Flange blind plate with rotary identification
By designing a flange blind plate with built-in rotating markings, the problems of markings being difficult to find and easily damaged were solved, achieving both visibility and durability of the markings and improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-07
AI Technical Summary
The markings on existing flange blind flanges are not easy to spot, are easily lost or damaged, and pose a safety hazard.
Design a flange blind plate with a built-in rotating label, including a blind plate, a handle, a handle nut, a rotating handle fixing block, and a label plate. The label plate is made of steel plate and can rotate 360°, making it suitable for viewing from various angles.
It improves the visibility and durability of the signs, prevents them from being lost or damaged, and increases operational efficiency.
Smart Images

Figure CN224093869U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flange blind flange technology, specifically a flange blind flange with a built-in rotating marking. Background Technology
[0002] When the equipment is under maintenance, blind flanges need to be installed on the connected media pipelines to reliably isolate the media source in order to ensure the safety of the maintenance. Generally, blind flanges are made by cutting and grinding flat plates according to the specifications. For easy installation and handling, a "triangular" tail is reserved at the edge.
[0003] While the small protrusion on the blind flange makes it easy to remove during installation, it protrudes too little between the flanges after installation onto the pipe body, making it difficult to notice. To prevent misoperation, temporary signs printed on A4 paper need to be affixed near the flange. However, these paper signs are easily lost or damaged, especially on outdoor pipelines, due to environmental factors, posing a potential safety risk.
[0004] Therefore, a flange blind plate with built-in rotating markings is designed to solve the technical problems of existing markings being difficult to find, easy to lose, and easily damaged. Utility Model Content
[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a flange blind plate with a built-in rotating mark.
[0006] The technical solution adopted by this utility model to solve its technical problem is: a flange blind plate with a self-rotating mark, including a blind plate, a handle and a mark plate, a handle nut fixedly connected to the upper part of the handle, a rotating handle fixing block fixedly set in the lower middle part of the mark plate, a rotatable handle fixedly set below the rotating handle fixing block, and the rotatable handle being movably connected to the handle nut.
[0007] Specifically, the handle is trapezoidal, and the upper part of the handle is fixedly connected to the handle nut by welding.
[0008] Specifically, the signboard is rectangular and made of steel plate.
[0009] Specifically, the signboard and the rotating handle fixing block are fixedly connected by welding.
[0010] Specifically, the rotating handle fixing block and the rotatable handle are fixedly connected by welding.
[0011] Specifically, the screw with a rotatable handle is M12, and the handle nut is an M12 nut.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] The flange blind plate with built-in rotating markings designed in this utility model improves work efficiency by setting up a marking plate with built-in reminders, eliminating the need for secondary posting of reminders.
[0014] The flange blind plate with built-in rotating markings designed in this utility model is made of steel plate and is not easy to lose or damage. Attached Figure Description
[0015] Figure 1 This is the front view of a flange blind plate with a built-in rotating indicator.
[0016] like Figure 1 As shown: 1-Blind plate, 2-Handle, 3-Handle nut, 4-Rotating handle, 5-Rotating handle fixing block, 6-Identification plate. Detailed Implementation
[0017] The technical solutions of the present utility model will be described in further detail below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0018] like Figure 1 As shown, a flange blind plate with a built-in rotating mark includes a blind plate 1, a handle 2, and a mark plate 6. The upper part of the handle 2 is fixedly connected to a handle nut 3. The lower middle part of the mark plate 6 is fixedly provided with a rotating handle fixing block 5. The lower part of the rotating handle fixing block 5 is fixedly provided with a rotatable handle 4. The rotatable handle 4 is movably connected to the handle nut 3.
[0019] The handle 2 is trapezoidal, and the upper part of the handle 2 is fixedly connected to the handle nut 3 by welding.
[0020] The signboard 6 is rectangular and made of steel plate.
[0021] The identification plate 6 and the rotating handle fixing block 5 are fixedly connected by welding. The identification plate is yellow and has the words "Blind plate added" written in black on it.
[0022] The rotating handle fixing block 5 and the rotatable handle 4 are fixedly connected by welding.
[0023] The rotatable handle 4 is an M12 screw, and the handle nut 3 is an M12 nut.
[0024] The indicator labels are integrated with the grip handle and do not affect normal use.
[0025] The indicator can rotate 360°, making it suitable for viewing from various angles.
[0026] When using it, determine the pipe section that needs to be isolated, install the blind flange 1 with a built-in rotating mark at the pipe interface, and tighten it with bolts. At this time, the channel is completely cut off, and the isolation effect is achieved. Then, screw the mark plate 6 into the handle nut 3 on the blind flange 1 through the rotating handle 4, and then rotate the mark plate 6 to the required angle to achieve the warning effect.
[0027] During disassembly, first unscrew the label plate 6 from the handle nut 3, then unscrew the bolt at the pipe interface, then grab the handle 2 to lift the blind plate 1, and finally tighten the bolt at the pipe interface to complete the disassembly.
[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A flange blind plate with a built-in rotating marking, characterized in that, The system includes a blind plate, a handle, and an indicator plate. The upper part of the handle is fixedly connected to a handle nut. The lower middle part of the indicator plate is fixedly provided with a rotating handle fixing block. A rotatable handle is fixedly provided below the rotating handle fixing block. The rotatable handle is movably connected to the handle nut. The handle is trapezoidal, and the upper part of the handle is fixedly connected to the handle nut by welding; the label plate is rectangular and made of steel plate.
2. The flange blind plate with integrated rotating marking as described in claim 1, characterized in that, The marking plate and the rotating handle fixing block are fixedly connected by welding.
3. The flange blind plate with integrated rotating marking as described in claim 2, characterized in that, The rotating handle fixing block and the rotatable handle are fixedly connected by welding.
4. The flange blind plate with integrated rotating marking as described in claim 1, characterized in that, The rotatable handle is an M12 screw, and the handle nut is an M12 nut.