A kiln replacement chamber exhaust pressure holding device

Abstract

This utility model discloses a kiln displacement chamber exhaust and pressure-maintaining device, relating to the field of kiln equipment. The device includes a displacement chamber and an exhaust and pressure-maintaining unit, with the unit connected to the outside of the displacement chamber. The displacement chamber has a working area, and a connection port is provided on the outside of the working area. The exhaust and pressure-maintaining unit includes a stainless steel cover plate and a pneumatic butterfly valve. The stainless steel cover plate is located directly above the connection port, and an air outlet is provided on the top of the cover plate. The pneumatic butterfly valve is fitted onto the outside of the air outlet. This kiln displacement chamber exhaust and pressure-maintaining device effectively prevents air from entering the furnace, stabilizes the internal atmosphere, and reduces the risk of oxygen content fluctuations. It also enables pressure regulation during the furnace entry and exit processes, reducing furnace pressure fluctuations and protecting the material reaction process. The gas displacement flow rate can be adjusted via a manual valve, allowing for flexible system operation and adaptation to different operating conditions. Furthermore, it improves the consistency of material reaction, reduces scrap rates, and increases yield.

Description

Technical Field

[0001] This utility model relates to the field of kiln equipment technology, specifically to a kiln replacement chamber exhaust and pressure-maintaining device. Background Technology

[0002] During the production and operation of roller kilns, the front and rear replacement chambers typically employ a two-stage lifting furnace door structure.

[0003] When saggers are moved in and out of the furnace, the opening and closing of the furnace door allows outside air to enter the furnace chamber, causing instability in the internal atmosphere. Simultaneously, the opening and closing of the furnace door disrupts the original seal, causing pressure fluctuations within the furnace. These factors directly affect the reaction process of materials within the furnace, leading to increased product scrap rates and decreased product consistency, severely restricting the stability of the kiln process and the improvement of product yield. Therefore, a device capable of solving these problems is urgently needed.

[0004] When the saggers are moved in and out of the furnace, external air enters the furnace chamber, causing instability in the internal atmosphere. The opening and closing of the furnace door disrupts the original seal, causing pressure fluctuations inside the furnace. This affects the reaction process of materials in the furnace, leading to an increase in product scrap rate and a decrease in product consistency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a kiln replacement chamber exhaust and pressure-maintaining device, which solves the problems of: ① external air entering the furnace chamber during the entry and exit of saggers, causing instability in the furnace atmosphere; ② the opening and closing of the furnace door disrupting the original sealing state, causing pressure fluctuations inside the furnace; and affecting the reaction process of materials in the furnace, leading to increased product scrap rate and decreased product consistency.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a kiln replacement chamber exhaust pressure holding device, comprising a replacement chamber and an exhaust pressure holding unit, wherein the exhaust pressure holding unit is connected to the outside of the replacement chamber, the replacement chamber is provided with a working area, and a connection port is opened on the outside of the working area;

[0007] The exhaust pressure holding unit includes:

[0008] A stainless steel cover plate is located directly above the connection port and is used to seal the connection port. An air vent is provided on the top of the stainless steel cover plate.

[0009] A pneumatic butterfly valve, wherein the pneumatic butterfly valve is sleeved on the outside of the air outlet.

[0010] Preferably, the replacement chamber is provided with a front end and a rear end, which are located on the front and rear sides of the working area. The top of the rear end is connected to a kiln exhaust pipe, and the rear end is used to connect to the kiln.

[0011] Preferably, a front gate chamber is provided at the front of the working area, and a first gate is provided inside the front gate chamber. A rear gate chamber is connected to the rear of the working area, and a second gate is provided inside the rear gate chamber.

[0012] Preferably, the first gate is used to seal and isolate the front end from the working area, and the second gate is used to seal and isolate the rear end from the working area.

[0013] Preferably, a fixing bolt is inserted into the stainless steel cover plate, and the fixing bolt is inserted into the outside of the connection port.

[0014] Preferably, a pneumatic component is connected to the outside of the pneumatic butterfly valve, a hand valve is connected to the output end of the pneumatic butterfly valve, an exhaust branch pipe is connected to the hand valve, and a replacement exhaust pipe is connected to the exhaust branch pipe.

[0015] Preferably, the replacement exhaust pipe is connected to the outside of the kiln exhaust pipe.

[0016] Its beneficial effects are as follows:

[0017] 1. The kiln's replacement chamber exhaust and pressure-maintaining device effectively prevents air from entering the furnace, stabilizes the internal atmosphere, and reduces the risk of oxygen content fluctuations.

[0018] 2. The kiln replacement chamber exhaust pressure maintaining device realizes pressure regulation during the furnace feeding and discharging process, reduces furnace pressure fluctuations, and protects the material reaction process;

[0019] 3. The gas replacement chamber exhaust pressure maintaining device of this kiln allows the gas replacement flow rate to be adjusted via a manual valve, making the system flexible in operation and adaptable to different working conditions;

[0020] 4. The kiln's replacement chamber exhaust and pressure-maintaining device improves the consistency of material reaction, reduces scrap rate, and increases yield.

[0021] 5. The kiln replacement chamber exhaust pressure holding device has a simple modification structure, low cost, and is easy to implement, and has wide applicability and promotion value. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the replacement chamber of this utility model;

[0025] Figure 3 This is a cross-sectional structural diagram of the replacement chamber of this utility model;

[0026] Figure 4 This is a schematic diagram of the exhaust pressure holding unit of this utility model.

[0027] In the diagram: 1. Replacement chamber; 11. Front end; 12. Rear end; 121. Kiln exhaust pipe; 13. Working area; 131. Front gate chamber; 1311. First gate; 132. Rear gate chamber; 1321. Second gate; 133. Connection port; 2. Exhaust pressure holding unit; 21. Stainless steel cover plate; 211. Fixing bolt; 212. Air outlet; 22. Pneumatic butterfly valve; 221. Pneumatic assembly; 23. Hand valve; 24. Replacement exhaust pipe; 241. Exhaust branch pipe. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0030] This utility model discloses a kiln replacement chamber exhaust pressure maintaining device, according to the attached... Figure 1-2 As shown, it includes a replacement chamber 1 and an exhaust pressure holding unit 2. The exhaust pressure holding unit 2 is connected to the outside of the replacement chamber 1. The replacement chamber 1 is provided with a working area 13, and a connection port 133 is opened on the outside of the working area 13. The exhaust pressure holding unit 2 includes a stainless steel cover plate 21 and a pneumatic butterfly valve 22. The stainless steel cover plate 21 is located directly above the connection port 133 and is used to close the connection port 133. An air outlet 212 is provided on the top of the stainless steel cover plate 21. The pneumatic butterfly valve 22 is sleeved on the outside of the air outlet 212.

[0031] This kiln replacement chamber exhaust and pressure-maintaining device effectively prevents air from entering the furnace, stabilizes the internal atmosphere, and reduces the risk of oxygen content fluctuations. It also enables pressure regulation during the furnace entry and exit processes, reducing furnace pressure fluctuations and protecting the material reaction process. The gas replacement flow rate can be adjusted via manual valve 23, allowing for flexible system operation and adaptation to different working conditions. This improves the consistency of material reaction, reduces scrap rate, and increases yield. The modification structure is simple, low-cost, and easy to implement, possessing wide applicability and promotional value.

[0032] According to the appendix Figure 1-2 As shown, the replacement chamber 1 is further provided with a front end 11 and a rear end 12. The front end 11 and the rear end 12 are located on the front and rear sides of the working area 13. The top of the rear end 12 is connected to the kiln exhaust pipe 121, and the rear end 12 is used to connect to the kiln.

[0033] According to the appendix Figure 1-2 As shown, a front gate chamber 131 is further provided on the front side of the working area 13, and a first gate 1311 is provided inside the front gate chamber 131. A rear gate chamber 132 is connected to the rear side of the working area 13, and a second gate 1321 is provided inside the rear gate chamber 132.

[0034] According to the appendix Figure 1-2 As shown, specifically disclosed, the first gate 1311 is used to seal and isolate the front end 11 and the working area 13, and the second gate 1321 is used to seal and isolate the rear end 12 and the working area 13.

[0035] According to the appendix Figure 1-3 As shown, a fixing bolt 211 is inserted into the stainless steel cover plate 21. The fixing bolt 211 is inserted into the outside of the connection port 133 to achieve a stable connection between the stainless steel cover plate 21 and the replacement chamber 1.

[0036] According to the appendix Figure 1-3 As shown, it is important to emphasize that the pneumatic butterfly valve 22 is connected to a pneumatic assembly 221 on the outside, a hand valve 23 is connected to the output end of the pneumatic butterfly valve 22, an exhaust branch pipe 241 is connected to the hand valve 23, and a replacement exhaust pipe 241 is connected to the exhaust branch pipe 24.

[0037] According to the appendix Figure 1-3 As shown, it is particularly important to emphasize that the replacement exhaust pipe 24 is connected to the outside of the kiln exhaust pipe 121.

[0038] Working principle: During operation, the pneumatic butterfly valve 22 is linked with the control system of the first gate 1311 and the second gate 1321. When the sagger enters the furnace, the first gate 1311 rises. After the sagger enters the working area 13, the first gate 1311 closes. After the first gate 1311 is fully closed, the pneumatic component 221 drives the pneumatic butterfly valve 22 to open, starting gas replacement. The replacement air volume is adjusted by the manual valve 23. When the main furnace meets the sagger entry conditions, the pneumatic butterfly valve 22 closes the moment the second gate 1321 rises, maintaining stable pressure inside the furnace.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A kiln displacement chamber exhaust pressure holding device, comprising a displacement chamber (1) and an exhaust pressure holding unit (2), wherein the exhaust pressure holding unit (2) is connected to the outside of the displacement chamber (1), characterized in that, The replacement chamber (1) is provided with a working area (13), and a connection port (133) is provided on the outside of the working area (13); The exhaust pressure holding unit (2) includes: A stainless steel cover plate (21) is located directly above the connection port (133) and is used to close the connection port (133). An air outlet (212) is provided on the top of the stainless steel cover plate (21). A pneumatic butterfly valve (22) is sleeved on the outside of the air outlet (212).

2. A kiln displacement chamber exhaust pressure maintaining device according to claim 1, characterized in that, The replacement chamber (1) is provided with a front end (11) and a rear end (12). The front end (11) and the rear end (12) are located on the front and rear sides of the working area (13). The top of the rear end (12) is connected to the kiln exhaust pipe (121). The rear end (12) is used to connect to the kiln.

3. A kiln displacement chamber exhaust pressure maintaining device according to claim 1, characterized in that, A front gate chamber (131) is provided on the front side of the working area (13), and a first gate (1311) is provided on the inner side of the front gate chamber (131). A rear gate chamber (132) is connected to the rear side of the working area (13), and a second gate (1321) is provided on the inner side of the rear gate chamber (132).

4. A kiln displacement chamber exhaust pressure maintaining device according to claim 3, characterized in that, The first gate (1311) is used to seal and isolate the front end (11) and the working area (13), and the second gate (1321) is used to seal and isolate the rear end (12) and the working area (13).

5. A kiln displacement chamber exhaust pressure maintaining device according to claim 1, characterized in that, A fixing bolt (211) is inserted into the stainless steel cover plate (21), and the fixing bolt (211) is inserted into the outside of the connection port (133).

6. A kiln displacement chamber exhaust pressure maintaining device according to claim 1, characterized in that, The pneumatic butterfly valve (22) is connected to a pneumatic assembly (221) on the outside. The pneumatic butterfly valve (22) is connected to a hand valve (23) at its output end. The hand valve (23) is connected to an exhaust branch pipe (241). The exhaust branch pipe (241) is connected to a replacement exhaust pipe (24).

7. A kiln displacement chamber exhaust pressure maintaining device according to claim 6, characterized in that, The replacement exhaust pipe (24) is connected to the outside of the kiln exhaust pipe (121).

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