Normal pressure tank manhole door

Abstract

The utility model belongs to the technical field of aluminum oxide, and particularly relates to a normal pressure tank manhole door which is provided with a through opening, the manhole door comprises a pressing plate, a door plate and a sealing gasket, the pressing plate is fixedly connected with the normal pressure tank, the pressing plate is provided with an opening, the pressing plate is arranged at the position of the through opening, the opening and the through opening are arranged in an aligned mode, and the sealing gasket is arranged on the door plate. The door plate is arranged on the outer side of the normal-pressure tank and rotationally connected with the normal-pressure tank, the sealing gasket is detachably arranged between the door plate and the pressing plate, a plurality of connecting holes I are formed in the periphery of the pressing plate, a plurality of connecting holes II are formed in the door plate, the connecting holes I and the connecting holes II are aligned, and a locking assembly is arranged on the door plate. The sealing gasket is made of flexible cloth, when the protruding block stretches into the supporting groove and is pressed by the clamping plate, the supporting groove is closed through the clamping plate and the protruding block, and the door plate and the pressing plate are closed, the sealing gasket can still close the opening and the through opening, when the door plate and the pressing plate are opened, the sealing gasket can be hung on the connecting rod, and secondary installation of workers is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum oxide, in particular to a manhole door for a normal pressure tank. Background Art

[0002] In the chemical industry, atmospheric pressure tanks are widely used in the storage, transportation, chemical reaction chambers, etc. of production material media. In the alumina industry, the materials stored in atmospheric pressure tanks generally have certain floating matter (impurities), or the materials themselves contain a large amount of impurities or red mud, and atmospheric pressure tanks need to be cleaned periodically.

[0003] The cleaning operation of atmospheric pressure tanks requires workers to enter through the manhole door. Traditional cleaning is manual cleaning. The design of the manhole door is mainly based on personnel entry and exit and safe ventilation. However, for atmospheric pressure tanks of larger sizes, manual cleaning requires a lot of time and energy. With the increasing requirements for maintenance progress, mechanized cleaning of atmospheric pressure tanks is proposed to make flat-bottomed atmospheric pressure tanks serve production faster and more efficiently. Traditional atmospheric pressure tanks are generally equipped with sealing gaskets at the manhole door. The sealing gaskets are connected by clamping. When cleaning the atmospheric pressure tank, the sealing gaskets can only be removed and reinstalled after the cleaning is completed. The installation process is very troublesome. Utility Model Content

[0004] In view of the technical problems existing in the background technology, the purpose of the utility model is to provide a manhole door for a normal pressure tank, which can not only ensure the sealing effect of the manhole door, but also prevent the sealing gasket from falling off after the manhole door is opened, thereby avoiding the need to reinstall the sealing gasket.

[0005] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0006] A manhole door for a normal pressure tank comprises a normal pressure tank and a manhole door arranged on the outer side of the normal pressure tank, wherein a through opening is arranged on the normal pressure tank, and the manhole door comprises a pressure plate, a door plate and a sealing gasket, wherein the pressure plate is fixedly connected to the normal pressure tank, an opening is arranged on the pressure plate, the pressure plate is arranged at the through opening position, and the opening and the through opening are arranged in alignment, the door plate is arranged on the outer side of the normal pressure tank and is rotatably connected to the normal pressure tank, the sealing gasket is detachably arranged between the door plate and the pressure plate, a plurality of connecting holes I are arranged around the pressure plate, a plurality of connecting holes II are arranged on the door plate, the connecting holes I and the connecting holes II are aligned, a locking assembly is arranged on the door plate, and the locking assembly is used to fix the sealing gasket on the inner wall of the door plate close to the side of the pressure plate.

[0007] Preferably, a plurality of connecting plates are provided on one side of the door panel, connecting plates are provided with connecting grooves I, connecting plates are arranged at the positions of connecting holes II, and connecting grooves I and connecting holes II are aligned.

[0008] Preferably, the locking assembly includes a card plate and connecting rods symmetrically arranged on the same side of the card plate, a connecting groove II is arranged inside the card plate, and the card plate is arranged on a side of the door panel close to the pressure plate.

[0009] Preferably, a plurality of slide grooves are provided on the door panel, wherein the slide grooves are provided on both sides of the connecting hole II, and the connecting rod is slidably connected and provided in the slide grooves.

[0010] Preferably, a support groove is further provided on one side of the door panel, and the clamping plate can extend into the support groove.

[0011] Preferably, a plurality of protrusions are arranged around the sealing gasket, and a connecting groove III is arranged inside the protrusion, and the connecting groove III is aligned with the connecting groove I and the connecting groove II respectively, and a supporting hole is also arranged on the protrusion, and the connecting rod is arranged through the supporting hole, and the protrusion is connected in the supporting groove.

[0012] Preferably, a rotating assembly is provided between the atmospheric pressure tank and the manhole door, the rotating assembly comprises a support seat and a support plate, the support seat is fixedly connected to the atmospheric pressure tank, the support plate is fixedly connected to the door panel, the support plate extends into the support seat, and a rotating shaft is provided between the support plate and the support seat.

[0013] Preferably, a handle is provided on the door panel.

[0014] The utility model has the following advantages and beneficial effects:

[0015] 1. In the utility model, the sealing gasket is made of flexible cloth. When the protrusion extends into the supporting groove and is pressed by the clamping plate, the clamping plate and the protrusion close the supporting groove. When the door panel and the pressure plate are closed, the sealing gasket can still close the opening and the through hole. When the door panel and the pressure plate are opened, the sealing gasket can be hung on the connecting rod, avoiding the workers from performing secondary installation.

[0016] 2. In the utility model, a detachable connection method is adopted inside the door panel to connect the sealing gasket to the door panel. When the sealing gasket needs to be replaced, the locking assembly can be taken out to remove the sealing gasket, which can not only prevent the sealing gasket from falling off, but also facilitate the subsequent removal of the sealing gasket.

[0017] 3. The utility model has a simple structure and is easy to operate, which makes it easy for workers or mechanical equipment to enter the atmospheric pressure tank while meeting the normal sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional connection diagram of a manhole door of a normal pressure tank provided by the utility model;

[0019] Figure 2 A schematic diagram of the structure of an atmospheric pressure tank with a manhole door for an atmospheric pressure tank provided by the utility model;

[0020] Figure 3 A schematic diagram of a pressure plate structure of a manhole door of a normal pressure tank provided by the utility model;

[0021] Figure 4 A schematic diagram of the door plate structure of a manhole door for a normal pressure tank provided by the utility model;

[0022] Figure 5 A schematic diagram of the back structure of a door panel of a manhole door for a normal pressure tank provided by the utility model;

[0023] Figure 6 A schematic diagram of a connecting piece structure of a manhole door of a normal pressure tank provided by the utility model;

[0024] Figure 7 A schematic diagram of the locking assembly structure of a manhole door of a normal pressure tank provided by the utility model;

[0025] Figure 8 A schematic diagram of a sealing gasket structure of a manhole door of a normal pressure tank provided by the utility model;

[0026] Fig. 9 A schematic diagram of the connection between a sealing gasket and a locking assembly of a manhole door of a normal pressure tank provided by the utility model;

[0027] Fig.10 A cross-sectional view of a locking screw connection of a manhole door of a normal pressure tank provided by the utility model;

[0028] Icons: 1-normal pressure tank, 101-through port, 2-pressure plate, 21-opening, 22-connecting hole I, 3-door plate, 31-connecting hole II, 32-slide groove, 33-support groove, 4-connecting plate, 41-connecting groove I, 5-clamp plate, 51-connecting rod, 52-connecting groove II, 6-sealing gasket, 61-bump, 62-connecting groove III, 63-support hole, 7-locking screw, 8-support plate, 81-support seat, 82-rotating shaft, 83-handle. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example

[0032] like Figure 1 , 2 , 3, 4, 5, 8, 9, and 10, a manhole door for a normal pressure tank comprises a normal pressure tank 1 and a manhole door arranged on the outer side of the normal pressure tank 1, a through opening 101 is arranged on the normal pressure tank 1, the through opening 101 directly extends into the interior of the normal pressure tank 1, the manhole door comprises a pressure plate 2, a door plate 3, and a sealing gasket 6, the pressure plate 2 is fixedly connected to the normal pressure tank 1, an opening 21 is arranged on the pressure plate 2, the pressure plate 2 is arranged at the position of the through opening 101, and the opening 21 and the through opening 101 are aligned, and the door plate 3 is arranged on the outer side of the normal pressure tank 1 , and is rotatably connected to the atmospheric pressure tank 1, the sealing gasket 6 is detachably arranged between the door panel 3 and the pressure plate 2, a plurality of connecting holes Ⅰ22 are arranged around the pressure plate 2, a plurality of connecting holes Ⅱ31 are arranged on the door panel 3, the connecting holes Ⅰ22 and the connecting holes Ⅱ31 are aligned, a locking screw 7 is arranged between the connecting holes Ⅰ22 and the connecting holes Ⅱ31, the locking screw 7 passes through the door panel 3, the sealing gasket 6 and the pressure plate 2 are connected, a locking assembly is arranged on the door panel 3, and the locking assembly is used to fix the sealing gasket 6 on the inner wall of the door panel 2 close to the side of the pressure plate 2.

[0033] like Figure 1 , 4 As shown in Figures 5, 6, 7, 9 and 10, a plurality of connecting plates 4 are provided on one side of the door panel 3. The connecting plates 4 are provided with connecting grooves Ⅰ41. The connecting plates 4 are arranged at the positions of the connecting holes Ⅱ31, and the connecting grooves Ⅰ41 and the connecting holes Ⅱ31 are aligned. The locking assembly includes a card plate 5 and a connecting rod 51 symmetrically arranged on the same side of the card plate 5. A support groove 33 is also arranged on one side of the door panel 3 (close to the side where the pressure plate 2 is located). The card plate 5 can extend into the support groove 33. A connecting groove II 52 is arranged inside the card plate 5. The card plate 5 is arranged on the side of the door panel 3 close to the pressure plate 2. The card plate 5 and the connecting plate 4 are aligned. A plurality of slide grooves 32 are arranged on the door panel 3. The slide grooves 32 are connected to the support grooves 33. The slide grooves 32 are arranged on both sides of the connecting hole II 31. The slide grooves 32 pass through the door panel 3 and the connecting plate 4, that is, the connecting plate 4 is also provided with slide grooves 32. The connecting rod 51 is slidably connected in the slide groove 32. The connecting groove I 41 and the connecting groove II 52 are respectively threadedly connected to the locking screw 7. When the locking screw 7 passes through the connecting groove I 41 and the connecting groove II 52, the card plate 5 moves toward the direction close to the door panel 3 and gradually extends into the supporting groove 33.

[0034] like Figure 8 , 9 As shown in Figures 10 and 11, a plurality of protrusions 61 are arranged around the sealing gasket 6. The sealing gasket 6 and the protrusions 61 are made of flexible cloth. A connecting groove III 62 is arranged inside the protrusion 61. The connecting groove III 62 is aligned with the connecting groove I 41 and the connecting groove II 52 respectively. A supporting hole 63 is also arranged on the protrusion 61. The connecting rod 51 is arranged through the supporting hole 63. The protrusion 61 is connected to the supporting groove 33. The shape of the protrusion 61 is similar to that of the supporting groove 33. The protrusion 61 is connected between the card plate 5 and the door panel 3. When the door panel 3 and the pressure plate 2 are closed, the sealing gasket 6 can close the opening 21 and the through port 101. The sealing gasket 6 is closed to prevent the internal material from flowing out. At the same time, the protrusion 61 and the card plate 5 are tightly attached to the support groove 33, which does not affect the connection between the door panel 3 and the pressure plate 2, nor does it affect the sealing effect. In the traditional technology, when the door panel 3 is opened, the sealing gasket 6 falls off and needs to be reinstalled. In this design, when the door panel 3 is opened, the sealing gasket 6 is still clamped in the locking assembly, and the mechanical equipment enters the atmospheric pressure tank 1 normally for cleaning. After the cleaning is completed, the door panel 3 and the pressure plate 2 can be directly closed without reinstalling the sealing gasket 6. At the same time, when the sealing gasket 6 is replaced later, it is only necessary to remove the locking assembly from the door panel 3 to remove the sealing gasket 6.

[0035] like Figure 1 , 4 As shown, a rotating assembly is arranged between the atmospheric pressure tank 1 and the manhole door, and the rotating assembly includes a support seat 81 and a support plate 8. The support seat 81 is fixedly connected to the atmospheric pressure tank 1, and the support plate 8 is fixedly connected to the door panel 3. The support plate 8 extends into the support seat 81, and a rotating shaft 82 is arranged between the support plate 8 and the support seat 81 for rotational connection. A handle 83 is arranged on the door panel 3, and the worker can rotate the door panel 3 with the rotating assembly as the center by holding the handle 83.

[0036] like Fig.10 As shown, when the locking screw 7 is used for connection, the locking screw 7 first passes through the connecting groove Ⅰ41 on the connecting plate 4, then passes through the connecting hole Ⅱ31 inside the door panel 3, then passes through the connecting groove Ⅲ62 of the protrusion 61, then passes through the connecting groove Ⅱ52 of the clamping plate 5, and finally connects with the connecting hole Ⅰ22 of the pressure plate 2.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A manhole door for an atmospheric pressure tank, comprising an atmospheric pressure tank and a manhole door arranged outside the atmospheric pressure tank, wherein the atmospheric pressure tank is provided with a through opening, characterized in that: The manhole door includes a pressure plate, a door plate and a sealing gasket. The pressure plate is fixedly connected to the atmospheric pressure tank. An opening is provided on the pressure plate. The pressure plate is arranged at the through-port position, and the opening and the through-port are aligned. The door plate is arranged on the outside of the atmospheric pressure tank and is rotatably connected to the atmospheric pressure tank. The sealing gasket is detachably arranged between the door plate and the pressure plate. A plurality of connecting holes I are arranged around the pressure plate. A plurality of connecting holes II are arranged on the door plate. The connecting holes I and the connecting holes II are aligned. A locking assembly is provided on the door plate. The locking assembly is used to fix the sealing gasket on the inner wall of the door plate close to the side of the pressure plate.

2. The atmospheric pressure tank manhole door according to claim 1, characterized in that: A plurality of connecting plates are arranged on one side of the door panel, and connecting grooves I are arranged on the connecting plates. The connecting plates are arranged at the positions of connecting holes II, and the connecting grooves I and connecting holes II are aligned.

3. The atmospheric pressure tank manhole door according to claim 1, characterized in that: The locking assembly includes a card plate and connecting rods symmetrically arranged on the same side of the card plate. A connecting groove II is arranged inside the card plate. The card plate is arranged on a side of the door panel close to the pressure plate.

4. The atmospheric pressure tank manhole door according to claim 3, characterized in that: The door panel is provided with a plurality of slide grooves, the slide grooves are arranged on both sides of the connecting hole II, and the connecting rod is slidably connected and arranged in the slide grooves.

5. The atmospheric pressure tank manhole door according to claim 3, characterized in that: A support groove is also provided on one side of the door panel, and the clamping plate can extend into the support groove.

6. The atmospheric pressure tank manhole door according to claim 3, characterized in that: A plurality of protrusions are arranged around the sealing gasket, and a connecting groove III is arranged inside the protrusion. The connecting groove III is aligned with the connecting groove I and the connecting groove II respectively, and a supporting hole is also arranged on the protrusion. The connecting rod is arranged through the supporting hole, and the protrusion is connected in the supporting groove.

7. The atmospheric pressure tank manhole door according to claim 1, characterized in that: A rotating assembly is arranged between the atmospheric pressure tank and the manhole door, and the rotating assembly includes a support seat and a support plate. The support seat is fixedly connected to the atmospheric pressure tank, the support plate is fixedly connected to the door plate, the support plate extends into the support seat, and a rotating shaft is arranged between the support plate and the support seat for rotational connection.

8. The atmospheric pressure tank manhole door according to claim 7, characterized in that: A handle is arranged on the door panel.

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