Industrial visual monitor

Abstract

The invention relates to the technical field of visual monitors, in particular to an industrial visual monitor which comprises a monitor body, a second window part, a plurality of tangential nozzles, a plurality of imbibition push strips, a regulation and control pipe assembly and a thermal circulation pump. A lens assembly is mounted on the instrument body, and a protective shell is arranged at the front end of the lens assembly; the plurality of tangential nozzles are arranged on the protective shell; the plurality of imbibition push strips are uniformly distributed along the periphery of the second window part; circulating hot air enters the gas circulation cavity, so that the interior of the protective shell at the front end of the lens assembly is kept dry, the dry hot air in the gas circulation cavity is sprayed out through the tangential nozzle to form strong rotational flow, and rapid and efficient physical demisting is achieved; when the humidity is gradually increased, the second window part is pushed to compress the space of the gas circulation cavity, and the flow speed of the hot air passing through the gas circulation cavity is increased, so that the flow speed of the dry hot air is increased, and the demisting efficiency is further improved.

Description

Technical Field

[0001] This invention relates to the technical field of visual monitoring instruments, and more particularly to an industrial visual monitoring instrument. Background Technology

[0002] Industrial vision monitoring instruments play a crucial role in modern intelligent manufacturing, especially in the field of high-pressure waterjet cutting. They are responsible for real-time and precise monitoring of the cutting path, workpiece positioning, and processing quality, serving as core sensory components to ensure the high-precision and high-efficiency operation of automated production lines. However, the inherent characteristics of waterjet cutting present extremely stringent and unique challenges to the supporting vision monitoring system. During operation, high-pressure waterjet cutting generates a large amount of ultrafine mixed water mist that permeates the cutting chamber. This water mist easily diffuses with the airflow and adheres to any exposed cold surface; furthermore, due to its content of hard abrasive particles, it possesses strong corrosive and abrasive properties. The monitoring instrument's observation window, as the only barrier isolating the internal precision optical components from the harsh external environment, becomes the primary target for this water mist adhesion.

[0003] In existing technologies, the industry has long adopted a solution to address the problem of window contamination by mimicking the electric wipers or rotating blades used in automotive windshields. This solution uses motor-driven blades mounted on the outside of the window to periodically and reciprocally wipe away adhering water droplets and dirt. However, key components wear out extremely quickly, have a very short lifespan, and pose an inherent risk of scratching expensive optical lenses. These scratches severely scatter light, leading to decreased image contrast, loss of detail, and directly impairing the imaging quality and measurement accuracy of the vision system. Replacing scratched lenses is costly and requires downtime. Summary of the Invention

[0004] This invention provides an industrial vision monitoring instrument, the specific solution of which is as follows: An industrial vision monitoring instrument, comprising: The instrument body has a lens assembly mounted on it, and a protective housing is provided at the front end of the lens assembly. The first window component is installed in the middle of the protective housing and is coaxially arranged with the optical axis of the lens assembly; The second window is installed with the protective housing and is located outside the first window. The second window is arranged parallel to the first window and moves along the optical axis of the lens assembly. A gas circulation chamber is provided between the two. Multiple tangential nozzles are provided on the protective housing and are evenly distributed along the outer periphery of the second window member. The spray direction of each tangential nozzle is inclined to the optical axis of the lens assembly. Multiple suction strips are evenly distributed along the outer periphery of the second window piece and are installed with the protective housing; A control tube assembly, wherein the tangential nozzle is connected to the gas circulation chamber via the control tube assembly; A heat circulation pump is installed on the instrument body, and the output end of the heat circulation pump is connected to the gas circulation chamber through a circulation pipe.

[0005] Furthermore, the jet axis of each of the tangential nozzles forms an acute angle with the optical axis, and they are distributed at equal angles in the circumferential direction.

[0006] Furthermore, multiple control tube assemblies are provided, and each control tube assembly is provided corresponding to a tangential nozzle.

[0007] Furthermore, the control tube assembly includes an inner tube and an outer tube sleeved outside the inner tube. The outer ring of the second window piece is provided with a mounting ring. The outer end of the inner tube passes through the mounting ring. The outer side of the outer tube is provided with a through hole one. The inner end of the inner tube is provided with a blind hole. The side wall of the inner tube is provided with a through hole two corresponding to the through hole one.

[0008] Furthermore, a return spring is installed in the inner cavity of the outer tube, and the free end of the return spring abuts against the end of the inner tube.

[0009] Furthermore, each of the suction pushers is provided with a moisture-absorbing seat, the outer surface of which is located at the opening of the protective housing.

[0010] Furthermore, a temperature-conducting ring is embedded in the opening of the protective housing, and the temperature-conducting ring is connected to each moisture-absorbing seat. The temperature-conducting ring is placed at the opening of the tangential nozzle.

[0011] Furthermore, the swelling pusher has a cylindrical structure and includes a coating layer and a water-absorbing medium located within the coating layer.

[0012] Compared with the prior art, the present invention can achieve at least the following beneficial effects: This invention utilizes circulating hot air into a gas circulation chamber to keep the interior of the protective housing at the front of the lens assembly dry, thus keeping the second window component dry and reducing moisture residue. Simultaneously, some of the hot air is discharged through tangential nozzles, and the dry hot air within the gas circulation chamber is ejected through these nozzles. Due to the tangential arrangement of the nozzles, the ejected airflow forms a strong vortex on the outer surface of the second window component. This vortex, on the one hand, directly peels off the attached water droplets using shear force, and on the other hand, generates a Bernoulli negative pressure effect in the central region of the window, drawing in fine water mist and throwing it away, thereby achieving rapid and efficient physical defogging. As humidity gradually increases, the absorbent pusher absorbs moisture and begins to expand, generating thrust to overcome the spring force, pushing the second window component a small distance towards the first window component, compressing the gas circulation chamber space, increasing the flow rate of the hot air passing through the gas circulation chamber, thereby increasing the flow rate of the dry hot air and further improving the defogging efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle.

[0015] Figure 3 This is a cross-sectional structural diagram of the protective housing portion of the present invention.

[0016] Figure 4 This is a schematic diagram of the tangential nozzle distribution structure on the protective housing of the present invention.

[0017] Figure 5 This is a schematic diagram of the positional structure of the first and second window components of the present invention.

[0018] Figure 6 This is a partial cross-sectional view of the protective housing of the present invention.

[0019] Figure 7 For the present invention Figure 6 Enlarged view of section B in the middle.

[0020] The reference numerals in the attached figures are as follows: 1. Instrument body; 2. Protective housing; 3. Heat circulation pump; 4. Circulation pipeline; 5. Second window component; 6. Tangential nozzle; 7. Moisture absorption seat; 8. Temperature guiding ring; 9. First window component; 10. Mounting ring; 11. Suction pusher; 12. Control tube assembly; 13. Gas circulation chamber; 14. Inner tube; 15. Return spring; 16. Outer tube. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Example 1, please refer to... Figures 1-7 As shown, the present invention provides an industrial vision monitoring instrument, including an instrument body 1, a second window 5, multiple tangential nozzles 6, multiple suction push strips 11, a control tube assembly 12, and a heat circulation pump 3; a lens assembly is mounted on the instrument body 1, and a protective housing 2 is provided at the front end of the lens assembly; a first window 9 is installed in the middle of the protective housing 2 and is coaxial with the optical axis of the lens assembly. The second window element 5 is installed with the protective housing 2 and is located outside the first window element 9. The second window element 5 is arranged parallel to the first window element 9 and moves along the optical axis of the lens assembly. A gas circulation chamber 13 is provided between them. The lens assembly for imaging is installed inside the instrument body 1. The front end of the lens assembly is connected to a cylindrical protective housing 2 via a flange to isolate it from the harsh external environment. The first window element 9 is preferably made of high-transmittance, high-hardness single-crystal sapphire. Its optical center is strictly coaxial with the optical axis of the lens assembly, serving as the main imaging window. A second window element 5 is arranged parallel to the first window element 9. The second window element 5 is also made of single-crystal sapphire and can make minute reciprocating movements strictly along the optical axis. A closed, variable-thickness gap is formed between the first window element 9 and the second window element 5, which is the gas circulation chamber 13.

[0023] Multiple tangential nozzles 6 are provided on the protective housing 2 and are evenly distributed along the outer periphery of the second window 5. The spray direction of each tangential nozzle 6 is inclined to the optical axis of the lens assembly. After the gas is ejected through the tangential nozzles 6, a circumferential swirling flow is formed on the outside of the second window 5. In order to achieve active cleaning, multiple tangential nozzles 6 are evenly provided on the protective housing 2 around the outer periphery of the second window 5. When the gas is ejected from these nozzles at a specific angle, a high-speed and stable circumferential rotating airflow layer is formed near the outer surface of the second window 5.

[0024] Multiple swelling pushers 11 are evenly distributed along the outer periphery of the second window element 5 and are installed with the protective shell 2. The swelling pushers 11 absorb water and expand, pushing the second window element 5 to move along the optical axis. Each swelling pusher 11 is encapsulated with a high-performance water-absorbing and swelling material, such as a composite hydrogel. When the ambient humidity increases, the material absorbs water and expands in volume, thereby generating axial thrust, pushing the second window element 5 to move along the optical axis towards the first window element 9. Conversely, when the environment is dry, the material dehydrates and shrinks, and the thrust disappears.

[0025] The regulating pipe assembly 12 and the tangential nozzle 6 are connected to the gas circulation chamber 13 through the regulating pipe assembly 12.

[0026] The heat circulation pump 3 is installed on the instrument body 1. The output end of the heat circulation pump 3 is connected to the gas circulation chamber through the circulation pipe 4. The output end of the heat circulation pump 3 is connected to the gas circulation chamber 13 through the heat-insulated circulation pipe 4, so that dry hot air circulates in the gas circulation chamber 13.

[0027] Through the above design, circulating hot air enters the gas circulation chamber 13, keeping the interior of the protective housing 2 at the front end of the lens assembly dry and the second window 5 dry, reducing moisture residue. At the same time, some hot air is discharged through the tangential nozzle 6, and the dry hot air in the gas circulation chamber 13 is ejected through the tangential nozzle 6. Due to the tangential arrangement of the nozzles, the ejected airflow forms a strong vortex on the outer surface of the second window 5. This vortex directly peels off the attached water droplets with shear force, and on the other hand, it generates a Bernoulli negative pressure effect in the central area of ​​the window, drawing in the fine water mist and throwing it away, thereby achieving rapid and efficient physical defogging. When the humidity gradually increases, the suction pusher 11 absorbs moisture and begins to expand, generating thrust to overcome the spring force, pushing the second window 5 to move a small distance toward the first window 9, compressing the space of the gas circulation chamber 13, increasing the flow rate of the hot air passing through the gas circulation chamber 13, thereby increasing the flow rate of the dry hot air and further improving the defogging efficiency.

[0028] The spray axis of each tangential nozzle 6 forms an acute angle with the optical axis and is distributed at equal angles in the circumferential direction. The spray center axis of each tangential nozzle 6 forms an acute angle (e.g., 45 degrees) with the optical axis, and all nozzles are distributed at equal angles in the circumferential direction.

[0029] Multiple control tube assemblies 12 are provided, each corresponding to a tangential nozzle 6. Each tangential nozzle 6 is connected to the internal gas circulation chamber 13 through an independent control tube assembly 12. A spring provides a restoring force to the second window 5, moving it away from the first window 9.

[0030] The control tube assembly 12 includes an inner tube 14 and an outer tube 16 sleeved outside the inner tube 14. The outer ring of the second window piece 5 is provided with a mounting ring 10. The outer end of the inner tube 14 passes through the mounting ring 10. The outer tube 16 has a through hole one. The inner end of the inner tube 14 is provided with a blind hole. The side wall of the inner tube 14 has a through hole two corresponding to the through hole one. The inner cavity of the outer tube 16 is equipped with a reset spring 15. The free end of the reset spring 15 abuts against the end of the inner tube 14.

[0031] Furthermore, in the initial or low humidity state, the suction pusher 11 remains dry and contracted. Under the action of the return spring 15, the second window piece 5 is located away from the first window piece 9, and the gap between the two is large. At this time, the through hole two on the inner tube 14 is completely misaligned with the through hole one on the outer tube 16, the channel of the tangential nozzle 6 is closed, the heat circulation pump 3 continues to run, pumping mild dry hot air into the gas circulation chamber 13 to continuously keep the double-layer window area warm and slightly dry, preventing condensation.

[0032] When the ambient humidity begins to rise, the suction pusher 11 absorbs moisture and begins to expand, generating thrust to overcome the spring force and push the second window piece 5 to move a small distance toward the first window piece 9. This movement causes the volume of the gas circulation chamber 13 to decrease, and the internal airflow speed to passively increase, enhancing the drying effect of hot air on the window area. However, at this time, since the displacement of the inner tube 14 is still small, the first through hole and the second through hole are still not aligned, the tangential nozzle 6 remains closed, and it only works in the enhanced internal circulation mode, resulting in lower energy consumption.

[0033] When the ambient humidity increases significantly, causing visible water mist or droplets to appear on the window surface, the suction pusher 11 expands fully, pushing the second window piece 5 to its maximum stroke. At this time, the second through hole on the inner tube 14 is aligned with the first through hole on the outer tube 16, opening the channel of the tangential nozzle 6. The dry hot air in the gas circulation chamber 13 is immediately ejected at high speed through all the tangential nozzles 6. Due to the tangential arrangement of the nozzles, the ejected airflow forms a strong vortex on the outer surface of the second window piece 5. This vortex directly peels off the attached water droplets with shear force on the one hand, and generates a Bernoulli negative pressure effect in the central area of ​​the window on the other hand, drawing the fine water mist into the airflow and throwing it away, thereby achieving rapid and efficient physical defogging.

[0034] When the ambient humidity decreases, the moisture inside the suction pusher 11 evaporates, the expansion force weakens, and the elastic force of the reset spring 15 will push the second window piece 5 to gradually move back to the initial position. The inner tube 14 then retracts, and the through hole one and through hole two are repositioned, cutting off the air source of the tangential nozzle 6. The system automatically switches back to the low-power internal circulation heat preservation mode. This cycle is repeated to achieve fully automatic and adaptive window cleaning and protection.

[0035] Example 2 further optimizes the industrial vision monitoring instrument provided in Example 1. The difference from Example 1 is that... (See also: [link to example 1]). Figures 1-3 Each absorbent pusher 11 is provided with a moisture-absorbing seat 7. The outer surface of the moisture-absorbing seat 7 is located at the opening of the protective shell 2, so that external moisture can be quickly conducted to the absorbent pusher 11 through the moisture-absorbing seat 7.

[0036] To accelerate humidity response, a moisture-absorbing seat 7 is tightly fitted to the outside of the covering layer of each absorbent pusher 11. The moisture-absorbing seat 7 is made of a porous material with high specific surface area and rapid capillary moisture conduction performance, such as sintered porous ceramic or open-cell metal foam. The main body of the moisture-absorbing seat 7 is designed as a sleeve or block shape that matches the outer diameter of the pusher. Its outer surface is directly exposed to the strip or grid-like openings specially opened on the side wall of the protective shell 2. This design allows the moisture in the environment to be quickly captured by the outer surface of the moisture-absorbing seat 7 without first diffusing into the internal space of the protective shell 2. It is then rapidly transferred to the pusher covering layer that is tightly attached to it through the continuous pore network inside, and then absorbed by the internal water-absorbing medium.

[0037] A temperature-conducting ring 8 is embedded in the opening of the protective housing 2. The temperature-conducting ring 8 is connected to each moisture-absorbing seat 7. The temperature-conducting ring 8 is placed at the opening of the tangential nozzle 6. The hot air discharged through the tangential nozzle 6 can quickly dry and reset the suction pusher 11, achieving the purpose of automatic dehumidification and reset, thus saving energy.

[0038] Furthermore, the temperature-conducting ring 8 is preferably made of a metal material with high thermal conductivity, such as aluminum alloy or brass, and is machined into an annular shape that matches the curvature of the inner wall of the protective housing 2. The temperature-conducting ring 8 is fixed inside the protective housing 2 by interference fit or thermally conductive adhesive bonding. The inner ring surface of the temperature-conducting ring 8 maintains a large area and close physical contact with the outer surfaces of all moisture-absorbing seats 7, thereby establishing an efficient heat conduction path. At the same time, the circumferential position of the temperature-conducting ring 8 is precisely calculated and laid out to ensure that its entirety or key parts are within the spray coverage area of ​​the tangential nozzle 6.

[0039] The swelling pusher 11 has a cylindrical structure and includes a coating layer and a water-absorbing medium located within the coating layer.

[0040] It is worth mentioning that the coating layer is preferably made of a thermoplastic polyurethane film with a microporous structure. This material combines good flexibility, abrasion resistance, and controllable moisture permeability, effectively constraining the shape of the internal water-absorbing medium while allowing water molecules to pass through smoothly. The internal water-absorbing medium is a composite hydrogel with high expansion rate and reversibility. After absorbing ambient moisture, it can produce significant and stable volume expansion, thus providing sufficient thrust; while in a dry environment, it can reliably shrink and recover, ensuring the cyclic stability of the operation.

[0041] Through the above design, when the ambient humidity is extremely high, the high-temperature dry air ejected at high speed from the tangential nozzle 6, while cleaning the window, will directly impact or sweep across the temperature-conducting ring 8 on the spray path. The temperature-conducting ring 8 quickly absorbs the residual heat of this airflow, and its temperature rises. Since the temperature-conducting ring 8 is in close contact with all the moisture-absorbing seats 7, the heat is quickly and evenly conducted to each moisture-absorbing seat 7. The porous structure of the moisture-absorbing seat 7 itself and its close fit with the pusher cover layer allow the heat to be further effectively transferred to the interior of the water-absorbing medium. This heat significantly accelerates the evaporation and desorption process of the water molecules contained in the water-absorbing medium, causing the hydrogel to actively and quickly dehydrate and shrink. After dehydration and shrinkage, the thrust of the absorbent pusher 11 decreases rapidly, so under the action of the return spring 15, it can drive the second window piece 5 back to the initial position more quickly, ending the high-energy-consuming swirling spray mode in advance. This realizes the recovery and utilization of the waste heat of the cleaning airflow, and uses the energy originally used for cleaning to drive the system's state reset again, forming an energy-saving closed loop, which significantly reduces the overall energy consumption of the equipment under intermittent high humidity conditions.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An industrial vision monitoring instrument, characterized in that, include: The instrument body (1) is equipped with a lens assembly, and a protective housing (2) is provided at the front end of the lens assembly. The first window component (9) is installed in the middle of the protective housing (2) and is coaxial with the optical axis of the lens assembly; The second window piece (5) is installed with the protective housing (2) and is placed outside the first window piece (9). The second window piece (5) is arranged parallel to the first window piece (9) and moves along the optical axis of the lens assembly. A gas circulation chamber (13) is provided between the two. Multiple tangential nozzles (6) are provided on the protective housing (2) and are evenly distributed along the outer periphery of the second window member (5). The spray direction of each tangential nozzle (6) is inclined to the optical axis of the lens assembly. Multiple suction push strips (11) are evenly distributed along the outer periphery of the second window piece (5) and are installed with the protective shell (2); The regulating tube assembly (12) is used to connect the tangential nozzle (6) to the gas circulation chamber (13). A heat circulation pump (3) is installed on the instrument body (1), and the output end of the heat circulation pump (3) is connected to the gas circulation chamber through the circulation pipe (4).

2. The industrial vision monitoring instrument according to claim 1, characterized in that, Each of the tangential nozzles (6) forms an acute angle between its spray axis and the optical axis, and is distributed at equal angles in the circumferential direction.

3. The industrial vision monitoring instrument according to claim 1, characterized in that, Multiple control tube assemblies (12) are provided, and each control tube assembly (12) is correspondingly provided with a tangential nozzle (6).

4. An industrial vision monitoring instrument according to claim 3, characterized in that, The control tube assembly (12) includes an inner tube (14) and an outer tube (16) sleeved outside the inner tube (14). The outer ring of the second window piece (5) is provided with an installation ring (10). The outer end of the inner tube (14) passes through the installation ring (10). The outer side of the outer tube (16) is provided with a through hole one. The inner end of the inner tube (14) is provided with a blind hole. The side wall of the inner tube (14) is provided with a through hole two corresponding to the through hole one.

5. An industrial vision monitoring instrument according to claim 4, characterized in that, A return spring (15) is installed in the inner cavity of the outer tube (16), and the free end of the return spring (15) abuts against the end of the inner tube (14).

6. An industrial vision monitoring instrument according to claim 1, characterized in that, Each of the aforementioned absorbent pusher strips (11) is provided with a moisture-absorbing seat (7), the outer surface of which is located at the opening of the protective housing (2).

7. An industrial vision monitoring instrument according to claim 6, characterized in that, A temperature-conducting ring (8) is embedded in the opening of the protective housing (2). The temperature-conducting ring (8) is connected to each moisture-absorbing seat (7). The temperature-conducting ring (8) is placed at the opening of the tangential nozzle (6).

8. An industrial vision monitoring instrument according to claim 1, characterized in that, The swelling pusher (11) has a cylindrical structure and includes a coating layer and a water-absorbing medium located within the coating layer.

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