A nozzle spray effect detection device

Abstract

The utility model relates to the technical field of coating detection, and disclose a nozzle spraying effect detection device, it includes as detection reference carrier's vertical board, the size of vertical board is matched with standard nozzle spraying width, and the vertical board is densely covered with a plurality of horizontal through -plate surface sliding hole, the sliding hole is slidably connected with the detection column as detection execution unit respectively, the detection column has the degree of freedom of reciprocating horizontal movement relative to the vertical board, and a plurality of detection columns form the detection array for nozzle spraying effect detection. The utility model discloses that the spraying effect is directly presented by the sliding profile of detection column, so that the operator can quickly identify the blocked nozzle, solve the limitation that the traditional observation door can only observe a few exposed nozzles, realize the quick, accurate detection of nozzle spraying effect. Avoid the problem of hub pretreatment substandard caused by nozzle blockage, guarantee the coating adhesion and corrosion resistance, and the simple structure, low cost, convenient for industrialization promotion.

Description

Technical Field

[0001] This utility model relates to the field of coating inspection technology, and in particular to a nozzle spraying effect testing device. Background Technology

[0002] In the aluminum alloy wheel manufacturing process, pretreatment is required before the painting process. The core purpose is to remove oil and impurities from the wheel surface through cleaning and to form a protective film through passivation, thereby ensuring the strong adhesion between the aluminum substrate and the coating. The quality of pretreatment directly determines the adhesion, corrosion resistance, and smoothness of the coating after painting. Currently, key control parameters in the pretreatment process (such as chemical tank concentration, treatment temperature, and spray pressure) have mature detection methods that can achieve real-time evaluation of effectiveness. However, the problem of nozzle clogging still lacks effective monitoring methods: existing pretreatment equipment only has observation doors, through which operators can only visually observe the spraying status of a few exposed nozzles, which cannot cover all nozzles inside the equipment, and cannot accurately identify hidden clogging (such as partial orifice blockage or internal scaling). Once a nozzle is clogged, even if parameters such as chemical tank concentration, temperature, and spray pressure are within the qualified range, the wheel hub in the area corresponding to the clogged nozzle cannot be effectively cleaned and passivated, ultimately leading to insufficient coating adhesion and easy peeling in that area, creating a potential quality hazard.

[0003] Therefore, how to achieve intuitive and accurate detection of nozzle blockage in the pretreatment process has become a technical problem that urgently needs to be solved to ensure the quality of aluminum alloy wheel hub pretreatment. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a simple and intuitive nozzle spraying effect testing device, which facilitates the rapid testing of nozzle spraying coverage and spraying intensity, and avoids pretreatment quality problems caused by nozzle clogging.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A nozzle spraying effect testing device includes a vertical plate as a testing reference carrier. The size of the vertical plate matches the spraying width of a standard nozzle. The vertical plate is densely covered with several horizontally penetrating sliding holes. Detection columns, serving as testing execution units, are slidably connected in the sliding holes. The detection columns have the freedom to reciprocate horizontally relative to the vertical plate. Several detection columns form a testing array for nozzle spraying effect testing.

[0006] Preferably, the detection array is provided with a spray width indicator, which is the rated spray width of the corresponding standard nozzle and is marked with a conspicuous color on the end face of the corresponding detection column to intuitively display the standard spray width range.

[0007] Preferably, the detection device further includes a support plate arranged parallel to the upright plate. The support plate is fixedly connected to the upright plate by a bracket. A guide hole is provided on the support plate corresponding to the sliding hole of the upright plate. The guide hole and the sliding hole are matched in diameter and coaxial. The rear end of the detection column is slidably connected in the guide hole.

[0008] Preferably, the detection device further includes a reset plate arranged parallel to the support plate. The support plate is provided with guide posts, and the reset plate has through holes that match the guide posts. The reset plate is slidably connected to the guide posts along the axial direction of the guide posts through the through holes, and the side of the reset plate near the upright plate can contact the rear end face of all detection posts.

[0009] Preferably, a return spring is sleeved on the guide post, and the two ends of the return spring abut against the support plate and the reset plate respectively, for automatic return of the reset plate. The beneficial effects of this utility model are as follows: This invention visually presents the spraying effect through the sliding contour of the detection column, allowing operators to quickly identify clogged nozzles. It overcomes the limitation of traditional observation doors that can only observe a few exposed nozzles, achieving rapid and accurate detection of the spraying effect. It avoids substandard pre-treatment of the wheel hub due to nozzle clogging, ensuring coating adhesion and corrosion resistance. Furthermore, its simple structure and low cost facilitate industrial application. The support plate provides a double-support structure for the detection column, consisting of a sliding hole and a guide hole, reducing the column's deflection, ensuring smooth sliding, and improving detection accuracy. Simultaneously, it reduces wear on the detection column after long-term use, extends the service life of the connection between the detection column and the sliding hole, and reduces the frequency of device maintenance. The reset plate facilitates the synchronous reset of all detection columns, significantly shortening the detection interval and improving detection efficiency. Attached Figure Description

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 for Figure 1 The left view.

[0013] In the diagram: 10--Upright plate; 11--Sliding hole; 20--Detection column; 21--Panel marking; 30--Support plate; 31--Guide hole; 40--Reset plate; 41--Guide column; 42--Through hole; 43--Return spring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] like Figure 1-2 As shown, a nozzle spraying effect testing device includes a vertical plate 10 serving as a testing reference carrier. The dimensions of the vertical plate 10 are matched with the standard nozzle spraying width. The vertical plate 10 is densely covered with a number of horizontally penetrating sliding holes 11. Detection columns 20 serving as testing execution units are slidably connected in the sliding holes 11. The detection columns 20 have the freedom to reciprocate horizontally relative to the vertical plate 10. The number of detection columns 20 forms a testing array for nozzle spraying effect testing.

[0016] During testing, the nozzle to be tested is positioned directly opposite the upright plate 10, with the spray direction perpendicular to the surface of the upright plate 10. All detection columns 20 are adjusted to slide to their initial positions, extending beyond the front end of the upright plate 10 with consistent extension lengths. The spray system is then activated, and the nozzles spray the solution onto the upright plate 10 at normal operating pressure. During spraying, the impact force of the solution pushes the detection columns 20 within its coverage area to slide horizontally towards the back of the upright plate 10. The sliding distance is directly proportional to the spray intensity; that is, the greater the spray intensity, the longer the sliding distance of the detection columns 20 in that area. After the spraying stabilizes, the spray system is turned off. The detection columns 20 on the upright plate 10 form a spray profile that perfectly corresponds to the spray range of the nozzles. Operators can quickly and accurately identify clogged nozzles based on this profile. If the detection columns 20 in a certain area of ​​the upright plate 10 do not slide or slide a distance much smaller than that of the surrounding area, it indicates that the nozzle is clogged. This implementation method uses the sliding profile of the detection column 20 to visually present the spraying effect, eliminating the need for complex instrument readings. Operators can quickly identify clogged nozzles, overcoming the limitation of traditional observation doors that can only observe a few exposed nozzles, and achieving rapid and accurate detection of the nozzle spraying effect.

[0017] Preferably, such as Figure 2 As shown, the detection array is equipped with a spray width marker 21. The spray width marker 21 corresponds to the rated spray width of the standard nozzle and is marked with a conspicuous color on the end face of the corresponding detection column 20 to visually display the standard spray width range. During detection, the nozzle sprays towards the detection column 20 at a fixed point. If the sliding profile of the detection column 20 formed after spraying does not completely cover the range of the spray width marker 21, or partially exceeds the range of the spray width marker 21, it indicates that the nozzle being tested is blocked. This embodiment introduces the spray width marker 21 as a reference standard. Operators can directly determine whether the nozzle spray width meets the standard by comparing the sliding profile of the detection column 20 with the marked range, further improving detection efficiency and accuracy.

[0018] Preferably, the detection device further includes a support plate 30 arranged parallel to the upright plate 10. The support plate 30 is fixedly connected to the upright plate 10 via a bracket. A guide hole 31 is provided on the support plate 30 corresponding to the sliding hole 11 of the upright plate 10. The guide hole 31 matches the diameter of the sliding hole 11 and is coaxial. The rear end of the detection column 20 is slidably connected in the guide hole 31, forming a double support structure of the sliding hole 11 and the guide hole 31 for the detection column 20. This reduces the deflection of the detection column 20, ensures smooth sliding, and improves detection accuracy. At the same time, it reduces the wear of the detection column 20 after long-term use, extends the service life of the detection column 20 and the sliding hole 11, and reduces the frequency of device maintenance.

[0019] Preferably, the detection device further includes a reset plate 40 arranged parallel to the support plate 30 to facilitate the rapid return of the support columns to their initial positions after detection. Specifically, the support plate 30 is provided with guide columns 41, and the reset plate 40 has through holes 42 that match the guide columns 41. The reset plate 40 is slidably connected to the guide columns 41 along the axial direction of the guide columns 41 through the through holes 42, and the side of the reset plate 40 near the upright plate 10 can contact the rear end faces of all the detection columns 20. After the detection is completed, the operator pushes the reset plate 40 towards the front end of the upright plate 10. The reset plate 40 will simultaneously push all the detection columns 20 towards the front end of the upright plate 10 until all the detection columns 20 are returned to their initial positions "extending beyond the front end face of the upright plate 10 and of uniform length", thus completing the reset. This achieves synchronous reset of all the detection columns 20, significantly shortening the detection interval time and improving detection efficiency.

[0020] Preferably, a return spring 43 is sleeved on the guide post 41, with its two ends abutting against the support plate 30 and the reset plate 40 respectively, for automatic return of the reset plate 40. When the detection post 20 resets, the operator pushes the reset plate 40 towards the upright plate 10, compressing the return spring 43; when the detection post 20 returns to its initial position, the reset plate 40 is released, and the return spring 43, under the action of elastic restoring force, pushes the reset plate 40 automatically back along the guide post 41 in a direction away from the upright plate 10, waiting for the next detection. This eliminates the need for the operator to manually pull the return plate 40, further reducing manual operation steps and improving detection convenience. The above-disclosed embodiments are merely specific examples of this utility model, but this utility model is not limited thereto. For those skilled in the art, any modifications made without departing from the principle of this utility model should be considered as protected by this utility model.

Claims

1. A nozzle spraying effect detection device, characterized in that: The system includes a vertical plate (10) serving as a reference carrier for testing. The dimensions of the vertical plate (10) are matched with the spray width of a standard nozzle. The vertical plate (10) is densely covered with several horizontally penetrating sliding holes (11). Each sliding hole (11) is slidably connected to a detection column (20) serving as a testing execution unit. The detection column (20) has the freedom to move horizontally back and forth relative to the vertical plate (10). Several detection columns (20) form a testing array for testing the spray effect of the nozzle.

2. The nozzle spraying effect detection device according to claim 1, characterized in that: The detection array is provided with a width marking (21), which is the rated spray width of the corresponding standard nozzle and is marked with a conspicuous color mark on the end face of the corresponding detection column (20) to intuitively display the standard spray width range.

3. The nozzle spraying effect detection device according to claim 1, characterized in that: The detection device also includes a support plate (30) arranged parallel to the upright plate (10). The support plate (30) is fixedly connected to the upright plate (10) by a bracket. A guide hole (31) is provided on the support plate (30) corresponding to the sliding hole (11) of the upright plate (10). The guide hole (31) matches the diameter of the sliding hole (11) and is coaxial. The rear end of the detection column (20) is slidably connected in the guide hole (31).

4. The nozzle spraying effect detection device according to claim 3, characterized in that: The detection device also includes a reset plate (40) arranged parallel to the support plate (30). The support plate (30) is provided with a guide post (41). The reset plate (40) is provided with a through hole (42) matching the guide post (41). The reset plate (40) is slidably connected to the guide post (41) along the axial direction of the guide post (41) through the through hole (42). The side of the reset plate (40) near the upright plate (10) can contact the rear end face of all the detection posts (20).

5. The nozzle spraying effect detection device according to claim 4, characterized in that: A return spring (43) is sleeved on the guide post (41). The two ends of the return spring (43) abut against the support plate (30) and the reset plate (40) respectively, for the automatic return of the reset plate (40).

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