions will occur between the raw materials to release heat, so that the temperature in the tank body 1 increases, and the air pressure in the tank body 1 will also increase. At this time, the cooling cylinder 3 is used to control the temperature and cool down. As the stirring and mixing proceeds, if the temperature is not effectively controlled, the temperature will continue to rise, and the pressure will also increase, and then the partition 10 can be lifted up, and then the gas above the partition 10 and the gas in the pipeline assembly are compressed, and then the compressed gas will push the slider 27 to move outward, so that the scraper 12 is attached to the inner wall of the tank body 1, so that the raw materials on the inner wall of the tank body 1 can leave the inner wall of the tank body 1, thereby accelerating the heat exchange efficiency; if the temperature still rises, the partition 10 will move up for the second time. During the second upward movement, the connecting rod 19 will pull the piston rod 20 up, and then open the valve to start the internal cooling assembly. After the piston head 22 is driven up by the piston rod 20, the medium enters the pipe 9 The water will enter the stirring shaft 5 and the sleeve 13, achieving the effect of heat exchange inside the tank body 1. At the same time, when the water passes through the sleeve 13, it can drive the fan blades 33 of the auxiliary stirring assembly to rotate, so that the auxiliary stirring blades 11 start the stirring operation, and accelerate the heat exchange efficiency of the internal cooling assembly; when the temperature drops, the air pressure in the stirring area of ​​the tank body 1 will also drop, and then the partition 10 will move down. First, the piston head 22 in the valve assembly will be reset under the action of the elastic member 21, so that the water in the medium inlet pipe 9 cannot enter the stirring shaft 5, and the operation of the internal cooling assembly will be stopped. As the partition 10 descends, the space above the partition 10 will also become larger. After the gas there and the gas in the pipeline assembly have sufficient space, the scraper 12 will be driven by the reset member 32 to move closer to the sleeve 13 and leave the inner wall of the tank body 1, so as to avoid the scraper 12 always contacting the inner wall of the tank body 1 and causing the tank body 1 and the scraper 12 to wear faster. After the stirring is completed, the product is discharged from the discharge pipe 6.

[0073] During the process of cleaning the inside of the tank body 1, the output power of the high-pressure water pump can be increased so that the water pressure can push open the piston head 22. When the piston head 22 is pushed open and moves upward, the piston rod 20 can push up the connecting rod 19, and then the partition 10 moves upward, and then the scraper 12 is attached to the inner wall of the tank body 1, thereby scraping off the residue on the inner wall of the tank body 1.

[0074] A method for using a mixing device for producing a foam fire extinguisher comprises the following steps: S1: After the raw materials are fed into the tank 1, they are stirred and mixed by using a stirring assembly.

[0075] S2: As the stirring and mixing process proceeds, the temperature inside the tank body 1 will increase, and the air pressure inside the tank body 1 will also increase accordingly. At this time, the cooling cylinder 3 is used to perform preliminary cooling.

[0076] S3: When the temperature inside the tank body 1 is too high, the internal pressure will also increase, so that the air cavity component can move, and then the scraper 12 is driven to stick to the inner wall of the tank body 1 through the pipeline component, so that the raw materials on the inner wall can be scraped off, thereby accelerating the overall heat exchange.

[0077] S4: If the temperature continues to rise, the pressure inside the tank body 1 will be higher, so that the valve assembly can be controlled to open, allowing the medium to flow into the medium flow channel, thereby achieving further cooling inside.

[0078] S5: Complete stirring and mixing, and unload.

[0079] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0081] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A mixing device for producing a foam fire extinguisher, comprising a tank body (1) and a cooling cylinder (3) for controlling the temperature of the tank body (1), It is characterized in that Also includes: A stirring assembly comprising: A stirring shaft (5), which serves as the main shaft of the stirring assembly and is rotatably arranged in the tank body (1); the stirring shaft (5) is in the shape of a cylinder with openings at both ends; A sleeve (13) is fixedly arranged on the outer annular surface of the stirring shaft (5) and serves as a stirring blade of the stirring assembly, and the sleeve (13) is in communication with the interior of the stirring shaft (5); A scraper assembly comprising: A scraper (12) is arranged on the end of the sleeve (13) away from the stirring shaft (5), and the scraper (12) is retractable and can be attached to the inner wall of the tank body (1); A driving assembly, which is used to control the extension and retraction of the scraper (12), and comprises a pipeline assembly and an air cavity assembly, wherein the air cavity assembly is arranged at the upper inner portion of the tank body (1) and generates power by relying on the pressure in the tank body (1), and the pipeline assembly is arranged inside the stirring shaft (5) and the sleeve (13) and is used to transmit power; An internal cooling component, which is used to control the temperature inside the tank body (1), and comprises a medium flow channel formed by a stirring shaft (5) and a sleeve (13); A valve assembly, which is used to control the start and stop of the internal cooling assembly. The valve assembly is controlled by the air cavity assembly or by the pressure of the input medium. The valve assembly can also provide a power source for the air cavity assembly. The valve assembly is arranged on the top of the stirring shaft (5); The auxiliary stirring component is arranged on the sleeve (13) and can perform rotational stirring after the internal cooling component is started.

2. A mixing device for producing a foam fire extinguisher according to claim 1, It is characterized in that The scraper assembly also includes: A fixed cylinder (28) fixedly disposed on an end of the sleeve (13) away from the stirring shaft (5); A slider (27), one end of which is slidably disposed inside the fixed cylinder (28), and the other end of which extends out of the fixed cylinder (28) and is fixedly connected to the scraper (12); The reset member (32) is arranged inside the fixed tube (28) and can make the slider (27) approach the sleeve (13).

3. A mixing device for producing a foam fire extinguisher according to claim 2, It is characterized in that The pipeline assembly comprises: An axial air pipe (14) is fixedly arranged inside the stirring shaft (5) through a first baffle (30), and the axial air pipe (14) and the stirring shaft (5) are coaxial; A transverse air pipe (29) fixedly arranged on the outer annular surface of the axial air pipe (14), and the two are internally connected; The transverse air pipe (29) is located inside the sleeve (13), one end of the transverse air pipe (29) away from the axial air pipe (14) is fixedly connected to the fixed cylinder (28), and the transverse air pipe (29) is communicated with the interior of the fixed cylinder (28).

4. A mixing device for producing a foam fire extinguisher according to claim 3, It is characterized in that The air cavity component comprises: A partition (10) is sealingly and slidably disposed on the inner upper portion of the tank body (1); A joint (17) having a fixed inner tube (26) fixedly disposed therein, wherein the partition plate (10) is connected to the top end of the fixed inner tube (26) via a first connecting tube (18); A bracket (16) is fixedly arranged on the inner upper part of the tank body (1), and the bracket (16) is located below the partition (10), and the joint (17) is fixedly arranged on the bracket (16) via a fixing frame (24); The bottom end of the joint (17) is rotatably connected to the top end of the stirring shaft (5), and the cavity (25) of the joint (17) is in communication with the stirring shaft (5). The bottom end of the fixed inner tube (26) is rotatably connected to the axial air pipe (14).

5. A mixing device for producing a foam fire extinguisher according to claim 4, It is characterized in that The valve assembly comprises: A piston cylinder (23) connected to the cavity (25) of the joint (17) via a second connecting pipe (35); A piston head (22) and a piston rod (20), wherein the bottom end of the piston rod (20) is fixedly arranged on the top end of the piston head (22), and the top end of the piston rod (20) extends out of the top end of the piston cylinder (23); An elastic member (21) is arranged inside the piston cylinder (23) and above the piston head (22), and provides a force for the piston head (22) to move downward; A medium inlet pipe (9) is provided at the bottom end of the piston cylinder (23); one end of the medium inlet pipe (9) is fixedly connected to the piston cylinder (23), and the other end passes through the tank body (1) and extends to the outside of the tank body (1).

6. A mixing device for producing a foam fire extinguisher according to claim 5, It is characterized in that The valve assembly further comprises a connecting rod (19), the top end of which is fixedly connected to the partition plate (10), a slide groove is provided at the bottom of the connecting rod (19), and a boss is fixedly provided at the top end of the piston rod (20), and the boss is slidably provided inside the slide groove.

7. A mixing device for producing a foam fire extinguisher according to claim 3, It is characterized in that The inner cooling assembly further comprises a second baffle (34), the second baffle (34) being fixedly disposed inside the sleeve (13), the second baffle (34) being flush with the corresponding first baffle (30), and the second baffle (34) and the first baffle (30) being fixedly connected; The second baffle (34) and the transverse air pipe (29) together divide the interior of the sleeve (13) into two upper and lower parts, and an end of the second baffle (34) away from the stirring shaft (5) does not contact the sleeve (13).

8. A mixing device for producing a foam fire extinguisher according to claim 3, It is characterized in that The auxiliary stirring assembly comprises: A rotating shaft (31), the bottom end of which is rotatably connected to the transverse air pipe (29), and the other end of which passes through the sleeve (13) and extends to the outside of the sleeve (13), and the rotating shaft (31) and the sleeve (13) are in sealed rotatable connection; An auxiliary stirring blade (11) fixedly disposed on the outer end of the rotating shaft (31); The fan blade (33) is fixedly arranged at the lower part of the rotating shaft (31) and is located inside the sleeve (13) and outside the transverse air pipe (29).

9. A mixing device for producing a foam fire extinguisher according to claim 1, It is characterized in that The cooling cylinder (3) is fixedly arranged on the periphery of the tank body (1), a spiral circulating water channel (15) is provided inside the cooling cylinder (3), a circulating outlet pipe (8) is fixedly arranged on the upper part of the cooling cylinder (3), and a circulating inlet pipe (7) is fixedly arranged on the lower part, and the circulating outlet pipe (8) and the circulating inlet pipe (7) are both connected to the circulating water channel (15).

10. A method for using a mixing device for producing a foam fire extinguisher, the method using the mixing device for producing a foam fire extinguisher as claimed in claim 1 to mix raw materials, It is characterized in that The steps include: S1: After the raw materials are fed into the tank (1), they are stirred and mixed using a stirring component; S2: As the stirring and mixing process proceeds, the temperature inside the tank body (1) increases, and the air pressure inside the tank body (1) also increases accordingly, and the cooling cylinder (3) is used to perform preliminary cooling; S3: When the temperature inside the tank body (1) is too high, the internal pressure will also increase, thereby causing the air cavity component to move, and then the scraper (12) is driven by the pipe component to stick to the inner wall of the tank body (1), so that the raw materials on the inner wall can be scraped off, thereby accelerating the overall heat exchange; S4: If the temperature continues to rise, the internal pressure of the tank (1) will increase, thereby controlling the valve assembly to open, allowing the medium to flow into the medium flow channel, further reducing the temperature; S5: Complete stirring and mixing, and unload.

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