Foam decontamination device

Abstract

The invention discloses a foam decontamination device, which comprises a first conveying unit, a water adding unit, a first mixing unit, a second conveying unit, a gas adding unit, a second mixing unit and a spray gun unit, and is characterized in that the first conveying unit is used for quantitatively conveying a powder disinfectant; the water adding unit is used for quantitatively spraying clean water; the first mixing unit is communicated with the outlet end of the first conveying unit and the outlet end of the water adding unit, and is used for mixing a powder disinfectant with water to form a disinfectant; and the second conveying unit is used for quantitatively conveying the foam liquid. The foam decontamination device has the beneficial effects that clear water, a powder disinfectant, foam liquid and air can be instantly mixed to form a foam disinfectant, the formed foam disinfectant can be immediately used, the problem that the elimination effect is reduced due to the fact that the foam disinfectant is stored for a long time is solved, and the foam decontamination device is suitable for popularization and application. And the addition proportion of the clear water, the powder disinfectant, the foam liquid and the air can be accurately adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of decontamination, and in particular to a foam decontamination device. Background Art

[0002] Foam disinfection is a method of mixing water, disinfectant, foam liquid and air in a certain proportion, foaming, spraying the foam onto the surface of the contaminated object, reacting with toxic agents and biological warfare agents, and eliminating pollutants. Foam disinfection has the advantages of low water consumption and good disinfection effect, and has become a disinfection technology that countries have focused on developing. The foam formed can adhere to the surface of the contaminated object, increasing the residence time of the disinfection agent, thereby extending the reaction time between the agent and the toxic agent, and improving the elimination rate of pollutants. The water consumption of the foam is relatively small, and after the disinfection is completed, only a small amount of water is needed to rinse the foam on the surface of the contaminated object, which greatly saves water resources. The foam has good adhesion, and less waste liquid is generated by the foam, which also reduces the chance of secondary pollution.

[0003] The existing foam disinfection device (such as a foam liquid filling device for a disinfection vehicle disclosed in application number 201710019416.1) is to add powder disinfectant in proportion to a tank or water bag filled with clean water, use manual stirring or a special stirring mechanism to mix the powder disinfectant and clean water evenly to form a disinfectant, then add foam liquid in proportion, and mix the foam liquid and disinfectant evenly, and finally add compressed air to form a foam disinfectant. Once the powder disinfectant is mixed with clean water in the tank or water bag, the proportion of the powder disinfectant cannot be adjusted in the middle, nor can the proportion of the foam liquid be adjusted, so the concentration of the foam disinfectant cannot be adjusted in real time, and the formed foam disinfectant cannot be used immediately. If the foam disinfectant is stored for too long, the elimination effect will be reduced. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and propose a foam disinfection device to solve the technical problems in the prior art that the foam disinfection device cannot instantly mix clean water, powder disinfectant, foam liquid and air to form foam disinfectant liquid, and cannot simultaneously achieve precise and adjustable addition ratios of clean water, powder disinfectant, foam liquid and air.

[0005] In order to achieve the above technical objectives, the technical solution of the present invention provides a foam decontamination device, comprising: A first conveying unit is used to quantitatively convey the powder disinfectant; A water adding unit for quantitatively spraying clean water; a first mixing unit, connected to the outlet end of the first conveying unit and the outlet end of the water adding unit, for mixing the powder disinfectant with water to form a disinfectant solution; A second delivery unit is used to quantitatively deliver the foam liquid; Aeration unit, used to output air in a quantitative manner; a second mixing unit, connected to the outlet end of the first mixing unit, the outlet end of the second conveying unit and the outlet end of the gas adding unit, for mixing the disinfectant, the foam liquid and the air to form a foam disinfectant; The spray gun unit is connected to the outlet end of the second mixing unit and is used for spraying the foam disinfectant.

[0006] Furthermore, the first conveying unit includes a powder storage hopper, a powder transfer roller, a driving assembly and a powder conveying pipe. The powder storage hopper specifically has a powder storage chamber for storing powder disinfectant. A powder outlet connected to the powder storage chamber is provided at the bottom of the powder storage hopper. The powder transfer roller is horizontally and sealedly rotatably arranged in the powder storage chamber and close to the powder outlet. A plurality of powder transfer grooves extending along the length direction of the powder transfer roller are circumferentially provided on the side wall of the powder transfer roller. The driving assembly is connected to one end of the powder transfer roller for driving the powder transfer roller to rotate so that each of the powder transfer grooves is connected to the powder storage chamber or the powder outlet in sequence. The upper end of the powder conveying pipe is connected to the powder outlet, and the lower end of the powder conveying pipe is connected to the first inlet end of the first mixing unit.

[0007] Furthermore, the water adding unit includes a water inlet pipe, a first driving pump, a first water outlet pipe, a second water outlet pipe, a nozzle, a first valve and a second valve, and clean water can be introduced into the water inlet pipe through one end of the water inlet pipe. The inlet end of the first driving pump is connected to the other end of the water inlet pipe, and the first outlet end of the first driving pump is connected to one end of the first water outlet pipe to pump the water in the water inlet pipe into the first water outlet pipe. The second outlet end of the first driving pump is connected to one end of the second water outlet pipe to pump the water in the water inlet pipe into the second water outlet pipe. The inlet end of the nozzle is connected to the other end of the first water outlet pipe, and the outlet end of the nozzle is connected to the second inlet end of the first mixing unit to spray clean water into the first mixing unit. The first valve is arranged on the first water outlet pipe to control the on-off of the first water outlet pipe, and the second valve is arranged on the second water outlet pipe to control the on-off of the second water outlet pipe.

[0008] Furthermore, the first mixing unit includes a vacuum tube, a throat and a liquid infusion tube. The vacuum tube is vertically arranged, and has an upper cavity and a lower cavity that are interconnected. The upper cavity is a columnar structure, the lower cavity is a conical structure, and the diameter of the lower cavity gradually decreases from top to bottom. The lower end of the powder infusion tube is connected to the upper cavity, the nozzle is arranged directly above the vacuum tube and is detachably connected to the vacuum tube, and the outlet end of the nozzle extends into the upper cavity. The throat is vertically arranged, and the upper end of the throat is detachably connected to the lower end of the vacuum tube. The throat has a first mixing chamber and a first diffusion chamber that are interconnected. The first mixing chamber is located above the first diffusion chamber, the first mixing chamber is a columnar structure, the first diffusion chamber is a conical structure, and the diameter of the first diffusion chamber gradually increases from top to bottom. The upper end of the liquid infusion tube is detachably connected to the lower end of the throat, and the lower end of the liquid infusion tube is connected to the first inlet end of the second mixing unit.

[0009] Furthermore, the second conveying unit includes a foam inlet pipe, a second driving pump and a foam outlet pipe, and foam liquid can be introduced into the foam inlet pipe through one end of the foam inlet pipe, the inlet end of the second driving pump is connected to the other end of the foam inlet pipe, and the outlet end of the second driving pump is connected to one end of the foam outlet pipe, so as to pump the foam liquid in the foam inlet pipe into the foam outlet pipe, and the other end of the foam outlet pipe is connected to the second inlet end of the second mixing unit.

[0010] Furthermore, the air filling unit includes an air compressor, a first air outlet pipe, a purge pipeline, a third valve and a fourth valve. The first outlet end of the air compressor is connected to one end of the first air outlet pipe for blowing air into the first air outlet pipe. The second outlet end of the air compressor is connected to one end of the purge pipeline for blowing air into the purge pipeline. The other end of the first air outlet pipe is connected to the third inlet end of the second mixing unit. The other end of the purge pipeline is connected to both the water inlet pipe and the foam inlet pipe. The third valve is arranged on the first air outlet pipe for controlling the on-off of the first air outlet pipe. The fourth valve is arranged on the purge pipeline for controlling the on-off of the purge pipeline.

[0011] Further, the second mixing unit includes a mixing tube, a foam filling tube, an air filling tube and a mixing sheet, one end of the mixing tube is connected to the lower end of the infusion tube, and the other end of the mixing tube is connected to the inlet end of the spray gun unit. The mixing tube has an entrance chamber, a second diffusion chamber, a second mixing chamber, a contraction chamber and a discharge chamber that are connected to each other. The entrance chamber, the second diffusion chamber, the second mixing chamber, the contraction chamber and the discharge chamber are distributed in sequence along the moving direction of the fluid. The entrance chamber is a columnar structure, the second diffusion chamber is a conical structure, and the diameter of the second diffusion chamber gradually increases along the moving direction of the fluid. The second mixing chamber is a columnar structure, the contraction chamber is a conical structure, and the diameter of the contraction chamber gradually decreases along the moving direction of the fluid. The discharge chamber is a columnar structure, one end of the foam filling tube is connected to the entrance chamber, and the other end is connected to the other end of the foam outlet pipe, one end of the air filling tube is connected to the second diffusion chamber, and the other end is connected to the other end of the first air outlet pipe, and the mixing sheet is fixed in the second mixing chamber.

[0012] Furthermore, there are two spray gun units, one of which is connected to the other end of the mixing tube to spray foam disinfectant, and the other spray gun unit is connected to the other end of the second water outlet pipe to spray high-pressure clean water.

[0013] Furthermore, the two spray gun units each include a coiled hose and a spray gun, wherein one end of one of the coiled hoses is connected to the other end of the mixing tube, the inlet end of one of the spray guns is connected to the other end of the corresponding coiled hose, one end of the other coiled hose is connected to the other end of the second water outlet pipe, and the inlet end of the other spray gun is connected to the other end of the corresponding coiled hose.

[0014] Furthermore, the foam decontamination device also includes a control unit, which is electrically connected to the first conveying unit, the water adding unit, the second conveying unit and the gas adding unit, and is used to control the output power of the first conveying unit, the water adding unit, the second conveying unit and the gas adding unit.

[0015] Compared with the prior art, the beneficial effects of the present invention include: quantitatively conveying powder disinfectant into the first mixing unit through the first conveying unit, quantitatively spraying clean water into the first mixing unit through the water adding unit, the clean water and the powder disinfectant are mixed in the first mixing unit to form a disinfectant, the disinfectant enters the second mixing unit, quantitatively conveying foam liquid into the second mixing unit through the second conveying unit, quantitatively outputting air into the second mixing unit through the gas adding unit, the foam liquid, air and the disinfectant are mixed in the second mixing unit to form a foam disinfectant, and then the foam disinfectant is sprayed out through the spray gun unit so that the foam disinfectant covers the surface of the contaminated object, and the formed foam disinfectant can be used immediately. The foam decontamination device can instantly mix clean water, powder disinfectant, foam liquid and air to form a foam disinfectant, and the formed foam disinfectant can be used immediately, avoiding the problem of reduced elimination effect of the foam disinfectant due to long-term storage, and can realize accurate and adjustable addition ratios of clean water, powder disinfectant, foam liquid and air. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a foam decontamination device provided by the present invention; Figure 2 yes Figure 1 A schematic structural diagram of a first conveying unit in a foam decontamination device; Figure 3 yes Figure 2 A side view of the first conveying unit in FIG. Figure 4 yes Figure 1 A structural schematic diagram of the connection relationship between a first mixing unit, a powder delivery pipe and a nozzle in a foam decontamination device; Figure 5 yes Figure 1 A schematic structural diagram of a second mixing unit in a foam decontamination device; Figure 6 yes Figure 5 A structural schematic diagram of the connection relationship between the air filling pipe and the guide vane; Figure 7 It is a schematic structural diagram of the arrangement relationship between a housing and a control unit in a foam decontamination device provided by the present invention; In the figure: 100 - first conveying unit, 110 - powder storage hopper, 111 - powder storage chamber, 112 - powder outlet, 120 - powder transfer roller, 121 - powder transfer tank, 130 - drive assembly, 131 - rotating drive member, 132 - first transmission assembly, 133 - second transmission assembly, 140 - powder conveying pipe, 150 - stirring screw, 160 - powder receiving hopper, 161 - powder receiving chamber, 200 - water adding unit, 210 - water inlet pipe, 220 - first driving pump, 230 - first water outlet pipe, 240 - second water outlet pipe, 250 - nozzle, 260 - first valve, 270 - second valve, 300 - first mixing unit, 310 - vacuum tube, 311 - upper chamber, 312 - lower chamber, 320 - throat, 321 - first mixing chamber, 322 - first diffusion chamber, 330 - infusion tube, 400 - second delivery unit, 410 - foam inlet pipe, 420 - second driving pump, 4 30-foam outlet pipe, 500-gas filling unit, 510-air compressor, 520-first outlet pipe, 530-purge pipeline, 540-third valve, 550-fourth valve, 600-second mixing unit, 610-mixing pipe, 611-entry chamber, 612-second diffusion chamber, 613-second mixing chamber, 614-contraction chamber, 615-discharge chamber, 620-foam filling pipe, 630-air filling pipe, 631-gas hole, 640 - mixing plate, 650 - guide plate, 700 - spray gun unit, 710 - coil, 720 - spray gun, 800 - control unit, 810 - first control panel, 820 - second control panel, 830 - third control panel, 840 - fourth control panel, 850 - first switch button, 860 - second switch button, 870 - third switch button, 880 - power connector, 900 - housing, 910 - cavity. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] The present invention provides a foam decontamination device, the structure of which is as follows: Figure 1As shown, it includes a first conveying unit 100, a water adding unit 200, a first mixing unit 300, a second conveying unit 400, an air adding unit 500, a second mixing unit 600 and a spray gun unit 700, wherein the first conveying unit 100 is used for quantitatively conveying a powder disinfectant; the water adding unit 200 is used for quantitatively spraying clean water; the first mixing unit 300 is connected to the outlet end of the first conveying unit 100 and the outlet end of the water adding unit 200, so as to mix the powder disinfectant with water and form a disinfectant; the second conveying unit 400 is used for quantitatively conveying a foam liquid; the air adding unit 500 is used for quantitatively outputting air; the second mixing unit 600 is connected to the outlet end of the first mixing unit 300, the outlet end of the second conveying unit 400 and the outlet end of the air adding unit 500, so as to mix the disinfectant, the foam liquid and the air and form a foam disinfectant; the spray gun unit 700 is connected to the outlet end of the second mixing unit 600, so as to spray out the foam disinfectant.

[0019] The powder disinfectant is quantitatively conveyed into the first mixing unit 300 by the first conveying unit 100, and clean water is quantitatively sprayed into the first mixing unit 300 by the water adding unit 200. The clean water and the powder disinfectant are mixed in the first mixing unit 300 to form a disinfectant. The disinfectant enters the second mixing unit 600. The foam liquid is quantitatively conveyed into the second mixing unit 600 by the second conveying unit 400. The air is quantitatively output into the second mixing unit 600 by the gas adding unit 500. The foam liquid, air and the disinfectant are mixed in the second mixing unit 600 to form a foam disinfectant. The foam disinfectant is then sprayed out by the spray gun unit 700 so that the foam disinfectant covers the surface of the contaminated object. The formed foam disinfectant can be used immediately. The foam decontamination device can instantly mix clean water, powder disinfectant, foam liquid and air to form a foam disinfectant. The formed foam disinfectant can be used immediately, avoiding the problem of reduced elimination effect of the foam disinfectant due to long storage, and can realize accurate and adjustable addition ratios of clean water, powder disinfectant, foam liquid and air.

[0020] As a preferred embodiment, please refer to Figure 2 and Figure 3The first conveying unit 100 includes a powder storage hopper 110, a powder transfer roller 120, a driving component 130 and a powder conveying pipe 140. The powder storage hopper 110 specifically has a powder storage chamber 111, and the powder storage chamber 111 is used to store powder disinfectant. The bottom of the powder storage hopper 110 is provided with a powder outlet 112 connected to the powder storage chamber 111. The powder transfer roller 120 is horizontally and sealed and rotatably arranged in the powder storage chamber 111 and close to the powder outlet 112. A plurality of powder transfer grooves 121 extending along the length direction of the powder transfer roller 120 are circumferentially provided on the side wall of the powder transfer roller 120. The driving component 130 is connected to one end of the powder transfer roller 120 and is used to drive the powder transfer roller 120 to rotate so that each of the powder transfer grooves 121 is sequentially connected to the powder storage chamber 111 or the powder outlet 112. The powder conveying pipe The upper end of 140 is connected to the powder outlet 112, and the lower end of the powder conveying pipe 140 is connected to the first inlet end of the first mixing unit 300. By controlling the driving component 130, the driving component 130 can drive the powder transfer roller 120 to rotate. During the rotation of the powder transfer roller 120, each of the powder transfer grooves 121 is sequentially connected to the powder storage chamber 111 or the powder outlet 112. When the powder transfer groove 121 is connected to the powder storage chamber 111, the powder disinfectant in the powder storage chamber 111 enters the powder transfer groove 121. When the powder transfer groove 121 is connected to the powder outlet 112, the powder disinfectant in the powder transfer groove 121 is discharged from the powder outlet 112. The rotation speed of the powder transfer roller 120 is driven by the driving component 130, so that the weight of the powder disinfectant output per minute can be adjusted.

[0021] As a preferred embodiment, the top of the powder storage hopper 110 is circular and open, the diameter of the top opening is 400 mm, the bottom is a rectangular opening, the volume of the powder storage chamber 111 is greater than or equal to 30L, and the powder storage hopper 110 is made of stainless steel with a wall thickness of 1.2 mm.

[0022] As a preferred embodiment, please refer to Figure 3 The longitudinal section of the powder transfer groove 121 is a trapezoidal structure, and the opening width of the powder transfer groove 121 gradually increases from the inside to the outside, which is convenient for the powder disinfectant to fall.

[0023] As a preferred embodiment, please refer to Figure 2 The powder conveying pipe 140 is a bent pipe structure. The upper end of the vertical section of the powder conveying pipe 140 is connected to the powder outlet 112, and the lower end of the inclined section of the powder conveying pipe 140 is connected to the first inlet end of the first mixing unit 300. The angle between the inclined section of the powder conveying pipe 140 and the vertical direction is 55°. The powder disinfectant is introduced into the first mixing unit 300 through the powder conveying pipe 140.

[0024] As a preferred embodiment, please refer to Figure 2 and Figure 3 The first conveying unit 100 also includes a stirring screw 150, which is horizontally and rotatably arranged in the powder storage chamber 111 and is located above the powder rotating roller 120. The driving assembly 130 is also connected to one end of the stirring screw 150, and is used to drive the stirring screw 150 to rotate so that the stirring screw 150 stirs the powder disinfectant in the powder storage chamber 111 to ensure that the powder disinfectant is not compacted or blocked at the bottom of the powder storage chamber 111. The central axis diameter of the stirring screw 150 is greater than or equal to 10 mm, and a plurality of fins are circumferentially arranged on the central axis. The height of the fin is 10 mm and the thickness is 2 mm.

[0025] As a preferred embodiment, please refer to Figure 2 The driving component 130 includes a rotating driving member 131 and a first transmission component 132. Both ends of the first transmission component 132 are respectively connected to the output end of the rotating driving member 131 and one end of the powder transferring roller 120 to convert the rotation of the output end of the rotating driving member 131 into the rotation of the powder transferring roller 120. By manipulating the rotating driving member 131, the output end of the rotating driving member 131 rotates. The first transmission component 132 can convert the rotation of the output end of the rotating driving member 131 into the rotation of the powder transferring roller 120. The first transmission component 132 is a pulley drive or a sprocket and chain drive.

[0026] As a preferred embodiment, please refer to Figure 2 The driving assembly 130 also includes a second transmission assembly 133, both ends of which are respectively connected to the other end of the powder transfer roller 120 and one end of the stirring screw 150 to convert the rotation of the powder transfer roller 120 into the rotation of the stirring screw 150. By manipulating the rotating driving member 131, the output end of the rotating driving member 131 is rotated, and the second transmission assembly 133 can convert the rotation of the output end of the rotating driving member 131 into the rotation of the stirring screw 150. The second transmission assembly 133 is a gear meshing transmission.

[0027] As a preferred embodiment, please refer to Figure 2 The first conveying unit 100 also includes a powder receiving hopper 160, which is arranged directly below the powder storage hopper 110 and has a powder receiving chamber 161. The powder receiving chamber 161 is connected to the powder outlet 112, and the upper end of the powder conveying pipe 140 is connected to the powder receiving chamber 161. The powder receiving hopper 160 can be used to cache the powder disinfectant quantitatively discharged from the powder rotating roller 120.

[0028] As a preferred embodiment, please refer to Figure 1 and Figure 4 The water adding unit 200 includes a water inlet pipe 210, a first driving pump 220, a first water outlet pipe 230, a second water outlet pipe 240, a nozzle 250, a first valve 260 and a second valve 270. Clean water can be introduced into the water inlet pipe 210 through one end of the water inlet pipe 210. The inlet end of the first driving pump 220 is connected to the other end of the water inlet pipe 210, and the first outlet end of the first driving pump 220 is connected to one end of the first water outlet pipe 230 to pump water in the water inlet pipe 210 into the first water outlet pipe 230. The second outlet end of the first driving pump 220 is connected to one end of the second water outlet pipe 240 to pump water in the water inlet pipe 210 into the second water outlet pipe 240. The inlet end of the nozzle 250 is connected to the other end of the first water outlet pipe 230, and the outlet end of the nozzle 250 is connected to the outlet end of the first mixing unit 300. The second inlet end is connected to spray clean water into the first mixing unit 300. The first valve 260 is arranged on the first water outlet pipe 230 to control the on-off of the first water outlet pipe 230. The second valve 270 is arranged on the second water outlet pipe 240 to control the on-off of the second water outlet pipe 240. The first valve 260 is opened and the second valve 270 is closed. The first driving pump 220 can pump the water in the water inlet pipe 210 into the first water outlet pipe 230. The water in the first water outlet pipe 230 enters the nozzle 250 and sprays high-pressure clean water into the first mixing unit 300 through the nozzle 250. High-pressure water is provided to the first mixing unit 300 through the first water outlet pipe 230. High-pressure clean water is provided separately for the foam decontamination device through the second water outlet pipe 240 to eliminate contamination on the surface of the contaminated object.

[0029] As a preferred embodiment, the model of the first driving pump 220 is BM1910, with a flow rate of 19 L / min, a pressure of 100 bar, a power of 4 kW, and a rotation speed of 1450 r / min.

[0030] As a preferred embodiment, please refer to Figure 4 The nozzle 250 is a central jet structure, the front jet hole is a columnar structure, the length of the front jet hole is greater than or equal to 15 mm, and the rear jet hole is a conical structure, and the diameter gradually decreases from the outside to the inside.

[0031] As a preferred embodiment, the first valve 260 is a first solenoid valve, and the second valve 270 is a second solenoid valve.

[0032] As a preferred embodiment, please refer to Figure 4The first mixing unit 300 includes a vacuum tube 310, a throat tube 320 and a liquid infusion tube 330. The vacuum tube 310 is vertically arranged. The vacuum tube 310 has an upper chamber 311 and a lower chamber 312 that are interconnected. The upper chamber 311 is a columnar structure, and the lower chamber 312 is a conical structure. The diameter of the lower chamber 312 gradually decreases from top to bottom. The lower end of the powder conveying pipe 140 is connected to the upper chamber 311. The nozzle 250 is arranged directly above the vacuum tube 310 and is detachably connected to the vacuum tube 310. The outlet end of the nozzle 250 extends into the upper chamber 311. The throat tube 320 is vertically arranged. The upper end of the throat tube 320 is detachably connected to the lower end of the vacuum tube 310. The throat tube 320 has a first mixing chamber 321 and a first diffusion chamber 322 that are interconnected. The first mixing chamber 321 is located at the The first diffusion chamber 322 is located above the first mixing chamber 321, the first diffusion chamber 322 is a columnar structure, the first diffusion chamber 322 is a conical structure, and the diameter of the first diffusion chamber 322 gradually increases from top to bottom. The upper end of the infusion tube 330 is detachably connected to the lower end of the throat 320, and the lower end of the infusion tube 330 is connected to the first inlet end of the second mixing unit 600. The diameter of the upper chamber 311 is greater than or equal to 35 mm, and the angle of the cone end of the longitudinal section of the lower chamber 312 is between 120° and 150°. The length of the first mixing chamber 321 is between 40 cm and 60 cm. The diameter of the first mixing chamber 321 is equal to 3-5 times the diameter of the front jet hole of the nozzle 250. The angle of the cone end of the longitudinal section of the first diffusion chamber 322 is between 15° and 25°. The length of the first diffusion chamber 322 is between 30 cm-50 cm. When working, the nozzle 250 sprays high-pressure clean water into the upper chamber 311, and the high-speed water flow forms a vacuum state in the upper chamber 311 and the lower chamber 312. The powder disinfectant in the powder conveying pipe 140 is sucked into the upper chamber 311 and the lower chamber 312 under its own gravity and the action of vacuum. The powder disinfectant and clean water are mixed in the first mixing chamber 321 to form a disinfectant. The disinfectant enters the first diffusion section and then enters the infusion pipe 330.

[0033] As a preferred embodiment, please refer to Figure 4 The nozzle 250 and the vacuum tube 310 are connected via threads. Rotating the nozzle 250 can adjust the distance between the nozzle 250 and the first mixing chamber 321. In practical applications, when the distance between the nozzle 250 and the first mixing chamber 321 is adjusted to a suitable length, the nozzle 250 and the vacuum tube 310 can be locked by bolts.

[0034] As a preferred embodiment, please refer to Figure 4The upper end of the throat pipe 320 is connected to the lower end of the vacuum tube 310 via bolts, and a sealing ring is provided between the throat pipe 320 and the vacuum tube 310.

[0035] As a preferred embodiment, please refer to Figure 4 The upper end of the infusion tube 330 is connected to the lower end of the throat tube 320 via threads.

[0036] As a preferred embodiment, please refer to Figure 1 The second conveying unit 400 includes a foam inlet pipe 410, a second driving pump 420 and a foam outlet pipe 430. Foam liquid can be introduced into the foam inlet pipe 410 through one end of the foam inlet pipe 410. The inlet end of the second driving pump 420 is connected to the other end of the foam inlet pipe 410, and the outlet end of the second driving pump 420 is connected to one end of the foam outlet pipe 430, so as to pump the foam liquid in the foam inlet pipe 410 into the foam outlet pipe 430. The other end of the foam outlet pipe 430 is connected to the second inlet end of the second mixing unit 600. By controlling the second driving pump 420, the second driving pump 420 can pump the foam liquid in the foam inlet pipe 410 into the foam outlet pipe 430, so that foam liquid can be added to the second mixing unit 600. By controlling the output power of the second driving pump 420, the weight of the powder disinfectant output per minute can be adjusted.

[0037] As a preferred embodiment, the flow rate of the second driving pump 420 is 2.5 ml / min, the rotation speed is 1450 r / min, and the power is 0.6 kW.

[0038] As a preferred embodiment, please refer to Figure 1The gas filling unit 500 includes an air compressor 510, a first air outlet pipe 520, a purge pipeline 530, a third valve 540 and a fourth valve 550. The first outlet end of the air compressor 510 is connected to one end of the first air outlet pipe 520 for blowing air into the first air outlet pipe 520. The second outlet end of the air compressor 510 is connected to one end of the purge pipeline 530 for blowing air into the purge pipeline 530. The other end of the first air outlet pipe 520 is connected to the third inlet end of the second mixing unit 600. The other end of the purge pipeline 530 is connected to both the water inlet pipe 210 and the foam inlet pipe 410. The third valve 540 is arranged on the first air outlet pipe 520 to control the flow of the first air outlet pipe 520. The fourth valve 550 is arranged on the purge pipeline 530 to control the on and off of the purge pipeline 530. The third valve 540 is opened, the fourth valve 550 is closed, the air compressor 510 is started, and compressed air can be introduced into the second mixing unit 600 through the first air outlet pipe 520. After completing the operation in winter, it is necessary to drain the remaining water in the device to prevent the equipment and pipelines in the device from being frozen. The first valve 260 is opened, the second valve 270 is opened, the third valve 540 is opened, the fourth valve 550 is opened, and the air compressor 510 is started. Air can be introduced into the entire device through the first air outlet pipe 520 and the purge pipeline 530. The air circulates in the pipeline of the device to blow the remaining water out of the device.

[0039] As a preferred embodiment, the third valve 540 is a third solenoid valve, and the fourth valve 550 is a third solenoid valve.

[0040] As a preferred embodiment, please refer to Figure 1 and Figure 5The second mixing unit 600 includes a mixing tube 610, a foam filling tube 620, an air filling tube 630 and a mixing sheet 640. One end of the mixing tube 610 is connected to the lower end of the infusion tube 330, and the other end of the mixing tube 610 is connected to the inlet end of the spray gun unit 700. The mixing tube 610 has an inlet chamber 611, a second diffusion chamber 612, a second mixing chamber 613, a contraction chamber 614 and a discharge chamber 615 that are interconnected. The inlet chamber 611, the second diffusion chamber 612, the second mixing chamber 613, the contraction chamber 614 and the discharge chamber 615 are distributed in sequence along the moving direction of the fluid. The inlet chamber 611 is a columnar structure, the second diffusion chamber 612 is a conical structure, and the diameter of the second diffusion chamber 612 gradually increases along the moving direction of the fluid. The second mixing chamber 613 is a columnar structure. The contraction chamber 614 is a conical structure, and the diameter of the contraction chamber 614 gradually decreases along the moving direction of the fluid. The discharge chamber 615 is a columnar structure. One end of the foam filling pipe 620 is connected to the inlet chamber 611, and the other end is connected to the other end of the foam outlet pipe 430. One end of the air filling pipe 630 is connected to the second diffusion chamber 612, and the other end is connected to the other end of the first outlet pipe 520. The mixing plate 640 is fixed in the second mixing chamber 613. The disinfectant in the infusion tube 330 enters the inlet chamber 611, the foam liquid enters the inlet chamber 611, and the air enters the second diffusion chamber 612. The disinfectant, foam liquid and air are mixed after passing through the mixing plate 640 in the second mixing chamber 613 to form foam disinfectant. The foam disinfectant enters the contraction chamber 614 and the discharge chamber 615.

[0041] As a preferred embodiment, please refer to Figure 5 The foam filling pipe 620 is a curved pipe structure, one section of the foam filling pipe 620 is located in the inlet cavity 611 and extends along the moving direction of the fluid, the other section of the foam filling pipe 620 extends out of the mixing pipe 610 and is connected to the other end of the foam outlet pipe 430, the angle between the two sections of the foam filling pipe 620 is 135°, the inner diameter of the foam filling pipe 620 is 12 mm, and it is made of stainless steel.

[0042] As a preferred embodiment, please refer to Figure 5The air filling pipe 630 is a curved pipe structure. One section of the air filling pipe 630 is located in the second diffusion chamber 612 and extends along the moving direction of the fluid. The other section of the air filling pipe 630 extends out of the mixing pipe 610 and is connected to the other end of the first air outlet pipe 520. The angle between the two sections of the air filling pipe 630 is 135°. The inner diameter of the air filling pipe 630 is between 12 mm and 15 mm, and it is made of stainless steel.

[0043] As a preferred embodiment, please refer to Figure 5 The end of a section of the air filling pipe 630 is sealed, and a plurality of air holes 631 are circumferentially arranged on the section of the air filling pipe 630. Each row of the air holes 631 is arranged along the length direction of the section of the air filling pipe 630. The air holes 631 are inclined, and the outlet ends of the air holes 631 face the second mixing chamber 613. The diameter of the air holes 631 is 1 mm, and the angle between the air holes 631 and the center line of the section of the air filling pipe 630 is between 30° and 60°. In each row of the air holes 631, the spacing between adjacent air holes 631 is 6 mm, so that air can evenly enter the second diffusion chamber 612.

[0044] As a preferred embodiment, please refer to Figure 6 The second mixing unit 600 also includes a plurality of guide vanes 650, each of which is disposed in the second diffusion chamber 612 and is annularly fixed on the outer wall of a section of the air filling pipe 630 to guide the air. The guide vane 650 has a length of 10 mm and a thickness of 1 mm.

[0045] As a preferred embodiment, please refer to Figure 5 The mixing sheet 640 is a spiral structure, which can improve the mixing effect of the disinfectant, foam liquid and air. The pitch of the mixing sheet 640 is 150 mm, and the number of turns is greater than or equal to 4 turns.

[0046] As a preferred embodiment, please refer to Figure 1 There are two spray gun units 700, one of which is connected to the other end of the mixing tube 610 to spray out foam disinfectant for foam disinfectant cleaning operations, and the other spray gun unit 700 is connected to the other end of the second water outlet pipe 240 to spray out high-pressure clean water for high-pressure cleaning operations.

[0047] As a preferred embodiment, please refer to Figure 1The two spray gun units 700 each include a coiled tube 710 and a spray gun 720, one end of one of the coiled tubes 710 is connected to the other end of the mixing tube 610, the inlet end of one of the spray guns 720 is connected to the other end of the corresponding coiled tube 710, the foam disinfectant in the mixing tube 610 enters the spray gun 720 along the coiled tube 710, and is sprayed out through the spray gun 720 to perform a foam disinfectant cleaning operation, one end of the other coiled tube 710 is connected to the other end of the second water outlet pipe 240, the inlet end of the other spray gun 720 is connected to the other end of the corresponding coiled tube 710, the clean water in the second water outlet pipe 240 enters the spray gun 720 along the coiled tube 710, and is sprayed out through the spray gun 720 to perform a high-pressure cleaning operation.

[0048] As a preferred embodiment, please refer to Figure 7 The foam decontamination device also includes a control unit 800, which is electrically connected to the first conveying unit 100, the water adding unit 200, the second conveying unit 400 and the gas adding unit 500, and is used to control the output power of the first conveying unit 100, the water adding unit 200, the second conveying unit 400 and the gas adding unit 500, so that the first conveying unit 100 can quantitatively output the powder disinfectant, the water adding unit 200 can quantitatively output clean water, the second conveying unit 400 can quantitatively output the foam liquid, and the gas adding unit 500 can quantitatively output the air.

[0049] As a preferred embodiment, please refer to Figure 7 The control unit 800 is electrically connected to the rotating drive member 131, the first drive pump 220, the second drive pump 420 and the air compressor 510, and is used to control the output power of the rotating drive member 131, the first drive pump 220, the second drive pump 420 and the air compressor 510, so that the first conveying unit 100 can quantitatively output powder disinfectant, the water adding unit 200 can quantitatively output clean water, the second conveying unit 400 can quantitatively output foam liquid, and the gas adding unit 500 can quantitatively output air.

[0050] As a preferred embodiment, please refer to Figure 7The control unit 800 includes a first control panel 810, a second control panel 820, a third control panel 830, a fourth control panel 840, a first switch button 850, a second switch button 860, a third switch button 870 and a power connector 880. The first control panel 810 is electrically connected to the rotating drive member 131 to control the rotation speed of the rotating drive member 131 and display the rotation speed and delivery volume data of the rotating drive member 131. The second control panel 820 is electrically connected to the first driving pump 220 to control the frequency of the first driving pump 220 and display the frequency and flow rate data of the first driving pump 220. The third control panel 830 is electrically connected to the second driving pump 220 to control the frequency of the first driving pump 220 and display the frequency and flow rate data of the first driving pump 220. The pump 420 is electrically connected to control the speed of the second driving pump 420 and display the speed and flow data of the second driving pump 420. The fourth control panel 840 is electrically connected to the air compressor 510 to control the frequency of the air compressor 510 and display the frequency and pressure data of the air compressor 510. The first switch button 850 is electrically connected to the second solenoid valve to control the opening and closing of the second solenoid valve. When the first switch button 850 is pressed, the second solenoid valve is opened. The second switch button 860 is electrically connected to the first solenoid valve and the third solenoid valve to control the opening and closing of the first solenoid valve and the third solenoid valve. When the two switch buttons are pressed, the The first solenoid valve and the third solenoid valve are both open, and the third switch button 870 is electrically connected to the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve, and is used to control the opening and closing of the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve. When the third switch button 870 is pressed, the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are all opened, and the power connector 880 is electrically connected to each electrical component and is used to electrically connect or disconnect with an external power supply so that each electrical component is in a power-on or power-off state. When performing high-pressure cleaning operations, the first switch button 850 is pressed, and the second solenoid valve is opened. The first driving pump 220 pumps the clean water in the water inlet pipe 210 into the second water outlet pipe 240, and the clean water in the second water outlet pipe 240 enters the spray gun 720 along the coil pipe 710 and is sprayed onto the object to be cleaned by the spray gun 720. When performing foam decontamination, the second switch button 860 is pressed, the first solenoid valve and the third solenoid valve are both opened, the first driving pump 220 pumps the clean water in the water inlet pipe 210 into the first water outlet pipe 230, and the clean water in the first water outlet pipe 230 enters the nozzle 250, and the nozzle 250 sprays the clean water into the upper chamber 311. The high-speed water flow forms a vacuum state in the upper chamber 311 and the lower chamber 312.The powder disinfectant in the powder delivery pipe 140 is sucked into the upper chamber 311 and the lower chamber 312 under its own gravity and vacuum, and the powder disinfectant and clean water are mixed in the first mixing chamber 321 to form a disinfectant. The disinfectant enters the first diffusion section and then enters the infusion pipe 330. The disinfectant in the infusion pipe 330 enters the entry chamber 611, the foam liquid enters the entry chamber 611, and the air enters the second diffusion chamber 612. The disinfectant, foam liquid and air are mixed in the second mixing chamber 613 after passing through the mixing sheet 640 to form a Foam disinfectant, the foam disinfectant enters the contraction chamber 614 and the discharge chamber 615, and enters the spray gun 720 along the coiled tube 710, and is sprayed by the spray gun 720 to the surface of the contaminated object. When performing air purging, press the third switch button 870, the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are all opened, the air compressor 510 is started, and air can be introduced into the entire device through the first air outlet pipe 520 and the purge pipeline 530. The air circulates in the pipeline of the device to blow the remaining water out of the device.

[0051] As a preferred embodiment, please refer to Figure 7 The foam decontamination device also includes a housing 900, and the housing 900 has a cavity 910. The first conveying unit 100, the water adding unit 200, the first mixing unit 300, the second conveying unit 400, the gas adding unit 500 and the second mixing unit 600 are all arranged in the cavity 910. The first control panel 810, the second control panel 820, the third control panel 830, the fourth control panel 840, the first switch button 850, the second switch button 860, the third switch button 870 and the power connector 880 are all arranged on the housing 900, and the bottom of the housing 900 is provided with walking wheels.

[0052] As a preferred embodiment, the control unit 800 also includes an emergency stop switch, a status indicator light and a diagnostic connector. The emergency stop switch is arranged on the housing 900. When an emergency occurs, the emergency stop switch can be pressed and the device stops running. The status indicator light is arranged on the housing 900 to display the operating status of the device. The diagnostic connector is arranged on the housing 900.

[0053] In order to better understand the present invention, the following Figure 1 - Figure 7 The working principle of the technical solution of the present invention is described in detail: When performing high-pressure cleaning operations, the first switch button 850 is pressed, the second solenoid valve is opened, and the first drive pump 220 pumps the clean water in the water inlet pipe 210 into the second water outlet pipe 240. The clean water in the second water outlet pipe 240 enters the spray gun 720 along the coil 710 and is sprayed onto the object to be cleaned by the spray gun 720. When performing foam cleaning operations, the output end of the rotating drive member 131 is rotated by controlling the rotating drive member 131. The first transmission assembly 132 can convert the rotation of the output end of the rotating drive member 131 into the rotation of the powder transfer roller 120. During the rotation of the powder transfer roller 120, each of the powder transfer grooves 121 is sequentially connected to the powder storage chamber 111 Or the powder outlet 112 is connected, when the powder transfer groove 121 is connected with the powder storage chamber 111, the powder disinfectant in the powder storage chamber 111 enters the powder transfer groove 121, when the powder transfer groove 121 is connected with the powder outlet 112, the powder disinfectant in the powder transfer groove 121 is discharged from the powder outlet 112 and enters the powder conveying pipe 140, and the weight of the powder disinfectant output per minute can be adjusted by adjusting the rotation speed of the rotating driving member 131, and the second driving pump 420 is controlled so that the second driving pump 420 can pump the foam liquid in the foam inlet pipe 410 into the foam outlet pipe 430, so that the foam liquid can be added to the mixing pipe 610, and the second driving pump 4 The speed of the powder disinfectant is 20, and the weight of the powder disinfectant output per minute can be adjusted. The second switch button 860 is pressed, the first solenoid valve and the third solenoid valve are both opened, the first driving pump 220 pumps the clean water in the water inlet pipe 210 into the first water outlet pipe 230, and the clean water in the first water outlet pipe 230 enters the nozzle 250, and the nozzle 250 sprays the clean water into the upper chamber 311. The high-speed water flow forms a vacuum state in the upper chamber 311 and the lower chamber 312. The powder disinfectant in the powder conveying pipe 140 is sucked into the upper chamber 311 and the lower chamber 312 under its own gravity and the vacuum action. The powder disinfectant and the clean water are mixed in the first mixing chamber 321 to form a disinfectant. The disinfectant Enter the first diffusion section, and then enter the infusion tube 330. The disinfectant in the infusion tube 330 enters the inlet chamber 611, and the foam liquid enters the inlet chamber 611. The air compressor 510 is started, and compressed air can be introduced into the mixing tube through the first air outlet pipe 520. The air enters the second diffusion chamber 612. The disinfectant, foam liquid and air are mixed in the second mixing chamber 613 after passing through the mixing plate 640 to form foam disinfectant. The foam disinfectant enters the contraction chamber 614 and the discharge chamber 615, and enters the spray gun 720 along the coil 710. It is sprayed by the spray gun 720 to the surface of the contaminated object. When the air purge operation is performed, the third switch button 870 is pressed.The first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are all opened, and the air compressor 510 is started, and air can be introduced into the entire device through the first air outlet pipe 520 and the purge pipeline 530. The air circulates in the pipeline of the device and blows the remaining water out of the device. The foam disinfection device can instantly mix clean water, powder disinfectant, foam liquid and air to form foam disinfectant. The formed foam disinfectant can be used immediately, avoiding the problem of reduced disinfection effect of foam disinfectant due to long-term storage, and can achieve accurate and adjustable addition ratios of clean water, powder disinfectant, foam liquid and air.

[0054] The foam decontamination device provided by the present invention has the following beneficial effects: (1) It has three working modes, which can perform high-pressure cleaning operations, foam decontamination operations or air purging operations. After completing the operation in winter, the remaining water in the device needs to be drained to prevent the equipment and pipelines in the device from being damaged by freezing. The first valve 260 is opened, the second valve 270 is opened, the third valve 540 is opened, the fourth valve 550 is opened, and the air compressor 510 is started. Air can be introduced into the entire device through the first air outlet pipe 520 and the purging pipeline 530. The air circulates in the pipeline of the device to blow the remaining water out of the device; (2) Powder disinfectants are corrosive. After each operation, the tank or water bag needs to be cleaned. Since the tank is closed and the water bag is soft, both containers are difficult to clean. In addition, cleaning the tank or water bag consumes a large amount of clean water. This foam disinfection device can use less water to clean the device pipeline, saving water resources; (3) The foam disinfection device can instantly mix clean water, powder disinfectant, foam liquid and air to form a foam disinfectant solution. The formed foam disinfectant solution can be used immediately, avoiding the problem of reduced disinfection effect of the foam disinfectant solution due to long-term storage. The device can also achieve precise and adjustable addition ratios of clean water, powder disinfectant, foam liquid and air.

[0055] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A foam decontamination device, characterized in that: include: A first conveying unit is used to quantitatively convey the powder disinfectant; A water adding unit for quantitatively spraying clean water; a first mixing unit, connected to the outlet end of the first conveying unit and the outlet end of the water adding unit, for mixing the powder disinfectant with water to form a disinfectant solution; A second delivery unit is used to quantitatively deliver the foam liquid; Aeration unit, used to output air in a quantitative manner; a second mixing unit, connected to the outlet end of the first mixing unit, the outlet end of the second conveying unit and the outlet end of the gas adding unit, for mixing the disinfectant, the foam liquid and the air to form a foam disinfectant; The spray gun unit is connected to the outlet end of the second mixing unit and is used for spraying the foam disinfectant.

2. The foam decontamination device according to claim 1, characterized in that: The first conveying unit includes a powder storage hopper, a powder transfer roller, a driving component and a powder conveying pipe. The powder storage hopper specifically has a powder storage chamber for storing powder disinfectant. A powder outlet connected to the powder storage chamber is provided at the bottom of the powder storage hopper. The powder transfer roller is horizontally and sealedly rotatably arranged in the powder storage chamber and close to the powder outlet. A plurality of powder transfer grooves extending along the length direction of the powder transfer roller are circumferentially provided on the side wall of the powder transfer roller. The driving component is connected to one end of the powder transfer roller for driving the powder transfer roller to rotate so that each of the powder transfer grooves is connected to the powder storage chamber or the powder outlet in sequence. The upper end of the powder conveying pipe is connected to the powder outlet, and the lower end of the powder conveying pipe is connected to the first inlet end of the first mixing unit.

3. The foam decontamination device according to claim 2, characterized in that: The water adding unit includes a water inlet pipe, a first driving pump, a first water outlet pipe, a second water outlet pipe, a nozzle, a first valve and a second valve. Clean water can be introduced into the water inlet pipe through one end of the water inlet pipe. The inlet end of the first driving pump is connected to the other end of the water inlet pipe, and the first outlet end of the first driving pump is connected to one end of the first water outlet pipe to pump water in the water inlet pipe into the first water outlet pipe. The second outlet end of the first driving pump is connected to one end of the second water outlet pipe to pump water in the water inlet pipe into the second water outlet pipe. The inlet end of the nozzle is connected to the other end of the first water outlet pipe, and the outlet end of the nozzle is connected to the second inlet end of the first mixing unit to spray clean water into the first mixing unit. The first valve is arranged on the first water outlet pipe to control the on-off of the first water outlet pipe. The second valve is arranged on the second water outlet pipe to control the on-off of the second water outlet pipe.

4. The foam decontamination device according to claim 3, characterized in that: The first mixing unit comprises a vacuum tube, a throat and a liquid infusion tube. The vacuum tube is vertically arranged, and has an upper cavity and a lower cavity which are interconnected. The upper cavity is a columnar structure, and the lower cavity is a conical structure, and the diameter of the lower cavity gradually decreases from top to bottom. The lower end of the powder infusion tube is connected with the upper cavity. The nozzle is arranged directly above the vacuum tube and is detachably connected with the vacuum tube. The outlet end of the nozzle extends into the upper cavity. The throat is vertically arranged, and the upper end of the throat is detachably connected with the lower end of the vacuum tube. The throat has a first mixing chamber and a first diffusion chamber which are interconnected. The first mixing chamber is located above the first diffusion chamber. The first mixing chamber is a columnar structure, and the first diffusion chamber is a conical structure, and the diameter of the first diffusion chamber gradually increases from top to bottom. The upper end of the liquid infusion tube is detachably connected with the lower end of the throat, and the lower end of the liquid infusion tube is connected with the first inlet end of the second mixing unit.

5. The foam decontamination device according to claim 4, characterized in that: The second conveying unit includes a foam inlet pipe, a second driving pump and a foam outlet pipe. Foam liquid can be introduced into the foam inlet pipe through one end of the foam inlet pipe. The inlet end of the second driving pump is connected to the other end of the foam inlet pipe, and the outlet end of the second driving pump is connected to one end of the foam outlet pipe for pumping the foam liquid in the foam inlet pipe into the foam outlet pipe. The other end of the foam outlet pipe is connected to the second inlet end of the second mixing unit.

6. The foam decontamination device according to claim 5, characterized in that: The air filling unit includes an air compressor, a first air outlet pipe, a purge pipeline, a third valve and a fourth valve. The first outlet end of the air compressor is connected to one end of the first air outlet pipe for blowing air into the first air outlet pipe. The second outlet end of the air compressor is connected to one end of the purge pipeline for blowing air into the purge pipeline. The other end of the first air outlet pipe is connected to the third inlet end of the second mixing unit. The other end of the purge pipeline is connected to both the water inlet pipe and the foam inlet pipe. The third valve is arranged on the first air outlet pipe for controlling the on-off of the first air outlet pipe. The fourth valve is arranged on the purge pipeline for controlling the on-off of the purge pipeline.

7. The foam decontamination device according to claim 6, characterized in that: The second mixing unit includes a mixing tube, a foam filling tube, an air filling tube and a mixing sheet. One end of the mixing tube is communicated with the lower end of the liquid infusion tube, and the other end of the mixing tube is communicated with the inlet end of the spray gun unit. The mixing tube has an inlet chamber, a second diffusion chamber, a second mixing chamber, a contraction chamber and a discharge chamber that are communicated with each other. The inlet chamber, the second diffusion chamber, the second mixing chamber, the contraction chamber and the discharge chamber are distributed in sequence along the moving direction of the fluid. The inlet chamber is a columnar structure, the second diffusion chamber is a cone structure, and the diameter of the second diffusion chamber gradually increases along the moving direction of the fluid. The second mixing chamber is a columnar structure, the contraction chamber is a cone structure, and the diameter of the contraction chamber gradually decreases along the moving direction of the fluid. The discharge chamber is a columnar structure. One end of the foam filling tube is communicated with the inlet chamber, and the other end is communicated with the other end of the foam outlet tube. One end of the air filling tube is communicated with the second diffusion chamber, and the other end is communicated with the other end of the first air outlet pipe. The mixing sheet is fixed in the second mixing chamber.

8. The foam decontamination device according to claim 7, characterized in that: There are two spray gun units, one of which is connected to the other end of the mixing tube to spray out foam disinfectant, and the other spray gun unit is connected to the other end of the second water outlet pipe to spray out high-pressure clean water.

9. The foam decontamination device according to claim 8, characterized in that: The two spray gun units each include a coiled hose and a spray gun, wherein one end of one of the coiled hoses is connected to the other end of the mixing tube, the inlet end of one of the spray guns is connected to the other end of the corresponding coiled hose, one end of the other coiled hose is connected to the other end of the second water outlet pipe, and the inlet end of the other spray gun is connected to the other end of the corresponding coiled hose.

10. The foam decontamination device according to claim 1, characterized in that: It also includes a control unit, which is electrically connected to the first conveying unit, the water adding unit, the second conveying unit and the gas adding unit, and is used to control the output power of the first conveying unit, the water adding unit, the second conveying unit and the gas adding unit.

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