Convenient switch type high-temperature-resistant manhole structure

Abstract

The utility model discloses a convenient switch type high-temperature-resistant manhole structure which is characterized in that a supporting structure comprises a supporting seat arranged on equipment and a supporting cantilever arranged on the supporting seat, and the manhole structure comprises a manhole cover and a connecting flange arranged on the manhole cover and used for being connected with the equipment; the adjusting mechanism comprises a threaded shaft rod, a connecting assembly and a nut, the connecting assembly is arranged on the manhole cover, the lower end of the threaded shaft rod is rotatably arranged on the connecting assembly, the upper end of the threaded shaft rod penetrates through the through hole of the supporting cantilever, the nut is connected to the threaded shaft rod in a threaded mode, and the lower end of the nut abuts against the upper end of the supporting cantilever. Through the combination of the threaded shaft rod, the connecting assembly and the nut, on the premise that the threaded shaft rod can rotate relative to the connecting assembly, the threaded shaft rod can be driven to move up and down through rotation of the nut, and the connecting assembly and the manhole structure can be driven to move up and down; through adjustment of rotation and up-down movement of the manhole structure, butt joint installation with an equipment flange is facilitated, and long-time lifting by an operator is avoided.

Description

Technical Field

[0001] This utility model relates to the field of equipment manhole devices, and in particular to a convenient switchable high-temperature resistant manhole structure. Background Technology

[0002] Incineration is a commonly used and efficient method in the treatment of VOCs (volatile organic compounds), with regenerative thermal ignition (RTI) incinerators and direct-fired incinerators being common treatment equipment. Incineration equipment requires regular inspection and maintenance, therefore, high-temperature resistant manholes are essential. Existing designs for high-temperature resistant manhole covers mainly include: 1. Installing refractory bricks at the manhole opening, requiring each brick to be removed during inspection and maintenance, which is inconvenient; 2. Using high-temperature resistant castable refractory to insulate the manhole cover. While these two existing designs address the issues of high temperature resistance and maintenance, both methods are cumbersome, time-consuming, and labor-intensive.

[0003] Another example is a dust removal equipment manhole door correction structure and manhole door with application number 202121556086.8, which discloses a vertical adjustment structure and an oblique adjustment structure. The oblique adjustment structure adjusts the door cover away from or towards the rotating arm, and the vertical adjustment structure adjusts the door cover up and down to achieve the purpose of aligning the door cover with the door frame. Its structure is relatively complex, and operation requires adjustment of multiple structures. Moreover, the cooperation of the above structures also limits the relative rotation function of the manhole structure (another structure is needed to realize the rotation function). Utility Model Content

[0004] The purpose of this utility model is to provide a convenient switchable high-temperature resistant manhole structure. Through the combination of a threaded shaft, a connecting component, and a nut, the threaded shaft can rotate relative to the connecting component. The rotation of the nut can drive the threaded shaft to move up and down, which in turn drives the connecting component and the manhole structure to move up and down. The adjustment of the rotation and up and down movement of the manhole structure facilitates docking and installation with the equipment flange.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a convenient switchable high-temperature resistant manhole structure, comprising:

[0006] The support structure includes a support base mounted on the equipment and a support cantilever mounted on the support base.

[0007] A manhole structure includes a manhole cover and a connecting flange disposed on the manhole cover for connection with equipment.

[0008] The adjustment mechanism includes a threaded shaft, a connecting assembly, and a nut. The connecting assembly is disposed on the manhole cover. The lower end of the threaded shaft is rotatably disposed on the connecting assembly, and its upper end passes through the through hole of the support cantilever. The nut is screwed onto the threaded shaft, and its lower end abuts against the upper end of the support cantilever.

[0009] As a further optimization, the connecting assembly includes a fixing plate and a bearing. The fixing plate is disposed on the manhole cover and has an inner cavity. The bearing is disposed in the inner cavity, and the lower end of the threaded shaft passes through the fixing plate and extends into the bearing.

[0010] As a further optimization, the fixing plate includes a connecting plate, a pressure plate, and a locking member. The connecting plate is disposed on the manhole cover, and the pressure plate is disposed on the connecting plate through the locking member, with the inner cavity formed between the two.

[0011] As a further optimization, the connecting plate is welded to the manhole cover, or fixed to the manhole cover by a locking member that passes through its body and extends into the manhole cover. Welding is preferred as it provides better connection stability.

[0012] As a further optimization, the connecting plate is provided with a drainage groove that communicates with the inner cavity, which can quickly drain the water accumulated in the inner cavity to avoid corrosion of the bearing.

[0013] As a further optimization, the lower end of the threaded shaft is provided with a limiting base plate, which abuts against the lower end of the bearing.

[0014] As a further optimization, the upper end of the bearing abuts against the top wall of the inner cavity.

[0015] As a further optimization, a slot is provided on the side wall of the threaded shaft above the connecting assembly. A wrench or other tool can be inserted into the slot to apply external force to avoid the problem of the threaded shaft and nut rotating synchronously.

[0016] As a further optimization, a heat insulation layer is provided on the end of the manhole cover near the device.

[0017] As a further optimization, a handle is provided on the end of the manhole cover away from the equipment, making it easier for operators to grip and operate the manhole structure.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By combining a threaded shaft, a connecting assembly, and a nut, the threaded shaft can rotate relative to the connecting assembly. The rotation of the nut can drive the threaded shaft to move up and down, which in turn drives the connecting assembly and the manhole structure to move up and down. The adjustment of the rotation and up and down movement of the manhole structure facilitates docking and installation with the equipment flange.

[0020] 2. In one particular embodiment, the connecting assembly includes a connecting plate, a pressure plate, and a bearing disposed between the two, wherein the bearing facilitates rotation and provides a stable connection. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the present invention.

[0022] Figure 2 This is a structural diagram from another side view of the present invention.

[0023] Figure 3 This is a cross-sectional view showing the connection between the adjustment mechanism, the support structure, and the manhole structure of this utility model.

[0024] Figure 4 This is a cross-sectional view of the other side of the adjustment mechanism of this utility model. Detailed Implementation

[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0026] like Figures 1 to 3 As shown, a convenient switchable high-temperature resistant manhole structure includes a support structure 10, a manhole structure 20, and an adjustment mechanism 30. The support structure 10 includes a support base 11 mounted on the equipment and a support cantilever 12 mounted on the support base 11. The manhole structure 20 includes a manhole cover 21 and a connecting flange 22 mounted on the manhole cover 21 for connection to the equipment. The adjustment mechanism 30 includes a threaded shaft 31, a connecting assembly 32, and a nut 33. The connecting assembly 32 is mounted on the manhole cover 21. The lower end of the threaded shaft 31 is rotatably mounted on the connecting assembly 32, and its upper end passes through the through hole 120 of the support cantilever 12. The nut 33 is screwed onto the threaded shaft 31, and its lower end abuts against the upper end of the support cantilever 12. Therefore, before the connecting flange 22 is connected to the equipment, the manhole structure 20 (manhole cover 21) can be moved up and down by rotating the nut 33 to engage with the threaded shaft 31.

[0027] In this invention, the support base 11 is welded and fixed to the equipment (such as an incinerator). A through hole 120 is provided on the support cantilever 12 located on the support base 11. The position of the through hole 120 determines the position of the threaded shaft 31 installed within it, ensuring that the manhole structure 20 (connecting flange 22) and the equipment flange are vertically aligned. To facilitate precise installation of the manhole structure 20 onto the equipment, i.e., precise alignment of the connecting flange 22 with the equipment flange, the manhole structure 20 can be suspended and vertically adjusted via an adjustment mechanism 30 connected to the support cantilever 12. During this process, the weight of the entire manhole structure 20 can be supported by the support cantilever 12. The manhole structure 20 and the support base 11 are transferred to the equipment, eliminating the need for operators to manually lift the manhole structure 20 to align the connecting flange 22 with the equipment flange. Furthermore, during the alignment process, the manhole structure 20 can rotate relative to the threaded shaft 31, facilitating the alignment of the connecting flange 22 with the equipment flange. When the heights of the connecting flange 22 and the equipment flange do not correspond, the nut 33 can be rotated to engage with the threaded shaft 31, allowing the threaded shaft 31 to move up and down. This, in turn, drives the manhole cover 21 to move up and down, achieving precise alignment between the connecting flange 22 and the equipment flange, thus facilitating the installation of the manhole structure 20.

[0028] This utility model combines a threaded shaft 31, a connecting component 32, and a nut 33. With the threaded shaft 31 rotatable relative to the connecting component 32, the rotation of the nut 33 can drive the threaded shaft 31 to move up and down, which in turn drives the connecting component 32 and the manhole structure 20 to move up and down. Therefore, the rotatability and vertical adjustment of the manhole structure 20 facilitates docking and installation with the equipment flange, avoiding the need for operators to lift the manhole structure 20 for extended periods for convenient installation.

[0029] Preferably, the connecting assembly 32 includes a fixing plate 321 and a bearing 322. The fixing plate 321 is disposed on the manhole cover 21 and has an inner cavity 320. The bearing 322 is disposed in the inner cavity 320. The lower end of the threaded shaft 31 passes through the fixing plate 321, extends into the inner cavity 320, and is connected to the bearing 322. The bearing 322 facilitates the connection with the threaded shaft 31 and allows the fixing plate 321 to rotate relative to the threaded shaft 31 (i.e., the manhole cover 21 can rotate relative to the threaded shaft 31). Furthermore, the inner cavity 320 of the fixing plate 321 can stably install and limit the bearing 322.

[0030] Furthermore, the fixing plate 321 includes a connecting plate 3211, a pressure plate 3212, and a locking member 3213. The connecting plate 3211 is disposed on the manhole cover 21 and is fixedly connected by welding. The pressure plate 3212 is disposed on the connecting plate 3211 by the locking member 3213 (such as a bolt), and an inner cavity 320 is formed between the two. The locking connection between the pressure plate 3212 and the connecting plate 3211 facilitates the formation of the inner cavity 320 between the two and fixes the bearing 322 therein.

[0031] Combination Figure 4 As shown, the connecting plate 3211 is provided with a drainage groove 3210 that communicates with the inner cavity 320. When encountering rainy environments, rainwater may enter the inner cavity 320 along the gap between the threaded shaft 31 and the pressure plate 3212. The presence of rainwater will accelerate the corrosion of the bearing 322, increase the rotational friction, or cause it to be damaged. After designing the drainage groove 3210, rainwater can flow out along the wall of the manhole cover 21 along the drainage groove 3210 under its own gravity, which can greatly reduce the problem of water accumulation and corrosion.

[0032] Furthermore, the lower end of the threaded shaft 31 is provided with a limiting base plate 311, which abuts against the lower end of the bearing 322. The upper end of the bearing 322 abuts against the top wall of the inner cavity 320. Preferably, there is a gap between the lower end of the bearing and the bottom wall of the inner cavity 320, which can ensure the stability of the position of the bearing 322 and the stability of the positions of the threaded shaft 31 and the bearing 322.

[0033] In addition, a slot 310 is provided on the side wall of the threaded shaft 31 above the connecting assembly 32 (pressure plate 3212). When the nut 33 is rotated, a wrench can be used to lock it in the slot 310, thereby solving the problem that the threaded shaft 31 and the nut 33 rotate synchronously on the connecting assembly 32 (bearing 322) and the height of the threaded shaft 31 and the manhole structure 20 cannot be adjusted.

[0034] For example Figure 2 As shown, a heat insulation layer 211 is provided on the manhole cover 21 near the equipment. The heat insulation layer 211 can be made of different materials depending on the temperature inside the equipment and the corrosiveness of the gas medium. For example, if the gas is not corrosive, a ceramic fiber module with good temperature resistance and light weight can be used. If the gas is corrosive, a fiber module or castable material with a high alumina content can be used. It should be noted that using different materials for the heat insulation layer 211 may cause changes in the weight of the manhole structure 20, and the amount of sinking of the supporting cantilever 12 will also be different. In this case, simply rotate the nut 33 to move the threaded shaft 31, as well as the connecting assembly 32 and the manhole cover 21 up and down to realign with the equipment flange.

[0035] For example Figure 1As shown, a handle 212 is provided on the end of the manhole cover 21 away from the equipment. The handle 212 is designed to facilitate the operator to hold and open / close the manhole.

[0036] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A convenient, switchable, high-temperature resistant manhole structure, characterized in that, include: The support structure includes a support base mounted on the equipment and a support cantilever mounted on the support base. A manhole structure includes a manhole cover and a connecting flange disposed on the manhole cover for connection with equipment. The adjustment mechanism includes a threaded shaft, a connecting assembly, and a nut. The connecting assembly is disposed on the manhole cover. The lower end of the threaded shaft is rotatably disposed on the connecting assembly, and its upper end passes through the through hole of the support cantilever. The nut is screwed onto the threaded shaft, and its lower end abuts against the upper end of the support cantilever.

2. The convenient switchable high-temperature resistant manhole structure according to claim 1, characterized in that, The connecting assembly includes a fixing plate and a bearing. The fixing plate is disposed on the manhole cover and has an inner cavity. The bearing is disposed in the inner cavity. The lower end of the threaded shaft passes through the fixing plate and extends into the bearing.

3. The convenient switchable high-temperature resistant manhole structure according to claim 2, characterized in that, The fixing plate includes a connecting plate, a pressure plate, and a locking member. The connecting plate is disposed on the manhole cover, and the pressure plate is disposed on the connecting plate through the locking member, with the inner cavity formed between the two.

4. The convenient switchable high-temperature resistant manhole structure according to claim 3, characterized in that, The connecting plate is welded to the manhole cover or fixed to the manhole cover by a locking member that passes through its body and extends into the manhole cover.

5. The convenient switchable high-temperature resistant manhole structure according to claim 3 or 4, characterized in that, The connecting plate is provided with a drainage groove that communicates with the inner cavity.

6. The convenient switchable high-temperature resistant manhole structure according to claim 2, characterized in that, The lower end of the threaded shaft is provided with a limiting base plate, which abuts against the lower end of the bearing.

7. The convenient switchable high-temperature resistant manhole structure according to claim 2 or 6, characterized in that, The upper end of the bearing abuts against the top wall of the inner cavity.

8. The convenient switchable high-temperature resistant manhole structure according to claim 1, characterized in that, The threaded shaft has a slot on its side wall above the connecting assembly.

9. The convenient switchable high-temperature resistant manhole structure according to claim 1, characterized in that, The manhole cover has a heat insulation layer at the end closest to the equipment.

10. The convenient switchable high-temperature resistant manhole structure according to claim 1, characterized in that, The manhole cover has a handle at the end furthest from the equipment.

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