Gas-driven foam conveying and transferring device

Abstract

The utility model is applicable to the technical field of fire-fighting equipment, and provides a gas-driven foam conveying device which comprises a gas cylinder arranged in a box body, a pressure reducing valve is assembled at the opening of the gas cylinder, and a high-pressure hose is fixedly mounted at the gas outlet end of the pressure reducing valve; the medium-pressure meter is assembled at the air outlet end of the high-pressure hose; a metal pipe which can be inserted into a fire-fighting foam barrel to convey flat foam is assembled at the air outlet end of the medium-pressure meter, an air inlet channel and a discharging channel are arranged in the metal pipe, and the air inlet channel is communicated with the air outlet end of the medium-pressure meter and used for supplying air; the conveying hose is arranged on the metal pipe, and one end of the conveying hose is communicated with an outlet of the discharging channel; and the limiting mechanism is arranged on the box body and is used for limiting the gas cylinder. The gas-driven foam conveying and transferring device provided by the scheme solves the problems that foam liquid supply in a fire fighting rescue site at present excessively depends on manual carrying, and the operation process is tedious and time-consuming.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection equipment technology, and in particular relates to a gas-driven foam transfer device. Background Technology

[0002] At fire and rescue sites, foam liquid is used to extinguish some small fires, but due to its relatively inconvenient use, transportation has always been a key factor affecting operational efficiency.

[0003] Currently, foam liquid supply relies heavily on manual handling. Soldiers have to expend a lot of physical strength to carry heavy foam barrels to designated locations before filling them. The process is cumbersome and time-consuming. Especially in real-world firefighting situations where every second counts, this inefficient manual handling and filling method not only greatly depletes the physical strength of the squadron's soldiers but also easily delays the operation, making it impossible to implement timely and effective foam supply, which seriously hinders firefighting and rescue work. Utility Model Content

[0004] This invention provides a gas-driven foam transfer device, which aims to solve the problem that the supply of foam liquid at fire extinguishing and rescue sites currently relies too heavily on manual handling and is cumbersome and time-consuming to operate.

[0005] This utility model is implemented as follows: a gas-driven foam transfer device includes: a gas cylinder housed within a housing, the gas cylinder opening being fitted with a pressure reducing valve, and a high-pressure hose fixedly installed at the outlet end of the pressure reducing valve; a medium-pressure gauge mounted on the outlet end of the high-pressure hose; a metal pipe mounted on the outlet end of the medium-pressure gauge, capable of being inserted into a fire-fighting foam tank to transfer flat foam, the metal pipe having an inlet channel and a outlet channel, the inlet channel being connected to the outlet end of the medium-pressure gauge for supplying gas; a delivery hose mounted on the metal pipe, one end of the delivery hose being connected to the outlet of the outlet channel; and a limiting mechanism mounted on the housing for limiting the movement of the gas cylinder.

[0006] Preferably, the limiting mechanism includes: an arc-shaped plate and a clamping block symmetrically arranged inside the box; a mounting bracket fixedly installed on the outer wall of the box; a slide rod slidably installed on the mounting bracket, one end of the slide rod penetrating into the box and fixedly connected to the clamping block; and a spring sleeved on the slide rod.

[0007] Preferably, the box body is hinged with a lifting frame for personnel to grip and lift, and the lifting frame is fitted with a grip sleeve.

[0008] Preferably, the housing is provided with a placement chamber for placing the gas cylinder and a storage chamber for storing the metal pipe and delivery hose.

[0009] Preferably, the delivery hose is provided with a detachable Velcro strap for binding.

[0010] Preferably, both the arc-shaped plate and the clamping block are provided with rubber pads for anti-slip purposes.

[0011] Preferably, the bottom of the box is symmetrically fixed with support blocks, and the bottom of the support blocks is provided with anti-slip pads.

[0012] Compared with related technologies, the gas-driven foam transfer device provided by this utility model has the following advantages:

[0013] Beneficial effects:

[0014] Using gas cylinders as the gas supply source, combined with a pressure reducing valve, provides stable power for foam liquid transportation, meeting the needs of rapid response at fire scenes, while also adapting to the overall design of the device to avoid excessive weight. High-pressure hoses ensure gas transmission; their pressure resistance, suitable diameter, sufficient length, and weight guarantee stable gas supply and flexible deployment even in complex environments. Medium-pressure gauges provide accurate displays to assist operators in real-time monitoring of gas pressure, ensuring foam liquid is delivered at the predetermined pressure. The combination of rigid and flexible metal pipes and delivery hoses enables stable and precise delivery of foam liquid from barrels to tanks, adapting to complex paths. In the limiting mechanism, arc-shaped plates and clamps secure the gas cylinder at multiple angles, preventing swaying and displacement, and protecting the gas supply line. The mounting bracket provides support for the sliding rod, ensuring stable operation of the limiting components. The sliding rod connects the inner and outer parts, facilitating cylinder installation and clamping adjustment. Springs provide automatic clamping, ensuring cylinder fixation at all times and improving the device's stability in complex and dangerous fire scenes. The hinged design of the carrying rack facilitates device handling; it is foldable and space-saving, adapting to different handling scenarios and improving mobility. The grip sleeve's anti-slip material optimizes the handheld experience and prevents slippage during handling. Support blocks and anti-slip pads at the bottom of the housing provide elevation protection and stability, adapting to various ground conditions. The storage compartment organizes pipelines for easy access. Velcro straps secure the delivery hose, preventing tangling and swaying. Attached Figure Description

[0015] Figure 1 A schematic diagram of the main structure of a gas-driven foam transfer device provided by this utility model;

[0016] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0017] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure;

[0018] Figure 4 This is a schematic diagram of the clamping block in this utility model.

[0019] Attached reference numerals: 1. Gas cylinder; 2. Pressure reducing valve; 3. High-pressure hose; 4. Medium-pressure gauge; 5. Metal pipe; 6. Delivery hose; 7. Velcro cable tie; 8. Box body; 9. Placement chamber; 10. Storage chamber; 11. Lifting rack; 12. Grip sleeve; 13. Curved plate; 14. Clamping block; 15. Mounting bracket; 16. Slide rod; 17. Spring. Detailed Implementation

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] This utility model provides a gas-driven foam transfer device, such as... Figure 1-4 As shown, the gas-driven foam transfer device includes: a gas cylinder 1 housed within a housing 8, with a pressure reducing valve 2 fitted at the cylinder opening and a high-pressure hose 3 fixedly installed at the outlet of the pressure reducing valve 2; a medium-pressure gauge 4 mounted on the outlet of the high-pressure hose 3; a metal pipe 5 mounted on the outlet of the medium-pressure gauge 4, which can be inserted into a fire-fighting foam tank to transfer flat foam, the metal pipe 5 having an air inlet channel and a discharge channel, the air inlet channel being connected to the outlet of the medium-pressure gauge 4 for supplying air; a conveying hose 6 mounted on the metal pipe 5, one end of the conveying hose 6 being connected to the outlet of the discharge channel; and a limiting mechanism mounted on the housing 8 for limiting the movement of the gas cylinder 1.

[0023] In this embodiment, gas cylinder 1 serves as the gas source for the entire device, pre-storing high-pressure air to provide the power foundation for the subsequent transfer of foam liquid. For example, at a fire scene, the high-pressure gas in cylinder 1 is always ready. Once an instruction is received, the foam liquid delivery process can be quickly initiated, eliminating the need to wait for manual handling of foam containers before slowly preparing for filling, as is the case in traditional methods. Its 3L volume is carefully designed to meet the foam liquid transfer requirements for a certain period without making the device too bulky. The pressure reducing valve 2, mounted at the mouth of gas cylinder 1, plays a crucial role. It can precisely regulate the pressure of the high-pressure gas output from gas cylinder 1, ensuring a stable and suitable gas pressure entering the subsequent pipelines. In the complex and ever-changing environment of a fire, different foam liquid viscosities and transfer distances may cause differences in gas pressure requirements. Pressure reducing valve 2 can adjust the high-pressure gas to a suitable pressure according to the actual situation, ensuring the safe and stable operation of the entire transfer process, avoiding pipeline rupture or uncontrolled foam liquid spraying due to excessive gas pressure, and also preventing the foam liquid from flowing ineffectively due to insufficient gas pressure. The high-pressure hose 3 is made of steel wire wound rubber tubing, which gives it good pressure resistance and is sufficient to withstand the impact of high-pressure gas output from gas cylinder 1, ensuring that the gas does not leak during transmission and maintaining the continuity of gas supply. For example, when gas cylinder 1 releases high-pressure gas instantaneously, the high-pressure hose 3, with its pressure-resistant characteristics, can stably deliver the gas to the next stage; its diameter is ≤18mm, ensuring efficient gas transmission while meeting the requirements of the compact structure of the entire device, facilitating reasonable layout within the housing 8 without occupying too much space, and also making it convenient for flexible laying in the confined and complex environment of the fire scene; its weight is ≥1.30kg and its length is ≥5m, providing sufficient weight to ensure stable laying in complex environments and preventing it from being easily pulled or displaced; while its longer length meets the layout requirements of different scenarios, ensuring smooth connection between foam buckets and foam tanks that are close together, or in situations where detours are needed due to obstacles on site, thus achieving smooth transfer of foam liquid; the medium pressure gauge 4 uses a pointer pressure gauge as the display method, allowing operators to intuitively and clearly read the gas pressure value at a glance in the tense fire scene. This is crucial for real-time monitoring of air pressure changes during the transfer process. For example, when abnormal fluctuations in the pointer are detected, it is possible to quickly determine whether the problem is with the air supply from cylinder 1, the adjustment of pressure reducing valve 2, or blockage in subsequent pipelines, and take appropriate measures in a timely manner. The nominal diameter of the outer shell is in the range of 50-51mm. This size design is reasonable, which is convenient for installation in key parts of the device, such as between the outlet of the high-pressure hose 3 and the air inlet of the metal pipe 5, without occupying too much valuable space, ensuring that the entire device is compact and easy to operate. The weight is ≤0.5kg, which reduces the overall load of the device. At the fire scene, every bit of weight reduction means improved convenience for officers and soldiers to carry and operate.Meanwhile, its accuracy level reaches 40μm, accurately reflecting minute changes in air pressure within an operating temperature range of 5-60℃. Regardless of changes in fire temperature, it ensures precise air pressure control, guaranteeing stable delivery of foam liquid at the predetermined pressure. The metal tube 5 can be inserted into the fire-fighting foam tank, which has an air inlet channel and a discharge channel. The air inlet channel is connected to the outlet of the medium pressure gauge 4 for air supply. When high-pressure gas enters the foam tank through the air inlet channel, it quickly squeezes the foam liquid in the tank to the discharge channel based on the principle of pressure. The metal material ensures the strength of the tube body, making it resistant to deformation and damage under harsh conditions such as insertion into the foam tank, impact from foam liquid, and high temperatures in the fire scene, ensuring the stability of air and liquid supply. One end of the delivery hose 6 is connected to the outlet of the discharge channel of the metal tube 5, which is responsible for further transporting the foam liquid discharged from the metal tube 5 to the designated foam tank. The delivery hose 6 possesses a certain degree of flexibility, enabling it to adapt to potentially complex paths between the foam bucket and the foam tank, easily bypassing obstacles to ensure accurate delivery of the foam liquid. This prevents blockages or leaks caused by pipe bends, ensuring smooth firefighting operations. The limiting mechanism firmly secures the gas cylinder 1 within the housing 8, preventing loosening or detachment of the connecting pipes due to cylinder 1's movement, which could lead to gas leaks or supply interruptions. This design significantly improves the stability and reliability of the device in complex and hazardous fire environments, ensuring uninterrupted foam liquid transfer and providing continuous and efficient support for firefighting and rescue operations. In summary, the components of this gas-driven foam transfer device work collaboratively, replacing traditional manual handling and filling with gas-driven operation, greatly reducing manual labor and saving time. Furthermore, its precise and reliable design provides an efficient and convenient foam liquid transfer solution for firefighting operations, and it is expected to be widely applied and promoted in the firefighting field.

[0024] In a further preferred embodiment of the present invention, the limiting mechanism includes: an arc-shaped plate 13 and a clamping block 14 symmetrically arranged inside the housing 8; a mounting bracket 15 fixedly installed on the outer wall of the housing 8; a sliding rod 16 slidably installed on the mounting bracket 15, one end of the sliding rod 16 penetrating into the housing 8 and fixedly connected to the clamping block 14; and a spring 17 sleeved on the sliding rod 16.

[0025] In this embodiment, the arc-shaped plate 13 is symmetrically arranged inside the housing 8, and its curvature closely matches the outer contour of the gas cylinder 1, providing stable support from both sides of the gas cylinder 1 and effectively limiting the lateral swaying of the gas cylinder 1. For example, in the event of sudden situations such as vehicle bumps or personnel collisions with the housing at the fire scene, the arc-shaped plate 13 can firmly hold the gas cylinder 1 in place by its fitting curvature, preventing it from being pulled by the connected pressure reducing valve 2, high-pressure hose 3, and other components due to lateral displacement, thus ensuring the integrity of the gas supply line. The clamping block 14 works in conjunction with the arc-shaped plate 13 to apply clamping force from the other side of the gas cylinder 1. When the gas cylinder 1 tends to jump upward or move back and forth due to vibration, the clamping block 14 can promptly prevent such displacement, further strengthening the fixing effect on the gas cylinder 1. It forms a multi-angle constraint with the arc-shaped plate 13, making the gas cylinder 1 seem to be firmly "held" inside the housing 8, greatly enhancing the stability of the device in complex dynamic environments. The mounting bracket 15 is fixedly installed on the outer wall of the housing 8, providing a stable mounting base for the sliding rod 16. Its structural strength is carefully designed to withstand the frictional force during the sliding of the slide rod 16 and the elastic reaction force of the spring 17, while ensuring that it does not deform or break under harsh conditions such as high temperature and impact in a fire. For example, at a fire scene, when the surrounding high temperature radiation and flying debris impact the outer wall of the housing 8, the mounting bracket 15, as a supporting component, remains in place to ensure that the slide rod 16 and its associated limiting components can operate normally, providing a solid backing for the limiting function of the gas cylinder 1. One end of the slide rod 16 penetrates into the housing 8 and is fixedly connected to the clamping block 14, playing a key role in connecting the external control components with the internal clamping block 14. The operator can easily adjust the clamping degree of the clamping block 14 on the gas cylinder 1 by pushing and pulling the slide rod 16 from outside the housing 8. When installing the gas cylinder 1, pull the slide rod 16 outward to loosen the clamping block 14, making it easier for the gas cylinder 1 to be placed in the appropriate position between the arc plates 13; after the gas cylinder 1 is in place, release the slide rod 16, and the spring 17 pushes the clamping block 14 to clamp the gas cylinder 1. This design facilitates the assembly and maintenance of the device, and ensures that the gas cylinder 1 is reliably fixed during daily storage or transportation, adapting to different scenario requirements. The spring 17, sleeved on the slide rod 16, is the core component of the entire limiting mechanism to achieve the automatic clamping function. When the slide rod 16 is pulled to release the clamping block 14, the spring 17 stretches and stores elastic potential energy; once the external force is released, the spring 17 quickly retracts due to its own elasticity, causing the clamping block 14 to clamp the gas cylinder 1.At the fire scene, even if the gas cylinder 1 momentarily shifts due to vibration, collision, or other reasons, the clamping force continuously applied by the spring 17 can promptly "pull" the gas cylinder 1 back to its original position, maintaining a tight constraint on the gas cylinder 1 at all times. This effectively prevents the gas cylinder 1 from leaving its fixed position and ensures the stable operation of the gas supply system. In summary, through the coordinated operation of the arc plate 13, clamping block 14, mounting bracket 15, sliding rod 16, and spring 17, the limiting mechanism comprehensively and dynamically ensures the stable limiting of the gas cylinder 1 within the housing 8. This lays a solid foundation for the reliable operation of the gas-driven foam transfer device at the fire extinguishing and rescue site and further enhances the device's ability to cope with complex and harsh environments.

[0026] In a further preferred embodiment of the present invention, a lifting frame 11 for personnel to grip and lift is hinged to the box body 8, and a gripping sleeve 12 is fitted on the lifting frame 11.

[0027] In this embodiment, the hinged carrying frame 11 on the housing 8 provides the operator with a dedicated point of leverage. In everyday equipment transfer scenarios, such as moving the device from a fire truck garage to a fire truck, or when the device needs to be moved short distances at a fire scene according to the development of the fire, the operator can easily apply force by simply flipping the carrying frame 11 from the hinge to a suitable angle. Its hinge design is quite ingenious. When the device does not need to be moved and is in storage or working condition, the carrying frame 11 can be folded up and close to the outer wall of the housing 8 without taking up extra space, avoiding obstruction or accidental damage in complex fire-fighting scenes. Moreover, this design allows the carrying frame 11 to adapt to different handling needs. Whether it is a single person lifting the device with one hand for fine-tuning or two people working together to move it, it can be operated flexibly, greatly improving the mobility of the device; the grip sleeve 12 fitted on the carrying frame 11 further optimizes the operator's hand holding experience. Considering the urgency and chaotic atmosphere at the fire scene, operators may need to move the device quickly and steadily. The grip sleeve 12 is made of non-slip material, so that even if the operator's palms are sweaty, or if there are water stains or foam liquid on them, they can firmly hold the lifting frame 11 to ensure that the device will not slip accidentally.

[0028] In a further preferred embodiment of the present invention, the housing 8 is provided with a placement chamber 9 for placing the gas cylinder 1 and a storage chamber 10 for storing the metal pipe 5 and the delivery hose 6.

[0029] In this embodiment, a specially designed placement chamber 9 is provided on the housing 8, where the gas cylinder 1 is securely placed. The storage chamber 10 is used to store the metal pipe 5 and the delivery hose 6, and its design cleverly solves the problem of messy pipelines. In the non-working state, the metal pipe 5 and the delivery hose 6 can be neatly stored in the storage chamber 10, preventing them from getting tangled or knotted. This not only extends the service life of the pipelines, but also allows operators to quickly and easily find and retrieve the metal pipe 5 and the delivery hose 6 when the device needs to be used.

[0030] In a further preferred embodiment of the present invention, the delivery hose 6 is provided with a detachable Velcro strap 7 for binding.

[0031] In this embodiment, the delivery hose 6 plays a crucial role in transporting foam liquid from the metal pipe 5 to the designated foam tank during device operation. However, due to its flexibility, it is prone to shaking, swaying, and even entanglement with surrounding components when not in operation or during handling. The Velcro strap 7 effectively solves this problem by tightly securing the delivery hose 6. For example, during the transport of the device from a fire truck to a fire scene, the Velcro strap 7 neatly secures the delivery hose 6 to the side of the housing 8 or other suitable locations, preventing disorderly swaying of the delivery hose 6 due to vehicle vibration and bumps. This not only prevents damage to the hose itself due to excessive swaying but also eliminates the risk of collision and entanglement with other components such as the gas cylinder 1 and the metal pipe 5, ensuring the safety and integrity of the entire device during transportation. The detachable design of the Velcro strap 7 further meets the rapidly changing needs of fire and rescue scenes. When a fire occurs and the equipment needs to be activated quickly to transfer foam liquid, the operator only needs to gently tear the Velcro strap 7 to quickly release the delivery hose 6. The whole process is simple and quick.

[0032] In a further preferred embodiment of this utility model, both the arc plate 13 and the clamping block 14 are provided with rubber pads for anti-slip purposes.

[0033] In this embodiment, the arc-shaped plate 13 itself bears the important responsibility of supporting the gas cylinder 1 from both sides and limiting its left and right swaying. The rubber pad provided on it further optimizes this function. The rubber pad has a large coefficient of friction. When the gas cylinder 1 is placed between the arc-shaped plates 13, the rubber pad can fit tightly against the outer wall of the gas cylinder 1, greatly increasing the friction.

[0034] In a further preferred embodiment of this utility model, the bottom of the box 8 is symmetrically fixedly equipped with support blocks, and the bottom of the support blocks is provided with anti-slip pads.

[0035] In this embodiment, the support blocks are symmetrically installed at the bottom of the box 8, which firstly raises the box 8 so that it is kept at a certain distance from the placement plane.

[0036] In summary, using gas cylinder 1 as the gas supply source, combined with pressure reducing valve 2, provides stable power for foam liquid transportation, meeting the needs of rapid response at fire scenes, while also fitting the overall design of the device to avoid excessive weight. High-pressure hose 3 ensures gas transmission; its pressure resistance, suitable diameter, sufficient length, and weight guarantee stable gas supply and flexible layout even in complex environments. Medium-pressure gauge 4 provides accurate display to assist operators in real-time monitoring of gas pressure, ensuring the foam liquid is delivered at the predetermined pressure. The metal pipe 5 and the delivery hose 6 work together, one rigid and one flexible, to achieve stable and precise delivery of foam liquid from the barrel to the tank, adapting to complex paths. In the limiting mechanism, the arc plate 13 and the clamping block 14 fix the gas cylinder 1 at multiple angles to prevent it from shaking and shifting, protecting the gas supply line. The mounting bracket 15 provides support for the slide rod 16 to ensure the stable operation of the limiting components. The slide rod 16 connects the inside and outside, facilitating the installation of the gas cylinder and adjustment of the clamping degree. The spring 17 achieves automatic clamping, ensuring the gas cylinder 1 is fixed at all times, improving the stability of the device in complex and dangerous fire scenes. The lifting frame 11 has a hinged design for easy device handling, is foldable and does not take up space, adapting to different handling scenarios and improving mobility. The grip sleeve 12 has an anti-slip material to optimize the hand-holding experience and prevent slippage during handling. The bottom support block and anti-slip pad of the box 8 provide elevation protection and anti-slip stability, adapting to various ground conditions. The storage compartment 10 organizes the pipelines for easy access. The Velcro strap 7 fixes the delivery hose 6 to prevent swinging and tangling.

[0037] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0038] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A gas-driven foam transfer device, characterized in that, include: A gas cylinder is installed inside the box, and the gas cylinder mouth is equipped with a pressure reducing valve. A high-pressure hose is fixedly installed at the outlet end of the pressure reducing valve. A medium-pressure gauge is mounted on the outlet end of the high-pressure hose; A metal tube that can be inserted into the fire foam tank to transfer flat foam is installed on the outlet end of the medium pressure gauge. The metal tube is provided with an air inlet channel and a material outlet channel. The air inlet channel is connected to the outlet end of the medium pressure gauge for air supply. A conveying hose is installed on the metal pipe, and one end of the conveying hose is connected to the outlet of the discharge channel; A limiting mechanism is installed on the housing to limit the position of the gas cylinder.

2. The gas-driven foam transfer device as described in claim 1, characterized in that, The limiting mechanism includes: The arc-shaped plates and clamping blocks are symmetrically arranged inside the box. A mounting bracket is fixedly installed on the outer wall of the housing. A sliding rod is slidably mounted on the mounting bracket, with one end of the sliding rod penetrating into the housing and fixedly connected to the clamping block; A spring fitted onto the slide rod.

3. The gas-driven foam transfer device as described in claim 1, characterized in that, The box is hinged to a carrying frame for people to grip and lift, and the carrying frame is fitted with a grip sleeve.

4. The gas-driven foam transfer device as described in claim 1, characterized in that, The housing is provided with a storage chamber for placing the gas cylinder and a storage chamber for storing metal pipes and delivery hoses.

5. The gas-driven foam transfer device as described in claim 1, characterized in that, The delivery hose is equipped with removable Velcro straps for securing.

6. The gas-driven foam transfer device as described in claim 2, characterized in that, Both the arc-shaped plate and the clamping block are provided with rubber pads for anti-slip purposes.

7. The gas-driven foam transfer device as described in claim 1, characterized in that, The bottom of the box is symmetrically and fixedly equipped with support blocks, and the bottom of the support blocks is provided with anti-slip pads.

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