Manhole door of coal feeder

Abstract

The utility model provides a coal feeder manhole door, and relates to the technical field of coal feeder machinery, the coal feeder manhole door comprises a door frame, the door frame is provided with an opening, the top of the door frame is provided with a rotating rod, and the rotating rod is rotatably connected with the door frame; the door plate is used for covering the opening; the fixing assembly is connected to one side of the door plate and comprises a connecting arm and a rotating wheel, one end of the connecting arm is rotationally connected with the bottom of the door frame, the rotating track of the other end of the connecting arm passes through the top of the door frame, the connecting arm comprises a left arm body and a right arm body, and the left arm body and the right arm body are connected through the rotating wheel. The rotating wheel is rotatably connected to the rotating rod, the top of the left arm and the top of the right arm are connected to form a fixed face, the rotating rod can penetrate through the fixed face to be rotatably connected with the rotating wheel, and the manhole door is convenient to disassemble and assemble and good in sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of coal feeder machinery, in particular to a manhole door for a coal feeder. Background Art

[0002] Coal feeders are widely used in coal pulverizing systems of thermal power generating units. When coal is blocked at the coal outlet of the coal feeder, the operation of the coal feeder and coal pulverizer can be stopped, and the manhole door of the coal feeder can be opened to clear the blockage manually.

[0003] In the prior art, the manhole door of the coal feeder is often fixed to the coal feeder with screws and bolts. This fixing method is troublesome to open and close, has poor sealing effect, takes a long time to connect and disassemble, and install, and cannot meet the needs during emergency repairs. We now propose a new type of manhole door for coal feeder to solve the above problems. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provides a coal feeder manhole door to solve the problems of the trouble of opening and closing the coal feeder manhole door in the prior art.

[0005] In order to achieve the above purpose and other purposes, the utility model is implemented by including the following technical solutions: the utility model provides a coal feeder manhole door, the coal feeder manhole door comprising: a door frame, an opening is opened on the door frame, a rotating rod is arranged on the top of the door frame, the rotating rod and the door frame are rotatably connected; a door panel for covering the opening; and a fixing component, the fixing component is connected to one side of the door panel, the fixing component comprises a connecting arm and a rotating wheel, one end of the connecting arm is rotatably connected to the bottom of the door frame, and the rotating trajectory of the other end of the connecting arm passes through the top of the door frame, the connecting arm comprises a left arm and a right arm, the rotating wheel is rotatably connected to the rotating rod, the tops of the left arm and the right arm are connected to form a fixed surface, and the rotating rod can pass through the fixed surface and be rotatably connected to the rotating wheel.

[0006] In one embodiment, the fixing assembly includes a first fixing assembly and a second fixing assembly, and the first fixing assembly and the second fixing assembly are symmetrically arranged on both sides of the central axis of the door panel.

[0007] In one embodiment, an unclosed connecting groove is provided on the fixing surface.

[0008] In one embodiment, a first mounting seat is provided at the bottom of the door frame, a first connecting rod is connected to the first mounting seat, and the bottom of the connecting arm is rotatably connected to the first connecting rod.

[0009] In one embodiment, a second mounting seat is provided on the door panel, a second connecting rod is connected to the second mounting seat, and the second connecting rod is connected to the connecting arm.

[0010] In one embodiment, a third mounting seat is provided on the top of the door frame, a third connecting rod is movably connected to the third mounting seat, and the rotating rod is threadedly connected to the third connecting rod.

[0011] In one embodiment, the inner side of the fixing surface is recessed to form a groove, and the groove accommodates the third mounting seat.

[0012] In one embodiment, an observation window is provided on the door panel.

[0013] In one embodiment, the connecting arm and the door panel are connected via the second mounting seat and a second connecting rod.

[0014] The utility model provides a coal feeder manhole door. Compared with the prior art, the utility model has the following beneficial effects: the structure of the coal feeder manhole door adopts a hand wheel type to close or open the door panel of the manhole door, and the two connecting arms arranged on the door panel can also bear the weight of the door panel on the manhole door. The door panel is provided with a scraper observation window, which can conveniently observe the working condition and fault condition of the coal feeder surface. In addition, the door panel adopts a three-dimensional structure as a whole, which is not easy to deform at any time, thereby improving the sealing effect of the manhole door. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a front view of a manhole door in one embodiment of the utility model.

[0016] Figure 2 Shown is a front view of a manhole door in yet another embodiment of the present utility model.

[0017] Figure 3 Shown is a schematic structural diagram of the manhole door of the utility model when it is opened.

[0018] Figure 4 It shows the cross-sectional connection relationship diagram of the rotating wheel and the rotating rod in one embodiment of the utility model.

[0019] Figure 5 It is a schematic structural diagram of a connecting arm in one embodiment of the utility model.

[0020] Figure 6 It is a diagram showing the outer structure of a connecting arm in another embodiment of the present invention.

[0021] Figure 7 It is a structural diagram of the inner side of a connecting arm in another embodiment of the present invention.

[0022] Figure 8 Shown is a schematic structural diagram of the door panel and door frame of the utility model. DETAILED DESCRIPTION

[0023] See also Figures 1 to 8 The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0024] like Figure 1 and Figure 3 As shown, the utility model provides a manhole door for a coal feeder, which can be installed as a whole on the coal feeder. The manhole door includes a door frame 1, an opening 13 is provided on the door frame 1, and a rotating rod 4 is provided on the top of the door frame 1, and the rotating rod 4 can be rotatably connected to the door frame 1.

[0025] like Figure 1 As shown, the manhole door includes a door panel 2, and the door panel 2 and the door frame 1 can be connected together. The door panel 2 is used to cover the opening 13, and the door panel 2 can rotate around the door frame 1 to cover or open the opening 13.

[0026] like Figure 1 and Figure 4 As shown, the manhole door includes a fixing assembly 3, which is arranged on one side of the door panel 2. The fixing assembly 3 includes a connecting arm 31 and a rotating wheel 32. One end of the connecting arm 31 is rotatably connected to the bottom of the door frame 1, and the other end of the connecting arm 31 rotates through the top of the door frame 1. Specifically, when the door panel 2 is closed, the other end of the connecting arm 31 can be located at the top of the door frame 1. The connecting arm 31 can be connected to the door panel 2. The rotating wheel 32 is rotatably connected to the rotating rod 4. Further, the rotating rod 4 is a rotating rod 4 with a thread on the surface.

[0027] like Figure 2 and Figure 5As shown, in some embodiments, the connecting arm 31 includes a left arm and a right arm arranged in parallel, and the tops of the left arm and the right arm are connected to form a fixed surface 31a, and a through hole 31d may be provided on the fixed surface 31a. The rotating rod 4 may pass through the through hole 31d and be rotatably connected to the rotating wheel 32. When the door panel 2 is closed, one end of the fixed surface 31a is located on the door frame 1, and the other end of the fixed surface 31a is located on the door panel 2. Further, the fixed surface 31a is at least partially in contact with the door panel 2. In order to enhance stability, a reinforcing rod 33 may also be provided between the left arm and the right arm.

[0028] like Figure 6 As shown, in other embodiments, an unclosed connecting groove 31e is provided on the fixing surface 31a, for example, a U-shaped connecting groove 31e, and the connecting groove 31e is an unclosed structure. The rotating rod 4 can pass through the connecting groove 31e, and the connecting groove 31e can facilitate the rotating rod 4 to directly rotate upward to disengage from the connecting arm 31 to open the door panel 2 and rotate it downward.

[0029] like Figure 2 As shown, the fixing assembly 3 includes a first fixing assembly 3a and a second fixing assembly 3b, and the first fixing assembly 3a and the second fixing assembly 3b are symmetrically arranged on both sides of the central axis of the door panel 2. The two fixing assemblies 3 can share the weight of the door panel 2. The door panel 2 is provided with an observation window 8, and the observation window 8 can be made of glass.

[0030] like Figure 1 and Figure 3 As shown, in the present invention, the fixing assembly 3 can be manually rotated and loosened by the rotating wheel 32, and then the door panel 2 can be flipped over to open the manhole door, and the door panel 2 can be rotatably connected to the door frame 1.

[0031] like Figure 1 As shown, a plurality of mounting seats (11, 21, 12) and connecting members (5, 6, 7) are provided on the door frame 1 and the door panel 2, the mounting seats (11, 21, 12) may include two mounting seats (11, 21, 12), the connecting members (5, 6, 7) include connecting rods and nuts, the mounting seats (11, 21, 12) have mounting holes, a connecting rod is provided in the mounting holes, the connecting rod may be a cylindrical head bolt, further, the tail end of the bolt has threads, a nut is sleeved on the threads to form a stable connection.

[0032] Specifically, Figure 1 and Figure 5As shown, the bottom of the door frame 1 is provided with a first mounting seat 11, the first mounting seat 11 has a mounting hole, the mounting hole is provided with a first connecting rod 51, the first connecting rod 51 passes through the mounting hole and enters the through hole 31b on the connecting arm 31 and then passes through the connecting arm 31, and finally a nut 52 and the tail end of the first connecting rod 51 are threadedly connected to complete the connection between the bottom of the door frame 1 and the connecting arm 31. The rotational connection between the door panel 2 and the door frame 1 can be achieved through the first mounting seat 11 and the first connecting rod 51.

[0033] like Figure 1 and Figure 5 As shown, the connecting arm 31 is connected to one side of the door panel 2. Specifically, a second mounting seat 21 is provided on the door panel 2, and a second connecting rod 61 is connected to the second mounting seat 21. The second connecting rod 61 and the connecting arm 31 are connected via a through hole 31c, and a nut 62 is sleeved on one end of the second connecting rod 61.

[0034] like Figure 3 As shown, specifically, a third mounting seat 12 is provided at the top of the door frame 1, a third connecting rod 71 is connected to the third mounting seat 12, a nut 72 is sleeved at one end of the third connecting rod 71, and the rotating rod 4 is threadedly connected to the third connecting rod 71. In some embodiments, the rotating rod 4 is rotatably connected to the top of the door frame 1, and in some embodiments, the third connecting rod 71 is movably connected to the third mounting seat 12 to realize the rotation of the rotating rod 4.

[0035] like Figure 4 and Figure 5 , Figure 7 As shown, the inner side of the fixing surface 31a is recessed with a groove A, and the groove A can be convenient for accommodating the third mounting seat 12 and the third connecting rod 71 to strengthen the fastening. When the manhole door needs to cover the door panel 2, first, the door panel 2 covers the opening 13, and the rotating rod 4 is inserted into the through hole 31d on the fixing surface 31a. One end of the rotating rod 4 is placed against the door frame 1, and the rotating wheel 32 on the rotating rod 4 is rotated to squeeze the third mounting seat 12. Finally, the fixing nut 8 is screwed on to complete the closing operation of the manhole door. Furthermore, a gasket 9 is arranged between the rotating wheel 32 and the fixing surface 31a.

[0036] like Figure 7 As shown, further, the connecting groove 31e is communicated with the groove A.

[0037] like Figure 8As shown, the door panel 2 includes a panel 21 and a sealing plate 22 connected to the panel 21, the sealing plate 22 fills the opening 13, and a sealing frame 14 is raised around the opening 13. When the door panel 2 is covered, the sealing frame 14 is in contact with one side of the panel 21. Further, in order to strengthen the seal, a sealing strip is provided between the sealing frame 14 and the panel 21, and the sealing strip is a packing sealing strip.

[0038] Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value. The above embodiments are only illustrative of the principles and effects of the utility model, and are not used to limit the utility model. Anyone familiar with this technology can modify or change the above embodiments without violating the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. A coal feeder manhole door, characterized in that: The coal feeder manhole door comprises: A door frame, wherein an opening is formed on the door frame, a rotating rod is provided on the top of the door frame, and the rotating rod is rotatably connected to the door frame; A door panel, used to cover the opening; And a fixing component, the fixing component is connected to one side of the door panel, the fixing component includes a connecting arm and a rotating wheel, one end of the connecting arm is rotatably connected to the bottom of the door frame, and the rotating trajectory of the other end of the connecting arm passes through the top of the door frame. The connecting arm includes a left arm and a right arm, and the rotating wheel is rotatably connected to the rotating rod. The tops of the left arm and the right arm are connected to form a fixing surface, and the rotating rod can pass through the fixing surface and be rotatably connected to the rotating wheel.

2. The coal feeder manhole door according to claim 1, characterized in that: The fixing assembly includes a first fixing assembly and a second fixing assembly, and the first fixing assembly and the second fixing assembly are symmetrically arranged on both sides of the central axis of the door panel.

3. The coal feeder manhole door according to claim 1, characterized in that: The fixing surface is provided with an unclosed connecting groove.

4. The coal feeder manhole door according to claim 1, characterized in that: A first mounting seat is arranged at the bottom of the door frame, a first connecting rod is connected to the first mounting seat, and the bottom of the connecting arm is rotatably connected to the first connecting rod.

5. The coal feeder manhole door according to claim 1, characterized in that: The door panel is provided with a second mounting seat, the second mounting seat is connected with a second connecting rod, and the second connecting rod is connected to the connecting arm.

6. The coal feeder manhole door according to claim 1, characterized in that: A third mounting seat is arranged on the top of the door frame, a third connecting rod is movably connected to the third mounting seat, and the rotating rod is threadedly connected to the third connecting rod.

7. The coal feeder manhole door according to claim 6, characterized in that: The inner side of the fixing surface is recessed to form a groove, and the groove accommodates the third mounting seat.

8. The coal feeder manhole door according to claim 1, characterized in that: An observation window is arranged on the door panel.

9. The coal feeder manhole door according to claim 1, characterized in that: A sealing strip is arranged between the door panel and the door frame.

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