Coke oven lower spray pipe cock dismounting tool
By designing a tool for removing the plug of the coke oven lower nozzle and adopting a top-down removal method, the problem of laborious and unsafe plug removal in the existing technology has been solved, achieving efficient and safe plug removal and reducing labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-03
AI Technical Summary
The existing method for removing the lower nozzle plug of a coke oven is laborious and inefficient, and poses safety hazards, such as water accumulation, ash accumulation, and dust that can harm the health of workers.
A tool for removing the plug of the lower nozzle of a coke oven has been designed, including a rotating part and a removal part. The removal part is rotated by the handle and connecting pipe through a top-down removal method, and the depth is limited by the limiting rod to ensure safe and efficient removal.
It improved construction efficiency, reduced labor costs, ensured worker safety, and avoided health hazards caused by water, dust, and ash accumulation.
Smart Images

Figure CN223961244U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coke oven construction technology, and in particular to a tool for removing the plug of the lower spray pipe of a coke oven. Background Technology
[0002] During the on-site renovation and reconstruction of the coke oven, the existing lower spray pipes need to be reused, while the original valves need to be replaced with new ones after removal. Removing the original valves under the coke oven requires scaffolding and the use of wrenches to remove them one by one. However, this method is laborious and inefficient, requiring at least 2-3 people to work together during the process.
[0003] In actual operation, there may be situations where there is a lot of water and dust accumulation in the lower spray pipe. When construction workers are dismantling the lower part of the coke oven, the falling dust and water can easily cause damage to the workers' eyes.
[0004] Therefore, developing a simple coke oven lower nozzle plug removal tool that will not harm operators is one of the important problems that needs to be solved. Utility Model Content
[0005] In view of the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a tool for removing the lower nozzle plug of a coke oven.
[0006] To solve the above problems, the present invention adopts the following technical solution: a tool for removing the plug of a coke oven lower nozzle, comprising a rotating part, wherein the bottom of the rotating part is fixedly connected to a removal part, and the shape of the removal part is adapted to the shape of the plug; when the removal part is in conjunction with the lower nozzle, the rotating part is twisted to drive the removal part connected thereto to rotate, and the plug is removed by removing it from top to bottom.
[0007] The rotating part includes a handle for gripping, which is connected to the disassembly part via a connecting tube, which is a straight tube.
[0008] The handle and the connecting tube are connected in a T-shape.
[0009] It includes a reinforcing rib, the two ends of which are connected to the handle and the connecting tube, respectively.
[0010] The dismantling part is a short section of square steel or a nut.
[0011] Includes a limiting rod, which limits the depth to which the rotating part penetrates the lower nozzle. Specifically, the limiting height is 8-10cm higher than the distance from the bottom of the lower nozzle to the valve.
[0012] The handle and connecting rod are made of steel pipe, steel bar or bar.
[0013] The handle and connecting tube have a wall thickness greater than 2.8 mm.
[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:
[0015] 1. This application uses a rotating part with a dismantling part at the bottom of the rotating part. The valve is dismantled from bottom to top using a wrench. This top-down dismantling method meets the requirements for the dismantling of the lower nozzle valve, and to a certain extent ensures the work efficiency and construction safety of workers. It is simple to manufacture, easy to obtain local materials, highly operable, and saves labor costs. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the plug removal tool according to an embodiment of this application;
[0017] Among them, 1. handle, 2. connecting tube, 3. disassembly part, and 4. reinforcing rib. Detailed Implementation
[0018] The technical solution of this utility model will be further described clearly and in detail below with reference to the embodiments and accompanying drawings.
[0019] Example
[0020] Please see Figure 1 A tool for removing a plug from a coke oven lower nozzle is provided, comprising a rotating part, the bottom of which is fixedly connected to a removal part 3, the shape of which is adapted to the shape of the plug; when the removal part 3 is engaged with the lower nozzle, the rotating part is twisted to drive the removal part 3 connected thereto to rotate, and the plug is removed by removing it from top to bottom.
[0021] The rotating part includes a handle 1 for gripping, which is connected to the disassembly part 3 via a connecting pipe 2. The connecting pipe 2 is a straight pipe, and the handle 1 and the connecting pipe 2 are connected in a T-shape.
[0022] In some preferred embodiments, a reinforcing rib 4 is included, with its two ends connected to the handle 1 and the connecting tube 2, respectively. The reinforcing rib 4 further improves the structural stability of the rotating part and enhances the safety of operators.
[0023] Example 1
[0024] In some embodiments, since there is no suitable steel pipe material available at the construction site for making the tool, the material of the tool can be replaced. The steel pipe handle 1 and the connecting pipe 2 can be replaced by steel bars or rods.
[0025] In some preferred embodiments, the handle 1 and the connecting tube 2 are made of steel pipe, making them easier to use.
[0026] In some preferred embodiments, the wall thickness of the handle 1 and the connecting tube 2 is greater than 2.8 mm.
[0027] Example 2
[0028] In some embodiments, the removal part 3 can be replaced by a short section of square steel or a nut. Specifically, a coke oven lower nozzle plug removal tool includes a short section of square steel fixedly connected to the bottom of the rotating part, the shape of the short section of square steel being adapted to the shape of the plug; when the short section of square steel is in conjunction with the lower nozzle, the rotating part is twisted to drive the short section of square steel connected thereto to rotate, and the plug is removed by a top-to-bottom removal method.
[0029] The rotating part includes a handle 1 for gripping, which is connected to the disassembly part 3 via a connecting pipe 2. The connecting pipe 2 is a straight pipe, and the handle 1 and the connecting pipe 2 are connected in a T-shape.
[0030] A simple limit rod can also be added to increase safety. It is set on the rod body at a height that is 8cm-10cm higher than the hole depth to prevent hand injury from excessive force.
[0031] Finally, it should be pointed out that the above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.
Claims
1. A tool for removing the plug of a coke oven lower nozzle, characterized in that, It includes a rotating part, the bottom of which is fixedly connected to a dismantling part (3), the shape of which is adapted to the shape of the valve; when the dismantling part (3) is in conjunction with the lower spray pipe, the rotating part is twisted to drive the dismantling part (3) connected to it to rotate, and the valve is dismantled by dismantling from top to bottom.
2. The coke oven lower nozzle plug removal tool according to claim 1, characterized in that, The rotating part includes a handle (1) for holding, which is connected to the disassembly part (3) via a connecting pipe (2), which is a straight pipe.
3. The coke oven lower nozzle plug removal tool according to claim 2, characterized in that, The handle (1) and the connecting tube (2) are connected in a T-shape.
4. A tool for removing the lower nozzle plug of a coke oven according to claim 2 or 3, characterized in that, It includes a reinforcing rib (4), the two ends of which are connected to the handle (1) and the connecting tube (2) respectively.
5. The coke oven lower nozzle plug removal tool according to claim 1, characterized in that, The dismantling part (3) is a short section of square steel or a nut.
6. The coke oven lower nozzle plug removal tool according to claim 1, characterized in that, Includes a limiting rod, which limits the depth to which the rotating part penetrates the lower nozzle. Specifically, the limiting height is 8-10cm higher than the distance from the bottom of the lower nozzle to the valve.
7. A tool for removing the lower nozzle plug of a coke oven according to claim 2 or 3, characterized in that, The handle (1) and connecting rod are steel pipes, reinforcing bars or rods.
8. The coke oven lower nozzle plug removal tool according to claim 7, characterized in that, The handle (1) and connecting tube (2) have a wall thickness greater than 2.8 mm.