Portable water-activated dust removal device for airtight cabin

Abstract

The application relates to the technical field of industrial dust removal, and discloses a portable water-activated dust removal device for a closed cabin, which comprises a vehicle body carrying and containing multiple groups of components; the inside of the vehicle body is provided with a sewage collecting assembly for containing sewage, a water storage assembly for cooperating with the sewage collecting assembly to complete water circulation is stacked on the sewage collecting assembly, and a gas-water separation assembly capable of spraying a water curtain to treat dust-containing gas is arranged on the side of the water storage assembly. The portable water-activated dust removal device for the closed cabin forms a water curtain circulation dust removal system by arranging the sewage collecting assembly, the gas-water separation assembly and the water storage assembly, and is integrated in the vehicle body, so that an operator can directly push the device to remove dust in the closed cabin, flexibility covers all dead angle positions, the dust removal effect is improved, and fine dust in the closed cabin is efficiently treated.

Description

Technical Field

[0001] The invention relates to the field of industrial dust removal technology, specifically a portable water-jet dust removal device for use in enclosed chambers. Background Technology

[0002] In industries such as shipbuilding and heavy machinery manufacturing, workers generate large amounts of high-concentration metal dust and harmful fumes when performing welding, grinding, and cutting operations in enclosed compartments (such as ship cabins and storage tanks). These spaces are usually poorly ventilated, and the dust not only seriously endangers workers' health (leading to occupational diseases such as silicosis), but also poses a huge safety hazard of dust explosions.

[0003] For dust control in enclosed chambers, the main methods include: installing large, fixed centralized dust collection systems and manual cleaning with ordinary dry portable vacuum cleaners. In practical applications, large, fixed centralized dust collection systems require laying long pipelines, which cannot cover all work points, especially the dead corners of the chamber, and have extremely poor flexibility. When dry portable vacuum cleaners are in dusty chambers, their internal filters are not only easily clogged by fine dust, but also pose a very high safety risk for flammable and explosive dust (the dust accumulated on the surface of the filter may be ignited). Summary of the Invention

[0004] Existing dust removal devices with good dust control performance are mostly water-based dust collectors. However, due to their water curtain circulation method, they are generally large, fixed or vehicle-mounted equipment, making them bulky and unable to enter narrow compartments or move within uneven surfaces. To address the shortcomings of existing technologies, this invention provides a portable water-based dust collector for enclosed compartments. The optimized structure achieves a lightweight and miniaturized design, allowing for flexible entry and movement within confined spaces, thus solving the problems mentioned in the background.

[0005] The invention provides the following technical solution: a portable water-cooled dust removal device for a sealed compartment, comprising a vehicle body that carries and houses multiple sets of components; The interior of the vehicle body is equipped with a sewage collection component for collecting sewage, and a water storage component is stacked on the sewage collection component to help it complete water circulation. A gas-water separation component that can spray water curtain to treat dust-containing gas is provided on the side of the water storage component. The vehicle body includes a base that can be pushed into a sealed compartment, the sludge collection assembly is mounted on the base, and the base is covered by a housing for integrating and accommodating the sludge collection assembly. The sludge collection assembly includes a sludge collection tank for preliminary treatment of wastewater. The bottom of the sludge collection tank is provided with a sludge discharge port that extends through the casing to the outside for discharging settled sludge. The side of the sludge collection tank away from the sludge discharge port is extended to form a magnetic filter box for separating metal dust. The gas-water separation assembly includes a separation chamber that can contain dust-containing gas. The bottom of the separation chamber narrows to form a funnel-shaped flow guide structure that leads into a sludge collection tank. Inside the separation chamber, there is a spray assembly that is connected to a water storage assembly and can spray a water curtain. The water storage assembly includes a water tank for holding clean water and circulating water. A plug-in filter cartridge is provided at the inlet of the water tank, and the circulation pipe between the water tank and the sludge collection assembly is connected to the inlet of the filter cartridge.

[0006] Preferably, the vehicle body further includes a top shell stacked on top of the housing, and the tops of the gas-water separation component and the water storage component located on top of the dirt collection component are both housed in the top shell.

[0007] Preferably, the top shell includes a housing integrally disposed on the top of the housing, the interior of the housing is provided with an air guide box for cooperating with the top of the air-water separation component to complete the air discharge, and the air guide box and the side of the housing are provided with an exhaust port for communicating with the air-water separation component, and a cover plate is installed on the top of the housing.

[0008] Preferably, the housing located in front of the top shell has a controller embedded in it, which serves as the control center, and a power supply compartment for accommodating the battery and wiring is isolated in the housing below the controller.

[0009] Preferably, the front and rear ends of the housing are respectively provided with a lifting handle and a push rod, which work together with the housing to act on the base to drive it to travel in the sealed compartment.

[0010] Preferably, a vacuum head is attached to the side of the housing, and the end of the vacuum head is connected to the air-water separation component via a hose.

[0011] Preferably, the gas-water separation assembly further includes a demisting assembly arranged in layers inside the separation chamber. A gap for gas passage is formed between the two sides of the demisting assembly and the inner wall of the separation chamber. A tangential plate is provided on the inner wall of the separation chamber between two adjacent layers of the demisting assembly, and the gap between the edge of the tangential plate and the edge of the demisting assembly forms a misaligned fit. The outer wall of the separation chamber is integrally provided with a connection port for connecting with the dust collection head through the casing. The connection port in the separation chamber is located below the defogging component, and a fan for extracting the gas inside the separation chamber is installed on the top of the separation chamber.

[0012] Preferably, the inside of the sludge collection box is rotatably equipped with a spiral rod for direct access to the sludge inlet and outlet, and the constriction port at the bottom of the separation chamber is suspended above the spiral rod. The bottom of the sludge outlet, which passes through the machine casing, is equipped with a sludge discharge valve that cooperates with the spiral rod for sludge discharge.

[0013] Preferably, a partition for skimming wastewater is formed between the sludge collection tank and the magnetic filter tank, and a magnetic separator that extends directly into the magnetic filter tank is inserted into the outside of the magnetic filter tank. An outlet is formed on the outside of the bottom of the magnetic filter tank, which is connected to the water storage component through an external lift pump. The top of the sludge collection tank is provided with a cover.

[0014] Preferably, the top of the water storage tank has a water inlet for hanging the filter cartridge, and a drain pipe is provided inside the water storage tank that can be connected to the dirt collection component through a pipe. The drain pipe is directly connected to the water inlet. A tank cover is installed on the top of the water inlet. An outlet is formed on the outer side of the bottom of the water storage tank that is connected to the air-water separation component through an external high-pressure water pump.

[0015] Compared with existing technologies, the invention has the following beneficial effects: 1. This portable water-cooled dust removal device for enclosed compartments forms a water curtain circulation dust removal system by setting up a dirt collection component, an air-water separation component, and a water storage component, and integrates it into the vehicle body, so that the operator can directly push the device to remove dust in the enclosed compartment. It flexibly covers all dead corners and improves the dust removal effect, effectively controlling fine dust in the enclosed compartment.

[0016] 2. This portable water-cooled dust removal device for enclosed compartments uses a water curtain circulation method to remove dust, which can directly integrate the dust into the water, fundamentally eliminating the risk of dust explosion and improving operational safety.

[0017] 3. This portable water-cooled dust removal device for enclosed chambers combines a magnetic filter box in the dirt collection assembly with a filter cartridge in the water storage assembly, enabling filtration to be completed during the water circulation process within the device. This extends the continuous working time after a single water replenishment, reduces the hassle of frequent water replenishment and sewage discharge, and is especially suitable for dust treatment in metal processing workshops. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of the invention; Figure 2 A schematic diagram of the three-dimensional structure of the invention vehicle body; Figure 3 A schematic diagram of the side profile of the vehicle body for the invention; Figure 4 A schematic diagram of the disassembled structure of the vehicle body top shell for the invention; Figure 5 A schematic diagram showing the combined state of various structures inside the vehicle body; Figure 6 A schematic diagram of the disassembled structure of the inventive dirt collection component; Figure 7 A schematic diagram of the cross-sectional structure of the gas-liquid separation component for the invention; Figure 8A schematic diagram of the cross-sectional structure of the water storage component for the invention.

[0019] In the diagram: 1. Vehicle body; 11. Housing; 12. Top shell; 121. Shell; 122. Air guide box; 123. Cover plate; 13. Base; 14. Controller; 15. Power supply compartment; 16. Handle; 17. Push rod; 18. Dust suction head; 2. Sludge collection assembly; 21. Sludge collection box; 22. Magnetic filter box; 23. Partition plate; 24. Sludge discharge port; 25. Sludge discharge valve; 26. Spiral rod; 27. Magnetic separator; 28. Cover; 3. Air-water separation assembly; 31. Separation chamber; 32. Demisting assembly; 33. Tangential plate; 34. Connection port; 35. Spray assembly; 36. Fan; 4. Water storage assembly; 41. Water storage tank; 42. Water guide port; 43. Filter cartridge; 44. Drainage pipe; 45. Box cover; 5. High-pressure water pump; 6. Lifting pump. Detailed Implementation

[0020] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0021] Please see Figure 1-3 A portable water-cooled dust removal device for enclosed compartments, comprising a vehicle body 1 that carries and houses multiple sets of components; The interior of the vehicle body 1 is equipped with a sewage collection component 2 for collecting sewage, and a water storage component 4 is stacked on the sewage collection component 2 to help it complete the water circulation. A gas-water separation component 3 that can spray water curtain to treat dust-containing gas is provided on the side of the water storage component 4.

[0022] In one implementation, the overall structure is optimized by integrating the main components into the vehicle body 1, achieving a lightweight and miniaturized design that allows it to flexibly enter and move into confined spaces.

[0023] For details, please refer to Figure 2 The vehicle body 1 includes a base 13 that can be pushed into a sealed compartment, a sludge collection assembly 2 is mounted on the base 13, and a housing 11 for integrating and accommodating the sludge collection assembly 2 is provided around the base 13.

[0024] In one embodiment, the weight of the entire machine is concentrated in the lower part by using the dirt collection assembly 2 to improve the stability of driving. Two large-sized directional wheels and two universal wheels with braking function are equipped on the base 13 to ensure stable movement and flexible steering on uneven ground in the cabin.

[0025] Please refer to Figure 2 and Figure 4The vehicle body 1 also includes a top shell 12 stacked on top of the housing 11, and the tops of the gas-water separation component 3 and the water storage component 4 located on top of the dirt collection component 2 are both housed in the top shell 12.

[0026] In this embodiment, the top shell 12 covers the gas-water separation component 3 and the water storage component 4 in one space. By opening the top shell 12, the top structure of the gas-water separation component 3 and the water storage component 4 can be directly inspected and repaired. The gas-water separation component 3 and the water storage component 4 can also be directly disassembled from the top shell 12, which is convenient for maintenance.

[0027] Please refer to Figure 4 The top shell 12 includes a shell 121 integrally disposed on the top of the housing 11. The interior of the shell 121 is provided with an air guide box 122 for cooperating with the top of the air-water separation component 3 to complete the air discharge. The air guide box 122 and the side of the shell 121 are provided with an exhaust port for connecting the air-water separation component 3. A cover plate 123 is installed on the top of the shell 121.

[0028] In this embodiment, the gas discharged from the gas-water separation component 3 is guided to both sides by the air guide box 122, avoiding direct inhalation of the discharged gas when pushing the dust removal, thus improving safety during use; in other embodiments, the air guide box 122 can also be a chimney-shaped structure, which can achieve the effect of this embodiment.

[0029] Please refer to Figure 2-5 The housing 11 located in front of the top housing 12 has a controller 14 embedded in it, which serves as the control center. A power supply compartment 15, which can be used to house the battery and wiring, is isolated in the housing 11 below the controller 14.

[0030] In this embodiment, the power supply compartment 15 is located in the lower middle position. Key electrical components such as the battery pack, motor, and circuit board are all encapsulated with explosion-proof materials. The overall design aims to meet the ATEX Zone 22 explosion-proof standard, ensuring safe use in potentially explosive environments. In other embodiments, the power supply compartment 15 can also be designed on the base 13, which can achieve the same effect as this embodiment.

[0031] Please refer to Figure 2 and Figure 4 The front and rear ends of the housing 11 are respectively provided with a lifting handle 16 and a push rod 17. The lifting handle 16 and the push rod 17 work together with the housing 11 to act on the base 13 to drive it to travel in the sealed compartment.

[0032] In this embodiment, the lifting handle 16 and the push rod 17 work together. When encountering small steps, the device head can be lifted by manually gripping the lifting handle 16, making it easier to cross certain terrains and improving its flexibility.

[0033] Please refer to Figure 2A vacuum head 18 is attached to the side of the housing 11, and the end of the vacuum head 18 is connected to the air-water separation assembly 3 via a hose.

[0034] In this embodiment, the suction head 18 is directly installed with the air-water separation component 3, and the suction force generated by the negative pressure in the air-water separation component 3 is used to absorb dust. In other embodiments, the suction hose can also be connected to the air-water separation component 3 with an aviation plug-type quick-release interface, which makes the installation operation simple and can achieve the effect of this embodiment.

[0035] In this embodiment, the air-water separation component 3, combined with the suction head 18, forms a Venturi dust removal structure. Water mist is sprayed into the air-water separation component 3 to separate particles from the dust-laden gas. In other embodiments, the handle of the suction head 18 can be a Venturi tube, and the throat can be equipped with a replaceable ceramic bushing to cope with highly abrasive metal dust. The nozzle is designed as a multi-stage swirling structure, all of which can achieve the effect of this embodiment.

[0036] For details, please refer to Figure 6 The sludge collection assembly 2 includes a sludge collection box 21 for preliminary treatment of sewage. The bottom of the sludge collection box 21 is provided with a sludge discharge port 24 extending through the housing 11 to the outside for discharging settled sludge. The side of the sludge collection box 21 away from the sludge discharge port 24 is extended to form a magnetic filter box 22 for separating metal dust.

[0037] In one implementation, an integrated design is used to form a parallel compartmentalized structure, which allows the incoming wastewater to be divided into two parts: one for sedimentation and discharge, and the other for recirculation, thus completing the preliminary treatment of the wastewater and reducing the burden on subsequent filtration units.

[0038] Please refer to Figure 6 The inside of the sludge collection box 21 is equipped with a spiral rod 26 for direct access to the sludge inlet and outlet 24, and the constriction port at the bottom of the separation chamber 31 is suspended above the spiral rod 26. The bottom of the sludge outlet 24, which passes through the casing 11, is equipped with a sludge discharge valve 25 that cooperates with the spiral rod 26 to discharge sludge.

[0039] In this embodiment, the screw rod 26 is used to guide the mud and water that has settled in the sludge collection box 21 into the sludge discharge port 24, so as to avoid the sludge from accumulating and clogging in the sludge collection box 21 and improve its sewage discharge efficiency.

[0040] Please refer to Figure 5 and Figure 6 A partition 23 for skimming wastewater is formed between the sludge collection tank 21 and the magnetic filter tank 22. A magnetic separator 27 that extends directly into the magnetic filter tank 22 is plugged into the outside of the magnetic filter tank 22. An outlet is formed on the outside of the bottom of the magnetic filter tank 22, which is connected to the water storage component 4 via an external lift pump 6. A cover 28 is provided on the top of the sludge collection tank 21.

[0041] In this embodiment, the wastewater collected in the separation chamber 31 is directly introduced into the water in the sludge collection tank 21, causing the heavier particles to sink. As the water level rises, the recyclable water containing fewer particles overflows the partition 23 and enters the magnetic separator 27, where the magnetic separator 27 filters out the metal dust contained inside.

[0042] For details, please refer to Figure 7 The gas-water separation component 3 includes a separation chamber 31 that can contain dust-containing gas. The bottom of the separation chamber 31 is tapered to form a funnel-shaped flow guide structure that leads into the sludge collection tank 21. Inside the separation chamber 31, there is a spray component 35 that is connected to the water storage component 4 and can spray a water curtain.

[0043] In one embodiment, the spray assembly 35 has multiple sets of atomizing nozzles in the separation chamber 31 to form a water curtain that completely covers the incoming dust-laden gas, washing away the dust in the gas and achieving a dust removal effect.

[0044] Please refer to Figure 7 The gas-water separation assembly 3 also includes a demisting assembly 32 arranged in layers inside the separation chamber 31. A gap for gas passage is formed between the two sides of the demisting assembly 32 and the inner wall of the separation chamber 31. A tangential plate 33 is provided on the inner wall of the separation chamber 31 between two adjacent layers of demisting assemblies 32, and the gap between the edge of the tangential plate 33 and the edge of the demisting assembly 32 forms a misaligned fit. The outer wall of the separation chamber 31 is integrally provided with a connecting port 34 for connecting with the dust suction head 18 through the housing 11. The connecting port 34 in the separation chamber 31 is located below the demisting component 32, and a fan 36 for extracting the gas inside the separation chamber 31 is installed on the top of the separation chamber 31.

[0045] In this embodiment, the tangential plate 33 and the demisting component 32 work in an alternating manner to cause tangential impacts on the water mist carried in the wind absorbed by the fan 36, which then aggregates into water droplets, thus achieving the effect of water-air separation. In addition, the fan 36 is a DC brushless fan and is waterproofed. In other embodiments, a demisting device can also be directly installed in the upper layer of the separation chamber 31, which can achieve the effect of this embodiment.

[0046] For details, please refer to Figure 8 The water storage component 4 includes a water storage tank 41 for holding clean water and circulating water. A plug-in filter cartridge 43 is provided at the inlet of the water storage tank 41, and the circulation pipe between the water storage tank 41 and the sludge collection component 2 is connected to the inlet of the filter cartridge 43.

[0047] In one embodiment, clean water is stored in the water storage component 4. During the dust removal process, the returned and filtered wastewater is gradually reintroduced into the water storage component 4 to achieve the effect of water circulation, increase the operating time of the dust removal device, and improve the dust removal efficiency.

[0048] Please refer to Figure 5 and Figure 8 The top of the water storage tank 41 has a water inlet 42 for hanging the filter cartridge 43, and a drain pipe 44 is provided inside the water storage tank 41, which can be connected to the dirt collection component 2 through a pipe. The drain pipe 44 is directly connected to the water inlet 42. A tank cover 45 is installed on the top of the water inlet 42. An outlet is formed on the outer side of the bottom of the water storage tank 41, which is connected to the air-water separation component 3 through an external high-pressure water pump 5.

[0049] In this embodiment, the booster pump 6 is used to send the pre-treated water in the magnetic filter box 22 into the filter cartridge 43, so that the water filtered by the filter cartridge 43 can directly enter the water storage tank 41 for later use. In addition, the filter cartridge 43 adopts a modular design and can be replaced directly by opening the box cover 45, avoiding the filter cartridge 43 from being blocked and affecting the circulation effect.

[0050] In this embodiment, the filter cartridge 43 employs a multi-stage filtration design from coarse to fine (e.g., stainless steel filter screen + PP cotton filter with 20-micron precision). The filter cartridge uses a quick-connect interface, which allows workers to quickly replace it without tools.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable water-cooled dust removal device for a sealed compartment, comprising a vehicle body (1) that carries and houses multiple sets of components, characterized in that: The interior of the vehicle body (1) is provided with a sewage collection component (2) for collecting sewage, and a water storage component (4) for completing water circulation is stacked on the sewage collection component (2). A gas-water separation component (3) for spraying water curtain to treat dust-containing gas is provided on the side of the water storage component (4). The vehicle body (1) includes a base (13) that can be pushed in a closed compartment, the sludge collection assembly (2) is mounted on the base (13), and the base (13) is covered with a housing (11) for integrating and accommodating the sludge collection assembly (2). The sludge collection assembly (2) includes a sludge collection tank (21) for preliminary treatment of sewage. The bottom of the sludge collection tank (21) is provided with a sludge discharge port (24) extending through the housing (11) to the outside for discharging settled sludge. The side of the sludge collection tank (21) away from the sludge discharge port (24) is extended to form a magnetic filter box (22) for separating metal dust. The gas-water separation component (3) includes a separation chamber (31) that can contain dust-containing gas. The bottom of the separation chamber (31) is narrowed to form a funnel-shaped flow guide structure that flows into the sludge collection box (21). A spray component (35) that can spray water curtain is provided inside the separation chamber (31) and is connected to the water storage component (4). The water storage component (4) includes a water storage tank (41) for holding clean water and circulating water. A plug-in filter cylinder (43) is provided at the inlet of the water storage tank (41), and the circulation pipe between the water storage tank (41) and the dirt collection component (2) is connected to the inlet of the filter cylinder (43).

2. The portable water-cooled dust removal device for a sealed compartment according to claim 1, characterized in that, The vehicle body (1) also includes a top shell (12) stacked on top of the housing (11), and the tops of the gas-water separation component (3) and the water storage component (4) located on top of the dirt collection component (2) are both housed in the top shell (12).

3. The portable water-cooled dust removal device for a sealed compartment according to claim 2, characterized in that, The top shell (12) includes a shell (121) integrally disposed on the top of the housing (11). The interior of the shell (121) is provided with an air guide box (122) for cooperating with the top of the air-water separation component (3) to complete the air discharge. The air guide box (122) and the side of the shell (121) are provided with an exhaust port for connecting the air-water separation component (3). The top of the shell (121) is equipped with a cover plate (123).

4. The portable water-cooled dust removal device for a sealed compartment according to claim 2, characterized in that, The housing (11) located in front of the top shell (12) has a controller (14) embedded in it as the control center, and a power supply compartment (15) that can be used to accommodate batteries and wiring is isolated in the housing (11) below the controller (14).

5. The portable water-cooled dust removal device for a sealed compartment according to claim 4, characterized in that, The front and rear ends of the housing (11) are respectively provided with a lifting handle (16) and a push rod (17). The lifting handle (16) and the push rod (17) work together with the housing (11) to act on the base (13) to drive it to travel in the sealed compartment.

6. The portable water-cooled dust removal device for a sealed compartment according to claim 2, characterized in that, A vacuum head (18) is attached to the side of the housing (11), and the end of the vacuum head (18) is connected to the air-water separation assembly (3) via a hose.

7. The portable water-cooled dust removal device for a sealed compartment according to claim 6, characterized in that, The gas-water separation component (3) further includes a demisting component (32) arranged in layers inside the separation chamber (31). A gap for gas passage is formed between the two sides of the demisting component (32) and the inner wall of the separation chamber (31). A tangential plate (33) is provided on the inner wall of the separation chamber (31) between two adjacent layers of the demisting components (32), and the gap between the edge of the tangential plate (33) and the edge of the demisting component (32) forms a misaligned fit. The outer wall of the separation chamber (31) is integrally provided with a connection port (34) for connecting with the dust suction head (18) through the housing (11). The connection port (34) in the separation chamber (31) is located below the demisting component (32), and a fan (36) for extracting the gas inside the separation chamber (31) is installed on the top of the separation chamber (31).

8. The portable water-cooled dust removal device for a sealed compartment according to claim 1, characterized in that, The inside of the sludge collection box (21) is rotatably equipped with a screw rod (26) for direct access to the sludge inlet (24), and the contraction port at the bottom of the separation chamber (31) is suspended above the screw rod (26). The bottom of the sludge outlet (24) passing through the machine casing (11) is equipped with a sludge discharge valve (25) that cooperates with the screw rod (26) to discharge sludge.

9. The portable water-cooled dust removal device for a sealed compartment according to claim 8, characterized in that, A partition (23) for skimming wastewater is formed between the sludge collection tank (21) and the magnetic filter tank (22). A magnetic separator (27) that extends directly into the magnetic filter tank (22) is plugged into the outside of the magnetic filter tank (22). An outlet is formed on the outside of the bottom of the magnetic filter tank (22) that is connected to the water storage assembly (4) via an external lift pump (6). A cover (28) is provided on the top of the sludge collection tank (21).

10. The portable water-cooled dust removal device for a sealed compartment according to claim 1, characterized in that, The top of the water storage tank (41) has a water inlet (42) for hanging the filter cartridge (43), and a drain pipe (44) is provided inside the water storage tank (41) that can be connected to the dirt collection component (2) through a pipe. The drain pipe (44) is directly connected to the water inlet (42). A tank cover (45) is installed on the top of the water inlet (42). An outlet is formed on the outer side of the bottom of the water storage tank (41) that is connected to the air-water separation component (3) through an external high-pressure water pump (5).

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