Easily switchable cold slag tap manhole door

Abstract

The utility model discloses a manhole door, the manhole door's door frame side wall is equipped with the lock catch mechanism, and one end of the pull rod is fixedly connected with the side along of manhole door, the lock catch mechanism is by the base plate, the guide rail, the bayonet lock, the push board and the pivot and is composed, one side of the base plate is fixedly connected with the door frame side wall of manhole door, and a pair of guide rails are fixed on the base plate, and the pivot is also equipped between the guide rail, and the middle section of pivot is rotatably connected with the bayonet lock, and the bayonet lock rotates around the pivot. The utility model has the advantages of (1) simplifying switch operation, improving efficiency, (2) not reducing safety reliability, (3) convenient operation, reducing labor intensity.

Description

Technical Field

[0001] This utility model belongs to the technical field of boiler maintenance equipment, and in particular relates to an easy-to-open and close manhole door for a cold slag machine. Background Technology

[0002] During the commissioning of the slag cooler, it is necessary to open the manhole to determine the internal operating status of the slag cooler or to clean it when the lower gate pipe is blocked by slag. However, the original manhole door is equipped with four locking screws, which need to be disassembled and reassembled each time the machine is opened or closed. This operation is cumbersome and inefficient. Moreover, if a safety problem occurs after opening, it is difficult to close the manhole. During operation, high-temperature slag has leaked out multiple times, causing personal injury or boiler shutdown. Therefore, it is necessary to study a safe, reliable and easy-to-operate safety lock for the slag cooler manhole. Summary of the Invention

[0003] To address the technical problem of difficulty in opening and closing manhole doors in the prior art, this utility model includes a manhole door. The manhole door has a locking mechanism on the side wall of its door frame. One end of a pull rod is fixedly connected to the side edge of the manhole door. The locking mechanism consists of a base plate, guide rails, a locking pin, a push plate, and a rotating shaft. One side of the base plate is fixedly connected to the side wall of the manhole door's door frame. A pair of guide rails are fixedly mounted on the base plate, and a rotating shaft is provided between the guide rails. The middle section of the rotating shaft is rotatably connected to the locking pin, which rotates around the rotating shaft.

[0004] In a preferred embodiment, a push plate is fixedly provided on the top of the locking pin, and the two sides of the push plate overlap the guide rails on both sides.

[0005] In a preferred embodiment, the other end of the lever is provided with a grip to facilitate the operation and pulling of the lever by the staff.

[0006] In a preferred embodiment, a handle is fixedly provided on the outer wall of the manhole door to facilitate the opening and closing of the manhole door by staff.

[0007] In a preferred embodiment, an endoscope is also fixedly installed on the manhole door, the endoscope penetrates the manhole door, and the endoscope is used to observe the internal condition of the slag cooler.

[0008] In a preferred embodiment, the horizontal height of the pull rod is the same as the guide rail groove in the guide rail, and when the manhole door is closed, the pull rod is restricted in the locking pin.

[0009] In a preferred embodiment, both ends of the rotating shaft are fixedly connected to the guide rail.

[0010] In a preferred embodiment, the movable end of the locking pin is an inclined surface, which facilitates the pull rod entering the locking pin's groove.

[0011] The beneficial effects of this utility model are: (1) The locking mechanism and pull rod are designed in synergy to replace the traditional multiple locking screws: when closing the manhole door, the pull rod is engaged in the locking pin slot, and the locking pin rotates around the pivot to achieve quick locking; when opening, pushing the push plate will drive the locking pin to rotate and unlock, without the need to repeatedly disassemble and reassemble the screws. Compared with the traditional structure, the steps and time of opening and closing operations are greatly reduced, and the efficiency of maintenance or cleaning operations is significantly improved; (2) The locking pin restricts the pull rod, and combined with the stable support of the guide rail and the rotating shaft, it can ensure that the manhole door is tightly closed when the slag cooler is running, effectively preventing the leakage of high temperature slag, avoiding personal injury or boiler shutdown accidents, and the safety will not be reduced compared with the use of screw. (3) The handle on the outer wall of the manhole door is easy for workers to grip and exert force. Combined with the grip design of the pull rod, it makes it easier to exert force when opening and closing the door. The push plate and guide rail of the locking mechanism have an overlapping structure, so that unlocking operation does not require additional tools, further reducing the intensity of manual labor, and is especially suitable for the need for rapid response during maintenance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the locking mechanism in this utility model.

[0014] Figure 3 This is a top view of the locking mechanism in this utility model.

[0015] Figure 4 This is a front view of the locking mechanism in this utility model.

[0016] Figure 5 This is a bottom view of the locking mechanism in this utility model.

[0017] Figure 6 This is a left view of the locking mechanism in this utility model.

[0018] Figure 7 This is a schematic diagram illustrating the usage process of this utility model.

[0019] In the diagram: 1. Manhole door; 2. Endoscope; 3. Handle; 4. Locking mechanism; 401. Base plate; 402. Guide rail; 403. Locking pin; 404. Push plate; 405. Rotating shaft; 5. Pull rod. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Example like Figure 1-6The easily openable manhole door of the slag cooler shown includes a manhole door 1. A locking mechanism 4 is provided on the side wall of the door frame of the manhole door 1. One end of a pull rod 5 is welded to the side edge of the manhole door 1. The locking mechanism 4 consists of a base plate 401, a guide rail 402, a locking pin 403, a push plate 404, and a rotating shaft 405. One side of the base plate 401 is welded to the side wall of the door frame of the manhole door 1. A pair of guide rails 402 are welded on the base plate 401. A rotating shaft 405 is also provided between the guide rails 402. The middle section of the rotating shaft 405 is rotatably connected to the locking pin 403. The locking pin 403 rotates around the rotating shaft 405.

[0022] Furthermore, a push plate 404 is welded to the top of the locking pin 403, and the two sides of the push plate 404 overlap the guide rails 402 on both sides.

[0023] The push plate 404 facilitates the operation of the staff to push the latch 403, and also prevents the latch 403 from continuing to rotate around the shaft 405 due to gravity when the manhole door 1 is in the open state, making operation easier.

[0024] Furthermore, the other end of the lever 5 is provided with a grip to facilitate the operation of the staff to pull the lever 5.

[0025] Furthermore, a handle 3 is fixedly provided on the outer wall of the manhole door 1 to facilitate the opening and closing of the manhole door 1 by staff.

[0026] Furthermore, an endoscope 2 is fixedly installed on the manhole door 1. The endoscope 2 penetrates the manhole door 1 and is used to observe the internal condition of the slag cooler.

[0027] Furthermore, the horizontal height of the pull rod 5 is the same as the guide rail groove in the guide rail 402. When the manhole door 1 is closed, the pull rod 5 is restricted within the latch 403.

[0028] Furthermore, both ends of the rotating shaft 405 are fixedly connected to the guide rail 402.

[0029] Furthermore, the movable end of the locking pin 403 is an inclined surface, which facilitates the pull rod 5 entering the slot of the locking pin 403.

[0030] like Figure 1 and Figure 7As shown, the process of using this device is as follows: When the manhole door 1 is in the normally closed state, the pull rod 5 is restricted in the slot of the latch 403. At this time, external force cannot open the manhole door 1. When it is necessary to open the manhole door 1, push the push plate 404 upward. The push plate 404 drives the latch 403 to rotate around the pivot 404. At this time, the pull rod 5 is not restricted by the latch 403. The operator can pull the pull rod 5 outward to open the manhole door 1. When it is necessary to close the manhole door 1, push the pull rod 5 into the guide rail slot of the guide rail 402, and then push the push plate 404 upward. The pull rod 5 falls to the slot of the latch 403. Put down the push plate 404 so that the slot of the latch 403 locks the pull rod 5. At this time, the manhole door 1 is closed.

Claims

1. An easy-to-open manhole door for a slag cooler, comprising a manhole door (1), characterized in that, The manhole door (1) is provided with a latching mechanism (4) on the side wall of the door frame. The side edge of the manhole door (1) is fixedly connected to one end of the pull rod (5). The latching mechanism (4) consists of a base plate (401), a guide rail (402), a latch (403), a push plate (404), and a rotating shaft (405). One side of the base plate (401) is fixedly connected to the side wall of the door frame of the manhole door (1). A pair of guide rails (402) are fixedly provided on the base plate (401). A rotating shaft (405) is also provided between the guide rails (402). The middle section of the rotating shaft (405) is rotatably connected to the latch (403). The latch (403) rotates around the rotating shaft (405).

2. The easy-to-open manhole door for a slag cooler according to claim 1, characterized in that, The top of the latch (403) is fixedly provided with a push plate (404), and the two sides of the push plate (404) overlap the guide rails (402) on both sides.

3. The easy-to-open manhole door for a slag cooler according to claim 1, characterized in that, The other end of the lever (5) is provided with a grip, which makes it easy for staff to operate and pull the lever (5).

4. The easy-to-open manhole door for a slag cooler according to claim 1, characterized in that, A handle (3) is fixedly provided on the outer wall of the manhole door (1) to facilitate the opening and closing of the manhole door (1) by the staff.

5. The easy-to-open manhole door for a slag cooler according to claim 1, characterized in that, An endoscope (2) is also fixedly installed on the manhole door (1). The endoscope (2) passes through the manhole door (1) and is used to observe the internal condition of the slag cooler.

6. The easy-to-open manhole door for a slag cooler according to claim 1, characterized in that, The horizontal height of the pull rod (5) is the same as the guide rail groove in the guide rail (402). When the manhole door (1) is closed, the pull rod (5) is restricted in the latch (403).

7. The easy-to-open manhole door for a slag cooler according to claim 1, characterized in that, The two ends of the rotating shaft (405) are fixedly connected to the guide rail (402).

8. The easy-to-open manhole door for a slag cooler according to claim 1, characterized in that, The movable end of the latch (403) is an inclined surface, which facilitates the pull rod (5) to enter the slot of the latch (403).

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