Energy-saving and emission-reducing device for cement kiln

Abstract

The utility model belongs to the technical field of energy conservation of cement kilns, and relates to an energy conservation and emission reduction device of a cement kiln, which comprises a kiln body and a dust falling box, a one-way valve is mounted on the gas-guide tube; the top end of the kiln body is fixedly connected with an oxygen inlet pipe, and a spraying assembly is arranged at the top end in the dust falling box. The top end of the dust falling box is fixedly connected with an air outlet pipe; a filter plate is fixedly mounted in the dust falling box, and a cleaning assembly is arranged above the filter plate; a collecting assembly is slidably arranged on the filter plate, and an electric telescopic rod and a cleaning rod are arranged, so that the cleaning rod can clean dust filtered on the filter plate and collect the dust into a collecting box; by arranging the pressurizing spray head, when the shower head cools and dedusted the waste gas, the pressurizing spray head automatically sprays water to clean dust filtered on the filter plate and collect the dust into the trapezoidal box, and the situation that the filter plate is blocked and water backflow is affected is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of cement kiln energy-saving technology and relates to a cement kiln energy-saving and emission-reduction device. Background Technology

[0002] Cement kilns are primarily used to sinter cement raw materials into cement clinker and are the core equipment in cement production. Cement kilns can be classified into several types according to different classification standards. Based on the movement of the kiln shell, they are mainly divided into two categories: rotary kilns and vertical kilns.

[0003] A device for energy conservation, emission reduction, oxygenation, and combustion assistance in cement kilns, disclosed in Chinese patent CN217155017U, includes a kiln body. An exhaust gas pipe is located on the right side of the kiln body, and an oxygen inlet is located at the top of the kiln body. A treatment box is fixedly installed at the right end of the exhaust gas pipe, and a water storage tank is fixedly installed on the right side of the treatment box. A filter plate is fixedly installed inside the treatment box, and a water leakage plate is fixedly installed at the bottom of the filter plate. A water leakage funnel is fixedly connected to the lower end of the water leakage plate, and a water outlet pipe is fixedly connected to the lower end of the water outlet pipe. A throttling device is fixedly installed inside the water outlet pipe, and a limit plate is provided at the front end of the throttling device. Limit blocks are fixedly installed on both sides of the limit plate, and a compression spring is fixedly connected to the left side of the limit plate.

[0004] When the aforementioned existing device is in use, the water sprayed from the nozzle is filtered through the filter plate, and the filtered water falls into the water funnel through the drain plate. However, after a period of use, dust and impurities accumulate on the surface of the filter plate, which affects the water return. The device does not have a cleaning structure for the filter plate, making it inconvenient to clean the filter plate.

[0005] To address the aforementioned problems, this utility model proposes an energy-saving and emission-reduction device for cement kilns. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model proposes an energy-saving and emission-reduction device for cement kilns.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an energy-saving and emission-reduction device for cement kilns, comprising a kiln body and a dust settling box, the kiln body and the dust settling box being connected by an air guide pipe; a one-way valve is installed on the air guide pipe; an oxygen inlet pipe is fixedly connected to the top of the kiln body, and a spray assembly is provided at the top of the interior of the dust settling box; an air outlet pipe is fixedly connected to the top of the dust settling box; a filter plate is fixedly installed inside the dust settling box, and a cleaning assembly is provided above the filter plate; a collection assembly is slidably arranged on the filter plate.

[0008] Preferably, the spray assembly includes a shower head, which is fixedly mounted on the top of the inside of the dust collection box.

[0009] Preferably, a fixing plate is fixedly installed on the bottom side of the dust collection box, and a water pump is fixedly installed on the fixing plate. The water inlet of the water pump is connected to the inside of the dust collection box; a water guide pipe is fixedly connected to the water outlet of the water pump, and the other end of the water guide pipe is connected to the shower head.

[0010] Preferably, L-shaped filter plates are fixedly installed on both sides of the inner wall of the dust collection box, and the two sides of the filter plates are fixedly connected to the top of the two L-shaped filter plates respectively.

[0011] Preferably, the cleaning assembly includes an electric telescopic rod and a cleaning rod. Two electric telescopic rods are fixedly installed on the side wall of the dust settling box. The telescopic ends of the electric telescopic rods extend into the interior of the dust settling box. A cleaning rod is fixedly installed on the telescopic ends of the electric telescopic rods. The bottom surface of the cleaning rod is in contact with the upper surface of the filter plate.

[0012] Preferably, the collection assembly includes two collection boxes, which are slidably disposed inside the L-shaped filter plate. One end of the collection box slides through the interior of the dust collection box, and a filter hole is provided at the bottom of the collection box.

[0013] Preferably, the cleaning assembly includes a three-way pipe and a booster nozzle. The three-way pipe is fixedly installed on the water guide pipe, and the booster nozzle is fixedly installed on the inner wall of the dust settling box. The booster nozzle is located on one side above the filter plate, and one end of the three-way pipe is connected to the booster nozzle.

[0014] Preferably, a trapezoidal box is slidably disposed on the upper end face of the filter plate away from the booster nozzle, a filter hole is opened at the bottom of the trapezoidal box, and one end of the trapezoidal box slides through the interior of the dust settling box.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This cement kiln energy-saving and emission-reduction device is equipped with an electric telescopic rod and a cleaning rod. The cleaning rod can clean the dust filtered on the filter plate and collect it into the collection box to prevent the filter plate from clogging and affecting the water return.

[0017] 2. This cement kiln energy-saving and emission-reduction device, by setting up pressure spray nozzles, automatically sprays water to clean the dust filtered on the filter plate and collect it into the trapezoidal box when the exhaust gas is cooled and dusted by the spray nozzles, thus preventing the filter plate from being blocked and affecting the water return. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of this utility model;

[0019] Figure 2 This is a partial cross-sectional view of Embodiment 1 of the present invention;

[0020] Figure 3 This is a schematic diagram of the collection box structure in Embodiment 1 of this utility model;

[0021] Figure 4 This is a partial cross-sectional view of Embodiment 2 of the present invention;

[0022] Figure 5 This is a schematic diagram of the trapezoidal box structure in Embodiment 2 of this utility model.

[0023] In the diagram: 1. Kiln body; 2. Oxygen inlet pipe; 3. Air guide pipe; 4. One-way valve; 5. Dust settling box; 6. Filter plate; 7. Electric telescopic rod; 8. Cleaning rod; 9. L-shaped filter plate; 10. Collection box; 11. Fixing plate; 12. Water pump; 13. Water guide pipe; 14. Shower head; 15. Air outlet pipe; 16. T-pipe; 17. Booster nozzle; 18. Trapezoidal box. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: As Figures 1-3 As shown, the technical solution adopted by this utility model is as follows: A cement kiln energy-saving and emission-reduction device includes a kiln body 1 and a dust collection box 5, which are connected by an air guide pipe 3. A one-way valve 4 is installed on the air guide pipe 3. An oxygen inlet pipe 2 is fixedly connected to the top of the kiln body 1.

[0026] A spray assembly is installed at the top of the interior of the dust collection box 5.

[0027] The spray assembly includes a shower head 14, which is fixedly installed at the top of the inside of the dust collection box 5.

[0028] A fixing plate 11 is fixedly installed on the bottom side wall of the dust settling box 5. A water pump 12 is fixedly installed on the fixing plate 11. The water inlet of the water pump 12 is connected to the interior of the dust settling box 5. A water guide pipe 13 is fixedly connected to the water outlet of the water pump 12. The other end of the water guide pipe 13 is connected to the shower head 14.

[0029] An air outlet pipe 15 is fixedly connected to the top of the dust settling box 5. A filter plate 6 is fixedly installed inside the dust settling box 5.

[0030] Both sides of the inner wall of the dust collection box 5 are fixedly installed with L-shaped filter plates 9, and the two sides of the filter plate 6 are fixedly connected to the top of the two L-shaped filter plates 9 respectively.

[0031] A cleaning component is provided above the filter plate 6.

[0032] The cleaning assembly includes an electric telescopic rod 7 and a cleaning rod 8. Two electric telescopic rods 7 are fixedly installed on the side wall of the dust settling box 5. The telescopic ends of the electric telescopic rods 7 extend into the interior of the dust settling box 5. The two ends of the cleaning rod 8 are fixedly connected to the telescopic ends of the two electric telescopic rods 7 respectively. The bottom surface of the cleaning rod 8 is in contact with the upper surface of the filter plate 6.

[0033] A collection component is slidably mounted on the filter plate 6.

[0034] The collection assembly includes two collection boxes 10, which are slidably disposed inside the L-shaped filter plate 9. The upper end of the collection box 10 is flush with the lower end of the filter plate 6. One end of the collection box 10 slides through the interior of the dust settling box 5, and a filter hole is provided at the bottom of the collection box 10.

[0035] Working principle:

[0036] When the kiln 1 is in operation, combustion-supporting gas can be injected into the kiln 1 through the oxygen inlet pipe 2, which can improve combustion efficiency, reduce energy consumption, reduce harmful gas emissions, and improve the quality and output of cement production.

[0037] Meanwhile, when the kiln body 1 is working, it will generate waste gas. At this time, the waste gas enters the dust collection box 5 through the air guide pipe 3. The one-way valve 4 on the air guide pipe 3 can prevent the waste gas from flowing back into the kiln body 1 and affecting the cement being processed.

[0038] Start the water pump 12, which draws water from the bottom of the dust settling box 5 and sprays it out from the shower head 14 through the water pipe 13. The water sprayed out by the shower head 14 will cool and remove the exhaust gas in the dust settling box 5.

[0039] Dust in the exhaust gas falls onto the filter plate 6 along with the water sprayed from the shower head 14. The water flows back to the bottom of the dust collection box 5 through the filter plate 6, leaving the dust in the exhaust gas on the filter plate 6. At this time, the electric telescopic rod 7 is activated, and the electric telescopic rod 7 pushes the cleaning rod 8 back and forth to move. The cleaning rod 8 cleans the dust that has fallen onto the filter plate 6. When the cleaning rod 8 moves to the leftmost and rightmost positions, the dust will fall into the collection box 10, thus completing the cleaning of the filter plate 6.

[0040] The filter holes at the bottom of the collection box 10 prevent water from accumulating inside the collection box 10. Water flowing into the collection box 10 flows into the bottom of the dust settling box 5 through the filter holes at the bottom and the L-shaped filter plate 9.

[0041] When the collection box 10 needs to be cleaned, it can be pulled out to clean the dust inside. The exhaust gas after cooling and dust removal can be discharged through the exhaust pipe 15 to enter the next process.

[0042] Example 2: As Figures 4-5As shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, the filter plate 6 is inclinedly arranged in the dust settling box 5. Both ends of the filter plate 6 are fixedly connected to the inner wall of the dust settling box 5, and the side of the filter plate 6 facing away from the water pump 12 is arranged in a trapezoidal structure.

[0043] The cleaning assembly includes a three-way pipe 16 and a booster nozzle 17. The three-way pipe 16 is fixedly installed on the water guide pipe 13, and the booster nozzle 17 is fixedly installed on the inner wall of the dust settling box 5. The booster nozzle 17 is located on one side above the filter plate 6, and one end of the three-way pipe 16 is connected to the booster nozzle 17.

[0044] The collection component includes a trapezoidal box 18. The trapezoidal box 18 is slidably disposed inside the trapezoidal structure of the filter plate 6. The bottom end of the trapezoidal box 18 is provided with a filter hole, and one end of the trapezoidal box 18 slides through the interior of the dust collection box 5.

[0045] Working principle:

[0046] In this embodiment, the difference from Scheme 1 is that when cooling and removing dust from the exhaust gas entering the dust settling box 5, the water pump 12 is started. The water pump 12 draws water from the bottom of the dust settling box 5 into the water guide pipe 13. The water entering the water guide pipe 13 enters through the three-way pipe 16, part of which is sprayed out through the booster nozzle 17, and the other part is sprayed out through the shower head 14.

[0047] Water sprayed from the shower head 14 falls onto the filter plate 6 and flows back to the bottom of the dust settling box 5. Dust in the exhaust gas remains on the filter plate 6. At this time, water sprayed from the pressurized nozzle 17 sprays onto the filter plate 6, flushing the dust onto the filter plate 6 into the trapezoidal box 18, thus cleaning the filter plate 6. The filter holes at the bottom of the trapezoidal box 18 allow water flowing into the trapezoidal box 18 to flow into the bottom of the dust settling box 5, preventing water from accumulating inside the trapezoidal box 18. To clean the trapezoidal box 18, simply pull it out.

[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cement kiln energy saving and emission reduction device, comprising a kiln body (1) and a dust falling box (5), characterized in that, The kiln body (1) is communicated with the dust falling box (5) through the air guide pipe (3); the air guide pipe (3) is provided with a one-way valve (4); the top end of the kiln body (1) is fixedly connected with an oxygen inlet pipe (2); the inner top end of the dust falling box (5) is provided with a spraying assembly; the top end of the dust falling box (5) is fixedly connected with an air outlet pipe (15); the inner part of the dust falling box (5) is fixedly provided with a filter plate (6); the upper part of the filter plate (6) is provided with a cleaning assembly; the filter plate (6) is slidably provided with a collecting assembly.

2. The device for energy saving and emission reduction of a cement kiln according to claim 1, characterized in that: The spraying assembly comprises a shower head (14) which is fixedly arranged at the inner top end of the dust falling box (5).

3. The device for energy saving and emission reduction of a cement kiln according to claim 2, characterized in that: The bottom side of the sidewall of the dust falling box (5) is fixedly provided with a fixed plate (11), the fixed plate (11) is fixedly provided with a water pump (12), the water inlet end of the water pump (12) is communicated with the inner part of the dust falling box (5); the water outlet end of the water pump (12) is fixedly connected with a water guide pipe (13), the other end of the water guide pipe (13) is communicated with the shower head (14).

4. The device for energy saving and emission reduction of a cement kiln according to claim 1, characterized in that: The inner walls of the dust falling box (5) are fixedly provided with two L-shaped filter plates (9) on both sides, the two sides of the filter plate (6) are fixedly connected with the top ends of the two L-shaped filter plates (9) respectively.

5. The device for energy saving and emission reduction of a cement kiln according to claim 1, characterized in that: The cleaning assembly comprises an electric telescopic rod (7) and a cleaning rod (8), the sidewalls of the dust falling box (5) are fixedly provided with the electric telescopic rods (7) on both sides, the cleaning rod (8) is slidably arranged on the upper end face of the filter plate (6), the telescopic ends of the electric telescopic rods (7) are fixedly connected with the cleaning rod (8).

6. The device for energy saving and emission reduction of a cement kiln according to claim 1, characterized in that: The collecting assembly comprises two collecting boxes (10), the collecting boxes (10) are slidably arranged in the inner parts of the L-shaped filter plates (9), one end of the collecting box (10) slidably penetrates out of the inner part of the dust falling box (5), the bottom end of the collecting box (10) is provided with a filter hole.

7. The device for energy saving and emission reduction of a cement kiln according to claim 1, characterized in that: The cleaning assembly comprises a three-way pipe (16) and a booster nozzle (17), the three-way pipe (16) is fixedly arranged on the water guide pipe (13), the booster nozzle (17) is fixedly arranged on the inner wall of the dust falling box (5), the booster nozzle (17) is arranged on the side above the filter plate (6), one end of the three-way pipe (16) is communicated with the booster nozzle (17).

8. The device for energy saving and emission reduction of a cement kiln according to claim 1, characterized in that: The collecting assembly comprises a trapezoidal box (18), the trapezoidal box (18) is slidably arranged on the side of the upper end face of the filter plate (6) away from the booster nozzle (17), the bottom end of the trapezoidal box (18) is provided with a filter hole, one end of the trapezoidal box (18) slidably penetrates out of the inner part of the dust falling box (5).

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