Decontamination liquid preparation mechanism and decontamination robot comprising same

Abstract

The invention discloses a decontamination liquid preparing mechanism and a decontamination robot comprising the same. The decontamination liquid preparing mechanism comprises a carriage, a containing tank, a water supply unit, a liquid supply unit, a gas supply unit, a mixing pipe and a dispersing unit. The containing tank is arranged in the compartment and is divided into a water tank and a foam box; the water supply unit is connected with the water tank and used for providing pressurized clear water according to a preset proportion; the liquid supply unit is connected with the foam box and is used for providing pressurized foaming liquid according to a preset proportion; the gas supply unit is used for providing pressurized gas; the invention belongs to the technical field of decontamination liquid preparation, and achieves the technical effects that by arranging a multi-stage mixing structure, primary liquid-phase mixing of water and foaming liquid is realized in a foam liquid mixing cavity, and then the mixed liquid is sprayed in an accelerated manner through a nozzle; the fluid is severely sheared and collided with multidirectional uniform gas from the annular gas cavity in the gas-liquid mixing cavity, so that the gas-liquid interaction efficiency is greatly improved, and the gas is efficiently segmented and wrapped.

Description

Technical Field

[0001] This invention relates to the field of decontamination solution preparation technology, specifically to a decontamination solution preparation mechanism and a decontamination robot containing the mechanism. Background Technology

[0002] In firefighting, disinfection of epidemic areas, and emergency response to chemical spills, foam decontamination solutions are widely used due to their excellent coverage, strong isolation properties, and water-saving characteristics. High-expansion foam, in particular, can quickly cover large areas, effectively suppressing evaporation, isolating oxygen, and diluting toxic and harmful substances, significantly improving response efficiency and reducing risks to rescue personnel.

[0003] Currently, common foam generating devices are mostly deployed in large fire trucks or fixed pipeline systems. Their core mechanism involves mixing foaming liquid, water, and air in a specific ratio to generate foam through a foaming device. However, existing equipment, especially in mobile emergency scenarios, often faces several prominent challenges: First, the mixing process often relies on single structures such as venturi tubes for injection and mixing, resulting in short gas-liquid contact time and poor mixing uniformity. This leads to inconsistent foam bubble size and insufficient stability, severely affecting coverage and durability. Second, the proportioning control precision is not high. Especially when there are fluctuations in flow rate or pressure changes, the mixing ratio of water and foaming liquid is prone to deviating from the optimal range, causing waste of foaming liquid or a decrease in foaming effect. Third, the system lacks functional integration and operational flexibility, often failing to support the rapid switching and collaborative operation of multiple spray terminals (such as manual spray guns, robotic arm remote-controlled cannons, and ground flushing spray guns), making it difficult to cope with complex and ever-changing on-site task requirements. Therefore, to address the shortcomings of existing requirements, we propose a decontamination solution preparation mechanism and a decontamination robot incorporating this mechanism. Summary of the Invention

[0004] To address these issues, the present invention provides a decontamination solution preparation mechanism and a decontamination robot incorporating the mechanism, thereby resolving the aforementioned problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: According to a first aspect of the present invention, a decontamination liquid preparation mechanism includes a compartment, a container, a water supply unit, a liquid supply unit, a gas supply unit, a mixing pipe, and a dispersion unit; the container is disposed inside the compartment and divided into a water tank and a foam tank; the water supply unit is connected to the water tank and is used to provide pressurized clean water in a predetermined ratio; the liquid supply unit is connected to the foam tank and is used to provide pressurized foaming liquid in a predetermined ratio; the gas supply unit is used to provide pressurized gas; the mixing pipe includes a foam liquid mixing chamber and a gas-liquid mixing chamber connected in sequence, the input end of the foam liquid mixing chamber being connected to... The foam liquid injection port on the side wall of the water supply unit is connected to the liquid supply unit. A nozzle for accelerating the fluid and enhancing the mixing is provided between the foam liquid mixing chamber and the gas-liquid mixing chamber. A gas injection port connected to the gas supply unit is provided on the side wall of the gas-liquid mixing chamber, and an annular gas chamber structure for uniformly injecting gas and enhancing gas-liquid mixing is provided at its end. A foaming net for generating uniform fine foam is provided at its end. The input end of the dispersion unit is connected to the output end of the mixing pipe, and it has multiple output ends for distributing the foam decontamination liquid generated by the mixing to different spray gun devices.

[0006] Furthermore, the annular gas cavity structure is an annular gas cavity formed by two annular plates and the outer wall of a through pipe. The two annular plates are located on both sides of the gas injection port, and the through pipe is fixedly installed between the two annular plates.

[0007] Furthermore, the annular gas cavity is connected to the gas injection port, and the pipe wall of the through pipe is provided with a plurality of through holes that connect the annular gas cavity to the central flow channel.

[0008] Furthermore, the flow channel of the nozzle gradually narrows from the input end to the output end and is connected to a section of constant flow channel of equal diameter.

[0009] Furthermore, the water supply unit includes a water pump, the inlet of which is connected to a water tank via a pipeline. The pipeline is equipped with a cleaning valve and a branch pipe with an injection valve for the disinfectant. The outlet of the water pump is connected to the foam liquid mixing chamber via a pipeline equipped with a water flow ratio valve and a water flow meter. The water pump is also equipped with a second inlet connected to an external suction pipe, which is equipped with an external suction valve.

[0010] Furthermore, the liquid supply unit includes a foam pump, the inlet of which is connected to the foam tank through a pipeline with an outlet valve, and the outlet of which is connected to the foam injection port through a pipeline sequentially equipped with a foam liquid proportioning valve, a foam liquid flow meter and a one-way valve.

[0011] Furthermore, the air supply unit includes an air compressor, the outlet of which is connected to a gas injection port via a pipeline equipped with an air supply valve and a check valve.

[0012] Furthermore, the dispersing unit includes a diversion pipe, the input end of which is connected to a mixing pipe, the first output end of which is connected to an outlet with an outlet valve, the second output end of which is connected to a robotic arm spray gun through a pipe with a robotic arm spray gun supply valve, and the third output end of which is connected to a ground-extinguishing spray gun through a pipe with a ground-extinguishing switch valve.

[0013] Furthermore, the water tank, foam tank, water supply unit, liquid supply unit, air supply unit, and mixing pipe are all integrated and arranged inside the carriage, forming a mobile foam disinfection liquid preparation platform.

[0014] The present invention has the following advantages: 1. This decontamination liquid preparation mechanism, through a multi-stage mixing structure and precise metering control, first achieves preliminary liquid-phase mixing of water and foaming liquid in the foam liquid mixing chamber. Then, the mixture is accelerated and sprayed by a nozzle, causing the fluid to undergo intense shearing and collision with the multi-directional uniform gas from the annular gas chamber in the gas-liquid mixing chamber, greatly improving the gas-liquid interaction efficiency and enabling the gas to be efficiently segmented and encapsulated. Finally, through the fine rectification effect of the foaming net, a high-expansion foam with uniform, fine bubbles and high stability is output. This process effectively overcomes the shortcomings of insufficient mixing and large bubble size dispersion in traditional equipment, and significantly improves the coverage and durability of the foam. 2. This decontamination liquid preparation mechanism integrates a high-precision water flow and foam liquid flow monitoring and feedback device, which can adjust the opening of the proportional valve in real time to ensure that a constant mixing ratio can be maintained under fluctuating water pressure and flow conditions, thereby ensuring that the foaming liquid concentration is always in the optimal range. This avoids waste of raw liquid and eliminates foaming failure caused by imbalance of ratio, demonstrating significant economy and reliability. 3. This decontamination solution preparation mechanism, through a highly integrated and modular design concept, compactly arranges water supply, liquid supply, gas supply, and multi-stage mixing units within the vehicle compartment. Through a one-inlet, multiple-outlet diversion design, it enables a single mixing unit to simultaneously support multiple terminal operations, including manual spray guns, robotic arm spray guns, and ground-based disinfection spray guns. Operators can quickly switch between different spray modes according to on-site needs, greatly enhancing the equipment's applicability and mobility, and meeting the practical requirements of multi-task parallel operation and rapid response in complex disaster sites. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the disinfectant preparation mechanism proposed in this invention; Figure 2 for Figure 1 A detailed breakdown diagram; Figure 3 This is the front view of the carriage; Figure 4 for Figure 3 Top view; Figure 5for Figure 3 Internal structure diagram; Figure 6 This is the main view of the branch pipe; Figure 7 This is an internal sectional view of the mixed tube.

[0016] In the diagram: 1. Liquid mixing chamber; 2. Foam liquid injection port; 3. Nozzle; 4. Gas-liquid mixing chamber; 41. Annular plate; 42. Through pipe; 43. Through hole; 5. Gas injection port; 6. Annular gas chamber; 7. Foaming net; 8. Carriage; 9. Tank; 91. Water tank; 92. Foam box; 93. Water pump; 931. External water suction pipe; 933. Decontamination liquid injection pipe; 94. Foam pump; 95. Air compressor; 10. Mixing pipe; 11. Diversion pipe; 12. Outlet liquid port; 121. Outlet liquid valve; 13. Robotic arm spray gun; 131. Robotic arm spray gun supply valve; 14. Manual spray gun; 15. Ground disinfection spray gun; 151. Ground disinfection switch valve; Detailed Implementation

[0017] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Reference Figures 1-7 A decontamination liquid preparation mechanism includes a carriage 8, inside which a container 9 is installed; the internal space of the container 9 is divided into two independent parts by a partition, which serve as a water tank 91 for storing clean water and a foam box 92 for storing foaming concentrate; the output end of the water tank 91 is connected to a water supply unit, and the output end of the foam box 92 is connected to a liquid supply unit. The outputs of both the water supply unit and the liquid supply unit converge into the mixing pipe 10. Inside the mixing pipe 10 is a foam liquid mixing chamber 1, the input end of which is connected to the water supply unit, and a foam liquid injection port 2 is provided on the side wall for connecting to the liquid supply unit. The outlet end of the foam liquid mixing chamber 1 is connected to a gas-liquid mixing chamber 4, and a nozzle 3 is provided at the junction of the two. This nozzle is conical in structure, with an input diameter larger than the output diameter, and has a constant-diameter flow channel, which can increase the fluid velocity and enhance the initial mixing effect. A gas injection port 5 is provided on the side wall of the gas-liquid mixing chamber 4 for connecting to the gas supply unit. A foaming net 7 is installed at the end of the mixing pipe to ultimately generate uniform and fine foam. The working process is as follows: The water supply unit pumps clean water from the water tank 91 into the foam liquid mixing chamber 1 of the mixing pipe 10; at the same time, the liquid supply unit delivers the foaming liquid from the foam box 92 to the same mixing chamber to achieve preliminary mixing of water and foam liquid; the premixed liquid enters the gas-liquid mixing chamber 4 after being accelerated by the nozzle 3; at the same time, the gas supply unit injects high-pressure gas through the gas injection port 5, so that the gas and liquid can fully collide, shear and mix in the chamber; finally, the mixed liquid forms a large number of tiny and uniform bubbles under the separation effect of the foaming net 7, which significantly improves the foaming ratio and foam stability, thereby enhancing the washing and disinfection effect; Specifically: The water supply unit includes a water pump 93, whose inlet is connected to a water tank 91 via a pipeline. This pipeline is equipped with a cleaning valve and branches off into a decontamination liquid injection pipe 933, which is equipped with an injection valve for adding external decontamination additives when necessary. The outlet of the water pump 93 is connected to the foam liquid mixing chamber 1 of the mixing pipe 10 via a pipeline. This line is equipped with a water flow ratio valve and a water flow meter to accurately control the water supply ratio. The water pump 93 also has a second inlet, which is connected to an external water suction pipe 931 and equipped with an external water suction valve, so as to draw water directly from an external water source. The liquid supply unit mainly includes a foam pump 94, whose inlet is connected to the foam box 92 via a pipeline, and the pipeline is equipped with a liquid outlet valve; the outlet is connected to the foam liquid injection port 2 of the mixing pipe 10 via a pipeline. A foam liquid proportioning valve, a foam liquid flow meter and a check valve are installed in sequence on this section of the pipeline to ensure quantitative liquid supply and prevent backflow. The air supply unit consists of an air compressor 95, whose outlet is connected to the gas injection port 5 of the mixing pipe 10 via a pipeline. The pipeline is equipped with an air supply valve and a check valve to control the gas flow and ensure the system's tightness. Further optimization lies in, such as Figure 7 As shown, the gas-liquid mixing chamber 4 has two annular plates located on both sides of the gas injection port 5, and a through pipe is fixed between the two plates; the outer wall of the through pipe and the two plates form an annular cavity—an annular gas cavity 6, which is connected to the gas injection port 5; several through holes are opened circumferentially on the wall of the through pipe, so that the high-pressure gas can be evenly diffused into the annular gas cavity, and then evenly sprayed into the liquid flow through the through holes, which greatly improves the uniformity and efficiency of gas-liquid mixing. When using: In addition, the outlet of the mixing pipe 10 is connected to a dispersing unit, which includes: a four-way diversion pipe 11 with one inlet and three outlets, the inlet of which is connected to the output end of the mixing pipe 10; the first outlet is connected to the outgoing liquid pipe, which is equipped with an outgoing liquid valve 121 and the end is an outgoing liquid port 12, which can be quickly connected to the manual spray gun 14 for operation; the second outlet is connected to the robotic arm spray gun 13 installed on the top of the carriage through a pipe, and the pipeline is equipped with a robotic arm spray gun liquid supply valve 131; the third outlet is connected to the ground disinfection spray gun 15 located at the rear of the carriage, and the pipeline is equipped with a ground disinfection switch valve 151 to meet the usage needs of various disinfection scenarios. Working Principle: The system operates based on precise proportioning control and multi-stage mixing technology. Its core objective is to efficiently mix water, foaming liquid, and air to generate a stable, uniform, high-expansion foam decontamination solution. Through coordinated operation of multiple units, it achieves precise proportioning and efficient mixing of water, liquid, and air, ultimately producing a high-quality foam decontamination solution that can be flexibly distributed to different spray guns, making it suitable for diverse decontamination tasks. Its operation can be divided into three core stages: Liquid phase premixing and initial pressurization stage: Water pump 93 in the water supply unit pumps clean water into foam liquid mixing chamber 1. At the same time, foam pump 94 in the liquid supply unit pressurizes high-concentration foaming liquid into the same chamber through injection port 2 according to a preset ratio. Water and foaming liquid undergo preliminary mixing in this chamber to form a mixed liquid. This step is monitored in real time by water flow meter and foam liquid flow meter, and closed-loop regulation is performed through proportional valve to ensure the accuracy and stability of the mixed liquid concentration, laying an accurate formula foundation for generating high-quality foam. Gas-liquid mixing stage: When the initially mixed liquid flows through the special conical nozzle 3, the cross-sectional area of ​​the flow channel decreases sharply, and the pressure energy of the fluid is converted into kinetic energy, resulting in a significant increase in flow velocity. At this time, the high-pressure gas provided by the air compressor 95 is injected into the pipe simultaneously and uniformly from multiple directions through the annular air chamber 6 and its circumferentially evenly distributed through holes, causing all-round collision and shearing with the high-speed liquid flow. This design greatly increases the contact area between the gas and liquid phases, causing the gas to be divided into tiny gas nuclei and wrapped by the liquid, achieving an extremely thorough and efficient mixing and generating a preliminary foam mixture. Flow stabilization and final foaming stage: The foam mixture, after vigorous mixing, finally reaches the foaming net 7; the foaming net acts as a porous medium barrier, forcing the mixture to flow through its countless tiny pores; this process is equivalent to performing the final and most important fine shearing and rectification on the foam, separating the mixture into countless tiny bubbles of uniform size and stable structure, thereby significantly increasing the foaming ratio and forming fine, durable, high-quality foam.

Claims

1. A decontamination fluid preparation mechanism characterized by, The foam decontamination liquid preparation platform comprises a vehicle cabin, a container, a water supply unit, a liquid supply unit, a gas supply unit, a mixing pipe and a dispersion unit; the container is arranged in the vehicle cabin and is divided into a water tank and a foam tank; the water supply unit is connected with the water tank and is used for supplying pressurized clean water at a predetermined ratio; the liquid supply unit is connected with the foam tank and is used for supplying pressurized foaming liquid at a predetermined ratio; the gas supply unit is used for supplying pressurized gas; the mixing pipe comprises a foam liquid mixing chamber and a gas-liquid mixing chamber which are connected in sequence; the input end of the foam liquid mixing chamber is connected to the water supply unit, the foam liquid injection port formed in the side wall of the foam liquid mixing chamber is connected to the liquid supply unit, a nozzle is arranged between the foam liquid mixing chamber and the gas-liquid mixing chamber and is used for accelerating the flow and enhancing the mixing, the side wall of the gas-liquid mixing chamber is provided with a gas injection port connected to the gas supply unit and is provided with an annular gas cavity structure used for uniformly injecting gas and strengthening the gas-liquid mixing, and the end of the gas-liquid mixing chamber is provided with a foaming net used for generating uniform and fine foam; the input end of the dispersion unit is connected to the output end of the mixing pipe, and the dispersion unit is provided with a plurality of output ends and is used for distributing the foam decontamination liquid generated by mixing to different spray gun devices.

2. A decontamination solution preparation mechanism according to claim 1, wherein The annular gas cavity structure comprises an annular gas cavity surrounded by two annular plates and a through pipe outer wall, and the two annular plates are respectively arranged on the two sides of the gas injection port.

3. A decontamination solution preparation mechanism according to claim 2, wherein The annular gas cavity is in communication with the gas injection port, and a plurality of through holes for connecting the annular gas cavity and the central flow channel are formed in the pipe wall of the through pipe in a ring shape.

4. The decontamination fluid preparation mechanism of claim 1, wherein The flow channel of the nozzle is tapered from the input end to the output end and is connected to a steady flow channel with equal diameter.

5. The decontamination fluid preparation mechanism of claim 1, wherein The water supply unit comprises a water pump, the inlet of the water pump is connected to the water tank through a pipeline, a cleaning valve is arranged on the pipeline, and a decontamination liquid injection pipe with an injection valve is branched from the pipeline; the outlet of the water pump is connected to the foam liquid mixing chamber through a pipeline provided with a water flow ratio valve and a water flow meter; the water pump is further provided with a second inlet connected to an external water suction pipeline, and an external water suction valve is arranged on the external water suction pipeline.

6. The decontamination fluid preparation mechanism of claim 1, wherein The liquid supply unit comprises a foam pump, the inlet of the foam pump is connected to the foam tank through a pipeline provided with an outlet liquid valve, and the outlet of the foam pump is connected to the foam liquid injection port through a pipeline provided with a foam liquid ratio valve, a foam liquid flow meter and a one-way valve in sequence.

7. The decontamination fluid preparation mechanism of claim 1, wherein The gas supply unit comprises an air compressor, and the outlet of the air compressor is connected to the gas injection port through a pipeline provided with a gas supply valve and a one-way valve.

8. The decontamination fluid preparation mechanism of claim 1, wherein The dispersion unit comprises a shunt pipeline, the input end of the shunt pipeline is connected to the mixing pipe, the first output end of the shunt pipeline is connected to an external outlet liquid port provided with an external outlet liquid valve, the second output end of the shunt pipeline is connected to a mechanical arm spray gun through a pipeline provided with a mechanical arm spray gun liquid valve, and the third output end of the shunt pipeline is connected to a ground decontamination spray gun through a pipeline provided with a ground decontamination on-off valve.

9. The decontamination fluid preparation mechanism of claim 1, wherein The water tank, the foam tank, the water supply unit, the liquid supply unit, the gas supply unit and the mixing pipe are integrally arranged in the vehicle cabin and form a mobile foam decontamination liquid preparation platform.

10. A decontamination robot comprising a decontamination fluid conditioning mechanism, characterized in that, The foam decontamination liquid preparation platform adopts the decontamination liquid preparation mechanism.

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