A device for feedback of a hot blast stove flue valve proximity switch
Patent Information
- Application Number
- CN202522258731.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-26
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-26
AI Technical Summary
由于阀门过大在开关动作时，阀门的晃动造成撞铁与接近开关距离过远无法接收信号，撞铁与接近开关距离过近时会损坏接近开关，接近开关与撞铁之间安全距离内才能正常反馈，过远过近都无法接收信号反馈
[0007]本实用新型的有益效果是：通过在阀体设置撞铁的导向槽，不会因撞铁的晃动造成接近开关无法接收信号的问题和损坏接近开关，减少了维修人员的任务量和节省了备件费用，结构简单、便于维护、便于加工、安装方便。
Smart Images
Figure CN224801064U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a device for feedback of proximity switch of hot blast stove flue valve, belonging to the technical field of metallurgical equipment maintenance devices. Background Technology
[0002] The flue valve of the hot blast stove is one of the important pieces of equipment in the hot blast stove. During normal operation, the central control switch indication relies on the feedback of the proximity switch, and the accuracy of the proximity switch feedback directly affects the stability of the equipment. If the valve is too large, the valve's movement during operation can cause the striker to be too far from the proximity switch, preventing signal reception. Conversely, if the striker is too close, the proximity switch may be damaged. Normal feedback is only possible within a safe distance between the proximity switch and the striker; both excessive distance and closeness result in no signal reception. When problems occur, maintenance personnel need to go to the site to inspect, adjust the striker position, or replace the proximity switch, leading to wasted spare parts and an increased workload for maintenance personnel. Summary of the Invention
[0003] The purpose of this utility model is to provide a proximity switch feedback device for a hot blast stove flue valve. By setting a guide groove for the impact iron in the valve body, the problem of the proximity switch failing to receive signals and damage to the proximity switch caused by the shaking of the impact iron is prevented. This reduces the workload of maintenance personnel and saves spare parts costs. The structure is simple, easy to maintain, easy to process, and easy to install, effectively solving the above-mentioned problems existing in the background art.
[0004] The technical solution of this utility model is: a device for proximity switch feedback of a hot blast furnace flue valve, comprising a valve frame, a guide plate, support legs, a support base plate, and a support bracket. The support legs are welded to the valve frame, and there are two support legs, the positions of which match the stroke of the hydraulic cylinder. The guide plate is welded between the two support legs, forming a guide groove between the guide plate and the two support legs. There are two support base plates, welded to the valve frame, the positions of which match the support legs. The support bracket is welded to the support base plate, and the proximity switch is mounted on the support base plate. A balance beam is fixed to the valve stem, one end of a striker is welded to the balance beam and moves up and down with the valve stem, and the other end of the striker matches the support bracket.
[0005] The support structure includes support one and support two. Support two is welded to the top of the support base plate, and support one is welded to the top of support two.
[0006] The position of the guide plate is matched with the sensing range of the proximity switch.
[0007] The beneficial effects of this utility model are: by setting a guide groove for the impact iron in the valve body, the problem of the proximity switch not being able to receive signals and the damage to the proximity switch caused by the shaking of the impact iron will not be prevented. This reduces the workload of maintenance personnel and saves spare parts costs. The structure is simple, easy to maintain, easy to process, and easy to install. Attached Figure Description
[0008] Figure 1 This is the front view of the present invention; Figure 2 This is the left view of the present invention; Figure 3 This is an assembly diagram of the present invention; In the diagram: 1. Valve frame; 2. Guide plate; 3. Support leg; 4. Support base plate; 5. Support support one; 6. Support support two; 7. Impact bar; 8. Balance beam; 9. Nut; 10. Valve stem; 11. Proximity switch; 12. Guide groove. Detailed Implementation
[0009] To make the purpose, technical solution, and advantages of the utility model embodiments clearer, the technical solution of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only a small part of the utility model embodiments, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the utility model without creative effort are within the protection scope of the utility model.
[0010] A proximity switch feedback device for a hot blast furnace flue valve includes a valve frame 1, a guide plate 2, support legs 3, a support base plate 4, and a support. The support legs 3 are welded to the valve frame 1, and there are two support legs 3. The positions of the two support legs 3 match the stroke of the hydraulic cylinder. The guide plate 2 is welded between the two support legs 3, forming a guide groove 12 between the guide plate 2 and the two support legs 3. There are two support base plates 4, which are welded to the valve frame 1. The positions of the support base plates 4 match the support legs 3. The support is welded to the support base plates 4, and the proximity switch 11 is mounted on the support base plates 4. A balance beam 8 is fixed to the valve stem 10, and one end of a striker 7 is welded to the balance beam 8, moving up and down with the valve stem 10. The other end of the striker 7 matches the support.
[0011] The support structure includes support one 5 and support two 6. Support two 6 is welded to the top of the support base plate 4, and support one 5 is welded to the top of support two 6.
[0012] The position of the guide plate 2 is matched with the sensing range of the proximity switch 11.
[0013] In practical applications, before manufacturing, guide plate 2, support leg 3, bracket base plate 4, bracket support one 5 and bracket support two 6 are cut according to the installation dimensions. After cutting, support leg 3 is welded to valve frame 1 according to the stroke of the oil cylinder. Guide plate 2 is then welded between the two support legs 3 according to the sensing range of proximity switch 11. Guide groove 12 is formed between guide plate 2 and the two support legs 3. Bracket base plate 4 is welded to valve frame 1 according to the dimensions. Bracket support two 6 is welded above bracket base plate 4 according to the dimensions. Bracket support one 5 is then welded to the top of bracket support two 6.
[0014] The proximity switch 11 is mounted on the bracket base plate 4. The balance beam 8 is fixed to the valve stem 10 by the nut 9. The striker 7 is welded to the balance beam 8 and moves up and down with the valve stem 10.
[0015] When the valve moves downward, the valve moves the valve stem 10, the valve stem 10 moves the balance beam 8, the balance beam 8 moves the striker 7, and the striker 7 moves downward in the guide groove 12. When the proximity switch 11 senses the striker 7, it sends a feedback that the valve is closed and proceeds to the next process.
[0016] When the valve moves upward, it drives the valve stem 10, which in turn drives the balance beam 8. The balance beam 8 then drives the striker 7, which moves downward within the guide groove 12. When the proximity switch 11 senses the striker 7, it signals that the valve is fully open and proceeds to the next step. The striker 7 moves upward within the guide groove 12, which is the sensing range of the proximity switch 11. When the valve vibrates during operation, the striker 7 will not deviate from the guide groove 12. This ensures the accuracy of the proximity switch 11's sensing and feedback, preventing the proximity switch 11 from failing to sense the striker 7 or damaging the switch due to valve vibration, thus resolving the problem mentioned in the background.
Claims
1. A device for feedback of proximity switch of flue valve in hot blast stove, characterized in that: The system includes a valve frame (1), a guide plate (2), support legs (3), a bracket base plate (4), and a bracket support. The support legs (3) are welded to the valve frame (1). There are two support legs (3), and the positions of the two support legs (3) match the stroke of the oil cylinder. The guide plate (2) is welded between the two support legs (3), and a guide groove (12) is formed between the guide plate (2) and the two support legs (3). There are two bracket base plates (4), which are welded to the valve frame (1). The positions of the bracket base plates (4) match the support legs (3). The bracket support is welded to the bracket base plate (4), and a proximity switch (11) is installed on the bracket base plate (4). The balance beam (8) is fixed to the valve stem (10). One end of the impact iron (7) is welded to the balance beam (8) and moves up and down with the valve stem (10). The other end of the impact iron (7) matches the bracket support.
2. The device for feedback of proximity switch of hot blast stove flue valve according to claim 1, characterized in that: The support includes support one (5) and support two (6). Support two (6) is welded above the support base plate (4), and support one (5) is welded to the top of support two (6).
3. The device for feedback of proximity switch of hot blast stove flue valve according to claim 1, characterized in that: The position of the guide plate (2) is matched with the sensing range of the proximity switch (11).