Inward-opening access door of storage tank

Abstract

The utility model discloses a storage tank inward-opening access door which is installed in an access opening formed in the side wall of a storage tank body and comprises a door frame and a door plate, the two ends of the door plate are separately connected with the door frame at the corresponding end through fastening connecting assemblies, and a rotating connecting assembly is connected between the door frame at one end and the door plate. The rotary connecting assembly comprises a door spindle A, a door spindle B, a door spindle C, a door spindle connecting piece A and a door spindle connecting piece B. One end of the door spindle connecting piece A is rotationally connected with the door frame through the door spindle A, the other end of the door spindle connecting piece A is rotationally connected with the door spindle connecting piece B through the door spindle B, and the door spindle connecting piece B is rotationally connected with the door plate through the door spindle C. The internally-opened access door of the storage tank is convenient for maintainers to maintain, when the storage tank is full of materials, the larger the pressure is, the better the sealing effect between the door and the door frame is due to the pressure borne by the access door, the whole door frame is stressed, potential safety hazards can be reduced, and the sealing effect can be enhanced.

Description

Technical Field

[0001] The utility model relates to an inwardly opened inspection door for a storage tank, belonging to the technical field of storage tank inspection. Background Art

[0002] At present, there are mainly two maintenance methods for storage tanks: one is to set an inspection port on the top of the tank and an inspection ladder inside the tank. During maintenance, maintenance personnel enter the tank through the inspection port and perform maintenance inside the tank through the inspection ladder. This maintenance method is not only very inconvenient, but also has great safety hazards when personnel perform maintenance if sewage or other substances that are prone to produce harmful gases are stored in the tank; the other is to set an inspection door on the side wall of the tank. During maintenance, maintenance personnel open the inspection door to inspect the tank. However, the current inspection door usually opens outwards. When the tank is full of materials, the closing device of the outward-opening inspection door is under great pressure, which is unsafe and very easy to leak. Utility Model Content

[0003] In view of the above problems existing in the prior art, the purpose of the utility model is to provide an inward opening inspection door for a storage tank.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A storage tank inward inspection door is installed in an inspection port opened on the side wall of the storage tank body, comprising a door frame and a door panel, both ends of the door panel are detachably connected to the door frame at the corresponding end through a fastening connection assembly, wherein a rotating connection assembly is connected between the door frame at one end and the door panel, the rotating connection assembly comprises a door axis A, a door axis B, a door axis C, a door axis connector A and a door axis connector B, the door axis A and the door axis C are respectively installed on the door frame and the door panel, the door axis B is connected between the door axis connector A and the door axis connector B, one end of the door axis connector A is rotatably connected to the door frame through the door axis A, the other end of the door axis connector A is rotatably connected to the door axis connector B through the door axis B, and the door axis connector B is rotatably connected to the door panel through the door axis C.

[0006] In one embodiment, the outer sides of both ends of the door panel are detachably connected to the inner sides of the door frames at the corresponding ends.

[0007] In one embodiment, a door control connector is provided on the door frame, and both ends of the door panel are detachably connected to the door control connectors at the corresponding ends through a fastening connection assembly.

[0008] In a preferred embodiment, the fastening connection assembly includes a threaded screw and a handwheel, one end of the threaded screw is rotatably arranged on the door panel, and the other end of the threaded screw is movable through the door control connecting piece at the corresponding position and is detachably connected to the handwheel.

[0009] In one embodiment, a sealing gasket is provided at the portion where the door frame and the door panel are connected.

[0010] In one implementation scheme, a plurality of stiffening ribs are provided in the door panel.

[0011] Compared with the prior art, the beneficial technical effects of the utility model are:

[0012] The inward opening inspection door of the storage tank provided by the utility model is arranged on the side wall of the storage tank body, which is not only convenient for maintenance personnel to enter and exit for maintenance, but also has the advantages of convenient maintenance and low maintenance cost, etc. At the same time, because the inspection door opens inward, when the storage tank is full of materials, the greater the pressure, the pressure borne by the inspection door makes the sealing effect between the door and the door frame better, the door frame is stressed as a whole, which can reduce safety hazards and leakage risks, and can significantly increase the sealing effect of the inspection door of the storage tank; therefore, the utility model has extremely strong practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a plan view of an internal inspection door of a storage tank provided by an embodiment of the utility model;

[0014] Figure 2 It is an elevation view of an inwardly opened inspection door of a storage tank provided by an embodiment of the utility model;

[0015] Figure 3 It is a cross-sectional view of the inward opening inspection door of the storage tank provided by the embodiment of the utility model at position AA;

[0016] Figure 4 It is a structural schematic diagram of a storage tank inner opening inspection door provided by an embodiment of the utility model when it is in a closed state;

[0017] Figure 5 It is a structural schematic diagram of a storage tank inner opening inspection door provided by an embodiment of the utility model when it is in an open state;

[0018] The numbers in the figure are as follows: 1. Inward opening inspection door; 11. Door frame; 12. Door panel; 13. Fastening connection assembly; 131. Threaded screw; 132. Handwheel; 14. Rotating connection assembly; 141. Door axis A; 142. Door axis B; 143. Door axis C; 144. Door axis connector A; 145. Door axis connector B; 15. Door control connector; 16. Sealing gasket; 17. Stiffening ribs; 18. Door frame embedded parts; 2. Storage tank body; 21. Inspection port. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. In addition, it should be noted that the terms used in the utility model are only for the purpose of describing specific embodiments, and are not intended to limit the utility model. Unless otherwise defined, the technical terms or scientific terms used in the utility model should be the usual meanings understood by people with general skills in the field. The directions or positional relationships indicated by the terms "inside", "outside", "left", "right", "up", "down", etc. are all based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0020] Example

[0021] Please combine Figures 1 to 5 As shown, the utility model provides a storage tank inward opening inspection door 1, which is installed in the inspection port 21 opened on the side wall of the storage tank body 2, and includes a door frame 11 and a door panel 12. Both ends of the door panel 12 are detachably connected to the door frame 11 at the corresponding end through a fastening connection component 13, wherein a rotating connection component 14 is connected between the door frame 11 at one end and the door panel 12, and the rotating connection component 14 includes a door shaft A 141, a door shaft B 142, a door shaft C 143, a door shaft connecting member A 144 and a door shaft connecting member B 145. The door shaft A 141 and the door shaft C 143 are respectively installed on the door frame 11 and the door panel 12, the door shaft B 142 is connected between the door shaft connecting member A 144 and the door shaft connecting member B 145, one end of the door shaft connecting member A 144 is rotatably connected to the door frame 11 through the door shaft A 141, and the door shaft connecting member A 144 is rotatably connected to the door frame 11 through the door shaft A 141. The other end of 144 is rotatably connected to the door axis connector B 145 via the door axis B 142, and the door axis connector B 145 is rotatably connected to the door panel 12 via the door axis C 143.

[0022] Please see again Figure 4 and Figure 5 As shown, the outer sides of both ends of the door panel 12 are detachably connected to the inner sides of the corresponding door frames 11. The door shaft C 143 is installed at the middle of the outer side of the door panel 12 so that the door shaft connector B 145 can apply force to the door panel 12.

[0023] In addition, a door control connector 15 is provided on the door frame 11 , and both ends of the door panel 12 are detachably connected to the door control connector 15 at the corresponding ends through a fastening connection assembly 13 .

[0024] Specifically, the fastening connection assembly 13 includes a threaded screw 131 and a handwheel 132. One end of the threaded screw 131 is rotatably disposed on the door panel 12, and the other end is movable through the door control connection piece 15 at the corresponding position and is detachably connected to the handwheel 132. Correspondingly, the door control connection piece 15 is provided with a reserved hole adapted to the threaded screw 131 for the threaded screw 131 to pass through. The threaded screw 131 can rotate left and right relative to the door panel 12, and the handwheel 132 is detachably connected to the threaded screw 131 and can rotate relative to the threaded screw 131. The threaded screw 131 can be fastened by tightening the handwheel 132, thereby fastening the connection between the threaded screw 131 and the door control connection piece 15. When using: please refer to Figure 4 As shown, when the inspection door needs to be closed, the door panel 12 can be tightly closed on the door frame 11 by rotating the threaded screw 131 to make it perpendicular to the door panel 12, and then passing it through the door control connector 15 and tightening it through the hand wheel 132; please refer to Figure 5 As shown, when the inspection door needs to be opened, the hand wheel 132 is unscrewed from the threaded screw 131, and the door panel 12 is pushed toward the inner wall of the tank body 2 to separate the door panel 12 from the door frame 11. The threaded screw 131 is rotated to make it parallel to the door panel 12, and then the door panel 12 can be translated inwardly opened by rotating the connecting assembly 14.

[0025] Please see again Figure 3 As shown, a sealing gasket 16 is provided at the portion where the door frame 11 and the door panel 12 are connected, so that the sealing between the door frame 11 and the door panel 12 can be increased. During installation, the sealing gasket 16 is installed on the door frame 11 and arranged along the door frame 11. When the inspection door is closed, the greater the pressure on the door panel 12, the denser the sealing gasket 16 is squeezed, and the better the sealing effect.

[0026] Please see again Figure 2 As shown, the door panel 12 is provided with a plurality of stiffening ribs 17, which can effectively improve the stability and torsion resistance of the door panel 12. In this embodiment, from left to right, three vertical stiffening ribs 17 are provided in the door panel 12, specifically, stiffening ribs 17 are provided at the positions where the threaded screw 131 and the door shaft C 143 are installed in the door panel 12.

[0027] In the present invention, the material of the inner opening inspection door 1 can be stainless steel or other steel or fiberglass, and the material of the tank body 2 can be concrete or stainless steel or other steel or fiberglass. The inner opening inspection door 1 is connected to the tank body 2 through the door frame 11. When the material of the tank body 2 is concrete (i.e., the tank is a concrete tank), please refer to Figure 2 and Figure 3As shown, a door frame embedded part 18 is provided in the side wall of the storage tank body 2, and the door frame 11 is fixedly connected (welded) to the door frame embedded part 18; when the material of the storage tank body 2 is steel (that is, the storage tank is a steel storage tank), the door frame 11 can be directly welded to the side wall of the storage tank body 2; when the material of the storage tank body 2 is fiberglass (that is, the storage tank is a fiberglass storage tank), the storage tank is made into a whole with the door frame 11 during processing, that is, the storage tank body 2 and the door frame 11 are directly integrated.

[0028] The method of using the inner opening inspection door of the storage tank described in the utility model is as follows:

[0029] Under normal conditions, Figure 4 As shown, the inward opening inspection door 1 is in a closed state, and both ends of the door panel 12 are tightly fitted to the door frame 11 through the fastening connection assembly 13 (specifically: the threaded screw 131 on the door panel 12 passes through the door control connection piece 15 on the door frame 11 and is connected to the hand wheel 132, and the hand wheel 132 is tightened to tighten the threaded screw 131, thereby fastening the door panel 12 to the door frame 11);

[0030] When the storage tank needs to be inspected and repaired, the fastening connection assembly 13 is opened to separate the two ends of the door panel 12 from the door frame 11 (specifically: the hand wheel 132 is unscrewed from the threaded screw 131, and the door panel 12 is pushed toward the inner wall of the storage tank body 2, so that the threaded screw 131 is withdrawn from the door control connector 15, thereby separating the two ends of the door panel 12 from the door frame 11. After separation, the threaded screw 131 is rotated to make it parallel to the door panel 12), and then a force is applied to the door panel 12 through the door shaft connector A144 and the door shaft connector B145, so that the door panel 12 is translated to the inner side of one side of the door frame 11, so that the door panel 12 is opened inwardly. At this time, the inward opening inspection door 1 is in Figure 5 The open state shown in the figure, and then the maintenance personnel can enter the storage tank through the maintenance opening 21 on the storage tank body 2 to perform maintenance on the storage tank.

[0031] From the above, it can be seen that the inward opening inspection door 1 provided by the utility model is installed in the inspection port 21 opened on the side wall of the storage tank body 2. After the maintenance personnel open the inward opening inspection door 1, they can enter the storage tank through the inspection port 21 on the storage tank body 2 to carry out maintenance on the storage tank. Compared with the inspection port provided on the top of the storage tank, the maintenance is convenient and the maintenance cost is low. In addition, the inward opening inspection door 1 adopts an inward opening method. Compared with the outward opening inspection door, when the storage tank is full of materials, the greater the pressure, the pressure borne by the inward opening inspection door 1 makes the sealing effect between the door panel 12 and the door frame 11 better, and the door frame 11 is subjected to stress as a whole, which can reduce safety hazards and enhance the sealing effect.

[0032] Finally, it is necessary to point out that the above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be covered within the protection scope of the utility model.

Claims

1. A storage tank inward inspection door, installed in an inspection opening opened on the side wall of the storage tank body, comprising a door frame and a door panel; characterized in that: Both ends of the door panel are detachably connected to the door frame at the corresponding ends through a fastening connection assembly, wherein a rotating connection assembly is connected between the door frame and the door panel at one end, and the rotating connection assembly includes a door axis A, a door axis B, a door axis C, a door axis connector A and a door axis connector B, wherein the door axis A and the door axis C are respectively installed on the door frame and the door panel, and the door axis B is connected between the door axis connector A and the door axis connector B, one end of the door axis connector A is rotatably connected to the door frame through the door axis A, and the other end of the door axis connector A is rotatably connected to the door axis connector B through the door axis B, and the door axis connector B is rotatably connected to the door panel through the door axis C.

2. The inward opening inspection door of the storage tank according to claim 1 is characterized in that: The door frame is provided with a door control connector, and both ends of the door panel are detachably connected to the door control connector at the corresponding end through a fastening connection assembly.

3. The inward opening inspection door of the storage tank according to claim 2 is characterized in that: The fastening connection assembly includes a threaded screw and a handwheel, one end of the threaded screw is rotatably arranged on the door panel, and the other end of the threaded screw is movable through the door control connecting piece at the corresponding position and is detachably connected to the handwheel.

4. The inward opening inspection door for a storage tank according to claim 1 is characterized in that: A sealing gasket is provided at the position where the door frame and the door panel are connected.

5. The inward opening inspection door for a storage tank according to claim 1 is characterized in that: A plurality of stiffening ribs are arranged in the door panel.

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