Device for preventing rust of stubble-throwing reinforcing steel bar joints
By designing an anti-rust device for the electric spray gun and oil delivery assembly, the problems of large size, inconvenience in carrying, and spray dead zones of existing devices have been solved, realizing portable and efficient anti-rust treatment, adapting to steel bars of different lengths, and improving the convenience of operation and rust removal efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 山西七建集团有限公司
- Filing Date
- 2025-03-28
- Publication Date
- 2026-04-24
AI Technical Summary
Existing rust prevention devices are bulky, difficult to carry, inefficient for high-altitude operations, inconvenient to spray, and cannot adapt to steel bars of different lengths, making operation inconvenient.
A device comprising an electric spray gun and an oil delivery assembly was designed. The oil delivery assembly consists of an externally threaded tube, an internally threaded tube, a transparent oil delivery tube, a bamboo-joint tube, a folded tube, and an annular tube, and has adjustable angle and support functions. Combined with a filter assembly, it filters rust-preventive oil to reduce the risk of clogging.
It enables portable rust prevention treatment, improves the efficiency of high-altitude operations, adapts to steel bars of different lengths, reduces spraying dead zones, and improves operational convenience and rust removal efficiency.
Smart Images

Figure CN224157115U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rust prevention technology, and in particular to a device for rust prevention of spliced steel bar joints. Background Technology
[0002] In construction engineering, a rebar splinter joint refers to a reserved portion of rebar at a specific location (such as above the non-connection zone). This portion of rebar is usually at a certain height above the ground. This design is mainly to facilitate subsequent construction connections. However, the more rebar splinter joints there are, the faster the rebar corrodes, which significantly affects the safety and durability of the structure.
[0003] A search revealed that Chinese Patent CN218132841U discloses a rebar rust prevention treatment device. This device addresses the issue of applying rust inhibitor to the main body of the rebar using a rust inhibitor wiping cotton layer placed inside the rebar sleeve. However, this method cannot apply rust inhibitor to the clamped portion, the cotton layer has a limited storage capacity requiring frequent replenishment, and it is not suitable for rebars of different lengths, making operation inconvenient and difficult to achieve good rust prevention results in engineering management. Therefore, this device can effectively convey and spray rust inhibitor during the rebar rust prevention treatment process. It is simple to operate, avoids spraying dead zones caused by clamping and fixing, and avoids the problem of only being able to treat rebars of one length, exhibiting high reliability.
[0004] Although the aforementioned rust prevention device is convenient for spraying rust inhibitors, its large size makes it difficult to carry. As a result, when rust prevention is applied to steel bar joints at higher locations, an aerial work platform is needed to move the device to a higher position for rust prevention treatment. This is inconvenient to use, and the repeated movement of the device can reduce the efficiency of rust removal from steel bar joints. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for rust prevention of spliced rebar joints.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a device for rust prevention of spliced rebar joints, comprising an electric spray gun, wherein an oil delivery assembly is provided on one side of the electric spray gun;
[0007] The oil delivery assembly includes an externally threaded tube that is connected to the output end of an electric spray gun. An internally threaded tube is connected to the external thread of the externally threaded tube. A transparent oil delivery tube and a bamboo-joint tube are connected to one end of the internally threaded tube. The bamboo-joint tube is located outside the transparent oil delivery tube. A folded tube is connected to one end of the transparent oil delivery tube and the bamboo-joint tube. An annular tube is connected to one end of the folded tube. Multiple oil nozzles are connected to the inner wall of the annular tube.
[0008] As a further description of the above technical solution:
[0009] A connecting rod is fixedly connected to the lower surface of the annular tube, and a sliding sleeve is fixedly connected to one end of the connecting rod. A fixing ring is fixedly connected to the lower surface of the bamboo-joint tube, and the sliding sleeve is slidably connected to the outside of the fixing ring.
[0010] As a further description of the above technical solution:
[0011] A threaded hole is provided on one side of the sliding sleeve, and a stud is threaded into the inside of the threaded hole. A knob is fixedly connected to one end of the stud.
[0012] As a further description of the above technical solution:
[0013] The internal structure of the externally threaded tube is equipped with a filter assembly, which includes a fixing rod that is fixedly connected to the internal structure of the externally threaded tube.
[0014] As a further description of the above technical solution:
[0015] One end of the fixing rod is fixedly connected to a mounting box, and the mounting box has an installation groove inside, with two columnar grooves on one side of the installation groove.
[0016] As a further description of the above technical solution:
[0017] A fastening spring is fixedly connected inside the columnar groove, and a thrust block is fixedly connected to one end of the fastening spring.
[0018] As a further description of the above technical solution:
[0019] An extrusion plate is fixedly connected to one side of each of the two thrust blocks, a limit ring is fixedly connected to the inner wall of the columnar groove, an installation block is slidably connected inside the installation groove, and a filter plate is fixedly connected to one side of the installation block.
[0020] This utility model has the following beneficial effects:
[0021] 1. This utility model reduces the size of the rust removal device by setting up the oil delivery component. When removing rust from steel bar nodes, it is convenient for personnel to carry the device to higher steel bar nodes for rust removal operations, eliminating the need for manual back-and-forth movement of the rust removal device, thus saving time spent on moving the device and helping to improve rust removal efficiency. The bamboo-joint tube facilitates adjustment of the general angle of oil spraying, while also providing a certain supporting force. Furthermore, the sliding sleeve facilitates fine adjustment of the oil spraying angle of the annular tube, thereby meeting the work requirements of rust removal.
[0022] 2. This utility model, through the setting of the filter component, helps to filter the rust-removing oil inside the electric spray gun during rust removal, which helps to reduce the small impurities and solids in the rust-removing oil, thus reducing the phenomenon of clogging when the oil nozzle is spraying oil. Furthermore, with the help of the mounting box and mounting block, it is easy to disassemble the filter plate, so that the filter plate can be replaced according to its usage and clogging status. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;
[0024] Figure 2 This is a schematic diagram of the externally threaded pipe structure proposed in this utility model;
[0025] Figure 3 This is a partial structural diagram of the internally threaded pipe connection proposed in this utility model;
[0026] Figure 4 This is a schematic diagram of the fixing ring structure proposed in this utility model;
[0027] Figure 5 This is a schematic diagram of the sliding sleeve structure proposed in this utility model;
[0028] Figure 6 This is a schematic diagram of the fixing rod structure proposed in this utility model;
[0029] Figure 7 This is a schematic cross-sectional view of the mounting box proposed in this utility model;
[0030] Figure 8 This is a schematic diagram of the mounting block structure proposed in this utility model.
[0031] Legend:
[0032] 1. Electric spray gun; 2. External threaded tube; 3. Internal threaded tube; 4. Transparent oil delivery tube; 5. Bamboo joint tube; 6. Folded tube; 7. Ring tube; 8. Injector nozzle; 9. Connecting rod; 10. Sliding sleeve; 11. Fixing ring; 12. Threaded hole; 13. Stud; 14. Knob; 15. Fixing rod; 16. Mounting box; 17. Mounting groove; 18. Columnar groove; 19. Fastening spring; 20. Thrust block; 21. Extrusion plate; 22. Limiting ring; 23. Mounting block; 24. Filter plate. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0034] As attached Figure 1-8 As shown, one embodiment of this utility model is provided: a device for rust prevention of spliced rebar joints, including an electric spray gun 1, with an oil delivery assembly provided on one side of the electric spray gun 1;
[0035] The oil delivery assembly includes an externally threaded pipe 2, which is connected to the output end of the electric spray gun 1. An internally threaded pipe 3 is connected to the external thread of the externally threaded pipe 2. One end of the internally threaded pipe 3 is connected to a transparent oil delivery pipe 4 and a bamboo-joint pipe 5. The bamboo-joint pipe 5 is located outside the transparent oil delivery pipe 4. A folded pipe 6 is connected to one end of the transparent oil delivery pipe 4 and the bamboo-joint pipe 5. An annular pipe 7 is connected to one end of the folded pipe 6. Multiple oil nozzles 8 are connected to the inner wall of the annular pipe 7. The externally threaded pipe 2 is easy to connect with the internally threaded pipe 3. The bamboo-joint pipe 5 is easy to provide a certain support force. The folded pipe 6 is easy to stretch and fold with the deflection of the annular pipe 7. The electric spray gun 1 is easy to store rust-preventive oil while outputting power.
[0036] As attached Figure 4 As shown, a connecting rod 9 is fixedly connected to the lower surface of the annular tube 7, and a sliding sleeve 10 is fixedly connected to one end of the connecting rod 9. A fixing ring 11 is fixedly connected to the lower surface of the bamboo joint tube 5. The sliding sleeve 10 is slidably connected to the outside of the fixing ring 11, and the fixing ring 11 facilitates the sliding of the sliding sleeve 10.
[0037] As attached Figure 5 As shown, a threaded hole 12 is provided on one side of the sliding sleeve 10 to facilitate the installation of the stud 13.
[0038] As attached Figure 4 As shown, a stud 13 is threaded inside the threaded hole 12, and a knob 14 is fixedly connected to one end of the stud 13. The stud 13 is used to fix the sliding sleeve 10 after it has been moved.
[0039] As attached Figure 6 As shown, a filter assembly is provided inside the externally threaded pipe 2. The filter assembly includes a fixing rod 15, which is fixedly connected inside the externally threaded pipe 2. One end of the fixing rod 15 is fixedly connected to a mounting box 16, and the fixing rod 15 is used to install the mounting box 16.
[0040] As attached Figure 7As shown, the mounting box 16 has a mounting groove 17 inside. Two columnar grooves 18 are opened on one side of the mounting groove 17. A fastening spring 19 is fixedly connected inside the columnar groove 18. A push block 20 is fixedly connected to one end of the fastening spring 19. A pressing plate 21 is fixedly connected to one side of the two push blocks 20. A limit ring 22 is fixedly connected to the inner wall of the columnar groove 18. The columnar groove 18 facilitates the installation of the fastening spring 19 and the retraction of the push block 20. Under the pushing action of the fastening spring 19, the pressing plate 21 can push the mounting block 23 on one side to make it installed and secure.
[0041] As attached Figure 8 As shown, an installation block 23 is slidably connected inside the installation groove 17, and a filter plate 24 is fixedly connected to one side of the installation block 23. The installation block 23 is easy to connect with the installation groove 17 and is installed inside the installation box 16. The filter plate 24 is convenient for filtering the rust-preventive oil.
[0042] Working principle: When using this utility model, the user manually moves it to a location close to the rebar node. First, the oil reservoir inside the electric spray gun 1 is filled with anti-rust oil. Then, according to the usage requirements and the angle of holding the electric spray gun 1, the annular tube 7 is finely adjusted by turning the knob 14. Under the action of the threaded hole 12, one end of the stud 13 is separated from one side of the fixing ring 11, causing the sliding sleeve 10 to be released from fixation. Then, the sliding sleeve 10 is slid on the fixing ring 11, thereby causing the connecting rod 9 to... The annular tube 7 deflects and the folded tube 6 stretches. The angle of the annular tube 7 is finely adjusted. After the adjustment is appropriate, the knob 14 is turned in the opposite direction, which drives the stud 13 to press against one side of the fixing ring 11, thereby fixing the annular tube 7. Then the annular tube 7 is put on the outside of the steel bar node. Under the action of the bamboo tube 5, the annular tube 7 is supported. Then the electric spray gun 1 is pressed. Under its force, the rust-preventive oil is delivered to the inside of the annular tube 7 through the transparent oil supply tube 4, and then sprayed out by the spray nozzle 8 for rust prevention.
[0043] When the rust-preventive oil passes through the transparent oil pipe 4, it will be filtered by the filter plate 24. When the filter plate 24 needs to be disassembled and cleaned, the inner threaded pipe 3 is turned to separate it from the outer threaded pipe 2, exposing the filter plate 24. Then the filter plate 24 is pulled up, causing the filter plate 24 to drive the mounting block 23 to slide inside the mounting groove 17. The mounting block 23 slowly slides out of one side of the extrusion plate 21, thereby completing the disassembly of the filter plate 24 for maintenance and cleaning.
[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 rust prevention of spliced rebar joints, comprising an electric spray gun (1), characterized in that: An oil delivery assembly is provided on one side of the electric spray gun (1); The oil delivery assembly includes an externally threaded pipe (2), which is connected to the output end of an electric spray gun (1). An internally threaded pipe (3) is connected to the external thread of the externally threaded pipe (2). A transparent oil delivery pipe (4) and a bamboo joint pipe (5) are connected to one end of the internally threaded pipe (3). The bamboo joint pipe (5) is located outside the transparent oil delivery pipe (4). A folded pipe (6) is connected to one end of the transparent oil delivery pipe (4) and the bamboo joint pipe (5). An annular pipe (7) is connected to one end of the folded pipe (6). Multiple oil nozzles (8) are connected to the inner wall of the annular pipe (7).
2. The device for rust prevention of spliced rebar joints according to claim 1, characterized in that: A connecting rod (9) is fixedly connected to the lower surface of the annular tube (7), and a sliding sleeve (10) is fixedly connected to one end of the connecting rod (9). A fixing ring (11) is fixedly connected to the lower surface of the bamboo tube (5), and the sliding sleeve (10) is slidably connected to the outside of the fixing ring (11).
3. The device for rust prevention of spliced rebar joints according to claim 2, characterized in that: A threaded hole (12) is provided on one side of the sliding sleeve (10), and a stud (13) is threaded inside the threaded hole (12). A knob (14) is fixedly connected to one end of the stud (13).
4. The device for rust prevention of spliced rebar joints according to claim 1, characterized in that: The internal part of the externally threaded tube (2) is provided with a filter assembly, which includes a fixing rod (15) and is fixedly connected to the internal part of the externally threaded tube (2).
5. The device for rust prevention of spliced rebar joints according to claim 4, characterized in that: One end of the fixing rod (15) is fixedly connected to the mounting box (16), and the mounting box (16) has an installation groove (17) inside, and two columnar grooves (18) are opened on one side of the mounting groove (17).
6. The device for rust prevention of spliced rebar joints according to claim 5, characterized in that: A fastening spring (19) is fixedly connected inside the columnar groove (18), and a thrust block (20) is fixedly connected to one end of the fastening spring (19).
7. The device for rust prevention of spliced rebar joints according to claim 6, characterized in that: An extrusion plate (21) is fixedly connected to one side of the two thrust blocks (20), a limit ring (22) is fixedly connected to the inner wall of the columnar groove (18), an installation block (23) is slidably connected inside the installation groove (17), and a filter plate (24) is fixedly connected to one side of the installation block (23).
Citation Information
Patent Citations
Reinforcing steel bar rust-proof treatment device
CN218132841U