A roller kiln car for high reliability foam ceramic production

Abstract

The present invention discloses a roller kiln car for producing high-reliability foamed ceramics, comprising a boron plate and a mold frame, wherein the mold frame is set on the top of the boron plate and cooperates with the boron plate to form a receiving cavity for accommodating foamed ceramic powder; the boron plate comprises a plurality of boron plate units, wherein the boron plate units are provided with a body and a staggered connection portion; each of the boron plate units is connected to the staggered connection portion on another boron plate unit through its own staggered connection portion, so that the connection edge of the connected boron plate units is blocked by the staggered connection portion. The present invention has a stable structure, and no gaps will appear in the boron plate during the kiln car's forward movement. The temperature of the boron plate and the receiving cavity is uniform and good, and the foamed ceramics produced have high reliability.

Description

Technical Field

[0001] The invention relates to the technical field of foamed ceramic production equipment, in particular to a roller kiln car used for producing foamed ceramics with high reliability. Background Art

[0002] Roller kiln is mainly used for the production of building materials such as architectural ceramics. It is a continuous firing kiln with rotating rollers as the carrier of the green body. Generally, the ceramic green body is placed on many orderly spaced ceramic rods. A small sprocket is provided at the end of each roller. The small sprocket and roller are driven by the chain to rotate, so as to transfer the ceramic green body on the roller from the kiln head to the kiln tail in sequence, so it is called a roller kiln.

[0003] The molding method of foamed ceramics is different from that of ordinary architectural ceramics. Ordinary architectural ceramics are pressed and formed, and the formed green body is directly placed on rollers and fired in the kiln, while foamed ceramics are directly applied to the kiln car by powder, and the kiln car is placed on rollers and fired in the kiln. In general, the kiln car for firing foamed ceramics is assembled from boron plates made of materials such as cordierite or mullite, which include boron plates and mold frames placed on the surface of the bottom plate. The boron plates include multiple boron plate units spliced ​​longitudinally or transversely. However, during the production process, foamed ceramic products always have some longitudinal or transverse hidden cracks, which cause the product to break when it leaves the kiln or during the later processing process. In particular, there are many cracks perpendicular to the forward direction of the kiln car, which directly reduces the product quality rate and increases the manufacturing cost. The reason was found to be irregular in size, gaps would appear more or less during splicing, and the bottom plate template was easily displaced when transmitted on rollers. When the product was fired, there was a large temperature difference between the seams and the seamless areas, resulting in uneven stress, especially the temperature difference of the gaps that were consistent with the direction of the nozzle (i.e. perpendicular to the direction of the kiln car's advance) was even greater. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a roller kiln car for producing high-reliability foamed ceramics, which has a stable structure, no gaps in the boron plate when the kiln car moves forward, the temperature of the boron plate and the containing cavity is uniform, and the foamed ceramics produced are of high reliability.

[0005] In order to solve the above technical problems, the present invention provides a roller kiln car for high-reliability foamed ceramic production, comprising a boron plate and a mold frame, wherein the mold frame is built on the top of the boron plate and cooperates with the boron plate to form a receiving cavity for accommodating foamed ceramic powder;

[0006] The boron plate comprises a plurality of boron plate units, each of which is provided with a main body and a staggered connection portion;

[0007] Each of the boron plate units is connected to the staggered connection portion on another boron plate unit through its own staggered connection portion, so that the connection edges of the connected boron plate units are blocked by the staggered connection portion.

[0008] As an improvement of the above scheme, the staggered connection parts are formed by connection parts extending staggeredly from the surface, and the longitudinal section of the staggered connection parts is wavy, sawtooth or long strip. The staggered connection parts of adjacent boron plate units are connected by overlapping, embedding or abutting each other.

[0009] As an improvement of the above solution, the staggered connection portion includes a first overlapping portion and / or a second overlapping portion;

[0010] The first overlapping portion extends in the width direction of the main body, and the second overlapping portion extends in the length direction of the main body. The first overlapping portion and the second overlapping portion are both provided with step surfaces. The step surfaces of the first overlapping portions of adjacent boron plate units overlap each other, and the step surfaces of the second overlapping portions of adjacent boron plate units overlap each other.

[0011] As an improvement of the above solution, the back sides of the step surfaces of the first overlapping portion and the second overlapping portion are both flush with the surface of the main body.

[0012] As an improvement of the above solution, the bodies of adjacent boron plate units abut against each other.

[0013] As an improvement of the above solution, the step surface of the first overlapping portion is flush with or tangent to the step surface of the second overlapping portion.

[0014] As an improvement of the above solution, the boron plate unit includes an intermediate boron plate unit, the first overlapping portion and the second overlapping portion of the intermediate boron plate unit are respectively provided in two, and the first overlapping portion and the second overlapping portion of the intermediate boron plate unit are respectively arranged in flip symmetry.

[0015] As an improvement of the above solution, the boron plate unit also includes an edge boron plate unit and a corner boron plate unit. The edge boron plate unit is used to overlap with adjacent middle boron plate units and edge boron plates, and the corner boron plate unit is used to overlap with adjacent edge boron plates.

[0016] As an improvement of the above scheme, the first overlapping portion of the edge boron plate unit is set to one, which overlaps with the first overlapping portion of the middle boron plate unit, and the second overlapping portions of the edge boron plate unit are set to two, which are arranged at both ends of the body of the edge boron plate unit, and the step surfaces of the two second overlapping portions of the edge boron plate unit are tangent; or

[0017] The second overlapping portion of the edge boron plate unit is set to one, which overlaps with the second overlapping portion of the middle boron plate unit. The first overlapping portions of the edge boron plate unit are set to two, which are arranged at both ends of the body of the edge boron plate unit. The step surfaces of the two first overlapping portions of the edge boron plate unit are tangent.

[0018] As an improvement of the above scheme, the first overlapping portion and the second overlapping portion of the corner boron plate unit are each set as one, the first overlapping portion of the corner boron plate unit is used to overlap with the first overlapping portion of the edge boron plate unit, and the second overlapping portion of the corner boron plate unit is used to overlap with the second overlapping portion of the edge boron plate unit.

[0019] The implementation of the present invention has the following beneficial effects:

[0020] The present invention provides a roller kiln car for producing high-reliability foamed ceramics. By arranging staggered connecting parts on the body of a boron plate unit, each of the boron plate units is connected to the staggered connecting parts on another boron plate unit through its own staggered connecting parts, so that the connecting edges of the connected boron plate units are blocked by the staggered connecting parts, thereby avoiding the generation of gaps between the boron plate units when the boron plates are spliced, so that the foamed ceramic powder is heated more evenly in the accommodating cavity, and the stress of the fired foamed ceramic is more uniform during cooling, which can reduce the generation of transverse and longitudinal cracks and improve the quality rate of products. In addition, during the transmission of the kiln car on the roller rod, the staggered connecting parts between the boron plate units are connected by overlapping, embedding or abutting each other, and are not prone to displacement. The structure is more stable, thereby ensuring the reliability of the quality of the foamed ceramics. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of a roller kiln car for producing high-reliability foamed ceramics according to the present invention;

[0022] Figure 2 yes Figure 1 A schematic structural diagram of a first embodiment of a boron plate unit;

[0023] Figure 3 yes Figure 2 Schematic diagram of the structure of the boron plate units connected to each other;

[0024] Figure 4 yes Figure 1 A schematic structural diagram of a second embodiment of a boron plate unit;

[0025] Figure 5 yes Figure 4 Schematic diagram of the structure of the boron plate units connected to each other;

[0026] Figure 6 yes Figure 1 A schematic structural diagram of a third embodiment of a boron plate unit;

[0027] Figure 7 yes Figure 6 Schematic diagram of the structure of the boron plate units connected to each other;

[0028] Figure 8 yes Figure 1A third embodiment of the boron plate unit and a schematic diagram of the structure of the interconnection thereof;

[0029] Fig. 9 yes Figure 1 Schematic diagram of the first explosion structure of the boron plate;

[0030] Fig.10 yes Figure 1 Schematic diagram of the second explosion structure of the boron plate;

[0031] Fig.11 yes Fig.10 A schematic diagram of the structure of the first edge boron plate unit;

[0032] Fig.12 yes Fig.10 A schematic diagram of the structure of the second side boron plate unit;

[0033] Fig.13 yes Fig.10 Schematic diagram of the structure of the third edge boron plate unit;

[0034] Fig.14 yes Fig.10 A schematic diagram of the structure of the fourth side boron plate unit;

[0035] Fig.15 yes Fig.10 A schematic diagram of the structure of the first corner boron plate unit;

[0036] Fig.16 yes Fig.10 A schematic diagram of the structure of the second corner boron plate unit;

[0037] Fig.17 yes Fig.10 Schematic diagram of the structure of the third triangle boron plate unit;

[0038] Fig.18 yes Fig.10 Schematic diagram of the structure of the fourth corner boron plate unit. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] like Figure 1As shown, the present invention provides an embodiment of a roller kiln car for high-reliability foamed ceramic production, including a boron plate 1 and a mold frame 2, wherein the mold frame 2 is erected on the top of the boron plate 1, and cooperates with the boron plate 1 to form a accommodating cavity 3 for accommodating foamed ceramic powder; the boron plate 1 includes a plurality of boron plate units 11, and the boron plate unit 11 is provided with a main body 11' and a staggered connection portion 11a; each boron plate unit 11 is connected to the staggered connection portion 11a on another boron plate unit 11 through its own staggered connection portion 11a, so that the connection edge A of the connected boron plate units 11 is blocked by the staggered connection 11a portion.

[0041] It should be noted that the connection edge A of the connected boron plate units 11 here refers to the edge connected to the surfaces of the two mutually connected boron plate units 11. Since the connection edge A of the connected boron plate units 11 is blocked by the staggered connection 11a, there is no gap between the spliced ​​boron plate units 11, and the fire sprayed from the nozzle cannot jump from the bottom of the boron plate unit 11 to the top of the boron plate 1, and will not directly contact the foamed ceramic powder or ceramic powder. The temperature uniformity of the top of the boron plate 1 is good, the foamed ceramic powder is heated more evenly, and the fired foamed ceramic is not easy to crack.

[0042] Specifically, the staggered connection parts 11a are formed by connection parts staggeredly extending from the surface, and the longitudinal section of the staggered connection parts 11a is wavy, sawtooth or long strip. The staggered connection parts 11a of adjacent boron plate units 11 are connected by overlapping, embedding or abutting each other.

[0043] As a first embodiment of the boron plate unit 11, Figure 2-3 As shown, the longitudinal section of the staggered connection portion 11 a of the boron plate unit 11 is sawtooth-shaped, and the staggered connection portions 11 a of adjacent boron plate units 1 are embedded in each other.

[0044] As a second embodiment of the boron plate unit 11, Figure 4-5 As shown, the longitudinal section of the staggered connection portion 11 a of the boron plate unit 11 is wavy, and the staggered connection portions 11 a of adjacent boron plate units 1 are embedded in each other.

[0045] As a third embodiment of the boron plate unit 11, Figure 6-7 As shown, the longitudinal section of the staggered connection portion 11 a of the boron plate unit 11 is in the shape of a long strip, and the staggered connection portions 11 a of adjacent boron plate units 1 are embedded in each other.

[0046] Figure 8A fourth embodiment of the boron plate unit 11 is given, that is, the longitudinal section of the staggered connection portion 11a of the boron plate unit 11 is in the shape of a long strip, and the staggered connection portions 11a of adjacent boron plate units 1 overlap each other. The staggered connection portion 11a includes a first overlap portion 11b and / or a second overlap portion 11c; the first overlap portion 11b extends in the width direction of the body 11', and the second overlap portion 11c extends in the length direction of the body 11'. The first overlap portion 11b and the second overlap portion 11c are both provided with a step surface B, and the step surfaces B of the first overlap portions 11b of adjacent boron plate units 11 overlap each other, and the step surfaces B of the second overlap portions 11c of adjacent boron plate units 11 overlap each other.

[0047] In this embodiment, a first overlapping portion 11b extending in the width direction of the main body 11' and / or a second overlapping portion 11c extending in the length direction of the main body 11' are provided on the boron plate unit 11, and both the first overlapping portion 11b and the second overlapping portion 11c are provided with a step surface B. By overlapping the step surfaces B of the first overlapping portions 11b of adjacent boron plate units 11 with each other, and overlapping the step surfaces B of the second overlapping portions 11c of adjacent boron plate units 11 with each other, gaps between the boron plate units 11 are avoided when the boron plates 1 are spliced, so that the foamed ceramic powder is heated more evenly in the accommodating cavity 3, and the stress of the fired foamed ceramic is more uniform during cooling, which can reduce the generation of transverse and longitudinal cracks and improve the quality rate of products. In addition, during the transmission of the roller kiln car on the roller rod, the boron plate units 11 overlap with each other, are not easily displaced, and the structure is more stable, thereby ensuring the reliability of the quality of the foamed ceramic.

[0048] In this embodiment, the back sides of the step surfaces B of the first overlapping portion 11b and the second overlapping portion 11c are flush with the surface of the main body 11', and the main bodies 11' of adjacent boron plate units 11 abut against each other, which can make the surface of the spliced ​​boron plate 1 smoother and avoid the foamed ceramic powder from being stuck between the step surface B and the main body 11', which helps to improve the utilization rate of the foamed ceramic powder and makes it easier to demold the foamed ceramic after molding.

[0049] To facilitate the processing and assembly of the step surface B of the boron plate unit 11, the step surface B of the first overlapping portion 11b is flush with or tangent to the step surface B of the second overlapping portion 11c.

[0050] Specifically, in this embodiment, the width ratio of the first overlapping portion 11b to the width of the boron plate unit 11 is (1 / 40 to 1 / 6), and the width ratio of the second overlapping portion 11c to the length of the boron plate unit 11 is (1 / 60 to 1 / 10). Fig. 9The boron plate unit 11 of this embodiment includes an intermediate boron plate unit 111, an edge boron plate unit 112 and a corner boron plate unit 113. The first overlapping portion 11b and the second overlapping portion 11c of the intermediate boron plate unit 111 are respectively set to two, and the first overlapping portion 11b and the second overlapping portion 11c of the intermediate boron plate unit 111 are respectively set to be flip-symmetrical. The first overlapping portion 11b and the second overlapping portion 11c of the intermediate boron plate unit 111 are respectively set to be flip-symmetrical, that is, it does not matter which side is facing up and which side is facing down. There is no need to consider the front and back sides of the intermediate boron plate unit 111 during installation, which helps to improve assembly efficiency. According to the requirements of the size of the foamed ceramic, a number of intermediate boron plate units 111 can be overlapped with each other to form a pattern similar to the intermediate boron plate unit 111.

[0051] The edge boron plate unit 112 is used to overlap with the adjacent middle boron plate unit 111 and the edge boron plate 1 , and the corner boron plate unit 113 is used to overlap with the adjacent edge boron plate 1 .

[0052] Specifically, combined Fig.10 As the side boron plate unit 112 overlapping the width direction of the middle boron plate unit 111, such as the first side boron plate unit 112a, the second side boron plate unit 112b (refer to Fig.11 and Fig.12 ), the first overlapping portion 11b is set as one, which overlaps with the first overlapping portion 11b of the middle boron plate unit 111, and the second overlapping portion 11c of the edge boron plate unit 112 is set as two, which are arranged at both ends of the body 11' of the edge boron plate unit 112, and the step surfaces B of the two second overlapping portions 11c of the edge boron plate unit 112 are tangent; as the edge boron plate unit 112 overlapping with the length direction of the middle boron plate unit 111, such as the third edge boron plate unit 112c, the fourth edge boron plate unit 112d (reference Fig.13 and Fig.14 ), the second overlapping portion 11c is set as one, which overlaps with the second overlapping portion 11c of the middle boron plate unit 111, and the first overlapping portion 11b of the edge boron plate unit 112 is set as two, which are arranged at both ends of the main body 11' of the edge boron plate unit 112, and the step surfaces B of the two first overlapping portions 11b of the edge boron plate unit 112 are tangent.

[0053] Combination Figure 15-18In this embodiment, the corner boron plate unit 113 includes a first corner boron plate unit 113a, a second corner boron plate unit 113b, a third corner boron plate unit 113c, and a fourth corner boron plate unit 113d. The first overlapping portion 11b and the second overlapping portion 11c of the corner boron plate unit 113 are each provided as one, and the first overlapping portion 11b of the corner boron plate unit 113 is used to overlap with the first overlapping portion 11b of the edge boron plate unit 112, and the second overlapping portion 11c of the corner boron plate unit 113 is used to overlap with the second overlapping portion 11c of the edge boron plate unit 112.

[0054] In addition, the roller kiln car of this embodiment further comprises a bearing frame (not shown in the figure), the bottom of which is provided with a support beam perpendicular to the rollers in the roller kiln, and the boron plate 1 is arranged on the bearing frame.

[0055] In summary, the implementation of the present invention has the following beneficial effects:

[0056] 1. Each boron plate unit 11 is connected to the staggered connection part 11a on another boron plate unit through its own staggered connection part 11a, so that the connection edge A of the connected boron plate units 11 is blocked by the staggered connection part 11a, which can avoid the generation of gaps between the boron plate units 11 when the boron plates 1 are spliced, so that the foamed ceramic powder is heated more evenly in the accommodating cavity 3, and the stress of the fired foamed ceramic is more uniform when cooling, which can reduce the generation of transverse and longitudinal cracks and improve the product quality rate;

[0057] 2. In addition, during the conveying process of the roller kiln car on the roller rod, the boron plate units 11 overlap, embed or abut each other, and are not easily displaced. The structure is more stable, ensuring the reliability of the quality of the foamed ceramics;

[0058] 3. Due to the stable structure between the boron plate units 11, the roller kiln car of this structure can choose to enter the kiln horizontally (i.e. the length direction of the boron plate unit 11 is consistent with the roller rod) or vertically (i.e. the length direction of the boron plate unit 11 is perpendicular to the roller rod), which is more flexible to operate.

[0059] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A roller kiln car for high reliability foamed ceramic production, characterized in that: Including boron plate and A mold frame, which is placed on top of the boron plate and cooperates with the boron plate to form a receiving cavity for accommodating foamed ceramic powder; The boron plate comprises a plurality of boron plate units, each of which is provided with a main body and a staggered connection portion; Each of the boron plate units is connected to the staggered connection portion on another boron plate unit through its own staggered connection portion, so that the connection edges of the connected boron plate units are blocked by the staggered connection portion; The staggered connection portion includes a first overlapping portion and / or a second overlapping portion; The first overlapping portion extends in the width direction of the body, and the second overlapping portion extends in the length direction of the body. The first overlapping portion and the second overlapping portion are both provided with step surfaces. The step surfaces of the first overlapping portions of adjacent boron plate units overlap each other, and the step surfaces of the second overlapping portions of adjacent boron plate units overlap each other. The back surfaces of the step surfaces of the first overlapping portion and the second overlapping portion are both flush with the surface of the body; The boron plate unit comprises an intermediate boron plate unit. The first overlapping portion and the second overlapping portion of the intermediate boron plate unit are respectively provided in two numbers. The first overlapping portion and the second overlapping portion of the intermediate boron plate unit are respectively arranged in flip symmetry.

2. The roller kiln car for high reliability foamed ceramic production according to claim 1, characterized in that: The staggered connection parts are formed by connection parts staggeredly extending from the surface, and the longitudinal section of the staggered connection parts is wavy, sawtooth or long strip. The staggered connection parts of adjacent boron plate units are connected by overlapping, embedding or abutting each other.

3. The roller kiln car for high reliability foamed ceramic production according to claim 1, characterized in that: The bodies of adjacent boron plate units abut against each other.

4. The roller kiln car for producing high-reliability foamed ceramics according to claim 1, characterized in that: The step surface of the first overlapping portion is flush with or tangent to the step surface of the second overlapping portion.

5. The roller kiln car for producing high-reliability foamed ceramics according to claim 1, characterized in that: The boron plate unit also includes an edge boron plate unit and a corner boron plate unit. The edge boron plate unit is used to overlap with the adjacent middle boron plate unit and edge boron plate, and the corner boron plate unit is used to overlap with the adjacent edge boron plate.

6. The roller kiln car for producing high-reliability foamed ceramics according to claim 5, characterized in that: The first overlapping portion of the edge boron plate unit is provided as one, which overlaps with the first overlapping portion of the middle boron plate unit, and the second overlapping portions of the edge boron plate unit are provided as two, which are provided at both ends of the body of the edge boron plate unit, and the step surfaces of the two second overlapping portions of the edge boron plate unit are tangent; or The second overlapping portion of the edge boron plate unit is set to one, which overlaps with the second overlapping portion of the middle boron plate unit. The first overlapping portions of the edge boron plate unit are set to two, which are arranged at both ends of the body of the edge boron plate unit. The step surfaces of the two first overlapping portions of the edge boron plate unit are tangent.

7. The roller kiln car for producing high-reliability foamed ceramics according to claim 5, characterized in that: The first overlapping portion and the second overlapping portion of the corner boron plate unit are each set to one, the first overlapping portion of the corner boron plate unit is used to overlap with the first overlapping portion of the edge boron plate unit, and the second overlapping portion of the corner boron plate unit is used to overlap with the second overlapping portion of the edge boron plate unit.

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