A tunnel kiln

Abstract

The application relates to a tunnel kiln and relates to the technical field of sanitary ceramics, which comprises a tunnel kiln body and a blockage prevention mechanism. The application can introduce water into the water tank through the external pipeline and the water injection pipe when the tunnel kiln body works to generate flue gas and the flue gas is discharged through the flue gas discharge pipe, then the water in the water tank is sucked into the shunt pipe under the action of the water pump, and is sprayed through the spray head, the flue gas about to pass through the filter screen is sprayed and removed, the purpose of removing part of impurities and pollutants in the flue gas is achieved, the blockage of the filter screen is reduced, the purification effect of the flue gas is improved, then the filter screen in the flue gas discharge pipe can filter and purify the flue gas again, and finer harmful substances in the flue gas are intercepted, and if impurities are attached to the filter screen, the surface of the filter screen can be sprayed, and the sewage generated after the spraying can be collected through the drain pipe and discharged through the conveying pipe.

Description

Technical Field

[0001] This application relates to the field of sanitary ceramics technology, and in particular to a tunnel kiln. Background Technology

[0002] Tunnel kilns are continuous firing thermal equipment that play an important role in the production of sanitary ceramics and other products. They have many advantages such as high efficiency, energy saving, and stable product quality. Through reasonable structural design, they can realize the orderly movement and uniform heating of ceramic products in the kiln, thereby ensuring the quality and consistency of product firing. They have been widely used in the field of sanitary ceramics technology.

[0003] Regarding the aforementioned technologies, existing tunnel kilns inevitably generate a large amount of flue gas during the firing of ceramic products. If this flue gas cannot be discharged from the kiln in a timely manner, it will not only affect the temperature uniformity and firing environment inside the kiln, but may also have an adverse effect on the quality of ceramic products. Therefore, during the flue gas discharge process, filters are usually installed to filter out impurities. However, as the usage time increases, too many impurities will gradually adhere to the surface of the filter, which will block the pores of the filter. This will not only reduce the filtration efficiency of the filter, but also affect the normal discharge of flue gas, leading to abnormal pressure inside the kiln, and may even cause safety accidents. Utility Model Content

[0004] The purpose of this application is to provide a tunnel kiln that has the advantage of preventing filter screen clogging and solves the problems mentioned in the background art.

[0005] The tunnel kiln provided in this application adopts the following technical solution: it includes a tunnel kiln body and an anti-blocking mechanism. The anti-blocking mechanism includes several vertical plates fixedly connected to the top surface of the tunnel kiln body. A water tank is fixedly connected to the top of the several vertical plates. A water injection pipe is fixedly connected to the top of the water tank. Several water pumps are fixedly connected to the bottom of the water tank. A diversion pipe is fixedly connected to the bottom of the water pump. A nozzle is fixedly installed at one end of the diversion pipe. Several exhaust pipes are fixedly connected to the top surface of the tunnel kiln body, and several filter screens are fixedly connected inside the exhaust pipes. The diversion pipe is located inside the exhaust pipe, and the nozzle is located in front of the flue gas passing through the filter screen. The bottom of the exhaust pipe is provided with a drain outlet, and a drain pipe is fixedly connected inside the drain outlet. Several drain pipes are fixedly connected to the bottom ends of the drain pipes. A solenoid valve is fixedly installed on the surface of the drain pipe. The drain outlet is located behind the flue gas after passing through the filter screen. By adopting the above technical solution and setting up an anti-clogging mechanism, when the tunnel kiln body generates flue gas during operation and discharges it through the exhaust pipe, water is first introduced into the water tank through an external pipe and a water injection pipe. Then, the water in the water tank is pumped into the diversion pipe by the water pump and sprayed out through the nozzles. Subsequently, the flue gas that is about to pass through the filter screen is sprayed to remove some impurities and pollutants in the flue gas, thereby reducing the clogging of the filter screen and improving the purification effect of the flue gas. The filter screen in the exhaust pipe can then filter and purify the flue gas a second time, intercepting even finer particles of harmful substances in the flue gas. If impurities are attached to the filter screen, the filter screen can be sprayed on its surface. The wastewater generated after spraying can be collected through the drain outlet and the drain pipe and discharged into the conveying pipe. During the discharge, the solenoid valve can control the flow rate of the wastewater discharge, which facilitates centralized treatment of wastewater and avoids indiscriminate discharge of wastewater that will cause environmental pollution. This improves the efficiency and environmental friendliness of the tunnel kiln body in treating flue gas.

[0006] Preferably, a track is provided at the bottom of the tunnel kiln body, and a kiln car is provided at the top of the track; By adopting the above technical solution and setting up tracks and kiln cars, it is convenient to transport and move materials within the tunnel kiln body, enabling materials to be processed within the tunnel kiln body according to a predetermined path, thereby improving the working efficiency and operational convenience of the tunnel kiln body.

[0007] Preferably, a smoke exhaust box is fixedly connected to the side of the tunnel kiln body, a number of air pumps are fixedly installed on the top of the smoke exhaust box, the smoke exhaust pipe is fixedly connected to the top of the air pumps, and an activated carbon plate is provided inside the smoke exhaust box. By adopting the above technical solution, and by setting up a flue gas box and an air pump, the flue gas generated inside the tunnel kiln can be quickly extracted and discharged through the flue gas box. During the discharge process, the activated carbon plate can adsorb the odor and some harmful substances in the flue gas, thereby purifying the flue gas and reducing environmental pollution.

[0008] Preferably, a plurality of fixing blocks are attached to the side of the smoke exhaust box, and the fixing blocks are threadedly connected to the inside of the smoke exhaust box with studs, and sealing plates are fixedly connected to the sides of the plurality of fixing blocks; By adopting the above technical solution and by setting a fixing block, studs and sealing plate, the inside of the exhaust box can be sealed when no flue gas is being discharged.

[0009] Preferably, a first fixing ring is fixedly connected to the surface of the water injection pipe, and a plurality of first mounting screws are threadedly connected to the bottom of the first fixing ring. By adopting the above technical solution and by setting the first fixing ring and the first mounting screw, it is easy to install and connect the water injection pipe to the external pipe.

[0010] Preferably, a second fixing ring is fixedly connected to the surface of the conveying pipe, and a plurality of second mounting screws are threadedly connected to the top of the second fixing ring; By adopting the above technical solution, and by setting a second fixing ring and a second mounting screw, it is easy to install and connect the conveying pipe to the external sewage pipe.

[0011] Preferably, a sealing ring is fixedly connected to one end of both the water injection pipe and the delivery pipe; By adopting the above technical solution and setting a sealing ring, the sealing performance at the connection point can be enhanced when the water injection pipe is connected to the delivery pipe and external pipes, thus preventing leakage.

[0012] Preferably, the surface of the exhaust pipe is coated with an epoxy coating; By adopting the above technical solution and applying epoxy coating, the corrosion resistance of the exhaust pipe can be enhanced, reducing maintenance and replacement costs caused by corrosion.

[0013] In summary, this application includes at least one of the following beneficial technical effects: This type of tunnel kiln, by incorporating an anti-clogging mechanism, allows water to be introduced into a water tank via an external pipe through a water injection pipe when the kiln body generates flue gas during operation and discharges it through the exhaust pipe. The water in the tank is then pumped into a distribution pipe and sprayed out through nozzles to further clean the flue gas before it passes through the filter screen. This process removes some impurities and pollutants from the flue gas, reducing filter screen clogging and improving the purification effect. The filter screen in the exhaust pipe then performs a secondary filtration and purification of the flue gas, intercepting even finer particles of harmful substances. If impurities remain on the filter screen, it can be sprayed with water. Wastewater generated after spraying is collected through a drain pipe and discharged into a conveying pipe. During discharge, a solenoid valve controls the flow rate of the wastewater, facilitating centralized wastewater treatment and preventing indiscriminate discharge that could pollute the environment. This improves the efficiency and environmental friendliness of the tunnel kiln's flue gas treatment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall front view structure of this application; Figure 2 This is a bottom view of the anti-blocking mechanism in this application; Figure 3 for Figure 1 A schematic diagram of the overhead cross-sectional structure of the central exhaust pipe and drainage pipe; Figure 4 for Figure 3 Schematic diagram of the side cross-sectional structure of the central exhaust pipe and drainage pipe; Figure 5 for Figure 1A schematic diagram of the central exhaust smoke box from below; Figure 6 for Figure 1 A schematic diagram of the front view of the central water injection pipe; Figure 7 for Figure 1 Enlarged structural diagram at point A in the middle.

[0015] In the picture: 1. Tunnel kiln body; 2. Track; 3. Kiln car; 4. Anti-blocking mechanism; 401. Vertical plate; 402. Water tank; 403. Water injection pipe; 404. Drainage pipe; 405. Solenoid valve; 406. Conveying pipe; 407. Water pump; 408. Diverter pipe; 409. Nozzle; 410. Filter screen; 411. Drain outlet; 5. Smoke exhaust box; 6. Air pump; 7. Smoke exhaust pipe; 8. Sealing plate; 9. Activated carbon plate; 10. First fixing ring; 11. First mounting screw; 12. Sealing ring; 13. Second fixing ring; 14. Second mounting screw; 15. Fixing block; 16. Stud. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail below.

[0017] Example 1: A tunnel kiln, referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 The system includes a tunnel kiln body 1 and an anti-blocking mechanism 4. The anti-blocking mechanism 4 includes several vertical plates 401 fixedly connected to the top surface of the tunnel kiln body 1. A water tank 402 is fixedly connected to the top of the several vertical plates 401. A water injection pipe 403 is fixedly connected to the top of the water tank 402. Several water pumps 407 are fixedly connected to the bottom of the water tank 402. A diversion pipe 408 is fixedly connected to the bottom end of the water pump 407. A nozzle 409 is fixedly installed at one end of the diversion pipe 408. A number of exhaust pipes 7 are fixedly connected to the top surface of the tunnel kiln body 1. A number of filter screens 410 are fixedly connected inside the exhaust pipes 7. A diversion pipe 408 is located inside the exhaust pipes 7. A nozzle 409 is located in front of the flue gas passing through the filter screens 410. A drain outlet 411 is provided at the bottom of the flue gas exhaust pipe 7. A drain pipe 404 is fixedly connected inside the drain outlet 411. A conveying pipe 406 is fixedly connected to the bottom end of several drain pipes 404. A solenoid valve 405 is fixedly installed on the surface of the drain pipe 404. The drain outlet 411 is located behind the flue gas filter screen 410. By setting an anti-clogging mechanism 4, when the tunnel kiln body 1 generates flue gas and discharges it through the flue gas exhaust pipe 7, water is first introduced into the water tank 402 through the external pipe and the water injection pipe 403. Then, the water in the water tank 402 is drawn into the diversion pipe 408 by the water pump 407, and then sprayed out through the nozzle 409. Subsequently, the flue gas that is about to pass through the filter screen 410 is sprayed to remove pollutants, thereby achieving the goal of reducing the smoke pollution. The purpose of removing some impurities and pollutants from the gas is to reduce clogging of the filter screen 410 and improve the purification effect of the flue gas. Subsequently, the filter screen 410 in the exhaust pipe 7 can filter and purify the flue gas a second time, intercepting even finer particulate harmful substances in the flue gas. If impurities are attached to the filter screen 410 later, the filter screen 410 can be sprayed. The wastewater generated after spraying can be collected through the drain outlet 411 and the drain pipe 404 to the conveying pipe 406 for discharge. During the discharge, the solenoid valve 405 can control the flow rate of the wastewater discharge, which facilitates centralized treatment of wastewater and avoids indiscriminate discharge of wastewater that will cause pollution to the environment. This improves the efficiency and environmental protection of the tunnel kiln body 1 in treating flue gas.

[0018] Please see Figure 1 and Figure 5 The tunnel kiln body 1 has a track 2 at its bottom and a kiln car 3 at its top. The track 2 and kiln car 3 facilitate the transportation and movement of materials within the tunnel kiln body 1, allowing the materials to be processed along a predetermined path. This improves the working efficiency and ease of operation of the tunnel kiln body 1. A smoke exhaust box 5 is fixedly connected to the side of the tunnel kiln body 1, and several air pumps 6 are fixedly installed on the top of the smoke exhaust box 5. The smoke exhaust pipe 7 is fixedly connected to the top of the air pumps 6. Activated carbon plates 9 are installed inside the smoke exhaust box 5. By setting up the smoke exhaust box 5 and the air pumps 6, the flue gas generated inside the tunnel kiln body 1 can be quickly extracted and discharged through the smoke exhaust box 5. During the discharge, the activated carbon plates 9 can adsorb odors and some harmful substances in the flue gas, thus purifying the flue gas and reducing environmental pollution.

[0019] Please see Figure 6 and Figure 7The side of the smoke exhaust box 5 is fitted with several fixing blocks 15. The fixing blocks 15 are threadedly connected to the inside of the smoke exhaust box 5 with studs 16. The sides of the fixing blocks 15 are fixedly connected with sealing plates 8. By setting the fixing blocks 15, studs 16 and sealing plates 8, the inside of the smoke exhaust box 5 can be sealed when no smoke is being exhausted. The surface of the water injection pipe 403 is fixedly connected with a first fixing ring 10. The bottom of the first fixing ring 10 is threadedly connected with several first mounting screws 11. By setting the first fixing ring 10 and the first mounting screws 11, it is easy to install and connect the water injection pipe 403 to the external pipe.

[0020] Please see Figure 6 and Figure 7 A second fixing ring 13 is fixedly connected to the surface of the conveying pipe 406. Several second mounting screws 14 are threadedly connected to the top of the second fixing ring 13. By setting the second fixing ring 13 and the second mounting screws 14, it is easy to install and connect the conveying pipe 406 to the external sewage pipe. A sealing ring 12 is fixedly connected to one end of the water injection pipe 403 and the conveying pipe 406. By setting the sealing ring 12, the sealing performance of the connection can be enhanced when the water injection pipe 403 is connected to the conveying pipe 406 and the external pipe, and leakage can be prevented. The surface of the exhaust pipe 7 is coated with epoxy coating. By setting the epoxy coating, the corrosion resistance of the exhaust pipe 7 can be enhanced, and the maintenance and replacement costs caused by corrosion can be reduced.

[0021] The implementation principle of this application embodiment is as follows: First, the material to be processed is placed on the kiln car 3, and then the kiln car 3 moves along the track 2 at the bottom of the tunnel kiln body 1, thereby transporting the material into the tunnel kiln body 1 for processing. Then, since the water injection pipe 403 is connected to the external pipe through the first fixing ring 10 and the first mounting screw 11, water is introduced into the water tank 402 through the external pipe via the water injection pipe 403. During the introduction, the sealing ring 12 enhances the sealing of the connection to prevent water leakage. Then, the flue gas generated by the tunnel kiln body 1 during the processing is quickly drawn into the exhaust pipe 7 by the air pump 6. At this time, the water in the water tank 402 is drawn into the diversion pipe 408 by the water pump 407, and then sprayed out through the nozzle 409 located inside the exhaust pipe 7 and in front of the filter screen 410, thereby spraying and removing some impurities and pollutants from the flue gas that is about to pass through the filter screen 410, reducing the clogging of the filter screen 410. Subsequently, the sprayed flue gas continues to pass through the filter screen 410 in the exhaust pipe 7. The filter screen 410 then intercepts even finer particulate harmful substances in the flue gas a second time. After being filtered by the filter screen 410, the flue gas enters the activated carbon plate 9 in the exhaust box 5 and adsorbs odors and some harmful substances in the flue gas through the activated carbon plate 9. Finally, the purified gas is discharged through the exhaust box 5. The wastewater generated by subsequent spraying is collected at the drain outlet 411 at the bottom of the exhaust pipe 7. Then, the solenoid valve 405 on the drain pipe 404 is opened, and the wastewater is collected through the drain pipe 404 to the conveying pipe 406. Since the conveying pipe 406 is connected to the external sewage pipe through the second fixing ring 13 and the second mounting screw 14, and the sealing ring 12 ensures the seal at the connection, the wastewater is discharged to the external sewage storage area through the external sewage pipe. Finally, if there are some impurities attached to the filter screen 410, they can be cleaned through the nozzle 409. When there is no smoke exhaust, the sealing plate 8 is fixed to the side of the smoke exhaust box 5 by the fixing block 15 and the stud 16, and then the inside of the smoke exhaust box 5 can be sealed.

Claims

1. A tunnel kiln, comprising a tunnel kiln body (1) and an anti-blocking mechanism (4), characterized in that: The anti-blocking mechanism (4) includes several vertical plates (401) fixedly connected to the top surface of the tunnel kiln body (1). A water tank (402) is fixedly connected to the top of the several vertical plates (401). A water injection pipe (403) is fixedly connected to the top of the water tank (402). Several water pumps (407) are fixedly connected to the bottom of the water tank (402). A diversion pipe (408) is fixedly connected to the bottom end of the water pump (407). A nozzle (409) is fixedly installed at one end of the diversion pipe (408). The top surface of the tunnel kiln body (1) is fixedly connected with several exhaust pipes (7), and several filter screens (410) are fixedly connected inside the exhaust pipes (7). The diversion pipe (408) is located inside the exhaust pipes (7), and the nozzle (409) is located in front of the flue gas passing through the filter screens (410). The bottom of the exhaust pipe (7) is provided with a drain outlet (411), and a drain pipe (404) is fixedly connected inside the drain outlet (411). A conveying pipe (406) is fixedly connected to the bottom end of several drain pipes (404). A solenoid valve (405) is fixedly installed on the surface of the drain pipe (404). The drain outlet (411) is located behind the flue gas after passing through the filter screen (410).

2. A tunnel kiln according to claim 1, characterized in that: The tunnel kiln body (1) has a track (2) at its inner bottom and a kiln car (3) at the top of the track (2).

3. A tunnel kiln according to claim 1, characterized in that: The side of the tunnel kiln body (1) is fixedly connected to a smoke exhaust box (5), and a number of air pumps (6) are fixedly installed on the top of the smoke exhaust box (5). The smoke exhaust pipe (7) is fixedly connected to the top of the air pumps (6), and an activated carbon plate (9) is provided inside the smoke exhaust box (5).

4. A tunnel kiln according to claim 3, characterized in that: The side of the smoke exhaust box (5) is connected to several fixing blocks (15), and the fixing blocks (15) are threadedly connected to the inside of the smoke exhaust box (5) by studs (16). The side of the fixing blocks (15) is fixedly connected to sealing plates (8).

5. A tunnel kiln according to claim 1, characterized in that: The surface of the water injection pipe (403) is fixedly connected to a first fixing ring (10), and the bottom of the first fixing ring (10) is threadedly connected to a plurality of first mounting screws (11).

6. A tunnel kiln according to claim 1, characterized in that: The surface of the conveying pipe (406) is fixedly connected to a second fixing ring (13), and the top of the second fixing ring (13) is threadedly connected to a number of second mounting screws (14).

7. A tunnel kiln according to claim 1, characterized in that: A sealing ring (12) is fixedly connected to one end of both the water injection pipe (403) and the delivery pipe (406).

8. A tunnel kiln according to claim 1, characterized in that: The surface of the exhaust pipe (7) is coated with epoxy paint.

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