Elastic compensation jet device as well as use method and design method thereof

Abstract

The invention discloses an elastic compensation jet device and a using method and a design method thereof, and belongs to the technical field of high-speed jet. In order to solve the problems that a traditional jet device and a use method are seriously limited in use scene, the advantages of jet fluid cannot be played when the traditional jet device is used on an uneven bearing surface, and the speed of jet flow is seriously attenuated due to the influence of air resistance, the invention provides the elastic compensation jet device, and a jet part is connected with a mobile carrier through an elastic compensation structure; according to the using method, when the movable carrier drives the jet flow part to work through the elastic compensation structure, high-speed fluid sprayed out of the jet flow nozzle is in a film shape. A series of defects and limitations of low efficiency, poor effect, large fluid flow, easy abrasion of a working surface, limited use scene and the like of a traditional jet mode are overcome, and the beneficial effects of high efficiency and high-standard jet are achieved.

Description

Technical Field

[0001] This invention belongs to the field of high-speed jet technology, specifically a jet device, a method of using the jet device, and a design method for the jet device. Background Technology

[0002] Currently, many industrial and civilian sectors require the use of jet technology, including liquid jetting, gas jetting, and gas-liquid mixed jetting. Liquid jetting includes high-pressure water jetting for cleaning object surfaces, paint or coating spraying for surface coating, lubricant (or cutting fluid) spraying for lubricating and cooling mechanical equipment, adhesive spraying for bonding materials, and cleaning agent spraying for removing oil or impurities. Gas jetting methods can be used in various industrial and laboratory applications, mainly by rapidly ejecting gases (air, nitrogen, carbon dioxide, oxygen, ammonia, chlorine, hydrogen, etc.) through high-pressure equipment or nozzles. For example, hydrogen is sprayed for high-temperature flame applications, such as metal cutting and welding. The inertia and impact force of gas-liquid mixed jetting can increase the kinetic energy of the ejected gas and change the characteristics of the jetting, such as improving impact force, penetration, and scattering effect.

[0003] The common problem with the above liquid jet, gas jet, and gas-liquid mixed jet technologies is that when the surface to be treated is a rigid surface, the positional distance between the jet nozzle and the surface to be treated must be completely controllable or far enough. Otherwise, the hard contact between the two during operation makes it difficult to ensure the safety of the jet nozzle or the surface to be treated. However, existing technologies cannot accurately control the distance between the two. Therefore, the problems of low cleaning efficiency, poor effect, and high water consumption caused by the "distance" problem are also the main reasons that limit the further promotion and application of jet technology in glass curtain walls, masonry walls, etc. In addition, existing jet cleaning methods have a significant limitation: they are more suitable for outdoor, open environments where there is no fear of sewage splashing, such as street cleaning, but not for common indoor cleaning scenarios such as floors and walls. The indoor use of existing jet cleaning is also limited to relatively enclosed environments where there is no fear of sewage splashing, such as car washing. Furthermore, existing cleaning devices require a large volume of water, and can generally only rinse away surface dust. For stubborn dirt, repeated rinsing is necessary to achieve a good effect. During repeated rinsing, only a small percentage of the water is actually effective, with most of the water being used to repeatedly rinse areas that have already been cleaned. This results in a significant waste of clean water. Moreover, this cleaning method requires direct access to tap water or a large water tank, making its use conditions very limited.

[0004] In addition, regarding gases, for example, when using hydrogen jet welding, it is necessary to ensure that the distance between the jet nozzle and the object to be welded is stable. If the welding environment cannot provide a stable flat bottom surface for the jet equipment, the uneven bottom surface will cause the distance between the jet nozzle and the weld to be unstable, making it impossible to control the welding quality and causing great product quality risks.

[0005] In solar power plants, the solar collector reflector is the core equipment for collecting solar energy. It concentrates sunlight at a focal point to heat the heat transfer medium to a high temperature of several hundred degrees Celsius, and then transmits the heat to the power generation equipment for power generation or stores the heat for use when there is no sunshine. When clean, the reflectivity of the reflector is generally over 93%. However, in actual use, the reflectivity gradually decreases due to the accumulation of dust and sand. Therefore, it needs to be cleaned cyclically using cleaning trucks, typically every 1-3 weeks. Because a solar thermal power plant usually has a large number of reflectors, several cleaning trucks need to continuously clean them at night when power generation is not in operation, and a single cycle still takes 1-3 weeks. After this cycle, the reflectivity of the reflector generally drops below 80%, and if there is wind and sand, it can drop below 70% or even lower. Taking a 100MW 10-hour energy storage solar thermal power plant as an example, with an annual power generation revenue of 400 million yuan, if the annual average reflectivity of the reflector is 3% lower, the annual power generation loss will reach 12 million yuan. This shows that the cleanliness of the reflector has a significant impact on the solar thermal power plant. Currently, cleaning of concentrated solar power (CSP) plants utilizes specialized cleaning vehicles. These vehicles are equipped with hydraulic arms, each end of which is fitted with brushes and high-pressure water nozzles. When cleaning the reflectors, the vehicle's movement drives the hydraulic arms, propelling the brushes across the mirror surface. The brushes are long, rotating perpendicular to the mirror, typically positioned 0.2-0.4 meters away. The high-pressure water nozzles are approximately 0.6 meters from the reflector. This distance is crucial because the vehicle's movement can cause the hydraulic arms to sway, preventing impact damage to the reflectors. Although the cleaning vehicle uses a hydraulic suspension chassis, this only passively mitigates the swaying caused by vehicle vibrations; it cannot completely eliminate the impact. Because the cleaning vehicle currently only cushions the swaying caused by vehicle vibrations through its hydraulic suspension system, it cannot completely eliminate the influence of hydraulic arm swaying on the cleaning platform, leading to a series of issues affecting the cleaning process, as follows:

[0006] 1. To avoid the impact of the high-pressure water nozzle on the mirror surface, the distance between the two must be controlled to be more than half a meter. This inevitably leads to a significant decrease in speed and energy during the high-speed fluid jet process due to air resistance. At this time, when the high-pressure water falls on the mirror surface, it no longer has "high pressure" but is just ordinary "spraying". The advantages of high-pressure water cleaning are gone. Therefore, in order to increase the cleaning effect, the water consumption must be increased. When a large amount of water is used to cover the mirror surface, the reflectivity is even lower than 90%, and the water consumption reaches 0.5-1.3L per square meter.

[0007] 2. The brush must be kept at a certain distance from the mirror surface. The brushing relies on the rotating force of the 0.2-0.4 meter long bristles. The force between the brush and the mirror surface is insufficient, so it is necessary to brush repeatedly for a sufficiently long time to ensure the cleaning effect. Therefore, the brushing efficiency is low. Generally, the brush cleaning speed is only 0.5-1 km / h. The length of one circuit in a typical trough solar thermal power plant is about 600 meters, which takes about 1 hour to clean. For a 100MW 10-hour energy storage power plant, which is cleaned for 8-10 hours every night, a cleaning truck needs more than a month to clean once, which is very inefficient.

[0008] 3. High-pressure water spraying consumes a lot of water. If the spraying speed is 3.5 km / h, then 6 loops will be washed per hour, which will consume about 10 tons of water. However, the water capacity of the cleaning vehicle is generally less than 10 tons. Therefore, water needs to be added every tens of minutes, and each time water is added, it takes 20-30 minutes. That is, one-third of the working time is spent adding water, which greatly reduces the actual spraying cleaning efficiency.

[0009] 4. For the existing cleaning water recycling system, the traditional cleaning truck requires a lot of water to clean a 100MW energy storage power station for 10 hours. One circuit requires nearly 2 tons of water, and for more than 400 circuits, it requires 700 to 800 tons of water. Generally, solar thermal power plants are built in arid areas with good sunshine, so the lack of a water recycling system is a big waste.

[0010] 5. The cleaning truck uses several large brushes for cleaning. Each brush needs to be equipped with a drive motor, which is costly and heavy. The brushes are placed at the end of the hydraulic arm of the cleaning truck, which makes the hydraulic arm bear a large load. Generally, a crane hydraulic arm of nearly 2 tons is needed to support the weight of several brushes and their motors, which also makes the cost of the hydraulic arm high.

[0011] 6. To cushion road bumps, the cleaning truck uses a hydraulic suspension system, which increases the cost by more than 500,000 yuan and only provides passive cushioning.

[0012] 7. The spray and brush positions are not set properly. During the cleaning process, the wastewater from the cleaned mirrors at the top gradually flows downwards, and the lower mirrors that have already been cleaned are often re-contaminated by the wastewater left at the top, resulting in substandard cleaning.

[0013] Based on the above problems, it is urgent to improve the structure and jetting method of the current jet (high-pressure water) device in order to improve jetting efficiency, enhance jetting effect, reduce jetting cost, and expand the application scenarios of jetting technology. Summary of the Invention

[0014] In view of the problems that existing jet devices and methods of use have, such as severely limited application scenarios, inability to take advantage of jet fluid when used on uneven support surfaces, and severe velocity attenuation of the jet due to air resistance, this invention provides a jet device, a method of using the jet device, and a design method for the jet device, which can better solve the above problems.

[0015] The objective is achieved through the following scheme.

[0016] The present invention provides an elastically compensated jet device, comprising a movable carrier and a jet section connected by an elastically compensated structure. The jet section includes a jet nozzle, the rear end of which is connected to a fluid pipeline. The elastically compensated structure is composed of a spring and a rigid structure connected to its two ends.

[0017] Preferably, the spring is a leaf spring.

[0018] Preferably, there are at least two leaf springs, and the deformation planes of the two leaf springs are not parallel.

[0019] Preferably, the elastic compensation structure is a piston-sleeve structure, that is, the rigid structure is a piston and a sleeve that are nested together, and the spring is placed between the piston and the sleeve.

[0020] Preferably, the flow channel at the front end of the jet nozzle 1 has two mutually parallel surfaces.

[0021] Preferably, the length of the parallel surface flow channel at the front end of the nozzle is greater than or equal to the width of the nozzle 1.

[0022] Preferably, it further includes a compressed gas nozzle fixed to the jet nozzle, the rear end of which is connected to a compressed gas pipeline; the front flow channel of the compressed gas nozzle orifice has two mutually parallel surfaces.

[0023] Preferably, there are one or two compressed gas nozzles, which are disposed on one side or distributed on both sides of the jet nozzle; the flow channel at the front end of the compressed gas nozzle is parallel to the flow channel at the front end of the jet nozzle.

[0024] Preferably, the width of the jet nozzle orifice is less than 2 mm, and / or the width of the compressed gas nozzle orifice is less than 2 mm.

[0025] Preferably, the flow channel at the front end of the jet nozzle has a uniform cross-section structure.

[0026] Preferably, a compressed gas nozzle is provided circumferentially on the outer side of the jet nozzle, and the rear end of the compressed gas nozzle is connected to a compressed gas pipeline; the flow channel at the front end of the compressed gas nozzle orifice has a uniform cross-section structure.

[0027] Preferably, the nozzle of the jet nozzle has a constricted nozzle structure.

[0028] Preferably, the nozzle of the compressed gas nozzle has a constricted nozzle structure.

[0029] Preferably, the nozzle of the jet nozzle and / or the nozzle of the compressed gas nozzle is a V-shaped flared structure with an elliptical opening.

[0030] Preferably, the jet nozzle and the compressed gas nozzle are an integral structure, collectively referred to as a "gas-liquid nozzle". The gas-liquid nozzle is mounted on a mounting base, and the angle between the gas-liquid nozzle and the mounting base is adjustable. The mounting base is provided with a first fluid channel and a first compressed gas channel, and the jet nozzle is provided with a second fluid channel and a second compressed gas channel. The second fluid channel on the jet nozzle is connected to the first fluid channel on the mounting base, and the second compressed gas channel on the compressed gas nozzle is connected to the first compressed gas channel on the mounting base.

[0031] Preferably, the angle-adjustable structure specifically comprises a spherical rear end of the gas-liquid nozzle and a spherical cavity provided on the mounting base that is adapted to the spherical shape of the gas-liquid nozzle.

[0032] Preferably, the angle-adjustable structure specifically comprises a cylinder at the rear end of the gas-liquid nozzle, and a cylindrical cavity on the mounting base that is adapted to the cylinder of the gas-liquid nozzle.

[0033] Preferably, the outlet of the first fluid channel and / or the first compressed gas channel on the mounting base is a flared trough structure.

[0034] Preferably, the rear end of the jet nozzle and / or the rear end of the compressed gas nozzle is a flared groove structure.

[0035] Preferably, it also includes a baffle, which is connected to the front end of the jet nozzle from the rear end of the jet nozzle in a closed or semi-closed manner.

[0036] Preferably, the jet section further includes a brush plate and a cleaning seat, wherein the brush plate and the jet nozzle are both fixed on the cleaning seat, and the jet nozzle is located between the brush plate and the elastic compensation structure.

[0037] Preferably, a recovery tank for collecting waste liquid is provided below the jet nozzle, and the recovery tank is provided with at least two layers of filter screens to filter the waste liquid.

[0038] The present invention also provides another elastically compensated jet device, comprising a movable carrier and a jet section connected by an elastically compensated structure. The jet section includes a jet nozzle, the rear end of which is connected to a fluid pipeline. The elastically compensated structure includes two sets of parallel rods connected by a pivot to form a parallelogram structure. A tension spring is connected at the diagonal of the parallelogram structure. The two horizontal sides of the parallelogram structure are a first cantilever located below and a second cantilever located above, respectively. The first cantilever is connected to the jet section, and the second cantilever is connected to the movable carrier.

[0039] Preferably, the elastic compensation structure further includes a proximity switch and / or a displacement sensor, which are disposed on the four sides of the parallelogram structure or on the first or second cantilever.

[0040] The present invention also provides a method of using a jet device. When the jet device of any of the foregoing is used, the moving carrier drives the jet unit to work through the elastic compensation structure. The high-speed fluid ejected from the jet nozzle is in the form of a thin film, and the range between the jet nozzle and the incident position on the working surface is less than 0.3 meters.

[0041] Preferably, the thin-film high-speed fluid is enveloped by a synchronous high-speed airflow.

[0042] Preferably, when using the jet device for cleaning, the brush plate of the jet section moves forward against the working surface to scrape the working surface that has been washed by the high-speed water flow.

[0043] The present invention also provides a design method for a jet device, which is designed for any of the aforementioned jet devices. The elastic displacement L between the rigid structures at both ends of the spring of the elastic compensation structure is greater than or equal to the displacement L0 of the maximum disturbance sway in the direction perpendicular to the working surface generated by the moving carrier when moving the jet. The elastic stiffness K of the elastic compensation structure in the direction perpendicular to the working surface should satisfy its elastic force F = K·L, which is less than or equal to the difference between the maximum allowable force Fmax and the minimum allowable force Fmin between the jet part and the working surface, i.e., F ≤ Fmax - Fmin.

[0044] This invention overcomes a series of shortcomings and limitations of traditional jet methods, such as low efficiency, poor effect, large fluid flow rate, easy wear on the working surface, and limited application scenarios, as detailed below:

[0045] The jet section of this invention is connected to the moving carrier through an elastic compensation structure, which allows the jet section to automatically adapt to the interference and shaking of the moving carrier. It can also keep the jet section at a very small working distance from the working surface, so that the fluid remains under high pressure when it falls onto the working surface, or make the jet section in close contact with the working surface, thereby forming a stable and efficient cleaning, adhesion and cutting effect.

[0046] When this invention is used in cleaning scenarios, it can achieve the cleaning effect that requires a large amount of water spraying with clean water using existing technologies with very little water. Furthermore, when repeatedly rinsing stubborn stains, the high-pressure water membrane can save a lot of water and avoid the waste of clean water caused by large water jets.

[0047] This invention employs high-speed gas-encapsulated jet fluid technology, which can greatly reduce the speed attenuation or liquid vaporization problems caused by air resistance in liquid jets. It can achieve high-standard jet effects with less ultra-thin high-speed liquid fluid, which can improve cleaning efficiency and prevent paint and other adhering fluids from vaporizing during the spraying process. In addition, the high-speed airflow can quickly dry water stains or painted surfaces left after cleaning, so that work surfaces that are not suitable for water immersion can also be cleaned using this device.

[0048] When using the cleaning function of this invention, the baffle can prevent sewage from splashing and flowing, and sewage can be recycled in real time, thereby achieving precise control of the area being cleaned and expanding the application scenarios of jet technology. Therefore, this invention can be widely used in outdoor glass curtain walls and other scenarios that lack direct access to tap water or are not suitable for carrying large water tanks, and can be further applied to indoor relatively enclosed spaces and other cleaning scenarios or fields with high requirements.

[0049] This invention can replace existing cleaning robots and floor scrubbers for use in homes, offices, and commercial spaces. Because this patent eliminates the roller brush, it greatly saves on the machine's self-cleaning process, reducing people's workload. At the same time, since there is no roller brush to "hide dirt and grime," it avoids secondary pollution, thus further improving cleaning standards.

[0050] The jet device of this invention adopts a highly integrated assembly line-like cleaning process, including rinsing, brushing, blowing, and air drying, which can achieve the comprehensive benefits of high efficiency, high standards, and water conservation.

[0051] This invention can be applied to mirror cleaning in uneven ground environments such as solar thermal power plants and photovoltaic power plants. In these environments, the mobile carrier is a power plant cleaning vehicle. An elastic compensation structure is installed between the cleaning vehicle and the jet nozzle. During operation, the elastic compensation structure can buffer the impact of the cantilever on the reflective mirror caused by the swaying of the cleaning vehicle. Therefore, with the addition of the elastic compensation structure, the jet nozzle of the cleaning vehicle can contact the reflective mirror at a very small distance or even zero distance during operation, allowing the high-pressure water to still exert its "cutting" effect of high-pressure cleaning. This significantly improves the cleaning effect while also saving a large amount of water.

[0052] By employing the design method of the jet device described in this invention, the spring can be controlled to always be in a deformed state. Furthermore, the force transmitted from the spring's deformation to the jet section, applied to the reflective mirror being cleaned, is kept within an acceptable range, preventing damage to the mirror due to excessive force while ensuring the allowable pressure required for cleaning the mirror. Therefore, the elastic compensation structure can fully adapt to the impact on the reflective mirror caused by the unstable position and posture of the hydraulic arm of the cleaning vehicle, thus ensuring both no damage to the mirror surface and guaranteed cleaning efficiency and effectiveness. Attached Figure Description

[0053] Figure 1 This is a three-dimensional structural diagram of the elastic compensation jet device of the present invention;

[0054] Figure 2 This is a schematic diagram of the planar structure of the elastic compensation jet device of the present invention;

[0055] Figure 3 This is a schematic diagram of a connection structure between the elastic compensation structure and the jet section described in Embodiment 1;

[0056] Figure 4 yes Figure 3 Top view;

[0057] Figure 5 This is a schematic diagram illustrating another connection relationship between the elastic compensation structure and the jet section described in Embodiment 1;

[0058] Figure 6 yes Figure 5 Top view;

[0059] Figure 7 This is a schematic diagram of the structure of the jet nozzle orifice front flow channel as described in Embodiment 1, which is a parallel plane;

[0060] Figure 8 This is a schematic diagram of the structure of the jet nozzle orifice front flow channel as described in Example 1, which is a parallel curved surface;

[0061] Figure 9 This is a schematic diagram of the flow channel structure at the front end of the jet nozzle and the compressed gas nozzle fixed on one side as described in Embodiment 1;

[0062] Figure 10 This is a schematic diagram of the flow channel structure at the front end of the jet nozzle and the compressed gas nozzle fixed on both sides as described in Embodiment 1;

[0063] Figure 11 This is a schematic diagram of the velocity field of high-speed water flow in a relatively still air environment;

[0064] Figure 12 This is a schematic diagram showing the relationship between the distance the water flows forward and the speed of the water flow;

[0065] Figure 13 This is a schematic diagram showing the relationship between water flow velocity and range;

[0066] Figure 14 This is a schematic diagram illustrating the principle of water flow and air jet.

[0067] Figure 15 This is a schematic diagram of the connection structure between the elastic compensation structure of the piston sleeve structure using a compression spring and the jet section as described in Embodiment 2;

[0068] Figure 16 This is a schematic diagram of the connection structure between the elastic compensation structure of the piston sleeve structure using a tension spring and the jet section as described in Embodiment 2;

[0069] Figure 17 This is a schematic diagram of the flow channel structure at the front end of the jet nozzle with a circular cross-section as described in Example 3;

[0070] Figure 18 This is a schematic diagram of the flow channel structure at the front end of the nozzle, where compressed gas nozzles are arranged circumferentially on the outside of the jet nozzle as described in Embodiment 3.

[0071] Figure 19 This is a schematic diagram of the flow channel structure at the front end of the nozzle where a compressed gas nozzle is provided in the circumferential part outside the jet nozzle, as described in Embodiment 3.

[0072] Figure 20 This is a schematic diagram of the flow channel structure of the jet nozzle and the compressed gas nozzle nozzle front end fixed on one side as described in Embodiment 1, wherein the flow channel of the "non-nozzle front end" is a constricted structure.

[0073] Figure 21 This is a schematic diagram of the flow channel structure of the jet nozzle and the compressed gas nozzle fixed on both sides of it as described in Embodiment 4, wherein the nozzle of the jet nozzle is a constricted structure.

[0074] Figure 22 This is a schematic diagram of the gas-liquid nozzle structure described in Example 5;

[0075] Figure 23 yes Figure 22 CC-direction sectional view;

[0076] Figure 24 yes Figure 22 DD section view;

[0077] Figure 25 This is a schematic diagram of the installation structure of the gas-liquid nozzle in the mounting base as described in Embodiment 5, wherein the rear end of the gas-liquid nozzle is a spherical body;

[0078] Figure 26 yes Figure 25 BB-direction sectional view;

[0079] Figure 27 yes Figure 25 CC-direction sectional view;

[0080] Figure 28 This is a schematic diagram of the installation structure of the gas-liquid nozzle in the mounting base as described in Example 5, wherein the rear end of the jet nozzle is a flared groove structure;

[0081] Figure 29 yes Figure 28 BB-direction sectional view;

[0082] Figure 30 This is a schematic diagram of the installation structure of the gas-liquid nozzle in the mounting base as described in Embodiment 5, wherein the rear end of the gas-liquid nozzle is a cylinder;

[0083] Figure 31 yes Figure 30 BB-direction sectional view;

[0084] Figure 32 yes Figure 30 CC-direction sectional view;

[0085] Figure 33 This is a schematic diagram of the gas-liquid nozzle structure described in Example 5, wherein the nozzle orifice of the jet nozzle is a constricted structure;

[0086] Figure 34 yes Figure 33 DD section view;

[0087] Figure 35 yes Figure 33 View from direction A;

[0088] Figure 36 This is a schematic diagram of the jet section and the deflector structure described in Embodiment 6;

[0089] Figure 37 yes Figure 36 BB cross-section;

[0090] Figure 38 This is a schematic diagram showing the fit between the baffle and the jet nozzle;

[0091] Figure 39 This is a schematic diagram of the installation positions of the baffle and the jet nozzle;

[0092] Figure 40 This is a schematic diagram of the recycling bin structure described in Example 7;

[0093] Figure 41 This is a schematic diagram of the structure of the present invention as described in Embodiment 9, wherein the elastic compensation structure is a parallelogram structure;

[0094] Figure 42 This is a schematic diagram of the working structure of the elastic compensation structure and the jet section 21.

[0095] Figure 43 This is a schematic diagram of another structure of the present invention as described in Example 9.

[0096] The components include: jet nozzle 1, mounting base 2, compressed gas nozzle 4, baffle 9, recovery pipe 10, recovery box 11, constriction structure 12, V-shaped flare groove 13, nozzle 14, jet nozzle nozzle front end flow channel 15, parallel plane 15-1, parallel curved surface 15-2, compressed gas nozzle nozzle front end flow channel 16, "non-nozzle front end" flow channel 17, fluid pipeline 18, jet section 21, leaf springs 22, 23, 27, 28, cantilever 24, 25, connecting rod 26, support arm 30, sleeve 32, spring 33, piston 34, tension spring 35, first cantilever 36, second cantilever 37, and so on. Arm 37, proximity switch 38, displacement sensor 39, moving carrier 40, liquid collector 42, filter screen 43, inlet pipe 44, outlet pipe 45, clear liquid area 46, dirty liquid area 47, elastic compensation structure 50, first flared settling tank 51, second flared settling tank 52, third flared settling tank 53, first fluid channel 61, second fluid channel 62, first compressed gas channel 71, second compressed gas channel 72, cover plate 91, side end plate 92, side plate 93, liquid recovery port 94, working surface 102, cleaning seat 211, brush plate 212, high-speed thin film water flow 231, flushing water belt 232. Detailed Implementation

[0097] This invention primarily addresses the issue of applicable scenarios for jet spraying devices. The technology is applicable to jet spraying on uneven supporting surfaces, such as mirror cleaning of uneven ground in solar thermal power plants and photovoltaic power plants, spraying paint or coatings onto furniture or building exteriors, or using hydrogen for jet welding. All of these applications suffer from unstable distances between the jet nozzle and the target object. If the jet environment cannot provide a stable flat surface for the jet equipment, the unstable distance between the nozzle and the target object's working surface directly affects the jet quality. Furthermore, wall-climbing robots also face similar problems when working on uneven wall surfaces (e.g., for cleaning). These issues directly affect the effectiveness of jet spraying technology (e.g., for cleaning, spraying, cutting, etc.) and even the quality of the target product.

[0098] This invention greatly expands the applicable scenarios of jet devices. The jet device described in this invention is suitable for liquid jets, gas jets, and gas-liquid mixed jets; that is, the fluid in this embodiment includes gas, liquid, or a mixture of both. The working surface mentioned in this invention refers to the surface being jetted.

[0099] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0100] The connections mentioned in this invention are divided into fixed connections and detachable connections. Fixed connections (i.e., non-detachable connections) include, but are not limited to, conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include, but are not limited to, conventional disassembly methods such as threaded connections, snap-fit ​​connections, pin connections, and hinged connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can always be found to achieve the function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for fixed connections, and a hinged connection can be chosen for detachable connections.

[0101] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0102] Furthermore, in the following descriptions of various embodiments, all aspects not explicitly stated to differ from other embodiments are identical. That is, structures not described in the current embodiment can be combined with some or all of the structures in other embodiments, but are not repeated for the purpose of saving space.

[0103] Example 1

[0104] This embodiment is an elastically compensated jet device, referencing... Figure 1 , Figure 2 (This diagram is for illustrative purposes only and does not show the full structure.)

[0105] Reference Figure 2 It includes a mobile carrier 40 and a jet section 21 connected by an elastic compensation structure 50. The elastic compensation structure 50 is composed of a spring and rigid structures connected to its two ends. During operation, the two rigid structures of the elastic compensation structure undergo elastic deformation in the direction perpendicular to the working surface 102, and try not to undergo elastic deformation in the direction parallel to the working surface 102 (i.e., the direction of movement).

[0106] The mobile carrier 40 includes any object that can move the jet section 21, such as... Figure 1 and Figure 2 The mechanical vehicle shown can also be a handcart, floor scrubber, robot, drone, etc., and can also be moved by hand, all of which fall within the scope of the mobile carrier described in this invention.

[0107] The jet section 21 includes a jet nozzle 1, as shown in the reference section. Figure 1 The rear end of the jet nozzle 1 is connected to the fluid pipeline 18.

[0108] The spring described in this embodiment is a leaf spring, and there are at least two leaf springs, with the deformation planes of the two leaf springs being non-parallel. (Refer to...) Figure 1 , Figure 3 , Figure 4 The mobile carrier 40 is connected to the support arm 30, which in turn connects to cantilever arms 24 and 25. Cantilever arm 24 is connected to one end of leaf spring 23, and cantilever arm 25 is connected to one end of leaf spring 22. The other ends of leaf springs 22 and 23 are connected to one end of connecting rod 26, and the other end of connecting rod 26 is connected to the jet section 21 (the support arm 30, cantilever arm 24, cantilever arm 25, and connecting rod 26 are all rigid structures). Leaf springs 22 and 23 are symmetrically installed about the connecting rod 26. Leaf springs 22 and 23 can undergo elastic deformation in the y and z planes shown in the figure, but not in the x-axis direction (the direction of movement and cleaning). In this case, the direction of elastic deformation between cantilever arms 24 and 25 and connecting rod 26 is perpendicular to the working surface 102 of the jet section 21. During operation, if the mobile carrier 40 is disturbed and shakes, causing the support arm 30 to shake, the elastic deformation of leaf springs 22 and 23 can reduce the shaking interference in the jet section 21.

[0109] Figure 3 , Figure 4 The leaf springs 22 and 23 shown deform in the same yz plane. In practical applications, there can be three, four, five, six, or even more leaf springs (depending on the weight of the jet section, the thickness of the leaf spring material, and the required elastic deformation accuracy). When there are three or more leaf springs, it is preferable to arrange them evenly in the circumferential direction (with the deformation planes not parallel). This way, the forces of the multiple leaf springs in the moving cleaning direction cancel each other out, ultimately achieving the desired effect. Figure 3 , Figure 4 As shown, elastic deformation occurs in the y and z planes, but not in the x-axis direction, i.e., the direction of movement and cleaning. This reduces the swaying interference of the moving carrier 40 on the jet section 21, ensuring the jet section 21 operates normally and stably when the moving carrier moves in uneven environments. (The aforementioned number of leaf springs refers to the number of leaf springs in different deformation planes. In the same deformation plane, the number of leaf springs can be one or multiple overlapping ones, which will not be elaborated here.)

[0110] As Figure 5 , Figure 6 shown, the number of leaf springs is four (i.e., leaf springs 22, 23, 27, 28). One end of leaf springs 22 and 23 is respectively connected to cantilever 25 and cantilever 24, and the other end is connected to connecting rod 26; one end of leaf springs 27 and 28 is connected to support arm 30, and the other end is connected to connecting rod 26. The deformation planes of leaf spring assembly one (including leaf springs 22, 23) and leaf spring assembly two (including leaf springs 27, 28) which are perpendicular to each other are the yz plane and the xz plane respectively. That is, the elastic deformation plane of leaf springs 22 and 23 is the yz plane. In the x-axis direction, it is the width direction of the leaf spring. Therefore, it is not easy to deform in the x-axis direction. In the yz plane, it is the thin-walled plane of the leaf spring. Therefore, it is the elastic deformation plane; the elastic deformation plane of leaf springs 27 and 28 is the xz plane. Because in the y-axis direction, it is the width direction of the leaf spring and is not easy to deform. In the xz plane, it is the thin-walled plane of the leaf spring and is the elastic deformation plane. Therefore, leaf springs 22 and 23 enable an elastic relative displacement to occur between support arm 30 and connecting rod 26 in the yz plane, while leaf springs 27 and 28 enable an elastic relative displacement to occur between support arm 30 and connecting rod 26 in the xz plane. Therefore, the elastic structure formed by their combination only undergoes elastic deformation in the direction of the z-axis, which is the intersection line of the yz and xz planes. That is, only elastic deformation occurs in the z-axis direction perpendicular to working surface 102 between support arm 30 and jet part 21.

[0111] Furthermore, it is necessary to control the force between jet part 21 and working surface 102 within the allowable maximum Fmax and minimum Fmin perpendicular force ranges. Therefore, the stiffness K of the leaf spring in the Z-axis direction perpendicular to working surface 102 needs to satisfy the following relationship, that is, K < (Fmax - Fmin) / L, so that the elastic deformation displacement space of the leaf spring in the Z-axis direction perpendicular to the working surface can completely compensate for the interference shaking displacement caused by the end point A of support arm 30 of mobile carrier 40, and enable jet part 21 to always work in close contact with working surface 102 within the allowable force range.

[0112] The structure of jet nozzle 1 will be described below.

[0113] In this embodiment, the front flow channel 15 of the jet nozzle 1 has two parallel surfaces. The "front flow channel of the jet nozzle" 15 refers to the flow channel inside jet nozzle 1 located at the front of jet nozzle 14 (the "jet nozzle" 14 refers to the end of the fluid outlet of jet nozzle 1). The flow channel in this part is provided with two parallel surfaces. The purpose is to regularize the turbulent flow in the fluid into laminar flow so that the ejected fluid is in a thin film shape. The length of this part can be set according to the usage purpose (fluid properties and flow rate). Generally, it is required that the length J of the flow channel with parallel surfaces at the front of the jet nozzle is greater than or equal to the width H of the jet nozzle 1 of the jet nozzle.

[0114] The "nozzle front end flow channel" has three structures. One is a "straight pipe" structure where the cross-section is constant at different locations. Figure 7 , Figure 8 As shown; the second type is that the flow channel has different cross-sections at different locations, such as... Figure 23 , Figure 26 , Figure 29 , Figure 31 The first type is a flared structure; the third type is a constricted structure, which is the opposite of the second type (not shown in the figure). The aforementioned "two mutually parallel surfaces" can be parallel planes (such as...). Figure 7 As shown in 15-1), it can also be a parallel curved surface (such as...). Figure 8 As shown in 15-2), it can also be a structure that combines both planar and curved surfaces.

[0115] Reference Figure 9 This embodiment also includes a compressed gas nozzle 4 fixed to the jet nozzle 1, the rear end of which is connected to a compressed gas pipeline (not shown in the figure); the front flow channel 16 of the compressed gas nozzle 4 has two parallel surfaces. Similarly, the two parallel surfaces of the compressed gas nozzle 4 can also be parallel planes and / or parallel curved surfaces (not individually labeled). Likewise, the "front flow channel" of the compressed gas nozzle 4 also has three structures: one is a straight pipe structure where the cross-section is constant at different positions. Figure 9 , Figure 10 As shown; the second type is that the flow channel has different cross-sections at different locations, such as... Figure 24 The first type is the "flared" structure; the third type is the constricted structure, which is the opposite of the second type (not shown in the figure). It should also be noted that the flow channel structure of the "non-nozzle front end" of the jet nozzle 1 and the compressed gas nozzle 4 can be the same as the "nozzle front end" flow channel, such as... Figure 8 , Figure 10 The figures shown are both parallel surfaces with the same cross-section. They can also be different, such as... Figure 7 , Figure 9 , Figure 20 The flow channel 17 shown as "non-nozzle front end" has a narrowing structure (Note: The "non-nozzle front end flow channel" in this embodiment refers to the same flow channel as the "nozzle front end flow channel", but they are different names due to their different positions. The "non-nozzle front end flow channel" is located far away from the nozzle 14 relative to the "nozzle front end flow channel").

[0116] In this embodiment, "fixed" means that the positions of the compressed gas nozzle 4 and the jet nozzle 1 are fixed when in use, and the compressed gas nozzle and the jet nozzle can be connected in a detachable or non-detachable manner when not in use.

[0117] Reference Figure 7 and Figure 9The width H of the jet nozzle 1 is less than 2 mm, and / or the width h of the compressed gas nozzle 4 is less than 2 mm, so that the fluid ejected from the jet nozzle 1 and / or the gas ejected from the compressed gas nozzle 4 are in the form of a thin film.

[0118] The compressed gas nozzle 4 can be one or two. Figure 9 The compressed gas nozzle 4 shown is a single unit, positioned on one side of the jet nozzle 1, with the front flow channel 16 of the compressed gas nozzle 4 and the front flow channel 15 of the jet nozzle 1 parallel to each other. Taking cleaning as an example, during cleaning, the jet nozzle gradually moves forward to spray high-speed water to rinse the working surface. The parallel high-pressure air located on one side of the jet nozzle 1 (installed so that it is behind the direction of movement of the jet nozzle) can then blow away the residual water stains, achieving a rapid cleaning and drying effect on the working surface.

[0119] Figure 10 The compressed gas nozzles 4 shown are two in number and distributed on both sides of the jet nozzle 1. The flow channels 16 at the front end of the nozzles 4 are parallel to the flow channels 15 at the front end of the jet nozzle 1. This allows the gas ejected from the compressed gas nozzles 4 to be parallel to the fluid ejected from the jet nozzle 1, forming a "coupling". Taking cleaning as an example, during cleaning, the thin-film high-speed water flow is enveloped by a synchronously parallel high-speed airflow. This greatly reduces the resistance of the still air in the environment, which would cause a significant decrease in speed and atomization loss. This ensures that the high-speed thin-film water flow is ejected onto the working surface at the highest possible speed, improving the effect of high-pressure water cleaning. The specific mechanism analysis is as follows:

[0120] like Figure 11 As shown, the velocity field of high-speed water flowing in still ambient air gradually decreases from the center of the water flow to the edge region in contact with the air. This is because when high-speed water flows at high speed in still ambient air, the boundary layer where it meets the air is affected by the viscosity of the air, causing the velocity at the water flow edge to decrease rapidly, especially at the boundary layer where the water flow forms a high-speed flow. Figure 11 The velocity field is shown. The boundary layer water flow near the air interface exhibits the following characteristics: the velocity direction of the water flow is turbulent, forming numerous vortices; therefore, this region is called the turbulent layer (region). The forward velocity in the turbulent layer is severely attenuated, even forming reverse velocity vortices. Within the turbulent layer, near the middle of the water flow, the water velocity direction remains consistent, flowing forward, and the rate (slope) of velocity attenuation from the inside out is much smaller than that in the turbulent layer.

[0121] Due to the velocity field characteristics of the high-speed water flow moving in still ambient air, the turbulent layer of its outer boundary layer is continuously slowed down, stripped away, and atomized as the high-speed water flow moves forward. Consequently, the thickness of the central laminar region of the high-speed water flow gradually decreases, as shown in the following details: Figure 12As shown, as the distance L (range) the water travels forward increases, the rate at which the average velocity of the water decreases accelerates.

[0122] Right now

[0123] Furthermore, the rate of velocity decay of a high-speed water flow as the distance traveled is closely related to the diameter or thickness δ of the water flow. The thicker the water flow, the slower the velocity decay rate and the longer the relative range; the thinner the water flow, the faster the velocity decay rate and the shorter the relative range. The specific reasons are as follows: Figure 11 As shown, the thicker the water flow, the smaller the proportion of the turbulent zone at the water-air interface to the total water flow thickness; conversely, the thinner the water flow, the larger the proportion of the turbulent zone to the total water flow thickness. Therefore, the rate of decrease in water flow velocity is directly proportional to the proportion of the turbulent zone to the total water flow thickness. The specific reasons are as follows... Figure 13 As shown, the thickness of the high-speed water flow varies, resulting in different rates of velocity decay as it travels through the air, and thus different ranges. Curve ① 、 ② 、 ③ When the water is ejected from a high-pressure nozzle with the same initial velocity V0, the corresponding ranges L1>L2>L3 are when the water flow thicknesses are different (δ1>δ2>δ3).

[0124] Based on the relationship between the velocity decay of the high-speed water flow and its travel distance, and the relationship between the water flow thickness and its velocity decay rate and range, it is evident that using the aforementioned nozzle can spray a thin film of high-speed water flow. The aim is to create a more uniform and wider thin film of high-speed water flow into the working surface, achieving both high efficiency and water conservation. However, to save water, using a thinner thin film of high-speed water flow suffers from the aforementioned drawbacks: the velocity decays too quickly in ambient air, resulting in a shorter range, which affects the jetting effect. Therefore, to address this drawback, utilizing high-speed air to encase the high-speed thin film of water can effectively solve this problem.

[0125] Specific mechanism analysis as follows Figure 14As shown, compressed gas nozzles are installed on both sides of the jet nozzle. During cleaning, a thin film of high-speed water flow is formed, which is sandwiched between a high-speed channel and high-speed air. This allows the high-speed water flow and the high-speed air sandwiched within it to flow forward synchronously. The relatively still air in the environment only comes into contact with the high-speed air sandwiched within it, not directly with the high-speed water flow. This creates a velocity attenuation zone from the inside out in the high-speed air flow area, while having minimal impact on the velocity of the high-speed thin film water flow in the central area. Therefore, it ensures that the high-speed water flow is sprayed onto the working surface at a high velocity, increasing the momentum and kinetic energy of the high-speed thin film water flow impacting the working surface, which is beneficial for washing away dirt and achieving both water conservation and good cleaning effect. In other words, by using high-speed air to sandwich a high-speed water film, a thinner water film can be used to achieve a good cutting and washing effect, making it more water-saving and efficient. When used for adhesion-related functions such as spraying paint, this structure not only prevents velocity attenuation but also reduces the evaporation rate of the paint during spraying, avoiding environmental pollution.

[0126] This embodiment provides a method for using a jet device. The moving carrier 40 drives the jet section 21 to work through the elastic compensation structure 50. Due to the buffering effect of the elastic compensation structure 50, the jet nozzle and the working surface can maintain a very small working distance. For example, the range between the jet nozzle 1 and the incident position of the working surface 102 is less than 0.3 meters. In this way, the jet nozzle 1 sprays out a thin film of high-speed fluid within a very small range. The thin film of high-speed fluid is then wrapped by the synchronous high-speed airflow, which can achieve a better jetting effect with a short distance and small attenuation.

[0127] This embodiment also provides a design method for a jet device, such as Figure 2As shown, the elastic displacement L between the rigid structures at both ends of the spring of the elastic compensation structure 50 is greater than or equal to the displacement L0 of the maximum disturbance sway in the direction perpendicular to the working surface generated by the moving carrier 40 when the jet is moving; the elastic stiffness K of the elastic compensation structure 50 in the direction perpendicular to the working surface 102 should satisfy its elastic force F = K·L, which is less than or equal to the difference between the maximum allowable force Fmax and the minimum allowable force Fmin between the jet part 21 and the working surface 102, that is, F≤Fmax-Fmin. The purpose of this design method is that when the moving carrier 40 pushes the jet section 21 to work through the support arm 30, the moving carrier 40 is disturbed by the uneven road surface, causing the support arm 30 to sway. This causes the end point A to generate the maximum disturbance sway displacement L0 perpendicular to the working surface 102. Therefore, the maximum displacement L between the rigid structures at both ends of the spring in the direction perpendicular to the working surface 102 is greater than or equal to L0. This allows the elastic compensation space L of the spring to completely compensate for the disturbance sway L0, ensuring that the jet section 21 always stays in contact with the working surface 102 and its work is unaffected. In other words, the elastic deformation force of the spring designed according to the design method can ensure that the force between the jet section 21 and the working surface 102 is within the allowable range, thereby ensuring that the jet section 21 eliminates sway interference and moves normally under the push of the support arm 30.

[0128] Example 2

[0129] The difference between this embodiment and Embodiment 1 is that the elastic compensation structure is a piston-sleeve structure, that is, the rigid structure is a piston 34 and a sleeve 32 that are nested together, and the spring 33 is placed between the piston 34 and the sleeve 32.

[0130] Specifically, such as Figure 15 , Figure 16 As shown, the piston sleeve structure consists of sleeve 32, spring 33, and piston 34, wherein... Figure 15 Spring 33 is a compression spring. Figure 16 Spring 33 is a tension spring.

[0131] Among them, the sleeve 32 is connected to the support arm 30, the piston 34 is connected to the connecting rod 26, and the connecting rod 26 is connected to the jet section 21.

[0132] Reference Figure 1 , Figure 2 , Figure 15 , Figure 16 During operation, the mobile carrier 40 pushes the jet section 21 along the working surface 102 via the support arm 30. The jet section 21 is in close contact with the working surface 102. When the mobile carrier 40 and its support arm 30 are disturbed and shake, the spring 33 of the elastic compensation structure deforms accordingly, causing the sleeve 32 and piston 34 to undergo relative displacement, reducing the relative displacement of the jet section 21 perpendicular to the working surface 102 caused by disturbance, and maintaining normal operation.

[0133] Therefore, when the moving carrier 40 shakes, the elastic compensation structure of the piston sleeve structure can prevent the jet section 21 from shaking, so that the jet section 21 can still work normally.

[0134] Example 3

[0135] The difference between this embodiment and the previous embodiment is that the flow channel 15 at the front end of the jet nozzle 1 has a uniform cross-section structure. Figure 8 The structure shown has a rectangular cross-section and is of uniform cross-section. Figure 17 The structure shown has a circular cross-section and is of uniform cross-section.

[0136] Furthermore, compressed gas nozzles 4 are provided, either wholly or partially, circumferentially on the outer side of the jet nozzle 1, such as... Figure 18 As shown, the rear end of the compressed gas nozzle 4 is connected to a compressed gas pipeline (not shown in the figure), and the front flow channel 16 of the nozzle 4 has a uniform cross-section structure.

[0137] The "equal cross-section structure" mentioned in this embodiment refers to a structure with an equal cross-section. This cross-section can be rectangular, circular, elliptical, triangular, trapezoidal, or irregular in shape, as long as the nozzle front end has an equal cross-section guide section.

[0138] In this embodiment, "circumferentially outside the jet nozzle 1" means that when the jet nozzle 1 is circular or elliptical, the compressed gas nozzle 4 arranged circumferentially on the outer side is preferably coaxial with the jet nozzle 1; when the jet nozzle 1 has a triangular, trapezoidal, or irregular structure, the compressed gas nozzle 4 arranged circumferentially on the outer side means that it completely covers the jet nozzle 1 in the circumferential direction, or partially covers the jet nozzle 1 in the circumferential direction. In this embodiment, "completely" in "completely or partially" means completely surrounding the jet nozzle 1 in the circumferential direction, such as... Figure 18 As shown, "partial" refers to a portion that is only enclosed circumferentially, such as only enclosing the lower part of jet nozzle 1, as shown. Figure 19 As shown, the high-pressure gas can support the high-pressure liquid, preventing the jet velocity from decreasing too quickly due to excessive distance, thus avoiding the liquid jet at the end failing to achieve the desired spraying effect.

[0139] Example 4

[0140] The difference between this embodiment and the previous embodiments is that, Figure 21 As shown, the nozzle of the jet nozzle 1 is a constricted structure 12, and the nozzle of the compressed gas nozzle 4 is also a constricted structure 12. Of course, the nozzles of the jet nozzle 1 and the compressed gas nozzle 4 can both be constricted structures, or either one can be a constricted structure. In this embodiment, "constriction" refers to the reduction in nozzle area relative to the cross-sectional area of ​​the flow channel at the nozzle tip. In this embodiment, the nozzles of the jet nozzle 1 and / or the compressed gas nozzle 4 are V-shaped flared structures with elliptical openings.

[0141] Example 5

[0142] The difference between this embodiment and the previous implementation is that the jet nozzle 1 and the compressed gas nozzle 4 are an integral structure, collectively referred to as a "gas-liquid nozzle". (Refer to...) Figure 22 , 23 24, set as an integrated structure, has the advantages of compact structure and good "escort" effect.

[0143] Reference Figure 33 , 34 35. In this embodiment, the integrated gas-liquid nozzle has a constriction structure 12 at its nozzle 1. Specifically, the nozzle 1 is configured with an elliptical V-shaped flaring groove 13. The constriction structure is located at the edge of the elliptical outlet with the smallest flow area, causing the fluid velocity to increase rapidly as the flow area decreases, resulting in high-speed ejection. After ejection, the fluid forms a fan-shaped water film along the V-shaped flaring groove 13 in the long axis direction of the elliptical outlet, thus achieving a "cutting" effect with the thin film of high-pressure water and achieving efficient water conservation.

[0144] Reference Figure 25 , 26 27. The gas-liquid nozzle is mounted on the mounting base 2, and the angle between the gas-liquid nozzle and the mounting base 2 is adjustable. The mounting base 2 is provided with a first fluid channel 61 and a first compressed gas channel 71, and the jet nozzle 1 is provided with a second fluid channel 62 and a second compressed gas channel 72. The second fluid channel 62 on the jet nozzle 1 is in communication with the first fluid channel 61 on the mounting base 2, and the second compressed gas channel 72 on the compressed gas nozzle 4 is in communication with the first compressed gas channel 71 on the mounting base 2. This structure allows for three-dimensional angle adjustment of the gas-liquid nozzle relative to the mounting base 2, and ensures that the jet nozzle 1 and the compressed gas nozzle 4 remain unobstructed with their respective fluid and compressed gas channels within any adjustable angle range.

[0145] In this embodiment, the jet nozzle 1 and the compressed gas nozzle 4 are combined into a single structure to form a gas-liquid nozzle. It is applicable when the jet nozzle 1 is only used to spray liquid, such as water for cleaning. In this case, the high-speed thin film water sprayed by the compressed gas nozzle acts as a "protector" to prevent the jet water speed from decreasing significantly and affecting the cleaning effect. The liquid can also be an adhesive substance, such as paint. When the device described in this embodiment is used for paint spraying, the "protector" high-speed gas can reduce the paint vaporization speed, avoid environmental pollution, and protect the health of workers.

[0146] Reference Figure 25 , 2627, 28, 29, The angle-adjustable structure specifically means that the rear end of the gas-liquid nozzle is a spherical body, and the mounting base 2 is provided with a spherical cavity that is adapted to (can be transitionally fitted) the spherical body of the gas-liquid nozzle. The gas-liquid nozzle adopts a three-dimensional angle-adjustable spherical mounting structure, which can flexibly adjust the nozzle angle according to different tilt angles of the working surface, the degree of dirt on the working surface, etc., to ensure that the high-speed water flow is injected into the working surface at a suitable angle.

[0147] Reference Figure 30 , 31 32. The angle-adjustable structure can also be such that the rear end of the gas-liquid nozzle is a cylinder, and the mounting base 2 is provided with a cylindrical cavity adapted to the cylinder.

[0148] This configuration allows the gas-liquid nozzle to be adjusted in two-dimensional space relative to the mounting base 2. That is, the gas-liquid nozzle can rotate around the center of the cylinder in the xy plane to adjust the angle to adapt to the tilt angle of different working surfaces. When used for cleaning, the angle can also be adjusted according to the characteristics of different dirt to achieve better cleaning results.

[0149] The outlets of the first fluid channel 61 and / or the first compressed gas channel 71 on the mounting base 2 are flared groove structures, as shown in the reference. Figure 25 , 26 27. The outlet of the first fluid channel 61 on the mounting base 2 is the first flared recess 51. The outlet of the first compressed gas channel 71 on the mounting base 2 is the second flared recess 52. Within the adjustable angle range of the spherical cavity inside the mounting base 2, the rear end of the second fluid channel 62 of the nozzle is always connected to the first fluid channel 61 of the mounting base 2 through the first flared recess 51, and the rear end of the second compressed gas channel 72 of the nozzle is always connected to the first compressed gas channel 71 of the mounting base 2 through the second flared recess 52.

[0150] Another structure of the flared recess is that the rear end of the jet nozzle 1 and / or the rear end of the compressed gas nozzle 4 is a flared recess structure, such as... Figure 28 , 29 30, 31, and 32, the rear end of the jet nozzle 1 is a third flared recess 53, and the first compressed gas channel 71 of the mounting base is a second flared recess 52. The width of the aforementioned flared recess structure in the XY plane is greater than the sum of the outlet width of the corresponding fluid channel of the mounting base and the corresponding chord length of the adjustable angle of the nozzle 1 relative to the mounting base 2, so that the gas and water channels of the nozzle remain connected within the adjustable angle range relative to the mounting base 2.

[0151] Example 6

[0152] This embodiment provides a fairing, and the structure described in this embodiment can be used in combination with any of the foregoing embodiments.

[0153] like Figure 36 , 37 As shown in Figures 38 and 39, the baffle 9 is connected to the front end of the jet nozzle 1 in a closed or semi-closed manner from the rear end of the jet nozzle 1.

[0154] Semi-enclosed means that when the jet fluid is sprayed onto the working surface, it continues to move forward due to inertia. Therefore, it is only necessary to close the front and sides of the jet nozzle, while the rear and rear sides do not need to be closed.

[0155] The baffle 9 is installed on the jet section 21. The baffle includes a cover plate 91, a side end plate 92, a side plate 93, and a liquid recovery port 94.

[0156] When cleaning is performed using the device described in this embodiment, the jet section 21 is in a vertical position and moves horizontally along the -x axis direction. The baffle 9 extends from the upper side and / or rear end of the jet nozzle 1 to the working surface 102. The high-speed thin film water flow 231 is injected into the front end of the rinsing water belt 232 of the working surface 102 and adheres tightly to the working surface 102.

[0157] Among them, the lower edge of the side end plate 92 and the side plate 93 of the baffle 9 and the lower front edge of the cover plate 91 are closely attached to the working surface 102 to prevent the sewage flushed by the flushing water belt 232 from splashing and flowing outside the baffle 9.

[0158] Furthermore, a liquid recovery port 94 is provided on the side end plate 92 of the baffle to discharge the collected sewage from the liquid recovery port 94. The liquid recovery port 94 is connected to the recovery tank 11 through the recovery pipe 10, so that the sewage collected by the baffle 9 flows into the recovery tank 11 through the recovery pipe 10.

[0159] Example 7

[0160] This embodiment provides a liquid filtration structure for a recovery tank, which can be used in combination with any of the foregoing embodiments.

[0161] Reference Figure 40 Below the jet nozzle 1 is a recovery tank 11 for collecting waste liquid. The recovery tank 11 contains at least two layers of filters to filter the waste liquid. In this embodiment, the recovery tank 11 has a U-shaped tube structure, with one tube being an inlet pipe 44 and the other an outlet pipe 45. A coarse filter 43-1 is installed in the inlet pipe 44, and a fine filter 43-2 is installed in the outlet pipe 45. The fine filter 43-2 divides the recovery tank 11 into a clear liquid zone 46 and a waste liquid zone 47. When used for cleaning, the recovery tank 11 can be reused after filtering the wastewater. When used for paint spraying, the recovery tank 11 is used to recover the dripping paint to avoid waste, and can be reused after filtering out impurities.

[0162] Example 8

[0163] The structure described in this embodiment is only used for cleaning functions. This embodiment differs from the previous embodiments in that the jet section 21 further includes a brush plate 212 and a cleaning seat 211, as shown in the reference... Figure 3 , 4 5, 6, 36, 37, 39, the brush plate 212 and the jet nozzle 1 are both fixed on the cleaning seat 211, and the jet nozzle 1 is located between the brush plate 212 and the elastic compensation structure 50.

[0164] The jet section 21 includes a cleaning seat 211, a brush plate 212, and a jet nozzle 1. The jet nozzle 1 is fixed to the cleaning seat 211, and the brush plate 212 is fixed to the cleaning seat 211 and located behind the jet nozzle 1. The jet nozzle 1 is positioned between the brush plate 212 and the elastic compensation structure. During cleaning, the brush plate 212 moves forward against the working surface 102, scraping the working surface 102 that has been washed by the high-speed water flow.

[0165] The cleaning device described above uses a high-speed thin-film water jet to wash away dirt from the working surface. Then, the brush plate 212 scrapes away the remaining dirt and water stains on the working surface 102 and recycles the wastewater. This forms a streamlined operation of the jet section, including high-pressure water rinsing, brush scraping, and real-time wastewater recycling, achieving efficient, water-saving, and convenient cleaning.

[0166] Example 9

[0167] This embodiment provides an elastically compensated jet device with a parallelogram structure, referring to... Figure 41 , 42 The system includes a movable carrier 40 and a jet section 21 connected by an elastic compensation structure 50. The jet section 21 includes a jet nozzle 1, the rear end of which is connected to a fluid pipeline (not shown in the figure). This embodiment differs from the previous embodiment in that the elastic compensation structure 50 includes two sets of parallel rods connected by a pivot to form a parallelogram structure. A tension spring 35 is connected to the diagonal of the parallelogram structure. The two horizontal sides of the parallelogram structure extend to form a first cantilever 36 located below and a second cantilever 37 located above. The first cantilever 36 is connected to the jet section 21, and the second cantilever 37 is connected to the movable carrier 40 via a support arm 30.

[0168] The "diagonal" of the parallelogram structure refers to any opposite corner, including both the apex and non-apex positions (or the position off-center from the link), as long as elastic pulling can be achieved.

[0169] The elastic compensation structure 50 also includes a proximity switch 38 and / or a displacement sensor 39, which are disposed on the four sides of the parallelogram structure or on the first cantilever 36 or the second cantilever 37.

[0170] Of course, in practical applications, to improve work efficiency, multiple sets of the elastic compensation structure 50 can be used simultaneously, such as... Figure 43 As shown, all of them are within the protection scope of this invention.

Claims

1. An elastically compensated jet device, characterized in that, It includes a mobile carrier (40) and a jet section (21) connected by an elastic compensation structure (50). The jet section (21) includes a jet nozzle (1), the rear end of which is connected to a fluid pipeline (18). The elastic compensation structure (50) is composed of a spring and a rigid structure connected to its two ends.

2. The jet device according to claim 1, characterized in that, The spring is a leaf spring.

3. The jetting device according to claim 2, characterized in that, There are at least two leaf springs, and the deformation planes of the two leaf springs are not parallel.

4. The jet device according to claim 1, characterized in that, The elastic compensation structure (50) is a piston-sleeve structure, that is, the rigid structure is a piston (34) and a sleeve (32) that are nested together, and the spring (33) is placed between the piston (34) and the sleeve (32).

5. The jet device according to claim 1, characterized in that, The jet nozzle (1) has two parallel surfaces at the front end of the flow channel (15).

6. The jetting device according to claim 5, characterized in that, The length (J) of the parallel surface flow channel at the front end of the nozzle is greater than or equal to the width (H) of the nozzle (1).

7. The jet device according to claim 1, characterized in that, It also includes a compressed gas nozzle (4) fixed to the jet nozzle (1), the rear end of which is connected to a compressed gas pipeline; the front end flow channel of the compressed gas nozzle (4) has two parallel surfaces.

8. The jet device according to claim 7, characterized in that, The compressed gas nozzle (4) is one or two, and is set on one side or distributed on both sides of the jet nozzle (1); the flow channel at the front end of the nozzle of the compressed gas nozzle (4) is parallel to the flow channel at the front end of the nozzle of the jet nozzle (1).

9. The jet device according to claim 7, characterized in that, The width (H) of the nozzle (1) is less than 2 mm, and / or the width (h) of the nozzle (4) is less than 2 mm.

10. The jetting device according to claim 1, characterized in that, The jet nozzle (1) has a constant cross-section flow channel at the nozzle front end.

11. The jet device according to claim 10, characterized in that, A compressed gas nozzle (4) is provided circumferentially on the outside of the jet nozzle (1), and the rear end of the compressed gas nozzle (4) is connected to a compressed gas pipeline; the flow channel at the front end of the nozzle (4) has a uniform cross-section structure.

12. The jet device according to claim 1, characterized in that, The nozzle (1) of the jet nozzle has a constricted nozzle structure.

13. The jet device according to claim 7, characterized in that, The nozzle of the compressed gas nozzle (4) has a constricted nozzle structure.

14. The jet device according to claim 13, characterized in that, The nozzle of the jet nozzle (1) and / or the nozzle of the compressed gas nozzle (4) are V-shaped flared structures with elliptical openings.

15. The jet device according to claim 7, characterized in that, The jet nozzle (1) and the compressed gas nozzle (4) are an integral structure, collectively referred to as "gas-liquid nozzle". The gas-liquid nozzle is installed on the mounting base (2), and the gas-liquid nozzle and the mounting base (2) are angle-adjustable. The mounting base (2) is provided with a first fluid channel (61) and a first compressed gas channel (71). The jet nozzle (1) is provided with a second fluid channel (62) and a second compressed gas channel (72). The second fluid channel (62) on the jet nozzle (1) is connected to the first fluid channel (61) on the mounting base (2). The second compressed gas channel (72) on the compressed gas nozzle (4) is connected to the first compressed gas channel (71) on the mounting base (2).

16. The jet device according to claim 15, characterized in that, The angle-adjustable structure is specifically defined as follows: the rear end of the gas-liquid nozzle is a spherical body, and the mounting base (2) is provided with a spherical cavity that is adapted to the spherical body of the gas-liquid nozzle.

17. The jet device according to claim 15, characterized in that, The angle-adjustable structure is specifically defined as follows: the rear end of the gas-liquid nozzle is a cylinder, and the mounting base (2) is provided with a cylindrical cavity that is adapted to the cylinder of the gas-liquid nozzle.

18. The jet device according to claim 15, characterized in that, The outlets of the No. 1 fluid channel (61) and / or the No. 1 compressed gas channel (71) on the mounting base (2) are flared trough structures.

19. The jet device according to claim 15, characterized in that, The rear end of the jet nozzle (1) and / or the rear end of the compressed gas nozzle (4) is a flared groove structure.

20. The jet apparatus according to any one of claims 1-19, characterized in that, It also includes a baffle (9), which is connected to the front end of the jet nozzle (1) from the rear end of the jet nozzle (1) in a closed or semi-closed manner.

21. The jet apparatus according to any one of claims 1-19, characterized in that, The jet section (21) also includes a brush plate (212) and a cleaning seat (211). The brush plate (212) and the jet nozzle (1) are both fixed on the cleaning seat (211). The jet nozzle (1) is located between the brush plate (212) and the elastic compensation structure (50).

22. The jet apparatus according to any one of claims 1-19, characterized in that, Below the jet nozzle (1) is a recovery tank (11) for collecting waste liquid, and the recovery tank (11) is provided with at least two layers of filter screens to filter the waste liquid.

23. An elastically compensated jet device, characterized in that, The system includes a mobile carrier (40) and a jet section (21) connected by an elastic compensation structure (50). The jet section (21) includes a jet nozzle (1), the rear end of which is connected to a fluid pipeline. The elastic compensation structure (50) includes two sets of parallel rods connected by a pivot to form a parallelogram structure. A tension spring (35) is connected at the diagonal of the parallelogram structure. The two horizontal sides of the parallelogram structure are a first cantilever (36) located below and a second cantilever (37) located above. The first cantilever (36) is connected to the jet section (21), and the second cantilever (37) is connected to the mobile carrier (40).

24. The jet device according to claim 23, characterized in that, The elastic compensation structure (50) also includes a proximity switch (38) and / or a displacement sensor (39), which are disposed on the four sides of the parallelogram structure or on the first cantilever (36) or the second cantilever (37).

25. A method of using an elastically compensated jet device, employing the jet device according to any one of claims 1-24, characterized in that, When the mobile carrier (40) drives the jet section (21) to work through the elastic compensation structure (50), the high-speed fluid ejected by the jet nozzle (1) is in the form of a thin film, and the range between the jet nozzle (1) and the incident position of the working surface (102) is less than 0.3 meters.

26. The method of use according to claim 25, characterized in that, The thin-film high-speed fluid is enveloped by a synchronous high-speed airflow.

27. The method of use according to claim 25 or 26, characterized in that, When cleaning using the jet device according to claim 21, the brush plate (212) of the jet section (21) moves forward against the working surface (102) to scrape the working surface (102) that has been washed by the high-speed water flow.

28. A design method for an elastically compensated jet device, designed for the jet device according to any one of claims 1-24, characterized in that, The elastic displacement (L) between the rigid structures at both ends of the spring of the elastic compensation structure (50) is greater than or equal to the displacement (L0) of the maximum disturbance sway in the direction perpendicular to the working surface (102) generated by the moving carrier (40) when moving the jet; the elastic stiffness (K) of the elastic compensation structure (50) in the direction perpendicular to the working surface (102) should satisfy its elastic force F = K·L, which is less than or equal to the difference between the maximum allowable force Fmax and the minimum allowable force Fmin between the jet part (21) and the working surface (102), that is, F≤Fmax-Fmin.

Images