Anti-corrosion treatment device for bolt fastener

By installing a cleaning device before spraying, and using a drying and water pump system to remove dust and oxides from the surface of bolts and fasteners, the problem of surface impurities on bolts and fasteners before spraying is solved, improving the spraying effect of the anti-corrosion spraying machine and the anti-corrosion performance of bolts and fasteners.

CN224208368UActive Publication Date: 2026-05-08TAICANG KELUOSONG FASTENER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TAICANG KELUOSONG FASTENER CO LTD
Filing Date
2025-05-26
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Dust and oxides adhere to the surface of existing bolt fasteners before the anti-corrosion coating is applied, resulting in reduced coating adhesion, affecting the coating effect, and potentially causing coating peeling and localized corrosion.

Method used

Before spraying, a cleaning device is set up, including a drying mechanism and a water pump system. The surface dust and oxides are removed by air drying, then the cleaning agent is used to rinse and collect impurities. Finally, the bolt surface is dried by the air drying mechanism to ensure that the surface is clean and free of cleaning agent residue.

Benefits of technology

It effectively removes dust and oxides from the surface of bolts and fasteners, prevents impurities from blocking paint adhesion, improves the anti-corrosion effect of spraying, and prevents coating peeling and localized corrosion.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of bolt fastener processing, and discloses a bolt fastener anti-corrosion treatment device which comprises an anti-corrosion spraying coater, a water pump can be started to pump a cleaning agent stored in a collecting mechanism into a water guide pipe, and then the cleaning agent enters a spraying pipe frame to be sprayed out. The surface of the bolt fastener is flushed, dust and oxide which are not blown away are flushed away, then the dust and the oxide fall into the collecting mechanism along with the cleaning agent to be collected and treated, later secondary use is facilitated, and then the bolt fastener continues to be conveyed. The air drying mechanism is used for blowing air to the surface of the bolt fastener to dry redundant cleaning agents attached to the surface of the bolt fastener, through cleaning of the cleaning device, the attachments on the surface of the bolt fastener can be effectively cleaned, the situation that the attachments on the surface of the bolt fastener can be blocked by the impurities during later spraying processing treatment is avoided, and the spraying anti-corrosion effect of the anti-corrosion spraying machine is improved; and the situation of local corrosion caused by coating falling and blistering is avoided.
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Description

Technical Field

[0001] This utility model relates to the field of bolt fastener processing, and in particular to a bolt fastener anti-corrosion treatment device. Background Technology

[0002] Anti-corrosion treatment devices for bolts and fasteners are mainly used to prevent bolts, nuts and other fasteners from corroding in harsh environments and to extend their service life. Common methods include spraying, dipping and plating.

[0003] When using an anti-corrosion spraying machine to apply anti-corrosion coating to the surface of bolts and fasteners, a perforated plate containing the bolts and fasteners is placed on several rollers on the machine. These rollers are typically connected by sprockets and chains, but other connection methods are also possible. A motor on one side drives a rotating shaft to transport the perforated plate. Once inside the machine, a piston pump draws the anti-corrosion coating agent from the storage tank into the delivery pipe and the spraying robotic arm. Simultaneously, the robotic arm moves to spray the bolts and fasteners on the perforated plate. After spraying, the plate is conveyed out, while excess coating falls to the bottom of the machine's inner wall and is discharged from the outlet. During production, storage, and transportation, the bolts and fasteners may accumulate dust or oxides on their surface. These impurities can reduce coating adhesion, affecting the anti-corrosion effect and potentially causing coating peeling, blistering, and localized corrosion. Utility Model Content

[0004] The purpose of this invention is to provide a corrosion protection device for bolt fasteners, which aims to solve the problems in the prior art.

[0005] This utility model is implemented as follows: a bolt fastener anti-corrosion treatment device includes an anti-corrosion spraying machine. A storage tank is installed at the top of the anti-corrosion spraying machine, and a piston pump is installed at the outlet of the storage tank. A conveying pipe is fixedly installed at the outlet of the piston pump. A spraying robotic arm is installed on the inner wall of the anti-corrosion spraying machine, and several circular rollers are installed through the inner wall of the anti-corrosion spraying machine. A motor is fixedly installed on one side of the anti-corrosion spraying machine, and the output end of the motor is fixedly connected to one side of one of the circular rollers via a coupling. A cleaning device is installed on one side of the anti-corrosion spraying machine. The cleaning device can use a water pump to extract cleaning agent from the collection mechanism and then use a spray pipe frame to rinse and clean the surface of the bolt fasteners during the conveying process.

[0006] Preferably, the cleaning device includes a bracket, two bolts, and a water pump. The anti-corrosion spraying machine has symmetrically arranged slots on one side, with both ends of the bracket inserted into the inner walls of the two slots and fixed by bolts. A spray pipe frame is also included, with one end of the frame installed through the bracket on one side. A water guide pipe has both ends spirally installed in the inner wall of the water pump outlet and the inner wall of one end of the spray pipe frame, respectively. A collection mechanism is located between the water pump inlet and one side of the anti-corrosion spraying machine for storing and collecting the cleaning agent. A drying mechanism is located on both sides of the bracket for preliminary air cleaning of the bolt fasteners before cleaning, and for drying the surface after cleaning to remove any remaining cleaning agent.

[0007] Preferably, both ends of the bracket are chamfered.

[0008] Preferably, the collection mechanism includes a collection box, wherein one side of the collection box is fixedly installed on one side of the anti-corrosion spraying machine, and the outlet on the bottom side is fixedly connected to the inlet of the water pump; and a filter screen, wherein the filter screen is fixedly installed in the inner wall of the collection box.

[0009] Preferably, the longitudinal section of the filter screen is trapezoidal, and the side of the filter screen closer to the anti-corrosion spraying machine is larger than the other end.

[0010] Preferably, the bottom of the collection box is symmetrically fixed with support legs on both sides, and the bottom of the support legs abuts against the ground.

[0011] Preferably, the air-drying mechanism includes an air box, wherein one side of the air box is fixedly installed on one side of the support, and an air pump is fixedly installed on one side of the air box; two air spray pipes, wherein the two ends of the two air spray pipes are respectively installed through the inner walls of the two ends of the support; and a plurality of air guide pipes, wherein the two ends of the air guide pipes are respectively installed through the outer surface of one side of the air box and the outer surface of the air spray pipes.

[0012] Preferably, the air-drying mechanism further includes a heating wire mesh, wherein the heating wire mesh is fixedly installed in the inner wall of the air box.

[0013] The beneficial effects of this utility model's disclosed anti-corrosion treatment device for bolt fasteners are as follows: By setting up a cleaning device, after the bolt fasteners placed on the hollow plate are conveyed to a certain position by the roller, the surface is first cleaned by the air drying mechanism to blow away the dust and oxides attached to the surface. Then, the water pump is started to draw the cleaning agent stored in the collection mechanism into the water pipe, and then it enters the interior of the spray pipe frame and is sprayed out to rinse the surface of the bolt fasteners, washing away the dust and oxides that were not blown away. Then, the cleaning agent falls into the collection mechanism for collection and processing, which facilitates secondary use later. Then, the conveying continues, and the surface is air-dried by the air drying mechanism to dry the excess cleaning agent attached to the surface, avoiding the excess cleaning agent from affecting the subsequent spraying process. Through the cleaning of the cleaning device, the surface of the bolt fasteners can be effectively cleaned, preventing these impurities from blocking the adhesion of the spray agent during the subsequent spraying process, improving the spraying and anti-corrosion effect of the anti-corrosion spraying machine, and avoiding the occurrence of local corrosion due to coating peeling, blistering, etc. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a three-dimensional structural diagram of the anti-corrosion spraying machine of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the collection box of this utility model;

[0017] Figure 4 for Figure 3 A three-dimensional schematic diagram of a local structure;

[0018] Figure 5 This is the system control flowchart of this utility model.

[0019] Labeling Descriptions: 1. Anti-corrosion spraying machine; 2. Cleaning device; 3. Storage tank; 4. Piston pump; 5. Conveying pipe; 6. Spraying robotic arm; 7. Circular roller; 8. Motor; 21. Bracket; 22. Slot; 23. Bolt; 24. Spray pipe frame; 25. Water guide pipe; 26. Water pump; 27. Collection mechanism; 271. Collection box; 272. Support leg; 273. Filter screen; 28. Drying mechanism; 281. Air box; 282. Air pump; 283. Air guide pipe; 284. Spray pipe; 285. Heating wire mesh. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0022] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0023] In this embodiment:

[0024] Reference Figure 1 The following is a preferred embodiment of the present invention.

[0025] This embodiment of a bolt fastener anti-corrosion treatment device includes an anti-corrosion spraying machine 1. The top of the anti-corrosion spraying machine 1 is provided with a storage tank 3. A piston pump 4 is provided at the outlet of the storage tank 3. A conveying pipe 5 is fixedly installed at the outlet of the piston pump 4. A spraying robotic arm 6 is provided on the inner wall of the anti-corrosion spraying machine 1. Several circular rollers 7 are installed through the inner wall of the anti-corrosion spraying machine 1. A motor 8 is fixedly installed on one side of the anti-corrosion spraying machine 1. The output end of the motor 8 is fixedly connected to one side of one of the circular rollers 7 by means of a coupling. A cleaning device 2 is provided on one side of the anti-corrosion spraying machine 1. The cleaning device 2 can use a water pump 26 to extract the cleaning agent in the collection mechanism 27 and then use a spray pipe frame 24 to rinse and clean the surface of the bolt 23 fastener during the conveying process. When using the anti-corrosion spraying machine 1 to spray anti-corrosion coating on the surface of the bolts 23 fasteners, a perforated plate containing the bolts 23 fasteners is placed on several rollers 7 on the anti-corrosion spraying machine 1. These rollers 7 are typically connected by sprockets and chains, but other connection methods are also possible and not fixed. Then, a motor 8 on one side is started to drive the rotating shaft, conveying the perforated plate containing the bolts 23 fasteners. After being conveyed to a certain position, the surface is washed and cleaned by the cleaning device 2, and then air-dried to remove dust and oxides from the surface of the bolts 23 fasteners. Clean the material thoroughly to prevent impurities from hindering the adhesion of the coating agent during subsequent spraying. This will improve the anti-corrosion effect of the anti-corrosion spraying machine 1 and prevent the coating from peeling off, blistering, and causing localized corrosion. After being conveyed into the anti-corrosion spraying machine 1, the piston pump 4 can be started to draw the anti-corrosion coating agent in the storage tank 3 into the conveying pipe 5 and the spraying robotic arm 6. Then, the spraying robotic arm 6 is started to move and spray the bolts 23 fasteners placed on the hollow plate. Finally, after the spraying is completed, it is conveyed out. The excess coating will fall to the bottom of the inner wall of the anti-corrosion spraying machine 1 and finally be discharged from the outlet.

[0026] Figure 1-5The cleaning device 2 shown includes a bracket 21, two bolts 23, and a water pump 26. A slot 22 is symmetrically provided on one side of the anti-corrosion spraying machine 1, with both ends of the bracket 21 inserted into the inner walls of the two slots 22 and fixed by the bolts 23. A spray pipe frame 24 is provided, with one end of the spray pipe frame 24 extending through and installed on one side of the bracket 21. A water guide pipe 25 is provided, with both ends spirally installed in the inner wall of the outlet of the water pump 26 and the inner wall of one end of the spray pipe frame 24. A collection mechanism 27 is provided between the inlet of the water pump 26 and one side of the anti-corrosion spraying machine 1 for storing and collecting the cleaning agent. A drying mechanism 28 is provided on both sides of the bracket 21 for preliminary air cleaning of the surface of the bolts 23 fasteners before cleaning, and for drying the surface after cleaning to remove any remaining cleaning agent. By setting up the cleaning device 2, after the bolts 23 fasteners placed on the hollow plate are conveyed to a certain position by the roller 7, the surface of the bolts 23 fasteners is first cleaned by the air drying mechanism 28 to blow away the dust and oxides attached to the surface. Then, the water pump 26 is started to draw the cleaning agent stored in the collection mechanism 27 into the water pipe 25, and then it enters the interior of the spray pipe frame 24 to spray out and rinse the surface of the bolts 23 fasteners, washing away the dust and oxides that were not blown away. Then, the cleaning agent falls into the collection mechanism 27 for collection and processing, which is convenient for secondary use later. Then, the bolts 23 fasteners are conveyed again and the surface of the bolts 23 fasteners is dried by the air drying mechanism 28 to avoid the excess cleaning agent affecting the subsequent spraying process. The cleaning device 2 can effectively clean the surface of the bolts 23 fasteners, preventing these impurities from blocking the adhesion of the spray agent during the subsequent spraying process, improving the spraying and anti-corrosion effect of the anti-corrosion spraying machine 1, and avoiding the occurrence of local corrosion due to coating peeling, blistering and other problems.

[0027] Figure 1-5 The bracket 21 shown has chamfers on both sides. By chamfering both sides of the bracket 21, the area at both ends of the bracket 21 can be reduced, making it easier to quickly align with the slot 22 and insert it.

[0028] Figure 1-5The collection mechanism 27 shown includes a collection box 271, one side of which is fixedly installed on the side of the anti-corrosion spraying machine 1, and the outlet on the bottom side is fixedly connected to the inlet of the water pump 26; and a filter screen 273, which is fixedly installed in the inner wall of the collection box 271. By setting up the collection mechanism 27, before cleaning, cleaning agent can be placed inside the collection box 271, and then the water pump 26 can extract the cleaning agent from the collection box 271 for rinsing. The rinsed cleaning agent and the rinsed oxides will enter the collection box 271 together, where the dust and oxides will be filtered out by the filter screen 273, while the cleaning agent will fall into the collection box 271 below the filter screen 273 for later recycling and cleaning. The longitudinal section of the filter screen 273 is trapezoidal, with the side of the filter screen 273 closer to the anti-corrosion spraying machine 1 being larger than the other end. By designing the longitudinal section of the filter screen 273 into a trapezoidal shape, it can filter detergent from all four sides. The filtered dust and oxides will fall along the sloping inner wall and collect at the bottom in the middle, facilitating later processing. This also does not hinder the filtration function of the filter screen 273 and prevent clogging. Support legs 272 are symmetrically fixed to both sides of the bottom of the collection box 271, with the bottom of the legs 272 resting on the ground. The support legs 272 provide support and reinforcement to the bottom of the collection box 271, making it less prone to damage and extending its service life.

[0029] Figure 1-5 The drying mechanism 28 shown includes a wind box 281, one side of which is fixedly mounted on one side of a bracket 21, and an air pump 282 is fixedly mounted on one side of the wind box 281; two air spray pipes 284, the two ends of which are respectively installed through the inner walls of the two ends of the bracket 21; and several air guide pipes 283, the two ends of which are respectively installed through one side of the wind box 281 and the outer surface of the air spray pipes 284. By setting up the drying mechanism 28, after the roller 7 conveys the bolt 23 fastener to a certain position, the air pump 282 will draw external air into the interior of the wind box 281, and then deliver it to the air spray pipes 284 through the air guide pipes 283 and spray it out. The air sprayed from one air spray pipe 284 will perform preliminary cleaning treatment on the surface of the bolt 23 fastener, while the air sprayed from the other air spray pipe 284 will dry the excess cleaning agent remaining on the surface of the bolt 23 fastener, so as to avoid the excess cleaning agent affecting the subsequent spraying process. The drying mechanism 28 also includes a heating wire mesh 285, which is fixedly installed in the inner wall of the air box 281. By setting the heating wire mesh 285, the surface of the heating wire mesh 285 can be heated after being energized. When the air drawn in by the air pump 282 passes through the heating wire mesh 285, heat exchange occurs and the temperature of the air is increased, thereby accelerating the drying speed and efficiency.

[0030] Working principle: When using the anti-corrosion spraying machine 1 to spray anti-corrosion coating on the surface of the bolts 23 fasteners, the perforated plate containing the bolts 23 fasteners is placed on several rollers 7 on the anti-corrosion spraying machine 1. These rollers 7 are usually connected by sprockets and chains, but other connection methods are also possible and are not fixed. Then, the motor 8 on one side is started to drive the rotating shaft, conveying the perforated plate containing the bolts 23 fasteners. When it reaches a certain position, the air pump 282 is simultaneously activated. Water pump 26 and air pump 282 draw outside air into the air box 281. When the heating wire mesh 285 is energized, its surface temperature rises. As air passes through the heating wire mesh 285, heat exchange occurs, raising the air temperature. The air is then transported through air duct 283 to spray air through air nozzles 284. The air from one of the air nozzles 284 performs preliminary cleaning on the surface of the bolts 23 fasteners, blowing away dust and oxides. Meanwhile, water pump 26 collects the air from the air box. The cleaning agent inside 271 is drawn into the water guide pipe 25 and then sprayed out into the spray nozzle frame 24 to rinse the surface of the bolt 23 fastener, washing away any dust and oxides that were not blown away. The rinsed cleaning agent and the washed-off oxides enter the collection box 271 together. The dust and oxides are filtered out by the filter screen 273, while the cleaning agent falls into the collection box 271 below the filter screen 273 for later recycling. The bolt fastener is then conveyed, and the air sprayed from another air pipe 284 dries any excess cleaning agent remaining on the surface of the bolt 23 fastener, preventing excess cleaning agent from affecting the subsequent spraying process. The cleaning device 2 effectively cleans the surface of the bolt 23 fastener, preventing these impurities from blocking the adhesion of the spray agent during the subsequent spraying process, improving the anti-corrosion effect of the anti-corrosion spraying machine 1, and avoiding coating peeling, blistering, and localized corrosion. Once the coating is delivered to the inside of the anti-corrosion spraying machine 1, the piston pump 4 can be started to draw the anti-corrosion coating agent from the storage tank 3 into the conveying pipe 5 and the spraying robotic arm 6. Then, the spraying robotic arm 6 is started to move and spray the bolts 23 fasteners placed on the hollow plate. After the spraying is completed, the coating is delivered out. The excess coating will fall to the bottom of the inner wall of the anti-corrosion spraying machine 1 and finally be discharged from the outlet.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for corrosion protection of bolt fasteners, characterized in that, The system includes an anti-corrosion spraying machine (1), a storage tank (3) is provided on the top of the anti-corrosion spraying machine (1), a piston pump (4) is provided at the outlet of the storage tank (3), a conveying pipe (5) is fixedly installed at the outlet of the piston pump (4), a spraying robot arm (6) is provided on the inner wall of the anti-corrosion spraying machine (1), several round rollers (7) are installed through the inner wall of the anti-corrosion spraying machine (1), a motor (8) is fixedly installed on one side of the anti-corrosion spraying machine (1), the output end of the motor (8) is fixedly connected to one side of one of the round rollers (7) by means of a coupling, and a cleaning device (2) is provided on one side of the anti-corrosion spraying machine (1). The cleaning device (2) can use a water pump (26) to extract the cleaning agent in the collection mechanism (27) and then use the spray pipe frame (24) to rinse and clean the surface of the bolts (23) fasteners during the transmission process.

2. The anti-corrosion treatment device for bolt fasteners as described in claim 1, characterized in that, The cleaning device (2) includes a bracket (21), two bolts (23) and a water pump (26). The anti-corrosion spraying machine (1) has symmetrical slots (22) on one side, wherein the two ends of the bracket (21) are respectively inserted into the inner walls of the two slots (22) and fixed by bolts (23). A nozzle mount (24), wherein one end of the nozzle mount (24) is mounted through and on one side of the bracket (21); Water guide pipe (25), wherein the two ends of the water guide pipe (25) are respectively spirally installed in the inner wall of the outlet of the water pump (26) and in the inner wall of one end of the nozzle frame (24); Collection mechanism (27), wherein the collection mechanism (27) is located between the inlet of the water pump (26) and one side of the anti-corrosion spraying machine (1), for storing and collecting cleaning agent; The air drying mechanism (28) is set on both sides of the bracket (21) to perform preliminary air blowing cleaning on the surface of the bolt (23) fasteners before cleaning, and to air dry the surface after cleaning to dry the excess cleaning agent.

3. The anti-corrosion treatment device for bolt fasteners as described in claim 2, characterized in that, Both ends of the bracket (21) are chamfered.

4. The anti-corrosion treatment device for bolt fasteners as described in claim 3, characterized in that, The collection mechanism (27) includes a collection box (271), wherein one side of the collection box (271) is fixedly installed on one side of the anti-corrosion spraying machine (1), and the outlet on the bottom side is fixedly connected to the inlet of the water pump (26). A filter screen (273) is fixedly installed in the inner wall of the collection box (271).

5. The anti-corrosion treatment device for bolt fasteners as described in claim 4, characterized in that, The longitudinal section of the filter screen (273) is trapezoidal, and the size of the filter screen (273) on the side closer to the anti-corrosion spraying machine (1) is larger than the size of the other end.

6. The anti-corrosion treatment device for bolt fasteners as described in claim 5, characterized in that, The bottom of the collection box (271) is symmetrically fixed with support legs (272) on both sides, and the bottom of the support legs (272) abuts against the ground.

7. The anti-corrosion treatment device for bolt fasteners as described in claim 6, characterized in that, The air drying mechanism (28) includes a bellows (281), wherein one side of the bellows (281) is fixedly installed on one side of the bracket (21), and an air pump (282) is fixedly installed on one side of the bellows (281). Two air jet pipes (284), wherein the two ends of the two air jet pipes (284) are respectively installed through the inner walls of the two ends of the bracket (21); Several air guide pipes (283) are installed at both ends through one side of the air box (281) and the outer surface of the air spray pipe (284).

8. The anti-corrosion treatment device for bolt fasteners as described in claim 7, characterized in that, The air-drying mechanism (28) further includes a heating wire mesh (285), wherein the heating wire mesh (285) is fixedly installed in the inner wall of the air box (281).