Heat insulation type boiler door structure

By introducing a vacuum insulation cavity consisting of a cross-shaped insulation panel and a ceramic fiber panel into the boiler door, combined with a rotating locking mechanism and an L-shaped baffle, a multi-layer insulation structure is formed, which solves the problem of inefficient insulation performance of existing boiler doors and achieves a more efficient insulation effect.

CN224261760UActive Publication Date: 2026-05-19XIANGXIANG HONGTANG MASCH MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XIANGXIANG HONGTANG MASCH MFG CO LTD
Filing Date
2025-06-25
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

The insulation performance of existing boiler furnace doors is not efficient enough, and the insulation effect of the honeycomb structure of refractory materials is limited.

Method used

The cast iron furnace door shell is equipped with a cross-shaped heat insulation panel and a ceramic fiber panel. The inner side of the cross-shaped heat insulation panel is equipped with a heat insulation vacuum cavity. Combined with the rotating locking mechanism and L-shaped baffle, a multi-layer heat insulation structure is formed.

Benefits of technology

It significantly improves the thermal insulation performance of boiler doors. The thermal insulation effect is enhanced by multi-layer thermal insulation structure and vacuum thermal insulation cavity, and the honeycomb state of ceramic fiber panel further improves the thermal insulation effect.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224261760U_ABST
    Figure CN224261760U_ABST
Patent Text Reader

Abstract

The utility model discloses a heat insulation type boiler door structure, which relates to the technical field of boiler doors and is technically characterized by comprising a four-hole boiler mounting plate, the boiler door body is mounted on the outer side of the four-hole boiler mounting plate, and has the technical effects that the boiler door body structure is arranged, so that the effects of internal and external heat insulation and vacuum heat insulation are achieved, and the overall heat insulation performance is effectively improved; a cast iron furnace door shell of the boiler door body is movably installed on the rotary opening and closing mechanism through a positioning shaft hole, so that the cast iron furnace door shell is convenient to movably open and close, a cross-shaped heat insulation panel can be separated in the cast iron furnace door shell, a heat insulation vacuum cavity is formed in the inner side of the cross-shaped heat insulation panel, and effective vacuum heat insulation can be achieved through the heat insulation vacuum cavity. The two ends of the cross-shaped heat insulation panel are sleeved with the ceramic fiber panels, and the ceramic fiber panels have a good heat insulation effect and are in a honeycomb state, so that the heat insulation effect is effectively improved.
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Description

Technical Field

[0001] This utility model relates to the field of boiler furnace door technology, specifically to a heat-insulated boiler furnace door structure. Background Technology

[0002] A boiler furnace door is a type of furnace door with an ash trough. It typically includes a circular furnace door seat and a furnace door cover. Boiler furnace doors are usually made of cast iron and filled with refractory material.

[0003] The boiler furnace door is insulated by filling the inside with refractory material. The refractory material has a honeycomb structure, which provides excellent insulation performance. However, relying solely on refractory material for insulation is not very efficient.

[0004] Therefore, we propose a novel insulated boiler door structure to solve the above-mentioned technical problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a heat-insulated boiler furnace door structure, which solves the problem that existing boiler furnace doors are not very efficient in heat insulation.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a heat-insulated boiler furnace door structure, comprising:

[0009] Four-hole boiler mounting plate;

[0010] Boiler door body, which is installed on the outside of a four-hole boiler mounting plate;

[0011] A rotating opening and closing mechanism is fixedly connected to the upper right side of the four-hole boiler mounting plate, and the rotating opening and closing mechanism is movably connected to the boiler door body.

[0012] A rotary locking mechanism is movably installed on the inner left side of the boiler door body;

[0013] The L-shaped baffle is fixed to the upper left side of the four-hole boiler mounting plate and is located on the outside of the rotating locking mechanism.

[0014] Preferably, the boiler door body includes a cast iron door shell. A positioning shaft hole is provided on the inner side of the right end of the cast iron door shell. The cast iron door shell is movably mounted on a rotating opening and closing mechanism through the positioning shaft hole. A rotating storage groove is provided on the inner side of the left end of the cast iron door shell. A rotating locking mechanism is movably mounted on the cast iron door shell through the rotating storage groove. A cross-shaped heat insulation panel is fixedly connected inside the cast iron door shell. A heat insulation vacuum cavity is provided on the inner side of the cross-shaped heat insulation panel. Ceramic fiber panels are sleeved at both ends of the cross-shaped heat insulation panel. The cross-shaped heat insulation panel and the ceramic fiber panel are fixedly connected by positioning pins. A door handle is fixedly connected to the outer wall of the cast iron door shell.

[0015] Preferably, the rotating locking mechanism includes a positioning sleeve, a positioning protrusion ring fixedly connected to the periphery of the positioning sleeve, the positioning sleeve being movably connected to the cast iron furnace door shell through the positioning protrusion ring, an outer protrusion fixedly connected to the middle of the upper end of the positioning sleeve, an operating lever fixedly connected to the outer wall of the outer protrusion, a locking sleeve rod fixedly connected to the outer wall of the positioning protrusion ring, and the locking sleeve rod being sleeved on the inner side of the L-shaped baffle.

[0016] Preferably, the rotating opening and closing mechanism includes a positioning shaft, with anti-disengagement rings fixed to both ends of the positioning shaft, a positioning end block sleeved on the outer end of the positioning shaft, the positioning end block being fixed to the four-hole boiler mounting plate, and the positioning shaft being sleeved on the cast iron furnace door shell.

[0017] Preferably, four ceramic fiber panels are provided, and the ceramic fiber panels are symmetrically installed on the inner sides of both ends of the cross-shaped heat insulation panel.

[0018] Preferably, the ceramic fiber panel is divided into an inner insulation area and an outer insulation area on the cross-shaped heat insulation panel.

[0019] Preferably, the four-hole boiler mounting plate has a boiler slot in the middle of its interior.

[0020] Preferably, the four-hole boiler mounting plate is installed on a designated location on an external boiler using screws.

[0021] (III) Beneficial Effects

[0022] Compared with the prior art, the present invention provides a heat-insulated boiler furnace door structure, which has the following beneficial effects:

[0023] 1. This utility model, by setting the boiler door body structure, has the effects of internal and external heat insulation and vacuum heat insulation, thereby effectively improving the overall heat insulation performance. The cast iron furnace door shell of the boiler door body is movably installed on the rotating opening and closing mechanism through the positioning shaft hole, so that the cast iron furnace door shell is easy to open and close. The cross heat insulation panel can be divided inside the cast iron furnace door shell. A heat insulation vacuum cavity is opened on the inner side of the cross heat insulation panel. The heat insulation vacuum cavity can effectively provide vacuum heat insulation. Ceramic fiber panels are sleeved at both ends of the cross heat insulation panel. The ceramic fiber panels have a good heat insulation effect and are honeycomb in shape, which effectively improves the heat insulation effect.

[0024] 2. This utility model, by setting a rotating locking mechanism, can achieve positioning and rotation locking. The positioning sleeve of the rotating locking mechanism is movably connected to the cast iron furnace door shell through a positioning convex ring. Thus, the positioning sleeve can be stably positioned and rotated on the cast iron furnace door shell through the positioning convex ring. The outer convex post can drive the positioning sleeve post to rotate during rotation. The outer convex post is easy for personnel to hold and rotate through an operating lever. The positioning convex ring can drive the locking sleeve rod to rotate during rotation. The locking sleeve rod can then be rotated and fitted into the L-shaped baffle. Thus, the L-shaped baffle blocks the rotation and prevents the cast iron furnace door shell from opening. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the combined structure of the rotary opening and closing mechanism, the rotary locking mechanism, and the boiler door body of this utility model;

[0027] Figure 3 This is a schematic diagram of the rotating locking mechanism of this utility model;

[0028] Figure 4 This is a schematic diagram of the boiler door body and L-shaped baffle structure of this utility model;

[0029] Figure 5 This is a schematic cross-sectional view of the boiler door body of this utility model;

[0030] Figure 6 This is a schematic diagram of the internal heat insulation mechanism of this utility model.

[0031] In the picture:

[0032] 1. Four-hole boiler mounting plate; 11. Rotating storage slot; 12. Positioning shaft hole; 13. Cross-shaped heat insulation panel; 14. Positioning insert; 15. Heat insulation vacuum chamber; 2. Positioning end block; 21. Positioning shaft; 22. Anti-detachment retaining ring; 3. Cast iron furnace door shell; 4. Furnace door handle; 5. Operating lever; 51. Outer protruding post; 52. Positioning sleeve post; 53. Positioning protruding ring; 6. L-shaped baffle; 61. Locking sleeve rod; 7. Ceramic fiber panel. Detailed Implementation

[0033] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0034] Example 1

[0035] This embodiment provides a technical solution: a heat-insulated boiler furnace door structure, such as... Figures 1-6 As shown, it includes a four-hole boiler mounting plate 1, a boiler furnace door body, a rotating opening and closing mechanism, a rotating locking mechanism, and an L-shaped baffle 6.

[0036] The boiler door body is installed on the outside of the four-hole boiler mounting plate 1. The boiler door body can effectively shield the outside of the four-hole boiler mounting plate 1 for protection. The rotating opening and closing mechanism is fixed to the upper right side of the four-hole boiler mounting plate 1. The rotating opening and closing mechanism can be stably placed on the four-hole boiler mounting plate 1. The rotating opening and closing mechanism is movably connected to the boiler door body. The boiler door body can be stably opened and closed on the four-hole boiler mounting plate 1 through the rotating opening and closing mechanism. The rotating locking mechanism is movably installed on the inner left side of the boiler door body. The boiler door body can be rotated and locked through the rotating locking mechanism, so that the boiler door body can be stably placed and shielded. The L-shaped baffle 6 is fixed to the upper left side of the four-hole boiler mounting plate 1. The L-shaped baffle 6 can be stably placed on the four-hole boiler mounting plate 1 for shielding. The L-shaped baffle 6 is located on the outside of the rotating locking mechanism. The rotating locking mechanism can be rotatably sleeved on the inner side of the L-shaped baffle 6, so that the rotating locking mechanism is blocked by the L-shaped baffle 6, thus preventing the boiler door body from opening and closing arbitrarily.

[0037] The four-hole boiler mounting plate 1 has a boiler slot in the middle of its interior, which facilitates corresponding installation;

[0038] The four-hole boiler mounting plate 1 is installed on the designated position of the external boiler with screws. This screw installation connection makes the four-hole boiler mounting plate 1 easy to install and remove.

[0039] The boiler door body includes a cast iron door shell 3. A positioning shaft hole 12 is provided on the inner right side of the cast iron door shell 3. The cast iron door shell 3 is movably mounted on a rotating opening and closing mechanism through the positioning shaft hole 12, thus facilitating the opening and closing of the cast iron door shell 3. A rotating receiving groove 11 is provided on the inner left side of the cast iron door shell 3. A rotating locking mechanism is movably mounted on the cast iron door shell 3 through the rotating receiving groove 11, allowing the rotating locking mechanism to be positioned and rotated and locked within the rotating receiving groove 11 of the cast iron door shell 3. A cross-shaped heat insulation panel 13 is fixedly connected inside the cast iron door shell 3. 3. The interior of the cast iron furnace door shell 3 can be divided. A heat insulation vacuum chamber 15 is opened on the inner side of the cross heat insulation panel 13. The heat insulation vacuum chamber 15 can effectively provide vacuum heat insulation. Ceramic fiber panels 7 are sleeved on both ends of the cross heat insulation panel 13. The ceramic fiber panels 7 have a good heat insulation effect and are honeycomb in shape, which effectively improves the heat insulation effect. The cross heat insulation panel 13 and the ceramic fiber panels 7 are fixedly connected by positioning pins 14, so that they can be placed stably. A furnace door handle 4 is fixedly connected to the outer wall of the cast iron furnace door shell 3, so that personnel can hold the furnace door handle 4 to drive the cast iron furnace door shell 3 to open and close.

[0040] Four ceramic fiber panels 7 are installed, and the ceramic fiber panels 7 are symmetrically installed on the inner sides of both ends of the cross-shaped heat insulation panel 13, thus achieving a good heat insulation effect.

[0041] The ceramic fiber panel 7 is divided into an inner insulation area and an outer insulation area on the cross-shaped heat insulation panel 13, which facilitates internal and external heat insulation.

[0042] The cross-shaped heat insulation panel 13 is made of diatomaceous earth, which can effectively insulate and separate the heat.

[0043] In use, the boiler door body can be stably opened and closed on the four-hole boiler mounting plate 1 via a rotating opening and closing mechanism. The boiler door body can effectively shield the outside of the four-hole boiler mounting plate 1 for protection. The boiler door body can be rotated and locked by a rotating locking mechanism, so that the boiler door body can be stably placed and shielded. The L-shaped baffle 6 can be stably placed on the four-hole boiler mounting plate 1 for shielding. The rotating locking mechanism can be rotated and sleeved on the inside of the L-shaped baffle 6, so that the L-shaped baffle 6 blocks the rotating locking mechanism, thus preventing the boiler door body from opening and closing arbitrarily.

[0044] Example 2

[0045] This embodiment is a further optimization based on Embodiment 1. The parts that are the same as those described above will not be repeated here. Figures 1-4As shown, to further better realize this utility model, the following configuration is specifically adopted: the rotation locking mechanism includes a positioning sleeve 52, and a positioning protrusion 53 is fixedly connected to the periphery of the positioning sleeve 52. The positioning sleeve 52 can be positioned and rotated through the positioning protrusion 53. The positioning sleeve 52 is movably connected to the cast iron furnace door shell 3 through the positioning protrusion 53, so that the positioning sleeve 52 can be stably positioned and rotated on the cast iron furnace door shell 3 through the positioning protrusion 53. An outer protrusion 51 is fixedly connected to the middle of the upper end of the positioning sleeve 52. During rotation, the positioning sleeve 52 can be rotated. An operating handle 5 is fixed to the outer wall of the outer protrusion 51. The outer protrusion 51 can be easily gripped and rotated by the operator through the operating handle 5. A locking sleeve 61 is fixed to the outer wall of the positioning protrusion 53. During rotation, the positioning protrusion 53 can drive the locking sleeve 61 to rotate. The locking sleeve 61 is sleeved on the inner side of the L-shaped baffle 6. The locking sleeve 61 can be rotated and sleeved in the L-shaped baffle 6, thereby preventing the cast iron furnace door shell 3 from being rotated and opened by the blocking of the L-shaped baffle 6.

[0046] The rotating opening and closing mechanism includes a positioning shaft 21, which is sleeved on the cast iron furnace door shell 3. The cast iron furnace door shell 3 can be positioned and rotated around the positioning shaft 21. Anti-detachment rings 22 are fixedly connected to both ends of the positioning shaft 21. The anti-detachment rings 22 effectively limit the rotation of the cast iron furnace door shell 3. A positioning end block 2 is sleeved on the outer end of the positioning shaft 21. The positioning shaft 21 can be positioned and rotated on the positioning end block 2. The positioning end block 2 is fixedly connected to the four-hole boiler mounting plate 1, and the positioning end block 2 can be stably placed on the four-hole boiler mounting plate 1.

[0047] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A heat-insulated boiler furnace door structure, characterized in that, include: Four-hole boiler mounting plate (1); Boiler door body, the boiler door body is installed on the outside of the four-hole boiler mounting plate (1); Rotary opening and closing mechanism, which is fixed to the upper right side of the four-hole boiler mounting plate (1) and movably connected to the boiler furnace door body; A rotary locking mechanism is movably installed on the inner left side of the boiler door body; L-shaped baffle (6) is fixed to the upper left side of the four-hole boiler mounting plate (1) and is located on the outside of the rotating locking mechanism.

2. The insulated boiler door structure according to claim 1, characterized in that: The boiler door body includes a cast iron door shell (3). A positioning shaft hole (12) is provided on the inner side of the right end of the cast iron door shell (3). The cast iron door shell (3) is movably installed on the rotating opening and closing mechanism through the positioning shaft hole (12). A rotating storage groove (11) is provided on the inner side of the left end of the cast iron door shell (3). A rotating locking mechanism is movably installed on the cast iron door shell (3) through the rotating storage groove (11). A cross-shaped heat insulation panel (13) is fixedly connected inside the cast iron door shell (3). A heat insulation vacuum cavity (15) is provided on the inner side of the cross-shaped heat insulation panel (13). Ceramic fiber panels (7) are sleeved at both ends of the cross-shaped heat insulation panel (13). The cross-shaped heat insulation panel (13) and the ceramic fiber panel (7) are fixedly connected by a positioning pin (14). A door handle (4) is fixedly connected to the outer wall of the cast iron door shell (3).

3. The insulated boiler door structure according to claim 2, characterized in that: The rotating locking mechanism includes a positioning sleeve (52), a positioning protrusion ring (53) is fixedly connected to the periphery of the positioning sleeve (52), the positioning sleeve (52) is movably connected to the cast iron furnace door shell (3) through the positioning protrusion ring (53), an outer protrusion (51) is fixedly connected to the middle of the upper end of the positioning sleeve (52), an operating handle (5) is fixedly connected to the outer wall of the outer protrusion ring (51), a locking sleeve rod (61) is fixedly connected to the outer wall of the positioning protrusion ring (53), and the locking sleeve rod (61) is sleeved on the inner side of the L-shaped baffle (6).

4. The insulated boiler door structure according to claim 1, characterized in that: The rotating opening and closing mechanism includes a positioning shaft (21), with anti-detachment rings (22) fixed to both ends of the positioning shaft (21), and a positioning end block (2) sleeved on the outer end of the positioning shaft (21). The positioning end block (2) is fixed on the four-hole boiler mounting plate (1), and the positioning shaft (21) is sleeved on the cast iron furnace door shell (3).

5. The insulated boiler furnace door structure according to claim 2, characterized in that: There are four ceramic fiber panels (7), and the ceramic fiber panels (7) are symmetrically installed on the inner sides of both ends of the cross-shaped heat insulation panel (13).

6. The insulated boiler door structure according to claim 5, characterized in that: The ceramic fiber panel (7) is divided into an inner insulation area and an outer insulation area on the cross-shaped heat insulation panel (13).

7. The insulated boiler door structure according to claim 1, characterized in that: The four-hole boiler mounting plate (1) has a boiler slot in the middle.

8. The insulated boiler door structure according to claim 7, characterized in that: The four-hole boiler mounting plate (1) is installed on the designated position of the external boiler by screws.