Porous sintered brick energy-saving roasting device

Abstract

The utility model provides an energy-saving roasting device for porous sintered bricks, and relates to the technical field of brick sintering. The device comprises a sintering furnace, a neutralization tank, a rotating table, a gas guide pipe and an exhaust pipe, and a hearth is arranged in the sintering furnace; the neutralization tank comprises a tank body, a partition plate and an air entraining unit, the interior of the tank body is divided into a first inner cavity and a second inner cavity by the partition plate, a first air inlet and a first air outlet are formed in the first inner cavity, a second air inlet and a second air outlet are formed in the second inner cavity, and the tank body is arranged on the rotating table and located between the exhaust pipe and the air guide pipe; the air entraining unit can introduce air in one of the first inner cavity and the second inner cavity, which is close to the air guide pipe, into the other one of the first inner cavity and the second inner cavity; one end of the gas guide pipe is connected with the hearth, the other end of the gas guide pipe leads to the interior of one of the first inner cavity and the second inner cavity close to the gas guide pipe, and the exhaust pipe is communicated with the other one of the first inner cavity and the second inner cavity. The method has the effects of saving material resources, saving energy and reducing consumption.

Description

Technical Field

[0001] This application relates to the field of brick sintering technology, and in particular to an energy-saving firing device for porous sintered bricks. Background Technology

[0002] Porous sintered bricks are a new type of energy-saving building wall material. They are mainly made of raw materials such as clay and shale through high-temperature sintering and have a unique porous structure.

[0003] Existing porous sintered brick firing devices generally include a sintering furnace, an exhaust pipe, and a flue gas treatment device. The furnace chamber of the sintering furnace holds the brick blanks to be sintered. One end of the exhaust pipe is connected to the furnace chamber. The flue gas treatment device has two internal chambers, each containing a portion of alkaline solution. One chamber is connected to the other end of the exhaust pipe to neutralize the acidic gases generated during the sintering of the brick blanks. The lower liquid layer of the latter chamber is connected to the upper gas layer of the former chamber via a pipe. The upper gas layer of the latter chamber is connected to the outside, allowing the alkaline solution in the latter chamber to further purify the flue gas purified in the former chamber before discharging it to the outside. The two chambers of the flue gas treatment device also share a drain port, allowing the user to simultaneously drain the waste liquid from both chambers and refill them.

[0004] However, since the consumption rate of alkaline solution in the first inner chamber is much higher than that in the second inner chamber, there is still a lot of unused alkaline solution in the second inner chamber when waste is discharged at the same time. This makes the existing porous sintered brick calcining device wasteful of resources in purifying gas.

[0005] In view of this, there is a need to provide an energy-saving firing device for porous sintered bricks. Utility Model Content

[0006] To address the problem of wasted resources in purifying gas in existing porous sintered brick calcining devices, this application provides an energy-saving calcining device for porous sintered bricks.

[0007] This application provides an energy-saving calcining device for porous sintered bricks, which adopts the following technical solution: including a sintering furnace, a neutralization tank, a rotating table, a gas guide pipe and an exhaust pipe, wherein the interior of the sintering furnace is provided with a furnace chamber for calcining brick blanks;

[0008] The neutralization tank includes a tank body, a partition, and an air intake unit. The partition is disposed in the tank body and divides the interior of the tank body into a first inner cavity and a second inner cavity. The inner wall of the first inner cavity has a first air inlet and a first air outlet, and the inner wall of the second inner cavity has a second air inlet and a second air outlet. The tank body is disposed on the rotating platform and located between the exhaust pipe and the air guide pipe. The air intake unit is disposed on the partition and is capable of introducing gas from the first inner cavity and the second inner cavity near the air guide pipe into the other inner cavity.

[0009] One end of the gas guide pipe is connected to the top of the furnace, and the other end of the gas guide pipe leads to the interior of the first inner cavity and the second inner cavity near the gas guide pipe. When the gas guide pipe is connected to the first air inlet, the exhaust pipe is connected to the second air outlet. When the gas guide pipe is connected to the second air inlet, the exhaust pipe is connected to the first air outlet.

[0010] By adopting the above technical solution, the sintering furnace can fire the brick blanks, and the gas guide pipe can introduce the waste gas generated during the firing of the brick blanks into the neutralization tank. The user can first add an alkaline neutralization solution for neutralizing the acid washing substances in the waste gas into the first inner cavity and the second inner cavity, then control the rotary table to rotate the first air inlet to a position close to the gas guide pipe, then connect the gas guide pipe to the first air inlet, close the second air inlet, connect the exhaust pipe to the second air outlet, and close the first air outlet, so that the waste gas first enters the first inner cavity for the first acid-base neutralization, and then enters the second inner cavity through the gas induced unit for the second acid-base neutralization; after the first inner cavity... After the alkaline substances in the neutralization solution in the chamber are completely consumed, the user can control the rotary table to rotate the second air inlet to a position close to the air guide pipe. Then, connect the air guide pipe to the second air inlet, close the first air inlet, connect the exhaust pipe to the first air outlet, and close the second air outlet. Next, replace the neutralization solution in the first inner chamber as a whole, so that the exhaust gas first enters the second inner chamber for the first acid-base neutralization, and then enters the first inner chamber through the air intake unit for the second acid-base neutralization. This allows for full utilization of the neutralization solutions in both inner chambers, enabling the porous sintered brick energy-saving firing device to save material resources and achieve energy conservation and consumption reduction.

[0011] Specifically, the air intake unit includes a four-way pipe and two solenoid valves. The first inner cavity and the second inner cavity are each filled with a portion of the neutralization solution. The four-way pipe includes two air inlets and two water inlets. The first inner cavity and the second inner cavity each have one air inlet and one water inlet. Each air inlet is located at the top of the neutralization tank away from the neutralization solution, and each water inlet is located at the bottom of the neutralization tank and is submerged in the neutralization solution.

[0012] Each solenoid valve corresponds to one of the air inlets, and each solenoid valve is located on the corresponding air inlet and can control the opening and closing of the air inlet.

[0013] By adopting the above technical solution, the user can open the solenoid valve on the gas inlet closer to the gas inlet and close the solenoid valve on the gas inlet farther from the gas inlet, so that the gas in the inner cavity closer to the gas inlet passes through the four-way tube and enters the neutralization solution in another inner cavity.

[0014] Furthermore, the gas guide pipe is provided with a gas guide connector and a gas guide elastic element. One end of the gas guide connector is inserted into the end port of the gas guide pipe away from the sintering furnace and can block the port. The other end of the gas guide connector has a gas guide hole leading to the gas guide pipe. The gas guide connector is provided with a gas guide abutment protrusion. A gas guide receiving groove is provided on the inner wall of the gas guide pipe along the direction from near to far from the neutralization tank. The gas guide abutment protrusion is inserted into the gas guide receiving groove and can slide along the gas guide receiving groove.

[0015] The gas-guiding elastic element is disposed between the gas-guiding abutment protrusion and the inner wall of the gas-guiding receiving groove and can apply a force close to the neutralization tank to the gas-guiding abutment protrusion.

[0016] Both the first air inlet and the second air inlet are equipped with sealing valves. When the first air inlet is close to the air guide pipe, the air guide connector can be inserted into the first air inlet and the first air inlet is connected to the air guide pipe through the air guide hole. When the second air inlet is close to the air guide pipe, the air guide connector can be inserted into the second air inlet and the second air inlet is connected to the air guide pipe through the air guide hole.

[0017] By adopting the above technical solution, the design of the air guide connector and the air guide elastic element can facilitate the quick connection between the air guide tube and the first air inlet or the second air inlet; the design of the sealing valve allows the user to freely open and close the first air inlet and the second air inlet.

[0018] Furthermore, an inclined air-guiding surface is formed on the end face of the air-guiding connector near the neutralization tank, the opening of the air-guiding hole is located at the center of the inclined air-guiding surface, and the inclined air-guiding surface gradually tilts away from the neutralization tank in the direction from its center to its edge.

[0019] By adopting the above technical solution, when the neutralization tank rotates, the edge of the first air inlet or the second air inlet will abut against the inclined surface on the air guide connector and push the air guide connector away from the neutralization tank, thereby enabling the rapid separation of the air guide pipe from the first air inlet or the second air inlet.

[0020] Furthermore, the exhaust pipe is provided with an exhaust abutment and an exhaust elastic element. One end of the exhaust abutment is inserted into the end port of the exhaust pipe near the neutralization tank and can block the port. The other end of the exhaust abutment has an exhaust hole leading to the exhaust pipe. The exhaust abutment is provided with an exhaust abutment protrusion. An exhaust receiving groove is provided on the inner wall of the exhaust pipe along the direction from near to far from the neutralization tank. The exhaust abutment protrusion is inserted into the exhaust receiving groove and can slide along the exhaust receiving groove.

[0021] The exhaust elastic element is disposed between the exhaust abutment protrusion and the inner wall of the exhaust receiving groove and is capable of applying a force close to the neutralization tank to the exhaust abutment protrusion;

[0022] Both the first and second air outlets are equipped with sealing valves. When the first air outlet is close to the exhaust pipe, the exhaust abutment can be inserted into the first air outlet and the first air outlet can be connected to the exhaust pipe through the exhaust hole. When the second air outlet is close to the exhaust pipe, the exhaust abutment can be inserted into the second air outlet and the second air outlet can be connected to the exhaust pipe through the exhaust hole.

[0023] By adopting the above technical solution, the exhaust connector and the exhaust elastic element can facilitate the quick connection between the exhaust pipe and the first or second exhaust port; the sealing valve allows the user to freely open and close the first and second exhaust ports.

[0024] Furthermore, an venting inclined surface is formed on the end face of the venting connector near the neutralization tank, the opening of the venting hole is located at the center of the venting inclined surface, and the venting inclined surface gradually slopes away from the neutralization tank in the direction from its center to its edge.

[0025] By adopting the above technical solution, when the neutralization tank rotates, the edge of the first or second air outlet will abut against the inclined surface on the exhaust abutment and push the exhaust abutment away from the neutralization tank, thereby enabling the exhaust pipe to be quickly separated from the first or second air outlet.

[0026] Furthermore, it also includes a sealing assembly, which is provided at the first air inlet, the second air inlet, the first air outlet and the second air outlet. The sealing assembly includes a telescopic tube and a connecting flange. One end of the telescopic tube is connected to the neutralization tank and the other end of the telescopic tube is connected to the connecting flange.

[0027] The air guide pipe is provided with an air guide connecting flange, which can be connected to the abutment flange and make the telescopic pipe wrap around the connection between the first air inlet or the second air inlet and the air guide abutment.

[0028] The exhaust pipe is provided with an exhaust connection flange, which can be connected to the abutment flange and allow the telescopic pipe to wrap around the connection between the first or second exhaust port and the exhaust abutment joint.

[0029] By adopting the above technical solution, the user can connect the gas guide flange to the abutment flange at the first or second air inlet, so that the telescopic tube wraps around the connection between the gas guide pipe and the neutralization tank, thereby increasing the sealing performance of the connection; the user can also connect the exhaust connection flange to the abutment flange at the first or second air outlet, so that the telescopic tube wraps around the connection between the exhaust pipe and the neutralization tank, thereby increasing the sealing performance of the connection.

[0030] Furthermore, a sealing gasket is provided between the gas guide flange and the abutment flange, as well as between the exhaust flange and the abutment flange.

[0031] By adopting the above technical solution, the sealing gasket can further increase the sealing performance between the gas duct or exhaust pipe and the neutralization tank.

[0032] In summary, this application includes the following beneficial technical effects:

[0033] The system includes a sintering furnace, a neutralization tank, a rotating platform, a gas guide pipe, and an exhaust pipe. The sintering furnace has a furnace chamber for firing brick blanks. The neutralization tank includes a tank body, a baffle plate, and a gas induced draft unit. The baffle plate is located inside the tank body and divides the interior of the tank body into a first inner cavity and a second inner cavity. The inner wall of the first inner cavity has a first air inlet and a first air outlet, and the inner wall of the second inner cavity has a second air inlet and a second air outlet. The tank body is located on the rotating platform and between the exhaust pipe and the gas guide pipe. The gas induced draft unit is located on the baffle plate and is capable of induced draft of the gas from the first inner cavity and the second inner cavity. Gas is introduced from one chamber near the gas duct into the other. One end of the gas duct is connected to the top of the furnace, and the other end leads to the first and second inner cavities, near the gas duct. When the gas duct is connected to the first air inlet, the exhaust pipe is connected to the second air outlet; when the gas duct is connected to the second air inlet, the exhaust pipe is connected to the first air outlet. This allows the sintering furnace to fire the brick blanks, and the gas duct introduces the waste gas generated during the firing of the brick blanks into the neutralization tank. The user can first place the gas in the first and second inner cavities... An alkaline neutralization solution for neutralizing the acidic substances in the exhaust gas is added to the cavity. The rotary table is then controlled to rotate the first air inlet to a position close to the duct pipe. The duct pipe is then connected to the first air inlet, the second air inlet is closed, the exhaust pipe is connected to the second air outlet, and the first air outlet is closed. This allows the exhaust gas to first enter the first inner cavity for initial acid-base neutralization, and then pass through the induced draft unit into the second inner cavity for a second acid-base neutralization. After the alkaline substances in the neutralization solution in the first inner cavity are completely consumed, the user can control the rotary table to rotate the second air inlet... The air inlet is rotated to a position close to the air guide pipe. Then, the air guide pipe is connected to the second air inlet, the first air inlet is closed, the exhaust pipe is connected to the first air outlet, and the second air outlet is closed. Next, the neutralization solution in the first inner cavity is completely replaced so that the exhaust gas first enters the second inner cavity to be neutralized by acid and alkali for the first time, and then enters the first inner cavity through the air intake unit to be neutralized by acid and alkali for the second time. This allows full utilization of the neutralization solution in both inner cavities, enabling the porous sintered brick energy-saving calcining device to save material resources and achieve energy conservation and consumption reduction. Attached Figure Description

[0034] Figure 1 This is a perspective view of an energy-saving firing device for porous sintered bricks according to this application;

[0035] Figure 2 It is along Figure 1 A schematic cross-sectional view of the neutralization tank taken along its central axis, where the sintering furnace is not shown and only a portion of the gas guide pipe is shown;

[0036] Figure 3 yes Figure 2 A schematic enlarged view of area A in the middle, showing the exhaust pipe;

[0037] Figure 4 yes Figure 2A schematic enlarged view of region B, showing the air duct.

[0038] Reference numerals: 1. Sintering furnace; 2. Neutralization tank; 21. Tank body; 211. First inner cavity; 212. Second inner cavity; 213. Sealing valve; 22. Baffle plate; 23. Air intake unit; 231. Four-way pipe; 232. Solenoid valve; 3. Rotary table; 4. Air guide pipe; 41. Air guide joint; 411. Air guide hole; 412. Air guide inclined surface; 42. Air guide elastic element; 43. Air guide connecting flange; 5. Exhaust pipe; 51. Exhaust joint; 511. Exhaust hole; 512. Exhaust inclined surface; 52. Exhaust elastic element; 53. Exhaust connecting flange; 6. Sealing assembly; 61. Telescopic pipe; 62. Joint flange; 7. Sealing gasket. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-4 Further explanation:

[0040] See Figure 1 and Figure 2 The energy-saving firing device for porous sintered bricks provided in this application includes: a sintering furnace 1, a neutralization tank 2, a rotating table 3, a gas guide pipe 4, an exhaust pipe 5, and four sealing components 6. The sintering furnace 1 has a furnace chamber (not shown in the figure) for firing brick blanks. The neutralization tank 2 includes a tank body 21, a partition 22, and a gas induced unit 23. The partition 22 is located inside the tank body 21 and divides the interior of the tank body 21 into a first inner cavity 211 and a second inner cavity 212. A first air inlet and a first air outlet are provided on the inner wall of the first inner cavity 211, and a second air inlet and a second air outlet are provided on the inner wall of the second inner cavity 212. A sealing valve is provided in each of the first air inlet, the first air outlet, the second air inlet, and the second air outlet. The sealing valve can be a flap valve, so that the user can freely control the opening and closing of the first air inlet, the first air outlet, the second air inlet, and the second air outlet through the sealing valve.

[0041] See Figure 1 and Figure 2The tank 21 is mounted on the rotating platform 3 and located between the exhaust pipe 5 and the air guide pipe 4. The air intake unit 23 includes a four-way pipe 231 and two solenoid valves 232. The first inner cavity 211 and the second inner cavity 212 each contain a portion of the neutralization solution. The four-way pipe 231 includes two air inlets and two water inlets. The first inner cavity 211 and the second inner cavity 212 each have one air inlet and one water inlet. Each air inlet is located at the top of the neutralization tank 2, away from the neutralization solution. Each water inlet... All are located at the bottom of the neutralization tank 2 and are submerged in the neutralization solution. Each solenoid valve 232 corresponds to a gas inlet. Each solenoid valve 232 is located on the corresponding gas inlet and can control the opening and closing of the gas inlet. This allows the user to open the solenoid valve 232 on the gas inlet closer to the gas inlet 4 and close the solenoid valve 232 on the gas inlet farther from the gas inlet 4, so that the gas in the inner cavity closer to the gas inlet 4 passes through the four-way pipe 231 and enters the neutralization solution in another inner cavity.

[0042] See Figure 2 and Figure 4 One end of the gas guide pipe 4 is connected to the top of the furnace. The other end of the gas guide pipe 4 is provided with a gas guide connector 41 and a gas guide elastic element 42. One end of the gas guide connector 41 is inserted into the end port of the gas guide pipe 4 away from the sintering furnace 1 and can seal the port. The other end of the gas guide connector 41 has a gas guide hole 411 that leads into the gas guide pipe 4. The gas guide connector 41 is provided with a gas guide abutment protrusion. A gas guide receiving groove is provided on the inner wall of the gas guide pipe 4 along the direction from near to far from the neutralization tank 2. The gas guide abutment protrusion is inserted into the gas guide receiving groove and can slide along the gas guide receiving groove. The gas guide elastic element 42 is provided on the gas guide abutment protrusion. Between the gas guide elastic member 42 and the inner wall of the gas guide receiving groove, the gas guide elastic member 42 can be a compression spring, so that a force close to the neutralization tank 2 can be applied to the gas guide abutment protrusion through the gas guide elastic member 42, so that when the first air inlet is close to the gas guide pipe 4, the gas guide abutment 41 can be inserted into the first air inlet and the first air inlet is connected to the gas guide pipe 4 through the gas guide hole 411, and when the second air inlet is close to the gas guide pipe 4, the gas guide abutment 41 can be inserted into the second air inlet and the second air inlet is connected to the gas guide pipe 4 through the gas guide hole 411, thereby realizing the quick connection between the gas guide pipe 4 and the first air inlet or the second air inlet.

[0043] See Figure 2 and Figure 3One end of the exhaust pipe 5 can be directly connected to the outside or to a gas filtration device such as activated carbon. The other end of the exhaust pipe 5 is provided with an exhaust abutment 51 and an exhaust elastic member 52. One end of the exhaust abutment 51 is inserted into the port of the exhaust pipe 5 near the neutralization tank 2 and can seal the port. The other end of the exhaust abutment 51 has an exhaust hole 511 leading to the exhaust pipe 5. The exhaust abutment 51 has an exhaust abutment protrusion. An exhaust receiving groove is formed on the inner wall of the exhaust pipe 5 along the direction from near to far from the neutralization tank 2. The exhaust abutment protrusion is inserted into the exhaust receiving groove and can slide along the exhaust receiving groove. The elastic element 52 is disposed between the exhaust abutment protrusion and the inner wall of the exhaust receiving groove. The exhaust elastic element 52 can be a compression spring, so that a force close to the neutralization tank 2 can be applied to the exhaust abutment protrusion by the compression spring, so that when the first exhaust port is close to the exhaust pipe 5, the exhaust abutment 51 can be inserted into the first exhaust port and the first exhaust port can be connected to the exhaust pipe 5 through the exhaust hole 511. When the second exhaust port is close to the exhaust pipe 5, the exhaust abutment 51 can be inserted into the second exhaust port and the second exhaust port can be connected to the exhaust pipe 5 through the exhaust hole 511, thereby realizing the quick connection between the air guide pipe 4 and the first air inlet or the second air inlet.

[0044] Specifically, an inclined surface 412 can be provided on the end face of the gas guide connector 41 near the neutralization tank 2. This inclined surface 412 gradually slopes away from the neutralization tank 2 from its center to its edge. The opening of the gas guide hole 411 is located at the center of the inclined surface 412, so that when the neutralization tank 2 rotates, the edge of the first or second air inlet will abut against the inclined surface on the gas guide connector 41 and push the gas guide connector 41 away from the neutralization tank 2, thereby enabling rapid separation between the gas guide pipe 4 and the first or second air inlet. Furthermore, an exhaust inclined surface 512 can be provided on the end face of the exhaust abutment 51 near the neutralization tank 2. The exhaust inclined surface 512 gradually tilts away from the neutralization tank 2 in the direction from its center to its edge, and the opening of the exhaust hole 511 is located at the center of the exhaust inclined surface 512, so that when the neutralization tank 2 rotates, the edge of the first exhaust port or the second exhaust port will abut against the inclined surface on the exhaust abutment 51 and push the exhaust abutment 51 away from the neutralization tank 2, thereby enabling the exhaust pipe 5 to be quickly separated from the first exhaust port or the second exhaust port.

[0045] See Figure 2 , Figure 3 and Figure 4Each sealing assembly 6 includes a bellows-type telescopic tube 61 and an abutment flange 62. A telescopic tube 61 is fitted over the first air inlet, second air inlet, first air outlet, and second air outlet. One end of each telescopic tube 61 is connected to the neutralization tank 2, and the other end is connected to the abutment flange 62. The air guide pipe 4 has an air guide connection flange 43, allowing the user to connect the air guide connection flange 43 to the abutment flange 62 using bolts and nuts. This allows the telescopic tube 61 to cover the connection between the first or second air inlet and the air guide abutment flange 41, thereby increasing the sealing capacity. Sealing at the connection: The exhaust pipe 5 is provided with an exhaust connection flange 53, so that the user can connect the exhaust connection flange 53 to the abutment flange 62 by using bolts and nuts, so that the telescopic pipe 61 wraps around the connection between the first air outlet or the second air outlet and the exhaust abutment 51, thereby increasing the sealing at the connection; a sealing gasket 7 is provided between the air guide connection flange 43 and the abutment flange 62 and between the exhaust connection flange 53 and the abutment flange 62. The sealing gasket 7 can be a rubber gasket, so as to further increase the sealing between the air guide pipe 4 or the exhaust pipe 5 and the neutralization tank 2.

[0046] It should be noted that the aforementioned air guide pipe 4 and exhaust pipe 5 can be fixed by a bracket consisting of a column and a beam. In order to show the connection relationship between the neutralization tank 2 and the air guide pipe 4, as well as between the neutralization tank 2 and the exhaust pipe 5, the aforementioned bracket is not shown in the attached drawings.

[0047] The working principle of the energy-saving firing device for porous sintered bricks disclosed in this application is as follows:

[0048] The sintering furnace 1 can fire the brick blanks, while the gas duct 4 can introduce the waste gas generated during the firing of the brick blanks into the neutralization tank 2. The user can first add an alkaline neutralization solution for neutralizing the acid washing substances in the waste gas into the first inner cavity 211 and the second inner cavity 212, then control the rotary table 3 to rotate the first air inlet to a position close to the gas duct 4, then connect the gas duct 4 to the first air inlet, open the sealing valve of the first air inlet, close the sealing valve of the second air inlet, connect the exhaust pipe 5 to the second air outlet, and then... Open the sealing valve of the second outlet and close the sealing valve of the first outlet. Then connect the abutment flange 62 at the first inlet to the air guide flange 43 and the abutment flange 62 at the second outlet to the exhaust flange 53. Then open the solenoid valve 232 of the first inner cavity 211 and close the solenoid valve 232 of the second inner cavity 212 so that the exhaust gas first enters the first inner cavity 211 and is neutralized by acid and alkali for the first time, and then enters the second inner cavity 212 through the four-way pipe 231 to be neutralized by acid and alkali for the second time.

[0049] After the alkaline substances in the neutralization solution in the first inner cavity 211 are completely consumed, the user can first separate the connecting flange 62 at the first air inlet from the air guide flange 43, and separate the connecting flange 62 at the second air outlet from the exhaust connecting flange 53. Then, control the rotary table 3 to rotate the second air inlet to a position close to the air guide pipe 4. Then, replace the neutralization solution in the first inner cavity 211 by first opening the sealing valve of the first air inlet to discharge liquid, and then opening the sealing valve of the first air outlet to allow liquid to enter. Next, connect the air guide pipe 4 to the second air inlet, open the sealing valve of the second air inlet, close the sealing valve of the first air inlet, and connect the exhaust pipe 5 to the first air outlet. First, open the sealing valve of the first outlet and close the sealing valve of the second outlet. Then, connect the abutment flange 62 at the second inlet to the air guide flange 43 and the abutment flange 62 at the first outlet to the exhaust flange 53. Next, open the solenoid valve 232 of the second inner cavity 212 and close the solenoid valve 232 of the first inner cavity 211, so that the exhaust gas first enters the second inner cavity 212 and is neutralized by acid and alkali for the first time, and then enters the first inner cavity 211 through the air intake unit 23 and is neutralized by acid and alkali for the second time. This allows the neutralization solution in the two inner cavities to be fully utilized, so that the porous sintered brick energy-saving calcining device can save material resources and achieve energy saving and consumption reduction.

[0050] It should be noted that the above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An energy-saving firing device for porous sintered bricks, characterized in that: It includes a sintering furnace (1), a neutralization tank (2), a rotating table (3), a gas guide pipe (4) and an exhaust pipe (5), wherein the interior of the sintering furnace (1) is provided with a furnace chamber for firing brick blanks; The neutralization tank (2) includes a tank body (21), a partition (22), and an air intake unit (23). The partition (22) is located inside the tank body (21) and divides the interior of the tank body (21) into a first inner cavity (211) and a second inner cavity (212). The inner wall of the first inner cavity (211) is provided with a first air inlet and a first air outlet. The inner wall of the second inner cavity (212) is provided with a second air inlet and a second air outlet. The tank body (21) is located on the rotating platform (3) and between the exhaust pipe (5) and the air guide pipe (4). The air intake unit (23) is located on the partition (22) and can introduce the gas in the first inner cavity (211) and the second inner cavity (212) near the air guide pipe (4) into the other. One end of the gas guide pipe (4) is connected to the top of the furnace, and the other end of the gas guide pipe (4) leads to the interior of one of the first inner cavity (211) and the second inner cavity (212) near the gas guide pipe (4). When the gas guide pipe (4) is connected to the first air inlet, the exhaust pipe (5) is connected to the second air outlet. When the gas guide pipe (4) is connected to the second air inlet, the exhaust pipe (5) is connected to the first air outlet.

2. The energy-saving firing device for porous sintered bricks according to claim 1, characterized in that: The air intake unit (23) includes a four-way pipe (231) and two solenoid valves (232). The first inner cavity (211) and the second inner cavity (212) are each filled with a portion of the neutralization solution. The four-way pipe (231) includes two air inlets and two water inlets. The first inner cavity (211) and the second inner cavity (212) are each provided with one air inlet and one water inlet. Each air inlet is located at the top of the neutralization tank (2) away from the neutralization solution. Each water inlet is located at the bottom of the neutralization tank (2) and is submerged in the neutralization solution. Each solenoid valve (232) corresponds to one of the air inlets. Each solenoid valve (232) is located on the corresponding air inlet and can control the opening and closing of the air inlet.

3. The energy-saving firing device for porous sintered bricks according to claim 1, characterized in that: The gas guide pipe (4) is provided with a gas guide connector (41) and a gas guide elastic element (42). One end of the gas guide connector (41) is inserted into the end port of the gas guide pipe (4) away from the sintering furnace (1) and can block the port. The other end of the gas guide connector (41) is provided with a gas guide hole (411) leading to the gas guide pipe (4). The gas guide connector (41) is provided with a gas guide abutment protrusion. The inner wall of the gas guide pipe (4) is provided with a gas guide receiving groove along the direction from close to away from the neutralization tank (2). The gas guide abutment protrusion is inserted into the gas guide receiving groove and can slide along the gas guide receiving groove. The gas-guiding elastic element (42) is disposed between the gas-guiding abutment protrusion and the inner wall of the gas-guiding receiving groove and can apply a force close to the neutralization tank (2) to the gas-guiding abutment protrusion. Both the first air inlet and the second air inlet are equipped with a sealing valve (213). When the first air inlet is close to the air guide pipe (4), the air guide connector (41) can be inserted into the first air inlet and the first air inlet is connected to the air guide pipe (4) through the air guide hole (411). When the second air inlet is close to the air guide pipe (4), the air guide connector (41) can be inserted into the second air inlet and the second air inlet is connected to the air guide pipe (4) through the air guide hole (411).

4. The energy-saving firing device for porous sintered bricks according to claim 3, characterized in that: An inclined surface (412) is formed on one end face of the gas guide connector (41) near the neutralization tank (2). The opening of the gas guide hole (411) is located at the center of the inclined surface (412). The inclined surface (412) gradually tilts away from the neutralization tank (2) in the direction from its center to its edge.

5. The energy-saving firing device for porous sintered bricks according to claim 4, characterized in that: The exhaust pipe (5) is provided with an exhaust abutment (51) and an exhaust elastic element (52). One end of the exhaust abutment (51) is inserted into the end port of the exhaust pipe (5) near the neutralization tank (2) and can block the port. The other end of the exhaust abutment (51) is provided with an exhaust hole (511) leading to the exhaust pipe (5). The exhaust abutment (51) is provided with an exhaust abutment protrusion. An exhaust receiving groove is provided on the inner wall of the exhaust pipe (5) along the direction from near to far from the neutralization tank (2). The exhaust abutment protrusion is inserted into the exhaust receiving groove and can slide along the exhaust receiving groove. The exhaust elastic member (52) is disposed between the exhaust abutment protrusion and the inner wall of the exhaust receiving groove and is capable of applying a force close to the neutralization tank (2) to the exhaust abutment protrusion; Both the first and second air outlets are equipped with the sealing valve (213). When the first air outlet is close to the exhaust pipe (5), the exhaust connector (51) can be inserted into the first air outlet and the first air outlet is connected to the exhaust pipe (5) through the exhaust hole (511). When the second air outlet is close to the exhaust pipe (5), the exhaust connector (51) can be inserted into the second air outlet and the second air outlet is connected to the exhaust pipe (5) through the exhaust hole (511).

6. The energy-saving firing device for porous sintered bricks according to claim 5, characterized in that: An exhaust inclined surface (512) is formed on one end face of the exhaust connector (51) near the neutralization tank (2). The opening of the exhaust hole (511) is located at the center of the exhaust inclined surface (512). The exhaust inclined surface (512) gradually tilts away from the neutralization tank (2) in the direction from its center to its edge.

7. The energy-saving firing device for porous sintered bricks according to claim 6, characterized in that: It also includes a sealing assembly (6), which is provided at the first air inlet, the second air inlet, the first air outlet and the second air outlet. The sealing assembly (6) includes a telescopic tube (61) and a connecting flange (62). One end of the telescopic tube (61) is connected to the neutralization tank (2) and the other end of the telescopic tube (61) is connected to the connecting flange (62). The air guide pipe (4) is provided with an air guide connecting flange (43) on its body. The air guide connecting flange (43) can be connected to the abutment flange (62) and the telescopic pipe (61) can wrap around the connection between the first air inlet or the second air inlet and the air guide abutment (41). The exhaust pipe (5) is provided with an exhaust connection flange (53) on its body. The exhaust connection flange (53) can be connected to the abutment flange (62) and the telescopic pipe (61) can wrap around the connection between the first air outlet or the second air outlet and the exhaust abutment (51).

8. The energy-saving firing device for porous sintered bricks according to claim 7, characterized in that: A sealing gasket (7) is provided between the air guide connecting flange (43) and the abutting flange (62) and between the exhaust connecting flange (53) and the abutting flange (62).

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