Manhole door with embedded structure

Abstract

The manhole door of the embedded structure comprises a door frame and a cover plate installed on the outer side of the door frame, a plurality of bolts, gaskets and nuts are arranged on the outer side of the cover plate, the bolts penetrate through the cover plate and the door frame and are in threaded connection with the nuts, the gaskets are arranged on the outer walls of the bolts in a sleeved mode, and the nuts are arranged on the cover plate. The two sides of the gasket make contact with the outer wall of the nut and the outer wall of the door frame correspondingly, and the cover plate and the left side of the door frame are connected with a rotating shaft. The door is good in sealing, strong in heat insulation and convenient to enter and exit.

Description

Technical Field

[0001] The utility model belongs to the technical field of manhole doors, and in particular relates to a manhole door with an embedded structure. Background Art

[0002] With the acceleration of my country's economic development, the demand for electricity in all walks of life is also increasing day by day. Therefore, the country has built a large number of thermal power generation equipment, and the desulfurization and denitrification systems of steel plants have also been installed in large quantities. These projects are randomly equipped with various manhole doors. After running for a period of time, these manhole doors have more or less some problems, such as small opening space of the manhole door, inconvenient entry and exit; poor sealing effect, gas leakage; poor insulation and other problems. These problems bring a lot of inconvenience to users' daily use, and at the same time, these problems also bring great hidden dangers to the safe operation of the equipment. Therefore, it is urgent to design and develop an embedded structure manhole door to help users solve these problems.

[0003] However, there are some problems with the existing technology: the manhole doors currently used in smoke and air systems, powder making systems, desulfurization, denitrification and other equipment either have small inlet sizes, which are inconvenient to enter and exit; or have poor insulation effects and overheated outer surfaces; or have poor sealing effects and are prone to air leakage. Therefore, we propose an embedded structure manhole door. Utility Model Content

[0004] In view of the problems existing in the above-mentioned technologies, the utility model provides an embedded structure manhole door, which solves the problems that the manhole doors currently provided for smoke and air systems, powder making systems, desulfurization, denitrification and other equipment are either small in size and inconvenient for entry and exit; or poor in insulation effect and overheating of the outer surface; or poor in sealing effect and easy to leak.

[0005] The utility model is implemented as follows: an embedded structure manhole door includes a door frame, and a cover plate installed on the outside of the door frame, a plurality of bolts, washers and nuts are arranged on the outside of the cover plate, the bolts penetrate the cover plate and the door frame and are threadedly connected with the nuts, and the washers are sleeved on the outer walls of the bolts, the two sides of the washers are respectively in contact with the outer walls of the nuts and the outer walls of the door frame, and the cover plate is connected to the left side of the door frame with a rotating shaft.

[0006] As a preferred embodiment of the utility model, a handle is connected to the outer wall of the cover plate on one side away from the door frame, and two reinforcing ribs and two reinforcing plates are connected to the outer wall of the cover plate on one side away from the door frame, and the two reinforcing plates are located between the reinforcing ribs.

[0007] As a preferred embodiment of the present invention, two connecting handle groups are connected to the outer wall of the door frame on one side away from the cover plate, and the connecting handle groups are located on the outside of the two reinforcing ribs.

[0008] As a preferred embodiment of the utility model, both ends of the rotating shaft pass through the reinforcing plate, the reinforcing ribs and the connecting handle group, and both ends of the rotating shaft located at the connecting handle group are provided with threaded connection parts, the threaded connection parts are threadedly connected with nuts, and the nuts are in contact with the outer wall of the connecting handle group.

[0009] As a preferred embodiment of the present invention, the outer wall of the door frame is connected with a peripheral edge, and the peripheral edge is located on the outer side of the cover plate and contacts with the outer wall of the cover plate.

[0010] As a preferred embodiment of the present invention, one side of the cover plate extending into the door frame is connected to a sealing cover, and the interior of the sealing cover is filled with aluminum silicate refractory fiber felt.

[0011] As a preferred embodiment of the present invention, a plurality of sealing gaskets are connected to an outer wall on one side where the door frame and the cover plate meet.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model has good sealing. First, it adopts an embedded structure, and the manhole door panel is embedded in the frame. Second, a special sealing gasket is installed at the connection between the door frame and the cover plate. Third, a high-temperature sealant is applied to the surface of the cover plate door frame. After these measures, smoke and wind cannot overflow, thereby improving safety performance;

[0014] 2. The utility model has strong heat insulation, and the manhole door panel is filled with a special heat-insulating material, aluminum silicate refractory fiber felt, which has good heat insulation effect, so that the temperature of the outer wall of the manhole door is kept below the safe temperature to ensure the safety of personnel;

[0015] 3. The utility model is easy to enter and exit, and the manhole door can be rotated by the rotating shaft, which is very convenient for entry and exit, and is convenient for maintenance personnel, goods and tools to pass through, thereby improving safety. In an emergency, the speed of personnel evacuating from the air preheater is greatly increased, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram provided by an embodiment of the utility model;

[0017] Figure 2 It is a side view schematic diagram provided by an embodiment of the utility model;

[0018] Figure 3 It is a top view schematic diagram provided by an embodiment of the utility model;

[0019] Figure 4 The utility model embodiment provides Figure 3 Enlarged schematic diagram of area a in the middle.

[0020] In the figure: 1. door frame; 2. cover plate; 3. rotating shaft; 4. connecting handle group; 5. bolt; 6. washer; 7. nut; 8. sealing gasket; 9. edge; 10. handle; 11. reinforcement plate; 12. reinforcement rib; 13. aluminum silicate refractory fiber felt; 14. sealing cover. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0022] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0023] Embodiment 1:

[0024] like Figure 1 As shown, an embedded structure manhole door provided by an embodiment of the utility model comprises a door frame 1, and a cover plate 2 installed on the outside of the door frame 1, a plurality of bolts 5, washers 6 and nuts 7 are arranged on the outside of the cover plate 2, the bolts 5 penetrate the cover plate 2 and the door frame 1 and are threadedly connected with the nuts 7, and the washers 6 are sleeved on the outer walls of the bolts 5, and the two sides of the washers 6 are respectively in contact with the outer walls of the nuts 7 and the outer walls of the door frame 1, and the cover plate 2 is connected to the left side of the door frame 1 with a rotating shaft 3; the rotating shaft 3 is used to facilitate the rotation of the manhole door and the passage of the staff, and the surface of the manhole door is coated with a high-temperature resistant sealant, and the interior of the manhole door panel is filled with a heat-insulating material aluminum silicate refractory fiber felt 13, which effectively improves the heat resistance of the manhole door. In an emergency, the staff can effectively and quickly open the manhole door and pass through quickly, and the high-temperature resistance of the manhole door is utilized to improve the safety performance while ensuring the safety of the staff.

[0025] like Figure 2 As shown, a handle 10 is connected to the outer wall of the cover plate 2 away from the door frame 1, and two reinforcing ribs 12 and two reinforcing plates 11 are connected to the outer wall of the cover plate 2 away from the door frame 1, and the two reinforcing plates 11 are located between the reinforcing ribs 12; the handle 10 is provided to facilitate quick opening of the manhole door.

[0026] like Figure 2 and Figure 3As shown, the outer wall of the door frame 1 on one side away from the cover plate 2 is connected to two connecting handle groups 4, and the connecting handle groups 4 are located on the outside of the two reinforcing ribs 12; both ends of the rotating shaft 3 pass through the reinforcing plate 11, the reinforcing rib 12 and the connecting handle group 4, and both ends of the rotating shaft 3 located at the connecting handle group 4 are provided with threaded connection parts, and the threaded connection parts are threadedly connected with nuts 7, and the nuts 7 are in contact with the outer wall of the connecting handle group 4; the outer wall of the door frame 1 is connected to a surrounding edge 9, and the surrounding edge 9 is located on the outside of the cover plate 2 and in contact with the outer wall of the cover plate 2; the rotating shaft 3 is connected to the connecting handle group 4, the reinforcing plate 11 and the reinforcing rib 12, and is fixed by the nut 7, which is convenient for the disassembly and assembly of the rotating shaft 3 and the self-assembly of the cover plate 2 and the door frame 1.

[0027] like Figure 4 As shown, the side of the cover plate 2 extending into the interior of the door frame 1 is connected to a sealing cover 14, and the interior of the sealing cover 14 is filled with aluminum silicate refractory fiber felt 13; a plurality of sealing gaskets 8 are connected to the outer wall on one side where the door frame 1 and the cover plate 2 are connected; the high temperature resistance of the cover plate 2 is improved by setting the aluminum silicate refractory fiber felt 13, and the sealing gasket 8 is connected between the door frame 1 and the cover plate 2, and with the cooperation of the bolts 5 and the nuts 7, the sealing gasket 8 is compacted to improve the sealing between the door frame 1 and the cover plate 2.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An embedded structure manhole door, comprising a door frame (1), and a cover plate (2) installed outside the door frame (1), characterized in that: The outer side of the cover plate (2) is provided with a plurality of bolts (5), washers (6) and nuts (7); the bolts (5) penetrate the cover plate (2) and the door frame (1) and are threadedly connected with the nuts (7); the washers (6) are sleeved on the outer wall of the bolts (5); the two sides of the washers (6) are respectively in contact with the outer wall of the nuts (7) and the outer wall of the door frame (1); and the left side of the cover plate (2) and the door frame (1) is connected with a rotating shaft (3).

2. The embedded structure manhole door according to claim 1, characterized in that: The outer wall of the cover plate (2) on one side away from the door frame (1) is connected to a handle (10), and the outer wall of the cover plate (2) on one side away from the door frame (1) is connected to two reinforcing ribs (12) and two reinforcing plates (11), wherein the two reinforcing plates (11) are located between the reinforcing ribs (12).

3. The embedded structure manhole door according to claim 2, characterized in that: Two connection handle groups (4) are connected to the outer wall of the door frame (1) on one side away from the cover plate (2), and the connection handle groups (4) are located outside the two reinforcing ribs (12).

4. The embedded structure manhole door according to claim 1, characterized in that: Both ends of the rotating shaft (3) penetrate the reinforcing plate (11), the reinforcing rib (12) and the connecting handle group (4), and both ends of the rotating shaft (3) located at the connecting handle group (4) are provided with threaded connection parts, and the threaded connection parts are threadedly connected with nuts (7), and the nuts (7) are in contact with the outer wall of the connecting handle group (4).

5. The embedded structure manhole door according to claim 1, characterized in that: The outer wall of the door frame (1) is connected to a peripheral edge (9), and the peripheral edge (9) is located outside the cover plate (2) and in contact with the outer wall of the cover plate (2).

6. The embedded structure manhole door according to claim 1, characterized in that: The side of the cover plate (2) extending into the door frame (1) is connected to a sealing cover (14), and the interior of the sealing cover (14) is filled with aluminum silicate refractory fiber felt (13).

7. The embedded structure manhole door according to claim 1, characterized in that: A plurality of sealing pads (8) are connected to an outer wall on one side where the door frame (1) and the cover plate (2) meet.

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