Foam liquid input mechanism for foam fire gun

Abstract

The utility model relates to the technical field of foam fire guns, in particular to a foam liquid input mechanism for a foam fire gun. According to the technical scheme, a connecting base is installed at a port of a tank body in a threaded mode, a liquid suction column is installed in the connecting base, a one-way valve is installed at the position, located at the tail end of the liquid suction column, of the connecting base through a spring, a valve element is arranged in the one-way valve, and when negative pressure suction exists at the position of the one-way valve, the valve element is opened; a ventilation valve is arranged on one side of the connecting base, a gulp valve is installed in the ventilation valve, the ventilation valve is communicated with the interior of the connecting base through the gulp valve, a top cover is connected to the connecting base in a clamped mode, and a nozzle is installed on the top cover. According to the foam bottle, standard filling can be achieved, foam can be replaced more quickly, the storage time of foam liquid is prolonged, carrying and transportation are convenient, and meanwhile more labor can be saved due to the waist hanging design.

Description

Technical Field

[0001] The utility model relates to the technical field of foam fire extinguishing guns, in particular to a foam liquid input mechanism for a foam fire extinguishing gun. Background Art

[0002] Foam fire extinguisher is a kind of equipment used for fire extinguishing, usually used to extinguish liquid fire, especially fire of oil or flammable liquid. These fire extinguishers cover and extinguish the fire source by releasing foam fire extinguishing agent. The foam liquid input mechanism of existing foam fire extinguisher is mostly foam bag, which has the following problems in the current market use:

[0003] 1. The foam bag is 20L and is too heavy;

[0004] 2. The foam bag needs to be filled manually on site after use, and the filling time is too long;

[0005] 3. The design of the foam outlet is prone to leakage;

[0006] 4. The unused foam liquid will easily deteriorate if left in the bag;

[0007] 5. The bag is soft and the storage direction cannot be fixed, so it cannot be transported. Utility Model Content

[0008] The utility model provides a foam liquid input mechanism for a foam fire extinguishing gun, which solves the above-mentioned technical problems.

[0009] The utility model solves the above-mentioned technical problems as follows:

[0010] A foam liquid input mechanism for a foam fire extinguishing gun comprises a fixing seat, a tank body, a connecting seat and a top cover, wherein the connecting seat is threadedly mounted on the port of the tank body, a liquid suction column is mounted inside the connecting seat, a one-way valve is mounted on the end of the liquid suction column through a spring, a valve core is arranged inside the one-way valve, when there is negative pressure suction at the one-way valve, the valve core opens, a ventilation valve is arranged on one side of the connecting seat, an air replenishing valve is installed in the ventilation valve, the ventilation valve is connected to the inside of the connecting seat through the air replenishing valve, a top cover is clamped on the connecting seat, and a nozzle is mounted on the top cover.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the connection seat is provided with a groove at the air supply valve to facilitate external gas to enter the connection seat through the air supply valve and the groove.

[0013] The beneficial effects of adopting the above further scheme are:

[0014] External gas balance: By providing a groove at the connector, it helps external gas to enter the connector through the gas supply valve and the groove. This can help maintain the balance of internal and external gas pressures and prevent problems caused by pressure differences. The balance of external gas is essential for the flow of foam liquid and the normal operation of the system.

[0015] Prevent negative pressure: The air supply valve provides a mechanism to prevent negative pressure through the groove. When negative pressure is formed inside the system, the air supply valve allows external gas to enter to prevent too strong suction. This helps prevent the one-way valve from being unable to close and ensures the reliability of the system.

[0016] Maintaining system stability: The addition of external gas helps maintain the stability of the foam liquid input system. This is because the air pressure inside and outside the system is balanced, and the flow and release of the foam liquid can be more controllable, thereby improving the stability of the system under different operating conditions.

[0017] Reduced risk of foam liquid leakage: External gas balance also helps reduce the risk of foam liquid leakage. When the internal gas pressure of the system is unbalanced, it may cause foam liquid to leak uncontrolled. By maintaining the balance of internal and external gases, this risk can be reduced and the safety of the foam liquid input system can be improved.

[0018] Overall, this design optimizes the working conditions of the foam liquid input system, making it more stable and reliable, while reducing the risk of leakage and negative pressure.

[0019] Furthermore, the connection seat is provided with a protrusion, the top cover is provided with a slot, and the connection seat and the top cover are limitedly connected by the protrusion and the slot.

[0020] The beneficial effects of adopting the above further scheme are:

[0021] Stable connection: The limited connection design of the bump and the slot ensures a stable connection between the connector and the top cover. This connection method provides a reliable physical limit to prevent the connector from accidentally loosening or detaching during use. This is critical for the foam liquid input system because the system needs to work reliably in a variety of environments and conditions.

[0022] Easy installation and maintenance: The design of the bumps and slots allows the connection base and the top cover to be easily and accurately aligned, simplifying the installation and maintenance process. This helps improve the efficiency of operators when using and maintaining the system, and reduces problems that may occur due to incorrect installation.

[0023] Preventing misoperation: The bump and slot limit connection design can effectively prevent misoperation. Once the connector and the top cover are properly connected through the bump and slot, it is not easy to accidentally separate due to vibration or other external factors. This helps ensure the stability and reliability of the system at critical moments.

[0024] Improved durability: The durability of the connection components is enhanced due to the strong physical support provided by the bump and slot limit connection. This means that the connector and top cover are more durable in long-term use and can withstand more operating cycles and environmental stresses.

[0025] Suitable for different working conditions: The design of the bump and slot limit connection makes the foam liquid input mechanism suitable for different working conditions, including environments where vibration or shock may exist. This helps ensure that the system can operate reliably in various application scenarios.

[0026] In general, the advantages of the bump and slot limit connection include the firmness of the connection, the ease of operation, the stability of the system and the durability of long-term use.

[0027] Furthermore, a hook is connected to the top cover via bolts, and a fixing seat is welded on one side of the hook.

[0028] The beneficial effects of adopting the above further scheme are:

[0029] Strong connection: The top cover and hook are connected by bolts, and the hook and the fixing base are welded to ensure the firmness of the connection. This design can withstand vibration, impact and other external forces that the system may be subjected to during use, thereby maintaining the reliability of the connection.

[0030] Easy installation and maintenance: The use of bolt connection and welding technology simplifies the assembly and maintenance process. This allows operators to easily install and maintain the connection between the top cover, hook and fixing base, improving the operability of the system.

[0031] Prevent misoperation: Bolt connection provides a clear and reversible connection method, preventing loose connection caused by misoperation. Welding increases the stability of the connection and prevents possible loosening or breakage.

[0032] Improve the stability of the system: Since a fixing seat is welded on one side of the hook, the overall stability of the system is enhanced. This is crucial for the foam liquid input mechanism, because the system needs to maintain a high degree of stability at critical moments such as emergency firefighting.

[0033] Suitable for high-load environments: This connection design is suitable for foam liquid input mechanisms that may experience high-load working conditions. The combination of welding and bolting ensures that the connection can work stably under various pressures.

[0034] In general, by bolting the top cover and the hook and welding the hook and the fixing seat, the strength, stability and durability of the connection can be ensured, thereby improving the reliability and safety of the foam liquid input system.

[0035] Furthermore, the tank body is mounted in a fixing seat by snap-fitting, and the tank body is hung through the fixing seat and a hook for use.

[0036] The beneficial effects of adopting the above further scheme are:

[0037] Stability: The tank is installed in the fixed seat by snapping, and is hung by hooks, providing a stable support structure. This helps to ensure that the tank is not easy to shake or fall off during transportation, handling and use, and improves the stability of the entire foam liquid input mechanism.

[0038] Simplified operation: The snap-on installation and hanging method of the tank makes the entire system easier to use. The operator can easily snap the tank into the fixing seat and hang it with a hook, simplifying the assembly and disassembly process of the system.

[0039] Safety: The stable clip-on and hanging method reduces the risk of accidental movement or falling of the tank during operation, thereby improving the safety of the foam liquid input mechanism. This is especially important to prevent foam liquid leakage and other potential dangerous situations.

[0040] Strong adaptability: This design allows the tank to adapt to different sizes and shapes of fixing bases, and the hanging method also allows the tank to be conveniently hung in the required position. This improves the adaptability and flexibility of the system in different working environments.

[0041] Easy maintenance: The snap-on and hang-on design simplifies the tank maintenance process. When necessary, operators can quickly remove the tank for maintenance or replacement without complicated tools or steps.

[0042] In general, the tank body is mounted in the fixing seat by snap connection and is hung by a hook, which provides a simple and effective structure and increases the stability, safety and usability of the system. This is beneficial to the reliability and practicality of the foam liquid input mechanism.

[0043] Furthermore, a sealing ring is embedded on the liquid-absorbing column, and the sealing ring is used to increase the sealing performance between the liquid-absorbing column and the connecting seat.

[0044] The beneficial effects of adopting the above further scheme are:

[0045] Prevent leakage: The presence of the sealing ring can effectively prevent the foam liquid or other liquid from leaking between the suction column and the connection seat. This is very important for the foam liquid input system, because leakage may cause the system performance to decline or even cause the entire system to fail.

[0046] Improved sealing: The addition of the sealing ring increases the sealing between the connection seat and the liquid suction column. This ensures that the system can maintain an efficient sealing state during normal operation and emergency situations, ensuring that the foam liquid can accurately enter the nozzle when needed instead of leaking elsewhere.

[0047] Prevent external impurities from entering: The sealing ring can not only prevent liquid leakage, but also prevent external air, dust or other impurities from entering the connection seat. This helps to maintain the purity of the system and prevent impurities from affecting the quality and performance of the foam liquid.

[0048] Improved durability: The role of the sealing ring helps to reduce wear and corrosion of the connection parts, thereby improving the durability of the system. This is crucial for the long-term use and maintenance of the system, reducing the loss of parts and extending the life of the system.

[0049] Responding to different environmental conditions: The use of sealing rings makes the foam liquid input system more adaptable and able to work under different environmental conditions, including bad weather, temperature changes and other factors.

[0050] In general, by using sealing rings on the pipette column, the reliability and durability of the system can be improved, leakage problems can be avoided, and the system can be ensured to work efficiently in various environments.

[0051] Furthermore, a liquid suction cavity is provided in the liquid suction column, and under normal conditions, the liquid suction cavity is covered by a connecting seat. When the liquid suction cavity is installed on the connecting seat, the top cover pushes the liquid suction column upward to expose the liquid suction cavity of the liquid suction column from the connecting seat, thereby facilitating the foam in the tank body to enter the nozzle through the liquid suction cavity and be sprayed out.

[0052] The beneficial effects of adopting the above further scheme are:

[0053] Controlling the flow of liquid: The existence of the suction chamber and the covering design of the connection seat can effectively control the flow of liquid. Under normal conditions, the suction chamber is covered by the connection seat to prevent unwanted liquid from flowing into the nozzle. When liquid is needed, the suction column is pushed up by the top cover to expose the suction chamber, which can accurately control the flow direction of the liquid.

[0054] Precise injection: By moving the liquid suction column upward to expose the liquid suction chamber to the connection seat, precise liquid injection can be achieved. This is very important for foam fire extinguishing systems because the nozzle needs to release foam liquid accurately when needed to achieve the fire extinguishing effect.

[0055] Avoid leakage: The connector covers the suction chamber in normal state, which helps prevent the foam liquid from leaking when it is not needed. This improves the safety of the system and ensures that the liquid enters the nozzle only when it is needed.

[0056] Easy to operate: The design of the top cover pushing the liquid absorption column upward makes the operation relatively simple. This helps to quickly start the nozzle in an emergency and improves the response speed of the system.

[0057] System reliability: Through this mechanism of controlling the flow of liquid, the system is more reliable. The movement of the pipette column and the cover design of the connection seat combine to ensure that the system can operate stably under different working conditions.

[0058] Overall, this design optimizes liquid flow control, improves system injection accuracy and reliability, and reduces the risk of leakage.

[0059] The beneficial effects of the utility model are:

[0060] Strong sealing: By setting a sealing ring between the connection seat and the liquid suction column, the high sealing of the connection part is ensured. This is crucial for the foam fire extinguishing system, because poor sealing may cause foam liquid leakage and weaken the fire extinguishing effect. The liquid suction cavity on the liquid suction column is covered by the connection seat in a normal state, preventing unnecessary leakage.

[0061] Easy to operate: The top cover design allows easy control of the movement of the aspiration column. When the foam liquid needs to be released, the top cover pushes the aspiration column upward to expose the aspiration cavity, allowing the foam liquid to enter the nozzle. This mechanism makes the operation more intuitive and flexible.

[0062] One-way valve prevents backflow: The introduction of the one-way valve effectively prevents the possibility of foam liquid backflow. When the system generates negative pressure suction, the valve core opens and the foam liquid can smoothly enter the nozzle, while in other cases the one-way valve is closed to prevent liquid backflow and maintain the stability of the system.

[0063] Balance of ventilation system: The design of the ventilation valve and air supply valve on the connection seat ensures the balance of gas pressure inside and outside the system. This is especially important for foam fire extinguishing systems that are used for a long time or operated in different environments, and can prevent problems caused by gas pressure imbalance in the system, such as leakage or poor operation.

[0064] The connection structure is stable: the connection between the connection seat and the top cover is limited by the bump and the slot, which ensures the firmness of the connection. This design makes the foam liquid input mechanism more durable in use and can withstand certain external shocks and vibrations.

[0065] Multifunctional design improves applicability: The presence of the hook enables the tank to be easily installed and unloaded through the fixing seat and the hook, which increases the applicability and flexibility of the foam liquid input mechanism and facilitates use on different occasions and equipment.

[0066] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0068] In the attached picture:

[0069] Figure 1 This is a schematic diagram of the axial appearance of the utility model;

[0070] Figure 2 This is a schematic diagram of the axial half-section structure of the utility model;

[0071] Figure 3 It is a cross-sectional structural diagram of the air supply valve of the utility model;

[0072] Figure 4 It is a schematic diagram of the connection state of the connecting base and the top cover of the utility model.

[0073] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0074] 1. Nozzle; 2. Ventilation valve; 3. Fixed seat; 4. Tank body; 5. Hook; 6. Valve core; 7. Spring; 8. Connecting seat; 9. Suction column; 10. Sealing ring; 11. Suction chamber; 12. One-way valve; 13. Top cover; 14. Air supply valve. DETAILED DESCRIPTION

[0075] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0076] See also Figures 1 to 4 As shown, the embodiments provided by the utility model:

[0077] Embodiment 1

[0078] A foam liquid input mechanism for a foam fire extinguishing gun includes a fixing seat 3, a tank body 4, a connecting seat 8 and a top cover 13. The port of the tank body 4 is threadedly installed with a connecting seat 8, and a liquid suction column 9 is installed inside the connecting seat 8. A sealing ring 10 is inlaid on the liquid suction column 9. The sealing ring 10 increases the sealing between the liquid suction column 9 and the connecting seat 8. The existence of the sealing ring 10 can effectively prevent the foam liquid or other liquid from leaking between the liquid suction column 9 and the connecting seat 8. This is very important for the foam liquid input system, because leakage may cause the system performance to decline or even make the entire system fail. The addition of the sealing ring 10 increases the sealing between the connecting seat 8 and the liquid suction column 9. This ensures that the system can maintain an efficient sealing state in normal operation and emergency situations, and ensures that the foam liquid can accurately enter the nozzle 1 when needed, rather than leaking elsewhere. The sealing ring 10 can not only prevent liquid leakage, but also prevent external air, dust or other impurities from entering the connecting seat 8. This helps to maintain the purity of the system and prevent impurities from affecting the quality and performance of the foam liquid. The role of the sealing ring 10 helps to reduce the wear and corrosion of the connecting part, thereby improving the durability of the system. This is crucial for the long-term use and maintenance of the system, reducing the loss of parts and extending the life of the system. The use of the sealing ring 10 makes the foam liquid input system more adaptable and can work under different environmental conditions, including factors such as bad weather and temperature changes. In general, by using the sealing ring 10 on the liquid suction column 9, the reliability and durability of the system can be improved, leakage problems can be avoided, and the system can be ensured to work efficiently in various environments. The liquid suction column 9 is provided with a liquid suction cavity 11, and the liquid suction cavity 11 is covered by the connecting seat 8 in a normal state. When the liquid suction cavity 11 is installed on the connecting seat 8, the top cover 13 pushes the liquid suction column 9 to move up, so that the liquid suction cavity 11 of the liquid suction column 9 is exposed from the connecting seat 8, thereby facilitating the foam in the tank body 4 to enter the nozzle 1 through the liquid suction cavity 11 and spray out. Through the existence of the liquid suction cavity 11 and the covering design of the connecting seat 8, the flow of the liquid can be effectively controlled. Under normal conditions, the suction chamber 11 is covered by the connection seat 8 to prevent unwanted liquid from flowing into the nozzle 1. When liquid is needed, the suction column 9 is pushed upward by the top cover 13 to expose the suction chamber 11, and the flow direction of the liquid can be accurately controlled. By moving the suction column 9 upward to expose the connection seat 8, accurate liquid injection can be achieved. This is very important for foam fire extinguishing systems because the nozzle 1 needs to release foam liquid accurately when needed to achieve a fire extinguishing effect. The connection seat 8 covers the suction chamber 11 under normal conditions, which helps prevent the foam liquid from leaking when it is not needed. This improves the safety of the system and ensures that the liquid enters the nozzle 1 only when it is needed. The design of the top cover 13 pushing the suction column 9 upward makes the operation relatively simple. This helps to quickly start the nozzle 1 in an emergency and improves the response speed of the system. Through this mechanism of controlling the flow of liquid, the system is more reliable.The combination of the movement of the liquid suction column 9 and the cover design of the connection seat 8 ensures that the system can operate stably under different working conditions. In general, this design optimizes the flow control of the liquid, improves the injection accuracy and reliability of the system, and reduces the risk of leakage.

[0079] A one-way valve 12 is installed at the end of the connecting seat 8 at the end of the liquid suction column 9 through a spring 7. A valve core 6 is provided inside the one-way valve 12. When there is negative pressure suction at the one-way valve 12, the valve core 6 opens. A ventilation valve 2 is provided on one side of the connecting seat 8. An air supply valve 14 is installed in the ventilation valve 2. The ventilation valve 2 is connected to the interior of the connecting seat 8 through the air supply valve 14.

[0080] The connection seat 8 is provided with a groove at the air supply valve 14, so that the external gas can enter the connection seat 8 through the air supply valve 14 and the groove. By providing the groove at the connection seat 8, it is helpful for the external gas to enter the connection seat 8 through the air supply valve 14 and the groove. This can help maintain the balance of the internal and external gas pressures and prevent problems caused by the difference in air pressure. The balance of external gas is crucial to the flow of foam liquid and the normal operation of the system. The air supply valve 14 provides a mechanism to prevent negative pressure through the groove. When negative pressure is formed inside the system, the air supply valve 14 allows external gas to enter to prevent too strong suction. This helps to prevent the one-way valve 12 from being unable to close and ensure the reliability of the system. The supplement of external gas helps to maintain the stability of the foam liquid input system. This is because the internal and external air pressures of the system are balanced, and the flow and release of the foam liquid can be more controllable, thereby improving the stability of the system under different operating conditions. The balance of external gas also helps to reduce the risk of foam liquid leakage. When the internal air pressure of the system is unbalanced, it may cause the foam liquid to leak uncontrolled. By maintaining the balance of internal and external gases, this risk can be reduced and the safety of the foam liquid input system can be improved. In general, this design optimizes the working conditions of the foam liquid input system, making it more stable and reliable, while reducing the risk of leakage and negative pressure. The top cover 13 is clamped on the connecting seat 8, a protrusion is provided on the connecting seat 8, and a slot is provided on the top cover 13. The connecting seat 8 and the top cover 13 are limitedly connected by the protrusion and the slot, and the limited connection design of the protrusion and the slot ensures a stable connection between the connecting seat 8 and the top cover 13. This connection method provides a reliable physical restriction to prevent the connector from accidentally loosening or detaching during use. This is crucial for the foam liquid input system because the system needs to work reliably in various environments and conditions. The design of the protrusion and the slot allows the connecting seat 8 and the top cover 13 to be easily and accurately aligned, thereby simplifying the installation and maintenance process. This helps to improve the efficiency of operators when using and maintaining the system and reduce problems that may be caused by improper installation. The protrusion and the slot limit connection design can effectively prevent misoperation. Once the connecting seat 8 and the top cover 13 are properly connected through the protrusion and the slot, it is not easy to accidentally separate due to vibration or other external factors. This helps ensure the stability and reliability of the system at critical moments. The durability of the connection components is enhanced because the bump and slot limit connection provides strong physical support. This means that the connection seat 8 and the top cover 13 are more durable in long-term use and can withstand more operating cycles and environmental pressures. The design of the bump and slot limit connection makes the foam liquid input mechanism suitable for different working conditions, including environments where vibration or shock may exist. This helps ensure that the system can operate reliably in a variety of application scenarios.In general, the advantages of the protrusion and the slot limit connection include the firmness of the connection, the simplicity of operation, the stability of the system and the durability of long-term use. The nozzle 1 is installed on the top cover 13, and the hook 5 is connected to the top cover 13 by bolts. The fixing seat 3 is welded on one side of the hook 5. The top cover 13 and the hook 5 are connected by bolts, and the hook 5 is welded with the fixing seat 3 to ensure the firmness of the connection. This design can withstand the vibration, impact and other external forces that the system may be subjected to during use, thereby maintaining the reliability of the connection. The use of bolt connection and welding technology simplifies the assembly and maintenance process. This allows operators to easily install and maintain the connection between the top cover 13, the hook 5 and the fixing seat 3, and improves the operability of the system. The bolt connection provides a clear and reversible connection method to prevent the loose connection caused by misoperation. Welding increases the stability of the connection and prevents possible loosening or breakage. Since the fixing seat 3 is welded on one side of the hook 5, the overall stability of the system is enhanced. This is crucial for the foam liquid input mechanism because the system needs to maintain a high degree of stability at critical moments such as emergency fire fighting. This connection design is suitable for foam liquid input mechanisms that may experience high-load working conditions. The combination of welding and bolting ensures that the connection can work stably under various pressures. In general, by bolting the top cover 13 and the hook 5, and welding the hook 5 and the fixing seat 3, the strength, stability and durability of the connection can be guaranteed, thereby improving the reliability and safety of the foam liquid input system. The tank body 4 is mounted in the fixing seat 3 by snapping, and the tank body 4 is hung and used by the fixing seat 3 and the hook 5. The snap-on installation of the tank body 4 in the fixing seat 3 and the hanging method by the hook 5 provide a stable support structure. This helps to ensure that the tank body 4 is not easy to shake or fall off during transportation, handling and use, thereby improving the stability of the entire foam liquid input mechanism. The snap-on installation and hanging method of the tank body 4 make the entire system easier to use. The operator can easily snap the tank body 4 into the fixing seat 3 and hang it using the hook 5, which simplifies the assembly and disassembly process of the system. Through the stable snap-on and hanging method, the risk of accidental movement or falling off of the tank body 4 during operation is reduced, thereby improving the safety of the foam liquid input mechanism. This is particularly important for preventing foam liquid leakage and other potentially dangerous situations. This design allows the tank body 4 to adapt to different sizes and shapes of the fixing base 3, and the hanging method also allows the tank body 4 to be conveniently hung at the required position. This improves the adaptability and flexibility of the system in different working environments. The snap-on and hanging design simplifies the maintenance process of the tank body 4. When necessary, the operator can quickly remove the tank body 4 for maintenance or replacement without complicated tools or steps. In general, the tank body 4 is installed in the fixing base 3 by snap-on connection and is hung using the hook 5, providing a simple and effective structure that increases the stability, safety and ease of use of the system.This is beneficial to the reliability and practicality of the foam liquid input mechanism.

[0081] A foam liquid input mechanism for a foam fire extinguishing gun based on Example 1 is used:

[0082] Strong sealing: By setting a sealing ring 10 between the connecting seat 8 and the liquid suction column 9, the high sealing of the connecting part is ensured. This is very important for the foam fire extinguishing system, because poor sealing may cause foam liquid leakage and weaken the fire extinguishing effect. The liquid suction cavity 11 on the liquid suction column 9 is covered by the connecting seat 8 in a normal state, preventing unnecessary leakage.

[0083] Easy operation: The top cover 13 can be designed to easily control the movement of the liquid absorption column 9. When the foam liquid needs to be released, the top cover 13 pushes the liquid absorption column 9 upward to expose the liquid absorption cavity 11, thereby allowing the foam liquid to enter the nozzle 1. This mechanism makes the operation more intuitive and flexible.

[0084] The one-way valve 12 prevents backflow: The introduction of the one-way valve 12 effectively prevents the possibility of backflow of the foam liquid. When the system generates negative pressure suction, the valve core 6 opens and the foam liquid can smoothly enter the nozzle 1, while in other cases the one-way valve 12 is closed to prevent the liquid from backflowing and maintain the stability of the system.

[0085] Balance of ventilation system: The design of ventilation valve 2 and air supply valve 14 on the connection seat 8 ensures the balance of gas pressure inside and outside the system. This is especially important for foam fire extinguishing systems that are used for a long time or operated in different environments, and can prevent problems caused by pressure imbalance in the system, such as leakage or poor operation.

[0086] The connection structure is stable: the connection is ensured to be firm by the projection and the slot limit connection between the connection seat 8 and the top cover 13. This design makes the foam liquid input mechanism more durable in use and can withstand certain external shocks and vibrations.

[0087] Multifunctional design improves applicability: the presence of the hook 5 enables the tank body 4 to be conveniently installed and unloaded through the fixing seat 3 and the hook 5, thereby increasing the applicability and flexibility of the foam liquid input mechanism and facilitating its use in different occasions and equipment.

[0088] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A foam liquid input mechanism for a foam fire extinguishing gun, characterized in that: The invention comprises a fixing seat (3), a tank body (4), a connecting seat (8) and a top cover (13); the connecting seat (8) is threadedly mounted on the port of the tank body (4); a liquid suction column (9) is mounted inside the connecting seat (8); a one-way valve (12) is mounted on the connecting seat (8) at the end of the liquid suction column (9) via a spring (7); a valve core (6) is mounted inside the one-way valve (12); when negative pressure suction is applied to the one-way valve (12), the valve core (6) opens; a ventilation valve (2) is mounted on one side of the connecting seat (8); an air supply valve (14) is mounted inside the ventilation valve (2); the ventilation valve (2) is connected to the inside of the connecting seat (8) via the air supply valve (14); a top cover (13) is clamped on the connecting seat (8); and a nozzle (1) is mounted on the top cover (13).

2. A foam liquid input mechanism for a foam fire extinguishing gun according to claim 1, characterized in that: The connection seat (8) is provided with a groove at the gas supply valve (14), so as to facilitate external gas to enter the connection seat (8) through the gas supply valve (14) and the groove.

3. The foam liquid input mechanism for a foam fire extinguishing gun according to claim 1, characterized in that: The connection seat (8) is provided with a protrusion, the top cover (13) is provided with a slot, and the connection seat (8) and the top cover (13) are connected in a limiting manner via the protrusion and the slot.

4. The foam liquid input mechanism for a foam fire extinguishing gun according to claim 1, characterized in that: A hook (5) is connected to the top cover (13) via bolts, and a fixing seat (3) is welded to one side of the hook (5).

5. The foam liquid input mechanism for a foam fire extinguishing gun according to claim 1, characterized in that: The tank body (4) is mounted in a clamping connection in the fixing seat (3), and the tank body (4) is hung through the fixing seat (3) and the hook (5) for use.

6. The foam liquid input mechanism for a foam fire extinguishing gun according to claim 1, characterized in that: The liquid absorption column (9) is inlaid with a sealing ring (10), and the sealing ring (10) increases the sealing performance between the liquid absorption column (9) and the connecting seat (8).

7. The foam liquid input mechanism for a foam fire extinguishing gun according to claim 1, characterized in that: The liquid suction column (9) is provided with a liquid suction chamber (11), and in a normal state, the liquid suction chamber (11) is covered by a connecting seat (8). When the liquid suction chamber (11) is installed on the connecting seat (8), the top cover (13) pushes the liquid suction column (9) to move upward, so that the liquid suction chamber (11) of the liquid suction column (9) is exposed from the connecting seat (8), thereby facilitating the foam in the tank body (4) to enter the nozzle (1) through the liquid suction chamber (11) and be sprayed out.

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