Foam fire extinguishing material mixing and stirring device
By using a lockable fixing seat and sealing block structure in the foam extinguishing material mixing and stirring device, combined with a reversing valve and regulating components, the problem of air bubbles caused by the pressurization-depressurization cycle was solved, achieving vacuum sealing during the feeding process and improving the stability of the extinguishing material and the quality of the finished product.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-07
- Publication Date
- 2026-04-07
AI Technical Summary
Existing foam fire extinguishing materials suffer from air entering the vessel during the depressurization and mixing process due to the pressurization-depressurization cycle, which forms tiny bubbles and affects the material's stability and fire extinguishing efficiency.
A foam fire extinguishing material mixing and stirring device is designed. It utilizes interlocking fixed seats and sealing blocks to form independent upper and lower chambers. Combined with a reversing valve and regulating components, it can flexibly switch between vacuum and normal pressure states, ensuring the vacuum sealing of the reactor during the feeding process and reducing the generation of bubbles.
It improves the preparation stability and finished product quality of foam fire extinguishing materials, enhances the vacuum sealing of fire extinguishing materials, avoids the generation of bubbles, and improves the stability and reliability of fire extinguishing materials.
Smart Images
Figure CN121797147A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of coal mine fire prevention and extinguishing technology, specifically to a foam fire extinguishing material mixing and stirring device. Background Technology
[0002] In coal mine production, various disasters occur frequently. Among them, mine fires seriously restrict the safe development of my country's coal mines and are a major type of disaster. Against this backdrop, foam fire extinguishing materials have become an effective means of preventing and controlling coal mine fires due to their significant advantages such as good coverage, strong isolation, and economical use of water.
[0003] In the preparation process of this type of foam fire extinguishing material, the vacuum mixing tank is widely used as a key piece of equipment. By creating a vacuum environment, it aims to achieve functions such as low-temperature concentration, efficient degassing, and promotion of specific reactions, so as to ensure the purity and stability of the final product.
[0004] Currently, the synthesis and modification of foam fire extinguishing agents are often carried out in steps. Especially in the laboratory environment used for research and optimization, other raw materials or additives need to be added in batches during the depressurization stirring process. The vacuum needs to be interrupted and then restored to normal pressure to complete the feeding. Then the vacuum is evacuated again. This pressurization-depressurization cycle causes air to enter the vessel with the feeding, resulting in a large number of microbubbles in the fire extinguishing material, affecting the stability of the foam, and ultimately deteriorating the fire extinguishing efficiency and reliability of the finished product. Summary of the Invention
[0005] The purpose of this invention is to provide a foam fire extinguishing material mixing and stirring device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a foam fire extinguishing material mixing and stirring device, comprising a vessel body, wherein an inlet and an outlet are respectively provided on the surface of the vessel body, a stirring assembly for stirring fire extinguishing materials is installed inside the vessel body, and further comprising a fixing seat and a sealing block that can be interlocked with each other, wherein the fixing seat is fixedly connected to the inner wall of the vessel body, and a synchronization hole adapted to the sealing block is opened on the surface of the fixing seat; when the fixing seat and the sealing block are tightly fitted, two independent upper and lower chambers are formed inside the vessel body with the fixing seat as the interval;
[0007] A feeding assembly is disposed at the top of the vessel body. The feeding assembly includes a feeding pipe that passes through the top of the vessel body. The bottom of the feeding pipe passes through the sealing block and is fixedly connected to the fixed seat. A top cover is threaded to the top of the feeding pipe, and a material passage hole is opened on the surface of the feeding pipe.
[0008] The top of the vessel is provided with a main pipe for vacuuming, and also includes an adjustment component for reciprocating the movement of the sealing block on the surface of the feeding pipe.
[0009] Preferably, the adjusting assembly comprises a connecting pipe sleeved on the surface of the feeding pipe, the connecting pipe is fixedly connected with the kettle body, and the connecting pipe is provided with an air cavity, the top of the sealing block is fixedly connected with a movable cylinder, the surface of the movable cylinder is provided with a through hole matched with the feeding hole, the movable cylinder is sealingly and slidably arranged in the air cavity, and the surface of the connecting pipe outside the kettle body is fixedly connected with a secondary pipe, the secondary pipe is connected with the primary pipe through a reversing valve, and the input end of the reversing valve is connected with an external vacuumizing device.
[0010] Preferably, the movable cylinder is connected with the connecting pipe through a tension spring.
[0011] Preferably, a plurality of liquid passing grooves are arranged in the fixed seat, the upper ends of the liquid passing grooves are communicated with the inside of the feeding pipe, the lower ends of the liquid passing grooves are communicated with the inside of the kettle body, a plurality of blocking blocks for blocking the liquid passing grooves are fixedly connected to the bottom of the sealing block, and a plurality of insertion grooves matched with the blocking blocks are arranged on the surface of the fixed seat.
[0012] Preferably, a screen is fixedly connected to the inner wall of the feeding pipe.
[0013] Preferably, a plurality of guide plates are fixedly connected to the surface of the sealing block.
[0014] Preferably, the stirring assembly comprises a stirring shaft rotatably connected to the bottom of the kettle body, a plurality of stirring blades are fixedly connected to the surface of the stirring shaft, and a driving member for driving the stirring shaft to rotate is arranged.
[0015] Preferably, the driving member comprises a driving motor fixedly connected to the bottom of the kettle body, the bottom of the stirring shaft penetrates through the kettle body and is fixedly connected with a synchronous wheel, and the output end of the driving motor is connected with the synchronous wheel through a synchronous belt.
[0016] Preferably, a plurality of supporting legs are arranged on the bottom of the kettle body.
[0017] Compared with the prior art, the present application has the following beneficial effects:
[0018] By arranging the fixed seat and the sealing block which can be mutually embedded, the bottom of the kettle body is divided into two areas by the fixed seat, the foam extinguishing material at the bottom is still in a vacuum state, the upper part can restore to a normal pressure state, other raw materials can be added, and after the fixed seat and the sealing block are separated again, the raw materials can be put into the foam extinguishing material at the bottom through the synchronous hole, the vacuum sealing property of the extinguishing material during the feeding process is improved, the generation of bubbles is reduced, and the preparation stability of the extinguishing material is improved.
[0019] The application sets the reversing valve, and adjusts the close sealing state of the sealing block and the fixed seat by vacuumizing or recovering the air pressure in the main pipe and the auxiliary pipe, and forms the vacuum or normal air pressure state, so as to facilitate the normal feeding without interfering with the vacuum sealing state of the extinguishing material at the bottom of the fixed seat. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is the schematic diagram of the whole structure of the application;
[0021] Figure 2 It is the sectional view of the application for showing the internal structure of the kettle body;
[0022] Figure 3 It is the schematic diagram of the application for showing the state after the sealing block and the fixed seat are embedded;
[0023] Figure 4 It is the schematic diagram of the application for showing the state after the sealing block and the fixed seat are separated.
[0024] In the figure: 1, kettle body; 11, supporting leg; 12, feeding port; 13, discharging port; 2, stirring shaft; 21, stirring blade; 22, driving motor; 221, synchronous belt; 222, synchronous wheel; 3, fixed seat; 31, synchronous hole; 311, liquid passage; 32, sealing block; 321, movable cylinder; 322, through hole; 323, stop block; 324, guide plate; 33, connecting pipe; 331, air cavity; 332, tension spring; 34, feeding pipe; 341, top cover; 342, screen; 4, reversing valve; 41, main pipe; 42, auxiliary pipe. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.
[0026] The application discloses a kind of foamed extinguishing material mixing and stirring devices, as shown in Figures 1-4As shown, including kettle body 1, kettle body 1 surface is respectively provided with feed inlet 12 and discharge outlet 13, feed inlet 12 is used for adding raw materials of foam extinguishing material, when adding from feed inlet 12, the kettle body 1 is not in the state of vacuumizing, but adding needs to be stirred and then vacuumizing, the discharge outlet 13 is used for discharging the extinguishing material after the mixing of stirring is completed, the valve of feed inlet 12 and discharge outlet 13 is sealed, the sealing property is guaranteed, the kettle body 1 is installed with stirring assembly for stirring extinguishing material, further including fixed seat 3 and sealing block 32 which can be mutually embedded, the two can form sealing after being tightly embedded, the fixed seat 3 is fixedly connected to the inner wall of kettle body 1, the surface of fixed seat 3 is provided with synchronous hole 31 matched with sealing block 32, when the fixed seat 3 and sealing block 32 are tightly adhered, the kettle body 1 is divided into two independent chambers by fixed seat 3, and in the conventional state, the fixed seat 3 and the sealing block 32 are not in contact, and the two are separated, at this time, the kettle body 1 is an integral environment, and the whole is vacuumized when vacuumizing.
[0027] The feeding assembly is arranged on the top of the kettle body 1, the feeding assembly includes a feeding pipe 34 arranged on the top of the kettle body 1, the feeding pipe 34 is a hollow pipe, and the raw materials to be added in batches can be added through the center of the feeding pipe 34, the bottom of the feeding pipe 34 penetrates the sealing block 32 and is fixedly connected with the fixed seat 3, the sealing block 32 is limited to slide on the surface of the feeding pipe 34, the top of the feeding pipe 34 is threadedly connected with a top cover 341, a sealing gasket is arranged at the threaded connection position of the top cover 341 and the feeding pipe 34 to ensure the sealing effect, the surface of the feeding pipe 34 is provided with a material passing hole, the raw materials can fall out of the feeding pipe 34 through the material passing hole and fall on the surface of the sealing block 32, and then fall into the edge position of the fixed seat 3, and after the sealing block 32 and the fixed seat 3 are separated, the materials fall into the extinguishing material at the bottom through the synchronous hole 31 for feeding, the top of the kettle body 1 is provided with a main pipe 41 for vacuumizing, the main pipe 41 is connected with an external vacuumizing device such as a vacuum pump, after the vacuum pump extracts the air in the kettle body 1 through the main pipe 41, a vacuum environment is formed in the kettle body 1, it should be noted that the main pipe 41 is arranged on the top of the kettle body 1, and the feed inlet 12 is arranged below the fixed seat 3, further including an adjusting assembly for reciprocating the sealing block 32 on the surface of the feeding pipe 34.
[0028] Specifically, when other raw materials need to be added in batches during the mixing process of the extinguishing material, the sealing block 32 is moved down on the surface of the feeding pipe 34 by adjusting the component and fitted into the surface of the fixed seat 3, blocking the synchronization hole 31 and forming two independent chambers, upper and lower, separated by the fixed seat 3. Then, the air pressure environment of the upper chamber of the fixed seat 3 is restored by the main pipe 41. Since the synchronization hole 31 is blocked, the lower chamber of the fixed seat 3 is still in a vacuum environment and is continuously stirred by the mixing component. After the upper chamber of the fixed seat 3 returns to a stable environment equivalent to the external air pressure, the top cover 341 is unscrewed to add the material. Add the required raw material into pipe 34, and then tighten the top cover 341. During this process, the raw material falls out through the material passage and rolls off the arc-shaped surface of the sealing block 32, distributing itself around the perimeter of the fixing seat 3. After the top cover 341 is sealed, continue to evacuate the upper chamber of the fixing seat 3 through the main pipe 41, and move the sealing block 32 upward by adjusting the component. This allows the raw material to fall evenly into the extinguishing material at the bottom through several synchronous holes 31, completing the feeding process. During the feeding process, the extinguishing material can be kept in a vacuum state to avoid increasing air bubbles and affecting the quality of the finished product.
[0029] The regulating assembly includes a connecting pipe 33 sleeved on the surface of the feeding pipe 34, the connecting pipe 33 being fixedly connected to the feeding pipe 34, the connecting pipe 33 being fixedly connected to the vessel body 1, and the connection between the connecting pipe 33 and the vessel body 1 being sealed. An air chamber 331 is provided inside the connecting pipe 33. A movable cylinder 321 is fixedly connected to the top of the sealing block 32. A through hole 322 adapted to the material passage hole is provided on the surface of the movable cylinder 321, which facilitates the material to enter the surface of the sealing block 32 through the material passage hole and the through hole 322. The movable cylinder 321 slides in a sealed manner within the air chamber 331. A secondary pipe 42 is fixedly connected to the surface of the connecting pipe 33 outside the vessel body 1. The secondary pipe 42 is connected to the main pipe 41 via a reversing valve 4. The two output ends of the reversing valve 4 are fixedly connected to the main pipe 41 and the secondary pipe 42, respectively. The input end of the reversing valve 4 is connected to an external vacuum device.
[0030] Specifically, by adding the reversing valve 4, when feeding is required, the reversing valve 4 is first switched to the secondary pipe 42 and a certain air pressure is applied. By increasing the air pressure, the movable cylinder 321 in the air chamber 331 is pressed downward, and then the movable cylinder 321 drives the sealing block 32 to move downward until it is engaged with the fixed seat 3. Then, the reversing valve 4 is switched to the main pipe 41, which can pressurize the upper chamber of the fixed seat 3 in the vessel body 1. During the pressurization process, affected by the air pressure difference, the sealing block 32 will be further pressed tightly against the surface of the fixed seat 3, forming a tighter seal. After feeding is completed, the circumferential valve is first switched to the main pipe 41 to depressurize, and then switched to the secondary pipe 42 to depressurize. The air pressure in the air chamber 331 decreases, which will drive the movable cylinder 321 to move upward synchronously, thereby separating the sealing block 32 from the fixed seat 3, which facilitates the passage of raw materials.
[0031] Furthermore, the movable cylinder 321 is connected to the connecting pipe 33 via a tension spring 332. The tension spring 332 can be stretched when the movable cylinder 321 moves downward, and then pulls the movable cylinder 321 back to its original position in time through its own elastic deformation.
[0032] The fixed base 3 has several liquid passage channels 311. The upper end of the liquid passage channel 311 is connected to the inside of the feeding pipe 34, and the lower end of the liquid passage channel 311 is connected to the inside of the vessel body 1. The bottom of the sealing block 32 is fixedly connected with several baffles 323 for blocking the liquid passage channels 311. The surface of the fixed base 3 has several slots that are adapted to the baffles 323. When the baffles 323 are inserted into the slots and blocked into the liquid passage channels 311, the sealing block 32 is tightly attached to the fixed base 3. The inner wall of the feeding pipe 34 is fixedly connected with a screen 342. The diameter of the screen 342 is selected according to the particle size of different solid raw materials. The diameter of the screen 342 should be smaller than the particle size of the solid raw materials so that the solid raw materials cannot pass through, while the liquid raw materials can directly pass through the screen 342 and enter the liquid passage channel 311 downwards.
[0033] Specifically, by adding different types of raw materials, solid particles are sieved through screen 342 and roll onto the surface of sealing block 32 through the feed hole and through hole 322. Then, when sealing block 32 separates from fixed seat 3, it falls through synchronization hole 31. Liquid raw materials pass through the sieve holes on the surface of screen 342 and fall vertically to the bottom of feed pipe 34, entering liquid channel 311. Because sealing block 32 is tightly fitted with synchronization hole 31, stop block 323 blocks liquid channel 311. This ensures the independence of the upper and lower chambers of the fixed base 3 and the stability of the vacuum environment in the bottom chamber. When both the upper and lower chambers are restored to a vacuum state, the separation of the sealing block 32 from the fixed base 3 will cause the baffle block 323 to detach from the liquid passage 311 and open the space of the liquid passage 311, allowing the liquid raw material to pass through the liquid passage 311 and fall into the fire extinguishing material at the bottom for stirring. By setting the liquid passage 311, solid raw materials and liquid raw materials are added separately, ensuring the isolation of the raw materials before addition.
[0034] The sealing block 32 has several guide plates 324 fixedly connected to its surface. The guide plates 324 are used to divert the raw material so that it is spread out more evenly. This way, the raw material can fall more evenly into the fire extinguishing material at the bottom when it falls, improving the mixing uniformity and mixing efficiency.
[0035] The stirring assembly includes a stirring shaft 2 rotatably connected to the bottom of the vessel body 1, a plurality of stirring blades 21 fixedly connected to the surface of the stirring shaft 2, and a driving component for driving the stirring shaft 2 to rotate.
[0036] The driving component includes a drive motor 22 fixedly connected to the bottom of the vessel body 1. The bottom of the stirring shaft 2 passes through the vessel body 1, and the passage between the stirring shaft 2 and the vessel body 1 is sealed. A synchronous pulley 222 is fixedly connected thereto. The output end of the drive motor 22 is connected to the synchronous pulley 222 via a synchronous belt 221.
[0037] Specifically, the output of the drive motor 22 is driven by the synchronous belt 221 to rotate the synchronous pulley 222, which in turn drives the stirring shaft 2 to rotate, so that the stirring shaft 2 drives the stirring blade 21 to stir the fire extinguishing material.
[0038] The bottom of the vessel body 1 is equipped with several support legs 11, which support the vessel body 1.
[0039] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A foam fire extinguishing material mixing and stirring device, comprising a vessel body (1), wherein an inlet (12) and an outlet (13) are respectively provided on the surface of the vessel body (1), and a stirring assembly for stirring fire extinguishing materials is installed inside the vessel body (1), characterized in that, It also includes a fixed seat (3) and a sealing block (32) that can be fitted together. The fixed seat (3) is fixedly connected to the inner wall of the vessel body (1). The surface of the fixed seat (3) is provided with a synchronization hole (31) that is adapted to the sealing block (32). When the fixed seat (3) and the sealing block (32) are tightly fitted together, two independent chambers are formed in the vessel body (1) with the fixed seat (3) as the interval. A feeding assembly is provided at the top of the vessel body (1). The feeding assembly includes a feeding pipe (34) that passes through the top of the vessel body (1). The bottom of the feeding pipe (34) passes through the sealing block (32) and is fixedly connected to the fixing seat (3). A top cover (341) is threaded to the top of the feeding pipe (34). A material passage hole is provided on the surface of the feeding pipe (34). The top of the vessel body (1) is provided with a main pipe (41) for vacuuming, and also includes an adjustment component for reciprocating the movement of the sealing block (32) on the surface of the feeding pipe (34).
2. The foam fire extinguishing material mixing and stirring device according to claim 1, characterized in that: The regulating component includes a connecting pipe (33) sleeved on the surface of the feeding pipe (34), the connecting pipe (33) being fixedly connected to the vessel body (1), and an air chamber (331) being opened inside the connecting pipe (33). A movable cylinder (321) is fixedly connected to the top of the sealing block (32), and a through hole (322) adapted to the feeding hole is opened on the surface of the movable cylinder (321). The movable cylinder (321) slides in the air chamber (331) in a sealed manner. A secondary pipe (42) is fixedly connected to the surface of the connecting pipe (33) outside the vessel body (1). The secondary pipe (42) is connected to the main pipe (41) through a reversing valve (4). The input end of the reversing valve (4) is connected to an external vacuum device.
3. The foam fire extinguishing material mixing and stirring device according to claim 2, characterized in that: The movable cylinder (321) is connected to the connecting pipe (33) via a tension spring (332).
4. The foam fire extinguishing material mixing and stirring device according to claim 1, characterized in that: The fixed base (3) has several liquid passage grooves (311) inside. The upper end of the liquid passage groove (311) is connected to the inside of the feeding pipe (34), and the lower end of the liquid passage groove (311) is connected to the inside of the vessel body (1). The bottom of the sealing block (32) is fixedly connected with several baffles (323) for blocking the liquid passage grooves (311). The surface of the fixed base (3) has several slots that are adapted to the baffles (323).
5. The foam fire extinguishing material mixing and stirring device according to claim 1, characterized in that: A screen (342) is fixedly connected to the inner wall of the feeding pipe (34).
6. The foam fire extinguishing material mixing and stirring device according to claim 1, characterized in that: Several guide plates (324) are fixedly connected to the surface of the sealing block (32).
7. The foam fire extinguishing material mixing and stirring device according to claim 1, characterized in that: The stirring assembly includes a stirring shaft (2) rotatably connected to the bottom of the vessel body (1), a plurality of stirring blades (21) fixedly connected to the surface of the stirring shaft (2), and a driving component for driving the stirring shaft (2) to rotate.
8. A foam fire extinguishing material mixing and stirring device according to claim 7, characterized in that: The driving component includes a drive motor (22) fixedly connected to the bottom of the vessel body (1), the bottom of the stirring shaft (2) passes through the vessel body (1) and is fixedly connected to a synchronous pulley (222), and the output end of the drive motor (22) is connected to the synchronous pulley (222) through a synchronous belt (221).
9. A foam fire extinguishing material mixing and stirring device according to claim 1, characterized in that: The bottom of the vessel body (1) is equipped with several support legs (11).