Energy-saving and heat-insulating rotary kiln refractory masonry structure

Abstract

The utility model discloses a kind of energy-saving heat preservation's rotary kiln refractory masonry structure, including kiln body and the heat preservation layer, refractory layer being sequentially arranged in kiln body;Several T-shaped positioning columns are equidistantly distributed on kiln body inner wall;The heat preservation layer is composed of several annular distribution prefabricated insulating brick on kiln body inner wall, and first slot is arranged on prefabricated insulating brick;The refractory layer is composed of several annular distribution prefabricated refractory brick in heat preservation layer inside, and the lower surface of prefabricated refractory brick is provided with the inclined plug of first slot movable insertion, and prefabricated refractory brick, prefabricated insulating brick are all with T-shaped positioning column movable clamping;The utility model structure design is reasonable, by setting heat preservation layer between refractory layer and kiln body, while guaranteeing the overall stability of rotary kiln, can effectively reduce heat loss, it is favorable to improve the heat preservation and energy utilization efficiency of rotary kiln.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, specifically to an energy-saving and heat-insulating refractory masonry structure for rotary kilns. Background Technology

[0002] Rotary kilns are currently the main production equipment in the building materials and chemical industries, and their operating efficiency directly affects production costs and product quality. With the continuous improvement of energy conservation and environmental protection requirements, how to achieve energy-saving and environmentally friendly operation of rotary kilns has become an important issue. At present, various rotary kiln series such as cement rotary kilns, titanium dioxide rotary kilns, rotary kilns for the chemical industry, and lime rotary kilns have only one layer of high-strength, corrosion-resistant refractory bricks as refractory material lining, resulting in large heat dissipation and high heat loss of the cylinder.

[0003] In existing technologies, heat insulation materials are usually coated between the cylinder of the rotary kiln and the refractory brick lining to improve the heat insulation performance of the rotary kiln. However, the heat insulation material coating is relatively thin, with limited heat insulation effect and poor stability. It is prone to cracking and falling off when used at high temperatures. At the same time, the rotation of the rotary kiln will cause displacement between the refractory heat insulation bricks, the heat insulation layer and the inner wall of the rotary kiln, causing the heat insulation layer to crack and fail. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an energy-saving and heat-insulating refractory masonry structure for rotary kilns.

[0005] The technical solution of this utility model is: an energy-saving and heat-insulating rotary kiln refractory masonry structure, including a kiln body and a heat-insulating layer and a refractory layer arranged sequentially on the inner wall of the kiln body; a number of T-shaped positioning columns are evenly distributed on the inner wall of the kiln body. The insulation layer consists of several prefabricated insulation bricks arranged in a ring on the inner wall of the kiln; both ends of the prefabricated insulation bricks are provided with arc-shaped notches that can be movably engaged with T-shaped positioning columns; the upper surface of the prefabricated insulation bricks is provided with two first slots that are inclined inward. The refractory layer is composed of several precast refractory bricks arranged in a ring on the inner side of the insulation layer; the bottom surface of the precast refractory bricks is provided with inclined blocks that are movably inserted into the two first slots respectively; the precast refractory bricks are provided with cavities inside; the bottom surface of the precast refractory bricks and located between two adjacent inclined blocks are provided with T-shaped grooves that communicate with the cavities; the precast refractory bricks are movably engaged with the T-shaped positioning posts through the T-shaped grooves.

[0006] Furthermore, the interior of the kiln body is provided with a first wedge-shaped insert between two adjacent T-shaped positioning columns, and the bottom end of the prefabricated insulation brick is provided with a second slot that can be movably engaged with the first wedge-shaped insert. Explanation: The interlocking action of the first wedge-shaped insert and the second slot can make the prefabricated insulation bricks more tightly connected to the kiln body, preventing the prefabricated insulation bricks from loosening and falling off during the rotation of the kiln body.

[0007] Furthermore, a second wedge-shaped insert is provided on one side of the precast refractory brick, and a third slot is provided on the other side; Note: Two adjacent precast refractory bricks are movably connected by a second wedge-shaped insert and a third slot, which helps to improve the convenience and positioning accuracy of the precast refractory bricks during installation.

[0008] Furthermore, the precast refractory bricks are equipped with heat insulation boards inside; Note: By installing heat insulation boards inside the precast refractory bricks, the heat inside the kiln can be effectively blocked from spreading outward, thus improving the thermal insulation performance of the rotary kiln masonry structure.

[0009] Furthermore, several baffles are evenly distributed along the length of the kiln body, which divide the insulation layer and the refractory layer into several segments of the same length. Explanation: The retaining ring can block the stress caused by the thermal expansion and contraction of precast insulating bricks and precast refractory bricks, thereby improving the connection stability between the insulation layer, refractory layer and kiln body.

[0010] Furthermore, the joints of two adjacent rings of precast insulating bricks inside the kiln are staggered, as are the joints of two adjacent rings of precast refractory bricks. Note: The above settings can prevent the precast insulation bricks and precast refractory bricks from falling off during the rotation of the kiln, thus extending the service life of the rotary kiln.

[0011] The installation method of this utility model is as follows: First, fire mortar is applied to the inner wall of the kiln. Then, the precast insulating bricks are movably engaged with the first wedge-shaped insert through the first slot. The arc-shaped notch of the precast insulating bricks is movably engaged with the T-shaped positioning post. Under the action of the fire mortar, the precast insulating bricks are bonded and fixed to the kiln, thus completing the construction of the insulation layer. Next, fire mortar is applied to the inner wall of the insulation layer. The T-shaped positioning post is inserted into the T-shaped groove of the precast refractory brick. Then, the precast refractory brick is moved so that the T-shaped positioning post moves inside the cavity. Finally, the fire mortar is used to bond and fix each precast refractory brick to the insulation layer, thus completing the construction of the refractory layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are reflected in the following aspects: First, the structure of this utility model is reasonably designed. By setting an insulation layer between the refractory layer and the kiln body, the overall stability of the rotary kiln is ensured while heat loss is effectively reduced, which is conducive to improving the insulation performance and energy utilization efficiency of the rotary kiln. Secondly, the refractory layer and insulation layer of this utility model are both composed of prefabricated components, which improves the installation convenience of the rotary kiln refractory masonry and facilitates later replacement and maintenance; at the same time, it also reduces the operating cost and energy consumption of the rotary kiln. Third, the gaps between the insulation layer and the refractory layer of this utility model are staggered, which reduces the risk of the insulation layer and the refractory layer falling off as a whole due to internal fire in the kiln; at the same time, the kiln body, prefabricated insulation bricks and prefabricated refractory bricks of this utility model are interlocked with each other, which ensures the integrity and firmness of the masonry structure. Attached Figure Description

[0013] Figure 1 This is a longitudinal sectional view of the present invention; Figure 2 This is a utility model Figure 1 A magnified view of a portion of point A in the middle; Figure 3 This is a distribution diagram of the prefabricated insulating bricks inside the kiln body according to this utility model; Figure 4 This is a utility model Figure 3 A magnified view of a portion of point B in the middle; Figure 5 This is a distribution diagram of the inclined insert blocks of this utility model on precast refractory bricks; Figure 6 This is a longitudinal sectional view of the prefabricated refractory brick of this utility model; Among them, 1-kiln body, 2-insulation layer, 20-prefabricated insulation brick, 200-arc notch, 201-first slot, 202-second slot, 3-refractory layer, 30-prefabricated refractory brick, 300-cavity, 301-T-shaped groove, 302-third slot, 31-slanted insert, 32-second wedge-shaped insert, 33-heat insulation board, 4-T-shaped positioning post, 5-first wedge-shaped insert, 6-retaining ring. Detailed Implementation

[0014] Example 1 like Figure 1 , 2 The diagram shows an energy-saving and heat-insulating rotary kiln refractory masonry structure, which includes a kiln body 1 and a heat insulation layer 2 and a refractory layer 3 arranged sequentially on the inner wall of the kiln body 1; a number of T-shaped positioning columns 4 are evenly distributed on the inner wall of the kiln body 1. like Figure 2 , 4 As shown, the insulation layer 2 is composed of several prefabricated insulation bricks 20 (commercially available products) distributed in a ring on the inner wall of the kiln body 1; both ends of the prefabricated insulation bricks 20 are provided with arc-shaped notches 200 that can be movably engaged with the T-shaped positioning post 10; the upper surface of the prefabricated insulation bricks 20 is provided with two first slots 201 inclined inward. like Figure 2 , 5As shown, the refractory layer 3 is composed of several prefabricated refractory bricks 30 (commercially available products) arranged in a ring on the inner side of the insulation layer 2; the bottom surface of the prefabricated refractory bricks 30 is provided with inclined blocks 31 that are movably inserted into the two first slots 201 respectively; the prefabricated refractory bricks 30 are provided with cavities 300 inside; the bottom surface of the prefabricated refractory bricks 30 and located between two adjacent inclined blocks 31 are provided with T-shaped grooves 301 that are connected to the cavity 300; the prefabricated refractory bricks 30 are movably engaged with the T-shaped positioning posts 4 through the T-shaped grooves 301.

[0015] Example 2 The difference between this embodiment and Embodiment 1 is that: like Figure 2 As shown, the interior of the kiln body 1 is provided with a first wedge-shaped insert 5 located between two adjacent T-shaped positioning posts 4, and the bottom end of the prefabricated insulation brick 20 is provided with a second slot 202 that can be movably engaged with the first wedge-shaped insert 5; the engaging action of the first wedge-shaped insert 5 and the second slot 202 can make the prefabricated insulation brick 20 more tightly connected to the kiln body 1, and prevent the prefabricated insulation brick 20 from loosening and falling off during the rotation of the kiln body 1.

[0016] Example 3 The difference between this embodiment and Embodiment 2 is that: like Figure 5 , 6 As shown, a second wedge-shaped insert 32 is provided on one side of the precast refractory brick 30, and a third slot 302 is provided on the other side; a heat insulation plate 33 is provided inside the precast refractory brick 30, which is made of commercially available high heat insulation ceramic fiber material; two adjacent precast refractory bricks 30 are movably connected by the second wedge-shaped insert 32 and the third slot 302, which helps to improve the convenience and positioning accuracy of the precast refractory bricks 30 during installation; and by providing a heat insulation plate 33 inside the precast refractory brick 30, the heat inside the kiln body 1 can be effectively blocked from spreading outward, thereby improving the thermal insulation performance of the rotary kiln masonry structure.

[0017] Example 4 The difference between this embodiment and Embodiment 3 is that: like Figure 3 As shown, several baffle rings 6 are evenly distributed along the length of the kiln body 1. The baffle rings 6 divide the insulation layer 2 and the refractory layer 3 into several segments of the same length. The baffle rings 6 can block the stress generated by the thermal expansion and contraction of the pre-insulated bricks 20 and the pre-refractory bricks 30, thereby improving the connection stability between the insulation layer 2, the refractory layer 3 and the kiln body 1.

[0018] Example 5 The difference between this embodiment and embodiment 4 is that: like Figure 1 , 3As shown, the joints of two adjacent rings of precast insulating bricks 20 inside the kiln body 1 are staggered, and the joints of two adjacent rings of precast refractory bricks 30 are also staggered. This arrangement can prevent the precast insulating bricks 20 and precast refractory bricks 30 from falling off during the rotation of the kiln body 1, thus extending the service life of the rotary kiln.

Claims

1. An energy-saving and heat-insulating refractory masonry structure for a rotary kiln, characterized in that, It includes a kiln body (1) and a heat insulation layer (2) and a refractory layer (3) arranged sequentially on the inner wall of the kiln body (1); a number of T-shaped positioning columns (4) are evenly distributed on the inner wall of the kiln body (1). The insulation layer (2) is composed of several prefabricated insulation bricks (20) arranged in a ring on the inner wall of the kiln body (1); both ends of the prefabricated insulation bricks (20) are provided with arc-shaped notches (200) that can be movably engaged with the T-shaped positioning post (10); the upper surface of the prefabricated insulation bricks (20) is provided with two first slots (201) inclined inward. The refractory layer (3) is composed of several prefabricated refractory bricks (30) arranged in a ring on the inner side of the insulation layer (2); the bottom surface of the prefabricated refractory brick (30) is provided with inclined inserts (31) that are movably inserted into the two first slots (201) respectively; the prefabricated refractory brick (30) is provided with a cavity (300) inside; the bottom surface of the prefabricated refractory brick (30) and located between two adjacent inclined inserts (31) are provided with T-shaped grooves (301) that are connected to the cavity (300); the prefabricated refractory brick (30) is movably engaged with the T-shaped positioning post (4) through the T-shaped grooves (301).

2. The energy-saving and heat-insulating refractory masonry structure for a rotary kiln according to claim 1, characterized in that, The interior of the kiln body (1) is provided with a first wedge-shaped insert (5) located between two adjacent T-shaped positioning columns (4), and the bottom end of the prefabricated insulation brick (20) is provided with a second slot (202) that can be movably engaged with the first wedge-shaped insert (5).

3. The energy-saving and heat-insulating refractory masonry structure for a rotary kiln according to claim 1, characterized in that, The precast refractory brick (30) has a second wedge-shaped insert (32) on one side and a third slot (302) on the other side.

4. The energy-saving and heat-insulating refractory masonry structure for a rotary kiln according to claim 1, characterized in that, The precast refractory brick (30) is provided with a heat insulation board (33) inside.

5. The energy-saving and heat-insulating refractory masonry structure for a rotary kiln according to claim 1, characterized in that, The kiln body (1) has several baffle rings (6) evenly distributed along its length. The baffle rings (6) divide the insulation layer (2) and the refractory layer (3) into several segments of the same length.

6. The energy-saving and heat-insulating refractory masonry structure for a rotary kiln according to claim 1, characterized in that, The joints of two adjacent rings of prefabricated insulating bricks (20) inside the kiln body (1) are staggered, and the joints of two adjacent rings of prefabricated refractory bricks (30) are also staggered.

Images