Automatic door for shallow silo top inlet

Abstract

The utility model belongs to shallow round bin accessory facility technical field discloses a shallow round bin bin top manhole automatic door, installs on the manhole platform of shallow round bin bin top, including bottom frame, hinge, upper frame, window opening drive unit and thermal -insulated composite board, bottom frame and upper frame are the square frame of supporting, bottom frame horizontal installation on the top mouth of manhole platform, hinge sets up on the one end outside wall of bottom frame and upper frame, electric window opening drive unit is installed between bottom frame and upper frame and can drive upper frame along the hinge's hinge axle outward and upward overturn, thermal -insulated composite board is closed and is installed in the inside of upper frame. The utility model shallow round bin bin top manhole automatic door adopts the window opener to carry out electric opening and closes the manhole door, and saves the physical strength of operating personnel.

Description

Technical Field

[0001] This utility model relates to the technical field of shallow circular silo auxiliary facilities, and in particular to an automatic entrance door for the top of a shallow circular silo. Background Technology

[0002] my country's grain storage silos mainly include shallow round silos, vertical silos, and tall flat silos, all of which are large-scale grain storage types, containing a large quantity of grain in thick layers. Among them, shallow round silos are constructed with reinforced concrete, and their roofs are designed with entrances, through which workers typically enter the silo for sampling operations.

[0003] Currently, the manhole covers on shallow circular silos are often opened manually. These covers are typically no less than 0.5 square meters in size and require consideration of insulation and sealing, making them quite heavy and laborious to open and close manually. For example, invention patent CN116517364A (a grain silo manhole system) and utility model patent CN219584976U (a grain silo roof grain inspection structure) both require workers to manually open or close the manhole covers. Workers also need to climb vertical ladders to the platform to sample and inspect the grain, performing physically demanding tasks. Repeatedly moving the covers wastes manpower and creates an additional workload.

[0004] Therefore, it is necessary to develop an automatic entrance door for shallow circular warehouses to address the aforementioned shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide an automatic entrance door for a shallow circular warehouse, which uses a window opener to electrically open and close the manhole door, saving the physical labor of the workers.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model relates to an automatic entrance door for a shallow circular silo, installed on a manhole platform on the top of the silo. It includes a base frame, a hinge, an upper frame, a window opening drive unit, and an insulation composite panel. The base frame and upper frame are matching square frames. The base frame is horizontally installed on the top opening of the manhole platform. The hinge is located on the outer wall of one end of the base frame and the upper frame. The electrically operated window opening drive unit is installed between the base frame and the upper frame and can drive the upper frame to rotate outward and upward along the hinge axis. The insulation composite panel is enclosed and installed inside the upper frame.

[0007] Furthermore, both the bottom frame and the top frame are made of thermally broken aluminum frames.

[0008] The applicant's innovation in transforming the cover door into an aluminum alloy door and window design is groundbreaking in the field, making full use of the thermal insulation measures in existing door and window technologies.

[0009] Furthermore, the bottom frame is provided with nested outer and inner sealing rings on its top surface, and the upper frame is provided with a matching sealing receiving groove at the outer sealing ring, and the inner ring platform of the upper frame is pressed against the inner sealing ring.

[0010] Furthermore, the outer sealing ring and the inner sealing ring are arranged with their heights offset.

[0011] In other words, the outer and inner sealing rings are positioned at different heights. This staggered joint method reduces gas flow compared to a straight joint, thereby reducing the risk of leakage.

[0012] Furthermore, there are two sets of window opening drive units, located on the inner walls of the opposite long side walls of the bottom frame. Specifically, the window opening drive unit adopts a curved chain type automatic window opener. The main body of the window opener is installed on the inner wall of the long side wall of the bottom frame through an L-shaped bracket, and the working end of the chain of the window opener is installed on the inner wall of the upper frame through a top block.

[0013] Furthermore, the thermal insulation composite panel includes an outer skin panel, an insulation layer, and an inner skin panel stacked together from the outside to the inside. Both the outer skin panel and the inner skin panel are made of stainless steel. The outer edges of the outer skin panel and the inner skin panel are installed to the protrusions on the inner sidewall of the upper frame by screws.

[0014] Furthermore, it also includes tensioning components, a plurality of which are evenly arranged on the large surface of the outer skin plate for tensioning the inner skin plate.

[0015] Furthermore, the tensioning assembly includes a pair of screws and a fixing nut, the fixing nut being directly welded to the top surface of the inner skin plate, and the screws being threaded into the fixing nut after passing through a hole in the outer skin plate; the screws are made of plastic.

[0016] Furthermore, the insulation layer is specifically made by laying and filling with insulation rock wool board or by filling with perlite insulation particles.

[0017] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This practical shallow circular silo top entrance automatic door, by adding an electrically driven window opening drive unit between the bottom frame and the upper frame, can automatically open and close the cover door composed of the upper frame and the thermal insulation composite panel, eliminating the need for manual operation by the workers and saving their physical strength.

[0018] Furthermore, by using a thermally broken aluminum frame for the bottom and upper frames, heat transfer along the aluminum alloy frame is reduced. Combined with the insulation composite panel, this prevents the transfer of cold air from the shallow circular chamber to the outside. The addition of two staggered sealing rings (outer and inner) achieves better sealing and reduces nitrogen leakage within the chamber. Symmetrically positioned window openers on both sides drive the upper frame, ensuring smooth opening and closing with stable and reliable performance. The addition of stainless steel thin plates on both the inner and outer sides of the insulation layer provides protection and moisture resistance, reducing the risk of damage or loss of insulation effectiveness due to moisture. Multiple tensioning components evenly distributed on the outer skin plate tighten the inner skin plate, preventing deformation and damage caused by moisture expansion of the insulation layer. Plastic screws reduce thermal bridging between the outer and inner skin plates, improving insulation performance. Tightly laid rock wool boards achieve excellent thermal insulation. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the main view of the automatic entrance door for the shallow circular warehouse of this utility model; Figure 2 This is a schematic diagram of the main sectional view of the automatic entrance door for the shallow circular warehouse of this utility model; Figure 3 for Figure 2 A magnified schematic diagram of a portion of the central I section; Figure 4 This is a front sectional view of the automatic entrance door of the shallow circular silo in the open state.

[0021] Explanation of reference numerals in the attached drawings: 1. Base frame; 101. Outer sealing ring; 102. Inner sealing ring; 2. Hinge; 3. Upper frame; 301. Sealing receiving groove; 4. Window opener; 401. Chain; 402. Top block; 5. Thermal insulation composite board; 501. Outer skin panel; 502. Inner skin panel; 503. Screw; 504. Fixing nut; 505. Thermal insulation layer; 6. Manhole platform; 7. Ladder. Detailed Implementation

[0022] The core of this utility model is to provide an automatic entrance door for a shallow circular silo, which uses a window opener to electrically open and close the manhole door, saving the physical strength of the workers.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Refer to the attached diagram. Figure 1 This is a schematic diagram of the main view of the automatic entrance door for the shallow circular warehouse of this utility model; Figure 2 This is a schematic diagram of the main view and cross-section of the automatic entrance door for the shallow circular warehouse of this utility model; Figure 3 for Figure 2 A magnified schematic diagram of a portion of the central I section; Figure 4 This is a front sectional view of the automatic entrance door of the shallow circular silo in the open state.

[0026] In one specific implementation, such as Figures 1-4 As shown, the automatic entrance door for the shallow circular silo of this invention is installed on the manhole platform 6 on the top of the shallow circular silo. The manhole platform 6 is generally a square concrete cylinder platform, and a ladder 7 leading to the inner cavity of the shallow circular silo is installed inside the manhole platform 6. The automatic entrance door for the shallow circular silo of this invention includes a bottom frame 1, hinges 2, an upper frame 3, a window opening drive unit, and an insulation composite panel 5. The bottom frame 1 and the upper frame 3 are matching square frames. The bottom frame 1 is horizontally installed on the top opening of the manhole platform 6 by anchor bolts. The hinges 2 are located on the outer side wall of one end of the bottom frame 1 and the upper frame 3, generally on the short side wall, and there are two hinges 2, with the hinge shafts coaxially arranged. The electrically operated window opening drive unit is installed between the bottom frame 1 and the upper frame 3 and can drive the upper frame 3 to rotate outward and upward along the hinge shaft of the hinge 2. The insulation composite panel 5 is enclosed and installed inside the upper frame 3.

[0027] By installing an electrically driven window opening drive unit between the bottom frame 1 and the upper frame 3, the cover door composed of the upper frame 3 and the thermal insulation composite panel 5 can be opened and closed automatically, eliminating the need for manual operation and saving workers' physical strength.

[0028] Specifically, such as Figures 2-4As shown, both the bottom frame 1 and the upper frame 3 are made of aluminum alloy with thermal break, which has good thermal insulation performance.

[0029] Specifically, such as Figures 2-4 As shown, the bottom frame 1 has a nested outer sealing ring 101 and an inner sealing ring 102 on its top surface, using a weather-resistant sealing rubber strip. The upper frame 3 has a matching sealing receiving groove 301 at the outer sealing ring 101, and the inner ring platform of the upper frame 3 is pressed against the inner sealing ring 102.

[0030] Specifically, such as Figures 2-4 As shown, the outer sealing ring 101 and the inner sealing ring 102 are arranged with their heights offset.

[0031] By using a thermally broken aluminum frame to make the bottom frame 1 and the upper frame 3, the heat transfer along the aluminum alloy frame is reduced. With the addition of the thermal insulation composite plate 5, the cold air inside the shallow circular compartment is prevented from being transferred outward. By adding two staggered sealing rings, the outer sealing ring 101 and the inner sealing ring 102, a better sealing effect can be achieved, reducing nitrogen leakage inside the cavity.

[0032] In one specific embodiment of this utility model, such as Figure 2 and Figure 4 As shown, there are two sets of window opening drive units, which are located on the inner walls of the opposite long side walls of the bottom frame 1, and the two sets of window opening drive units are symmetrically arranged.

[0033] Specifically, such as Figure 2 and Figure 4 As shown, the window opening drive unit specifically adopts a curved chain type automatic window opener 4. The main body of the window opener 4 is installed on the inner wall of the long side wall of the bottom frame 1 through an L-shaped bracket, and the working end of the chain 401 of the window opener is installed on the inner side wall of the upper frame 3 through a top block 402.

[0034] It should be noted that the window opener 4 is a purchased part and falls within the scope of existing technology. Its internal structure and working principle will not be described in detail here.

[0035] After the applicant improved the existing manhole cover on the top of the shallow circular silo, tests showed that the electric tilting cover door had a response time of no more than 30 seconds and operated smoothly. There was no jamming or abnormal noise during the tilting opening and closing process, and after 1000 consecutive cycles, the key components showed no damage, demonstrating stable and reliable performance.

[0036] The upper frame 3 is driven by the symmetrically arranged window openers 4 on both sides, and the flipping opening and closing action is smooth and the performance is stable and reliable.

[0037] Obviously, the window opening drive unit can also be driven by an electric push rod. The electric push rod is installed on the inner wall of the long side wall of the bottom frame 1 via a pin at its front end, and the push rod end of the electric push rod is hinged to the inner wall of the upper frame 3 via a pin. The opening and closing of the cover door is achieved by pushing and pulling the electric push rod. Similar simple variations all fall within the protection scope of this utility model.

[0038] In one specific embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the thermal insulation composite panel 5 includes an outer skin panel 501, an insulation layer 505, and an inner skin panel 502 stacked together from the outside to the inside. Both the outer skin panel 501 and the inner skin panel 502 are thin stainless steel sheets. The outer edges of the outer skin panel 501 and the inner skin panel 502 are installed on the protrusions on the inner side wall of the upper frame 3 by screws.

[0039] By adding stainless steel sheets to both the inner and outer sides of the insulation layer 505, it can play a protective and moisture-proof role, reducing the loss of insulation effect of the insulation layer 505 after damage or moisture.

[0040] Specifically, such as Figures 1-4 As shown, the thermal insulation composite board 5 also includes a tensioning assembly, and multiple tensioning assemblies are evenly arranged on the large surface of the outer skin board 501 to tension the inner skin board 502.

[0041] Specifically, such as Figures 1-4 As shown, the tensioning assembly includes a pair of screws 503 and fixing nuts 504. The fixing nuts 504 are directly welded to the top surface of the inner skin plate 502, and the screws 503 pass through the through holes in the outer skin plate 501 and are threaded into the fixing nuts 504. The screws 503 are made of plastic.

[0042] Obviously, the tensioning assembly can also be tightened by directly using long bolts that penetrate the outer skin plate 501 and the inner skin plate 502. However, the long bolts form a thermal bridge, reducing the insulation effect. Similar simple replacement methods all fall within the protection scope of this utility model.

[0043] Specifically, such as Figure 2 and Figure 3 As shown, the insulation layer 505 is specifically made by laying and filling with insulation rock wool board or filling with perlite insulation granules.

[0044] By adding multiple tensioning components evenly arranged on the large surface of the outer skin plate 501, the inner skin plate 502 can be tightened to prevent deformation and damage caused by moisture expansion of the insulation layer 505; the screws 503 made of plastic material reduce the thermal bridge connection between the outer skin plate 501 and the inner skin plate 502, and improve the insulation effect; by tightly laying rock wool board, a better thermal insulation effect can be achieved.

[0045] The operation of this utility model's automatic entrance door for a shallow circular silo is as follows: By operating the open button on the control panel, both window openers 4 are energized and begin working synchronously, pushing the chain 401 outwards. The chain 401 pushes the top block 402 outwards and upwards. The top block 402 drives the upper frame 3 to rotate outwards and upwards along the hinge axis of the hinge 2, opening the cover door. Once the door rotates to the limit switch, the window openers 4 stop operating, and the cover door remains open. Workers can then enter the shallow circular silo through the open doorway via the ladder 7 to perform their work. After completing their work, the workers climb out of the open doorway. Operating the close button on the control panel again energizes both window openers 4, causing them to retract the chain 401 inwards. The chain 401 pulls the top block 402. The top block 402 drives the upper frame 3 to rotate inwards and downwards along the hinge axis of the hinge 2, closing the cover door.

[0046] In summary, this utility model's automatic entrance door for a shallow circular silo, by adding an electrically driven window opening drive unit between the bottom frame 1 and the upper frame 3, can automatically open and close the cover door composed of the upper frame 3 and the insulation composite panel 5, eliminating the need for manual operation and saving labor. Furthermore, by using a thermally broken aluminum frame for the bottom frame 1 and the upper frame 3, heat transfer along the aluminum alloy frame is reduced. Combined with the insulation composite panel 5, this prevents the transfer of cold air from the shallow circular silo cavity to the outside. The addition of two staggered sealing rings, an outer sealing ring 101 and an inner sealing ring 102, achieves a better sealing effect and reduces nitrogen leakage within the cavity. The symmetrically arranged window openers 4 on both sides drive the upper frame 3, ensuring smooth opening and closing with stable and reliable performance. The addition of stainless steel thin plates on both the inner and outer sides of the insulation layer 505 provides protection and moisture protection, reducing the risk of damage or moisture absorption that could lead to loss of insulation effectiveness. By adding multiple tensioning components evenly arranged on the large surface of the outer skin plate 501, the inner skin plate 502 can be tightened to prevent deformation and damage caused by moisture expansion of the insulation layer 505; the screws 503 made of plastic material reduce the thermal bridge connection between the outer skin plate 501 and the inner skin plate 502, and improve the insulation effect; by tightly laying rock wool board, a better thermal insulation effect can be achieved.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0048] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An automatic entrance door for a shallow circular silo, installed on a manhole platform (6) on the top of the shallow circular silo, characterized in that, The device includes a bottom frame (1), a hinge (2), an upper frame (3), a window opening drive unit, and an insulation composite panel (5). The bottom frame (1) and the upper frame (3) are matching square frames. The bottom frame (1) is horizontally installed on the top opening of the manhole platform (6). The hinge (2) is set on the outer side wall of one end of the bottom frame (1) and the upper frame (3). The electric window opening drive unit is installed between the bottom frame (1) and the upper frame (3) and can drive the upper frame (3) to rotate outward and upward along the hinge axis of the hinge (2). The insulation composite panel (5) is enclosed and installed inside the upper frame (3).

2. The silo top-hatch access port automatic door according to claim 1, wherein, Both the bottom frame (1) and the upper frame (3) are made of thermally broken aluminum frames.

3. The automatic entrance door for the shallow circular warehouse top as described in claim 2, characterized in that, The bottom frame (1) is provided with a nested outer sealing ring (101) and an inner sealing ring (102) on its top surface. The upper frame (3) is provided with a matching sealing receiving groove (301) at the outer sealing ring (101). The inner ring platform of the upper frame (3) is pressed against the inner sealing ring (102).

4. The automatic entrance door for the shallow circular warehouse top as described in claim 3, characterized in that, The outer sealing ring (101) and the inner sealing ring (102) are arranged with their heights offset.

5. The automatic entrance door for the shallow circular warehouse top according to claim 1, characterized in that, The number of the window opening drive units is two sets, which are located on the inner walls of the opposite long side walls of the bottom frame (1). The window opening drive unit specifically adopts a curved chain type automatic window opener (4). The main body of the window opener (4) is installed on the inner wall of the long side wall of the bottom frame (1) through an L-shaped bracket, and the working end of the chain (401) of the window opener is installed on the inner wall of the upper frame (3) through a top block (402).

6. The automatic entrance door for the shallow circular warehouse top according to claim 1, characterized in that, The thermal insulation composite panel (5) includes an outer skin panel (501), an insulation layer (505), and an inner skin panel (502) stacked together from the outside to the inside. The outer skin panel (501) and the inner skin panel (502) are both stainless steel plates. The outer edges of the outer skin panel (501) and the inner skin panel (502) are installed on the protrusions on the inner side wall of the upper frame (3) by screws.

7. A silo top fill port automatic door according to claim 6, wherein It also includes tensioning components, a plurality of which are evenly arranged on the large surface of the outer skin plate (501) for tensioning the inner skin plate (502).

8. A silo unloader portal door according to claim 7, characterised in that, The tensioning assembly includes a pair of screws (503) and a fixing nut (504). The fixing nut (504) is directly welded to the top surface of the inner skin plate (502). The screw (503) passes through the through hole of the outer skin plate (501) and is threaded into the fixing nut (504). The screw (503) is made of plastic.

9. The automatic entrance door for the shallow circular warehouse top according to claim 8, characterized in that, The insulation layer (505) is specifically made by laying and filling with insulation rock wool board or by filling with perlite insulation particles.

Images