Ultrahigh-temperature smoke sealing soft curtain gate valve structure

Abstract

The utility model provides an ultra-high temperature smoke sealing soft curtain gate valve structure which comprises a plurality of groups of sealing gate valves which are installed on the inner circumferential wall of a continuous tunnel kiln and are attached to a material carrier in a sealing mode, each sealing gate valve comprises a fixing piece, a soft curtain body and a fastening rod, one end of the soft curtain body is connected with the fixing piece through the fastening rod, and the other end of the soft curtain body is connected with the material carrier. And the fixing piece is mounted on the inner wall of the continuous tunnel kiln. The structure can be tightly attached and sealed to the two sides and the top of a material carrier, and the interval dynamic sealing problem of an existing continuous tunnel kiln is effectively solved; the device can be arranged at any position of a tunnel, functional areas are effectively isolated, the heating efficiency and the temperature control precision of the kiln are guaranteed, and operation such as waste heat utilization is more efficient. And the device is compact in structure, simple to manufacture, easy to install, low in cost, convenient to replace and low in maintenance and use cost.

Description

Technical Field

[0001] The utility model relates to a continuous tunnel kiln, in particular to a super-high temperature flue gas sealing flexible curtain gate valve structure. Background Art

[0002] During the production process of high-temperature kilns, it is necessary to isolate the internal environment of the kiln from the outside to ensure the stability of the temperature inside the kiln and efficient heating. The existing sealing of kilns is usually a door-like structure: the door panel and the door frame are usually hinged and rotated to open and close, and some are gate-shaped and opened and closed up and down. This is basically suitable for intermittent kilns, but for continuous tunnel kilns, because their materials or transportation tools are continuous, the traditional door-like structure cannot be applied. Therefore, a new sealing structure is needed to adapt to this continuous or intermittent production form. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is: aiming at the sealing problem existing in the existing continuous tunnel kiln, a super-high temperature flue gas sealing flexible curtain gate valve structure is provided.

[0004] The utility model adopts the following technical solutions to solve the above technical problems:

[0005] A super-high temperature flue gas sealing flexible curtain gate valve structure, comprising a plurality of groups of sealing gate valves installed on the inner peripheral wall of a continuous tunnel kiln and fitting and sealing with a material carrier, wherein: the sealing gate valve comprises a fixing piece, a flexible curtain body and a fastening rod, one end of the flexible curtain body is connected to the fixing piece through the fastening rod, and the fixing piece is installed on the inner wall of the continuous tunnel kiln.

[0006] Preferably, the fixing piece adopts a cylindrical open brick, and an opening is provided on its side wall along its length direction.

[0007] Preferably, the flexible curtain body is a single-layer structure or a double-layer structure formed by folding a single layer in half.

[0008] Preferably, the flexible curtain body adopts a high-temperature resistant fiber felt, which is made of ceramic fiber, alumina (ceramic) fiber or polycrystalline mullite fiber.

[0009] Preferably, the fastening rod is made of ceramic, alumina ceramic, mullite, quartz ceramic or silicon carbide.

[0010] Preferably, an insulation layer insertion opening for installing the fixing piece is provided on the insulation layer of the inner peripheral wall of the continuous tunnel kiln.

[0011] Preferably, each group of the sealing gate valves is three, and they are respectively installed on the left side, the top and the right side of the inner peripheral wall of the continuous tunnel kiln, and are arranged in an n shape.

[0012] More preferably, several groups of the said gate valves are respectively installed at the inlet of the preheating zone, the inlets and outlets of the firing zone, and the outlet of the forced cooling zone of the continuous tunnel kiln.

[0013] More preferably, at least one group of the said gate valves arranged in an "n" shape is provided at the inlet of the preheating zone, the inlets and outlets of the firing zone, and / or the outlet of the forced cooling zone.

[0014] Preferably, the material carrier is arranged on the traveling track through a carrier cart.

[0015] Adopting the above technical solutions, compared with the prior art, the utility model has the following technical effects:

[0016] The structure of the ultra-high temperature flue gas sealing flexible curtain gate valve provided by the utility model is composed of an integral connection of a fixing part, a flexible curtain body and a fastening rod, which is closely attached and sealed to both sides and the top of the material carrier, effectively solving the problem of dynamic sealing in the intervals of the existing continuous tunnel kiln. It can be set at any place in the tunnel, effectively isolating each functional area, ensuring the heating efficiency and temperature control accuracy of the kiln, and making operations such as waste heat utilization more efficient; moreover, its structure is compact, simple to manufacture, easy to install, low in cost, convenient to replace, and low in maintenance and use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the application structure of a structure of an ultra-high temperature flue gas sealing flexible curtain gate valve of the utility model in a continuous tunnel kiln Figure 1 ;

[0018] Figure 2 is a schematic diagram of the application structure of a structure of an ultra-high temperature flue gas sealing flexible curtain gate valve of the utility model in a continuous tunnel kiln Figure 2 ;

[0019] Figure 3 is a schematic three-dimensional structure diagram of a structure of an ultra-high temperature flue gas sealing flexible curtain gate valve of the utility model;

[0020] Figure 4 is an exploded structure diagram of a structure of an ultra-high temperature flue gas sealing flexible curtain gate valve of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments.

[0022] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without making creative efforts fall within the scope of protection of the utility model.

[0023] In some embodiments, such as Figure 1 and Figure 2 shown, a super-high temperature flue gas sealing flexible curtain gate valve structure is provided. The gate valve structure mainly includes a number of groups of sealing gate valves 20 installed at the joints of each area on the inner peripheral wall of the continuous tunnel kiln 10 and at the entrances and exits at both ends thereof. The number of groups of sealing gate valves 20 is in sealing contact with the top and both side walls of the continuously moving material carrier 30. The material carrier 30 is arranged on the traveling track 50 through the carrier trolley 40 and gradually passes through the continuous tunnel kiln 10 along with the carrier trolley 40. The sealing gate valve 20 is used to seal and connect the material carrier 30 at the joints of each area, effectively solving the problem of dynamic sealing between sections of the existing continuous tunnel kiln.

[0024] Specifically, as Figure 3 and Figure 4 shown, the sealing gate valve 20 is mainly composed of a fixing member 21, a flexible curtain body 22 and a fastening rod 23 assembled into one body. One end of the flexible curtain body 22 is installed on the fixing member 21 through the fastening rod 23, and the fixing member 21 is installed on the inner wall of the continuous tunnel kiln 10. The other end of the flexible curtain body 22 extends freely and fits freely with the material carrier 30.

[0025] A single sealing gate valve 20 installed on the inner wall of the continuous tunnel kiln 10 is in close contact with one surface of the material carrier 30. When the flexible curtain body 22 contacts the side wall or the top of the material carrier 30, it undergoes elastic deformation due to its softness, so that the flexible curtain body 22 tightly adheres to the material carrier 30, realizing reliable sealing between the single sealing gate valve 20 and the material carrier 30.

[0026] As described above, a plurality of sealing gate valves 20 arranged circumferentially along the inner wall of the continuous tunnel kiln 10 are partially overlapped at the joints with each other, avoiding the generation of gaps between adjacent sealing gate valves 20 and ensuring full sealing of both sides and the top of the material carrier 30.

[0027] In some of these embodiments, such as Figure 3 and Figure 4 shown, the fixing member 21 is a cylindrical open brick, which is made of ceramic material and fired integrally. And for the convenience of installing the flexible curtain body 22 and the fastening rod 23, an opening 211 is provided on the side wall of the cylindrical open brick along its length direction.

[0028] According to requirements, the flexible curtain body 22 can adopt a single-layer structure. One end of the flexible curtain body 22 is embedded in the opening 211 and firmly pressed and fixed in the opening 211 of the fixing member 21 by the fastening rod 23 to complete the assembly of the sealing gate valve 20.

[0029] As one of the preferred embodiments, such as Figure 3 andFigure 4 As shown, to improve the sealing performance when the single-sealing gate valve 20 contacts the material carrier 30, the single-layer soft curtain body 22 is first folded in half into a double-layer structure, and the bent end is inserted into the opening 211 of the fixing member 21. Then, a fastening rod 23 is inserted into the gap of the folded soft curtain body 22 and pressed and fixed in the opening 211 of the fixing member 21, so that the soft curtain body 22 completely fills the opening 211.

[0030] Of course, as an alternative technical solution, according to the usage requirements, the soft curtain body 22 can also adopt a multi-layer structure of repeated folding. One end is firmly pressed and fixed in the opening 211 of the fixing member 21 by a fastening rod 23, and the other end at the folding position is cut open to form multi-layer independent sheets.

[0031] In addition, in terms of specific material selection, to adapt to the high-temperature working environment of the continuous tunnel kiln 100, the material of the soft curtain body 22 must be a material that is heat-resistant in an oxygen-containing environment. For example, the soft curtain body 22 is selected to be a high-temperature resistant fiber felt that can withstand 1600°C, and it is made of ceramic fiber, alumina (ceramic) fiber or polycrystalline mullite fiber. Preferably, the soft curtain body 22 is made of a high-temperature resistant ceramic fiber felt. Of course, according to the needs, the material selection of the soft curtain body 22 can be flexibly configured according to the process temperature of the kiln, and an inorganic fiber felt with an appropriate refractory temperature can be selected. The fastening rod 23 is made of ceramic, alumina ceramic, mullite, quartz ceramic or silicon carbide; preferably, the fastening rod 23 is made of a ceramic rod.

[0032] As Figure 3 and Figure 4 shown, in some embodiments, the cross-sectional shapes of the fixing member 21 and the fastening rod 23 are circular, and the inner hole of the fixing member 21 is also circular, which is convenient for the installation of the fastening rod 23. Of course, as an alternative technical solution, according to the needs, the cross-sectional shapes of the fixing member 21 and the fastening rod 23 can also be other shapes such as rectangular.

[0033] In some embodiments, as Figure 1 and Figure 2 shown, to facilitate the installation and fixation of the sealing gate valve 20, a number of insulation layer insertion openings 11 for installing the fixing member 21 are respectively provided on the heat insulation layers on both side walls and the top corresponding to the material carrier 30 in the continuous tunnel kiln 10. During use, the fixing member 21 at the head end of the sealing gate valve 20 is pressed into the insulation layer insertion opening 11, and the installation of the sealing gate valve 20 can be completed.

[0034] Of course, according to the needs, to prevent the sealing gate valve 20 from falling off during use, screws and pressing plates can be used to firmly fix the fixing member 21 on the heat insulation layer, which is also convenient for the installation and disassembly of the sealing gate valve 20 and facilitates replacement and maintenance.

[0035] In some of these embodiments, as Figure 1 and Figure 2 shown, each group of the gate valves 20 is three in number, and they are respectively installed on the left side, top and right side of the inner peripheral wall of the continuous tunnel kiln 10, arranged in an "n" shape, and not arranged at the lower end. When the material carrier 300 passes through the three gate valves 20 arranged in an "n" shape, the soft curtain body 22 will closely adhere to both sides and the top of the material carrier 300 to form a three-sided seal.

[0036] In some of these embodiments, the several groups of the gate valves 20 are respectively installed at the entrance of the preheating zone, the entrance and exit of the firing zone, and the exit of the forced cooling zone of the continuous tunnel kiln 10. For better sealing effect, at least one group of the gate valves 20 arranged in an "n" shape is provided at the entrance of the preheating zone, the entrance and exit of the firing zone, and / or the exit of the forced cooling zone.

[0037] Preferably, three groups of the gate valves 20 arranged in an "n" shape are provided at the entrance of the preheating zone, the entrance and exit of the firing zone, and / or the exit of the forced cooling zone.

[0038] As described above, the size of the intermediate channel formed between each group of the gate valves 20 arranged in an "n" shape is slightly smaller than that of the material carrier shuttling therebetween. In this way, when the material carrier 300 passes through this intermediate channel, the soft curtain body 22 will bend and deform and then closely adhere to the side wall and top of the material carrier 300 to form a reliable seal. And after a period of time for each gate valve 20, when the soft curtain body 22 is worn to a certain extent, it can be entirely withdrawn for replacement and then reinstalled, which is convenient for replacement and maintenance.

[0039] As Figure 1 and Figure 2 shown, several gate valves 20 assembled from fixing members 21, soft curtain bodies 22 and fastening rods 23 are adopted, and are arranged in an "n" shape on the inner peripheral wall of the continuous tunnel kiln 10 as a whole. When the material carrier 30 passes through, its two sides and the top are closely fitted and sealed with the gate valves 20, effectively solving the problem of dynamic sealing in intervals of the existing continuous tunnel kiln.

[0040] This ultra-high temperature flue gas sealing soft curtain gate valve structure can be set at any place in the tunnel, such as at the entrance of the preheating zone, the entrance and exit of the firing zone, and / or the exit of the forced cooling zone, which can effectively isolate each functional zone, ensure the heating efficiency and temperature control accuracy of the kiln, and make operations such as waste heat utilization more efficient; and its structure is compact, simple to manufacture, easy to install, low in cost, convenient for replacement, and low in maintenance and use cost.

[0041] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installed", "connected", and "linked" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0042] Second, in the drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the usual designs. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0043] Finally, the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An ultra-high temperature flue gas sealed soft curtain gate valve structure, characterized in that: It includes several groups of sealing gate valves installed on the inner wall of the continuous tunnel kiln and sealed with the material carrier, wherein: the sealing gate valve includes a fixing part, a soft curtain body and a fastening rod, one end of the soft curtain body is connected to the fixing part through the fastening rod, and the fixing part is installed on the inner wall of the continuous tunnel kiln.

2. The ultra-high temperature flue gas sealed soft curtain gate valve structure according to claim 1 is characterized in that: The fixing piece is a cylindrical open brick, and the side wall thereof is provided with openings along the length direction thereof.

3. The ultra-high temperature flue gas sealed soft curtain gate valve structure according to claim 1 is characterized in that: The soft curtain body is a single-layer structure, or a double-layer structure formed by folding a single layer in half.

4. The ultra-high temperature flue gas sealed soft curtain gate valve structure according to claim 1 is characterized in that: The soft curtain body is made of high temperature resistant fiber felt, which is made of ceramic fiber, alumina fiber or polycrystalline mullite fiber.

5. The ultra-high temperature flue gas sealed soft curtain gate valve structure according to claim 1 is characterized in that: The fastening rod is made of ceramic, alumina ceramic, mullite, quartz ceramic or silicon carbide.

6. The ultra-high temperature flue gas sealed soft curtain gate valve structure according to claim 1 is characterized in that: The insulation layer of the inner peripheral wall of the continuous tunnel kiln is provided with an insulation layer embedding opening for installing the fixing member.

7. The ultra-high temperature flue gas sealed soft curtain gate valve structure according to claim 1 is characterized in that: Each group of sealing gate valves includes three valves, which are respectively installed on the left side, the top and the right side of the inner wall of the continuous tunnel kiln in an n-shaped arrangement.

8. The ultra-high temperature flue gas sealed soft curtain gate valve structure according to claim 7 is characterized in that: Several groups of sealing gate valves are respectively installed at the entrance of the preheating zone, the entrance and exit of the firing zone, and the exit of the forced cooling zone of the continuous tunnel kiln.

9. The ultra-high temperature flue gas sealed soft curtain gate valve structure according to claim 8, characterized in that: At least one group of sealing gate valves arranged in an n shape is provided at the entrance of the preheating zone, the entrance and the exit of the sintering zone and / or the exit of the forced cooling zone.

10. The ultra-high temperature flue gas sealed soft curtain gate valve structure according to claim 1, characterized in that: The material carrier is arranged on the running track through a carrying trolley.

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