Coke oven denitration integrated large-flow low-noise fan

Abstract

The utility model belongs to the field of coke oven denitration smoke exhaust fans, particularly relates to a coke oven denitration integrated large-flow low-noise fan, and provides the following scheme aiming at the existing problems: the coke oven denitration integrated large-flow low-noise fan comprises a coke oven main body, a fan, a noise reduction mechanism and a denitration mechanism, one end of a smoke exhaust pipe on the coke oven main body is connected with a fan in a sealing manner, the exhaust end of the fan is provided with a noise reduction mechanism, and the denitration mechanism is connected with the noise reduction mechanism; the noise reduction mechanism comprises an air inlet pipe, a first conical pipe, a round pipe, a second conical pipe, an air outlet pipe, a filter screen, a honeycomb noise reduction plate, a rotating shaft and fan blades, one end of the fan is connected with the air inlet pipe in a sealed mode, one end of the air inlet pipe is connected with the first conical pipe in a sealed mode, and one end of the first conical pipe is connected with the round pipe in a sealed mode. Through cooperation of all the components, the noise reduction effect can be achieved, the effect of avoiding damage to the components can be achieved, and the automatic cleaning effect can be achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of coke oven denitrification exhaust fans, and in particular to a large-flow, low-noise integrated coke oven denitrification fan. Background Technology

[0002] The internal fan of the desulfurization tower has the function of blowing off impurities such as sulfides in the wastewater. The fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It has a wide range of applications. The fan will produce a lot of noise when it is working, so noise reduction devices are needed to reduce the noise emitted by the fan.

[0003] However, the noise reduction components for desulfurization and denitrification fans used in coke ovens on the market are not only complex in structure, but also have limited functions. In the existing desulfurization and denitrification fan technology for coke ovens, the motor inside the air supply channel vibrates during operation, which causes noise. At the same time, it does not have the function of slowing down the airflow speed, which leads to the internal components of the noise reduction components being directly impacted by the airflow, resulting in a high damage rate.

[0004] Therefore, we propose a high-flow-rate, low-noise integrated denitrification fan for coke ovens to solve the problems in the background technology. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a high-flow-rate, low-noise integrated denitrification fan for coke ovens.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-flow-rate, low-noise integrated denitrification fan for coke ovens includes a coke oven body, a fan, a noise reduction mechanism, and a denitrification mechanism.

[0008] One end of the exhaust pipe on the main body of the coke oven is sealed to a fan, and the exhaust end of the fan is equipped with a noise reduction mechanism. The denitrification mechanism is connected to the noise reduction mechanism.

[0009] The noise reduction mechanism includes an air inlet pipe, a first conical pipe, a round pipe, a second conical pipe, an air outlet pipe, a filter screen, honeycomb sound-absorbing plates, a rotating shaft, and fan blades. One end of the fan is sealed to the air inlet pipe, one end of the air inlet pipe is sealed to the first conical pipe, and one end of the first conical pipe is sealed to the round pipe. Three honeycomb sound-absorbing plates are fixedly installed inside the round pipe. Through the coordinated design between the fan and the noise reduction mechanism, not only can noise reduction be achieved, but damage to components can also be avoided, and automatic cleaning can be achieved, greatly improving practicality.

[0010] Specifically, a filter screen is fixedly installed inside the circular tube. The filter screen is located between the air intake pipe and one of the three honeycomb sound-absorbing plates. Through the function of the filter screen, impurities in the exhaust gas can be filtered, thereby intercepting impurities in the airflow and reducing the noise generated by the collision of impurities with the noise reduction mechanism, thus further improving the noise reduction effect.

[0011] Specifically, each of the three honeycomb silencing plates has multiple conical through holes, each corresponding to the air inlet pipe. The conical through holes on the three honeycomb silencing plates are arranged in an alternating pattern. By setting up the three honeycomb silencing plates, a single airflow can be divided into multiple airflows, further reducing the impact force of the airflow, further improving the silencing effect of the noise reduction mechanism, and further avoiding damage to the components. At the same time, the multiple conical through holes can ensure that the overall airflow velocity is not too low, thus avoiding affecting the airflow's ability to provide the denitrification mechanism with a stripping effect.

[0012] Specifically, one end of the round tube is sealed and connected to a second conical tube, and one end of the second conical tube is sealed and connected to an air outlet pipe. Through the action of the second conical tube, the airflow is compressed, further increasing the airflow speed and improving the exhaust airflow velocity, thereby further avoiding affecting the airflow's ability to provide the denitrification mechanism with a stripping effect.

[0013] Specifically, the filter screen and the three honeycomb sound-absorbing plates are rotatably connected to the same shaft. A fan blade is fixedly installed at one end of the shaft, corresponding to the second conical tube. Two cleaning plates are fixedly installed at the other end of the shaft, each contacting and connected to the filter screen and located on either side of it. A second cleaning plate is fixedly installed on the shaft, contacting and connected to one of the three honeycomb sound-absorbing plates. The compressed airflow acts on the fan blade, causing it to drive the shaft to rotate on the filter screen and the three honeycomb sound-absorbing plates. Simultaneously, the shaft drives the two cleaning plates to rotate synchronously, thus cleaning both sides of the filter screen, preventing debris from clogging it. Furthermore, the cleaning plates clean one side of the corresponding honeycomb sound-absorbing plate, further preventing debris passing through the filter screen from clogging it.

[0014] Specifically, the bottom of the circular tube has two through holes, and a collection box is sealed and installed in the two through holes. The two through holes correspond to the filter screen and the cleaning plate, respectively. The collection box can collect the debris that has been cleaned.

[0015] Specifically, the air inlet of the denitrification mechanism is sealed to one end of the air outlet pipe, and the exhaust gas is transported to the denitrification mechanism through the air outlet pipe.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model discloses a high-flow-rate, low-noise fan integrated with coke oven denitrification. During the process of transporting exhaust gas into the noise reduction mechanism, the airflow generated by the fan enters the noise reduction mechanism through the inlet pipe. Simultaneously, the conical tube increases the internal space of the noise reduction mechanism, thereby reducing the airflow speed and preventing damage to components from excessively fast airflow. It also prevents high-speed airflow from creating a direct impact and producing a harsh noise, thus achieving noise reduction. Furthermore, the filter screen filters impurities in the exhaust gas, intercepting them and reducing noise generated by collisions between impurities and the noise reduction mechanism, further improving the noise reduction effect.

[0018] This utility model discloses a high-flow-rate, low-noise fan for integrated denitrification of coke ovens. The compressed airflow acts on the fan blades, causing them to drive a rotating shaft to rotate on the filter screen and three honeycomb sound-absorbing plates. Simultaneously, the rotating shaft drives two cleaning plates (one and two) to rotate synchronously. This allows the two cleaning plates to clean both sides of the filter screen, preventing debris from clogging it. Furthermore, the cleaning plates clean one side of the corresponding honeycomb sound-absorbing plate, thus preventing debris passing through the filter screen from clogging the honeycomb sound-absorbing plate. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary. The structures, proportions, sizes, etc., shown in this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance, and any modification of the structure, change of the proportional relationship, or adjustment of the size is not permitted.

[0020] Figure 1 This is a three-dimensional structural diagram of a high-flow-rate, low-noise fan for integrated denitrification of coke ovens proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the noise reduction mechanism of a high-flow-rate, low-noise fan for integrated denitrification of coke ovens proposed in this utility model.

[0022] Figure 3 This is a structural diagram of the filter screen, honeycomb sound-absorbing plate, rotating shaft, fan blades, cleaning plate one, and cleaning plate two;

[0023] Figure 4 This is a structural diagram of the honeycomb sound-absorbing plate, the rotating shaft, and the tapered through hole.

[0024] In the diagram: 1. Main body of coke oven; 2. Fan; 3. Noise reduction mechanism; 31. Inlet pipe; 32. Conical pipe one; 33. Round pipe; 34. Conical pipe two; 35. Outlet pipe; 36. Filter screen; 37. Honeycomb sound-absorbing plate; 38. Rotating shaft; 39. Fan blade; 4. Denitrification mechanism; 5. Cleaning plate one; 6. Cleaning plate two; 7. Collection box; 8. Conical through hole. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. 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.

[0026] Reference Figure 1-4 A coke oven denitrification integrated high-flow-rate low-noise blower includes a coke oven body 1, a blower 2, a noise reduction mechanism 3, and a denitrification mechanism 4;

[0027] One end of the exhaust pipe on the main body of the coke oven 1 is sealed and connected to a fan 2. The exhaust end of the fan 2 is equipped with a noise reduction mechanism 3, and the denitrification mechanism 4 is connected to the noise reduction mechanism 3.

[0028] The noise reduction mechanism includes an air inlet pipe 31, a first conical pipe 32, a round pipe 33, a second conical pipe 34, an air outlet pipe 35, a filter screen 36, a honeycomb sound-absorbing plate 37, a rotating shaft 38, and a fan blade 39. One end of the fan 2 is sealed to the air inlet pipe 31, one end of the air inlet pipe 31 is sealed to the first conical pipe 32, and one end of the first conical pipe 32 is sealed to the round pipe 33. Three honeycomb sound-absorbing plates 37 are fixedly installed inside the round pipe 33. Through the coordinated design between the fan 2 and the noise reduction mechanism 3, not only can the noise reduction effect be achieved, but also the effect of avoiding damage to the components can be avoided, and the effect of automatic cleaning can be achieved, which greatly improves the practicality.

[0029] In this method, a filter screen 36 is fixedly installed inside the circular tube 33. The filter screen 36 is located between the air intake pipe 31 and one of the three honeycomb sound-absorbing plates 37. Through the function of the filter screen 36, the impurities in the exhaust gas can be filtered, thereby intercepting the impurities in the airflow and reducing the noise generated by the collision between the impurities and the noise reduction mechanism 3, thus further improving the noise reduction effect.

[0030] In this method, each of the three honeycomb silencing plates 37 has multiple conical through holes 8, which correspond to the air inlet pipe 31. The multiple conical through holes 8 on the three honeycomb silencing plates 37 are arranged in an alternating manner. By setting the three honeycomb silencing plates 37, a single airflow can be divided into multiple airflows, further reducing the impact force of the airflow, further improving the silencing effect of the noise reduction mechanism 3, and further avoiding damage to the components. At the same time, through the function of the multiple conical through holes 8, it can be ensured that the overall airflow velocity is not too low, so as to avoid affecting the airflow to provide the blowing effect for the denitrification mechanism 4.

[0031] In this method, one end of the round tube 33 is sealed and connected to a conical tube 34, and one end of the conical tube 34 is sealed and connected to an air outlet tube 35. Through the action of the conical tube 34, the airflow is compressed, the airflow speed is further increased, the airflow discharge speed is increased, and the airflow is further avoided from affecting the airflow to provide the stripping effect for the denitrification mechanism 4.

[0032] In this configuration, the filter screen 36 and the three honeycomb silencers 37 are rotatably connected to the same shaft 38. A fan blade 39 is fixedly mounted on one end of the shaft 38, corresponding to the conical tube 34. Two cleaning plates 5 are fixedly mounted on the other end of the shaft 38, both contacting and connected to the filter screen 36 and located on opposite sides of it. A second cleaning plate 6 is fixedly mounted on the shaft 38, contacting and connected to one of the three honeycomb silencers 37. The compressed airflow... The action is applied to the fan blades 39, causing the fan blades 39 to drive the rotating shaft 38 to rotate on the filter screen 36 and the three honeycomb sound-absorbing plates 37. At the same time, the rotating shaft 38 drives the two cleaning plates 5 and 6 to rotate synchronously, so that the two cleaning plates 5 clean both sides of the filter screen 36, preventing debris from clogging the filter screen 36. At the same time, the cleaning plates 5 clean one side of the corresponding honeycomb sound-absorbing plates 37, thereby preventing debris passing through the filter screen 36 from clogging the honeycomb sound-absorbing plates 37.

[0033] In this method, two through holes are opened at the bottom of the round tube 33, and a collection box 7 is sealed and installed in the two through holes. The two through holes correspond to the filter screen 36 and the cleaning plate 6 respectively. The collection box 7 can collect the cleaned debris.

[0034] In this method, the inlet end of the denitrification mechanism 4 is sealed to one end of the outlet pipe 35. Waste gas is transported to the denitrification mechanism 4 through the outlet pipe 35. The denitrification mechanism 4 includes an electric furnace, a temperature sensor, a denitrification catalyst, and a heat exchange box. First, coke oven flue gas enters the furnace chamber through the inlet end and is heated by electric heating rods through heat pipes. Then, it enters the shell and reacts with the denitrification catalyst to remove most of the nitrogen oxides (NOx) in the coke oven flue gas. Finally, it enters the heat exchange box through the first connecting pipe for heat exchange. The medium inside the pipe exchanges heat and then enters the purification box through the second connecting pipe. The flue gas is blocked by the baffle and diffuses throughout the purification box. The water pump delivers ammonia liquid to the spray pipe through the water guide pipe to spray out and desulfurize the flue gas. The ammonia liquid sprayed out by the spray pipe that has not reacted with the flue gas falls onto the filter screen plate, where impurities are isolated. The ammonia liquid is ready to be recycled again. The specific structure and working principle of the denitrification mechanism 4 can be found in the literature with application number: 202321366280.9. This is the prior art and will not be described in detail.

[0035] Working principle: When in use, the blower 2 can generate a sufficient pressure difference to enable the exhaust gas to overcome the pipe resistance and stably draw the exhaust gas from the flue on the coke oven body 1. The exhaust gas is then transported to the denitrification mechanism 4 through the noise reduction mechanism 3. The denitrification mechanism 4 then performs denitrification and desulfurization treatment on the exhaust gas.

[0036] During the process of the exhaust gas being transported into the noise reduction mechanism 3, the airflow generated by the fan 2 is introduced into the noise reduction mechanism 3 through the air inlet pipe 31. At the same time, through the action of the tapered pipe 32, the internal space of the noise reduction mechanism 3 is increased, thereby reducing the airflow speed and thus preventing the airflow speed from being too fast and causing damage to the components.

[0037] At the same time, it avoids the phenomenon of high-speed airflow rushing straight in and producing a harsh sound, thereby achieving the effect of noise reduction;

[0038] Then, the filter screen 36 can filter the impurities in the exhaust gas, thereby intercepting the impurities in the airflow, reducing the noise generated by the collision of impurities with the noise reduction mechanism 3, and further improving the noise reduction effect.

[0039] Subsequently, by setting up three honeycomb silencing plates 37, a single airflow can be divided into multiple airflows, further reducing the impact force of the airflow, further improving the silencing effect of the noise reduction mechanism 3, and further avoiding damage to the components; at the same time, through the action of multiple conical through holes 8, it can be ensured that the overall airflow speed is not too low, so as to avoid affecting the airflow to provide the blowing effect for the denitrification mechanism 4.

[0040] Finally, through the action of the conical tube 34, the airflow is compressed, the airflow speed is increased, the exhaust airflow velocity is increased, and the airflow is further avoided from affecting the airflow to provide the stripping effect for the denitrification mechanism 4.

[0041] Simultaneously, the compressed airflow acts on the fan blades 39, causing the fan blades 39 to drive the rotating shaft 38 to rotate on the filter screen 36 and the three honeycomb sound-absorbing plates 37. At the same time, the rotating shaft 38 drives the two cleaning plates 5 and 6 to rotate synchronously, so that the two cleaning plates 5 clean both sides of the filter screen 36, preventing debris from clogging the filter screen 36. At the same time, the cleaning plates 5 clean one side of the corresponding honeycomb sound-absorbing plates 37, thereby preventing debris passing through the filter screen 36 from clogging the honeycomb sound-absorbing plates 37. Then, the exhaust gas is transported to the denitrification mechanism 4 through the exhaust pipe 35.

[0042] The technological advancements of this invention compared to existing technologies are as follows: through the cooperation of various components, not only can noise reduction be achieved, but damage to the components can also be avoided, and automatic cleaning can be achieved, greatly improving practicality.

Claims

1. A high-flow-rate, low-noise integrated denitrification fan for coke ovens, characterized in that, It includes the main body of the coke oven (1), the blower (2), the noise reduction mechanism (3) and the denitrification mechanism (4); One end of the exhaust pipe on the main body (1) of the coke oven is sealed and connected to a fan (2), and the exhaust end of the fan (2) is provided with a noise reduction mechanism (3), and the denitrification mechanism (4) is connected to the noise reduction mechanism (3); The noise reduction mechanism includes an air inlet pipe (31), a first conical pipe (32), a round pipe (33), a second conical pipe (34), an air outlet pipe (35), a filter screen (36), a honeycomb sound-absorbing plate (37), a rotating shaft (38), and a fan blade (39). One end of the fan (2) is sealed to the air inlet pipe (31), one end of the air inlet pipe (31) is sealed to the first conical pipe (32), one end of the first conical pipe (32) is sealed to the round pipe (33), and three honeycomb sound-absorbing plates (37) are fixedly installed inside the round pipe (33).

2. The integrated high-flow-rate, low-noise fan for coke oven denitrification as described in claim 1, characterized in that, A filter screen (36) is fixedly installed inside the round tube (33), and the filter screen (36) is located between the air intake pipe (31) and one of the three honeycomb sound-absorbing plates (37).

3. The integrated high-flow-rate, low-noise fan for coke oven denitrification as described in claim 2, characterized in that, Each of the three honeycomb mufflers (37) has multiple conical through holes (8), each of the multiple conical through holes (8) corresponds to the air intake pipe (31), and the multiple conical through holes (8) on the three honeycomb mufflers (37) are arranged alternately.

4. The integrated high-flow-rate, low-noise fan for coke oven denitrification as described in claim 2, characterized in that, One end of the round tube (33) is sealed to a tapered tube (34), and one end of the tapered tube (34) is sealed to an air outlet tube (35).

5. The integrated high-flow-rate, low-noise fan for coke oven denitrification according to claim 4, characterized in that, The filter screen (36) and the three honeycomb sound-absorbing plates (37) are rotatably connected to the same shaft (38), and a fan blade (39) is fixedly installed at one end of the shaft (38). The fan blade (39) corresponds to the second tapered tube (34).

6. The integrated high-flow-rate, low-noise fan for coke oven denitrification as described in claim 4, characterized in that, Two cleaning plates (5) are fixedly installed at one end of the rotating shaft (38). Both cleaning plates (5) are in contact with the filter screen (36) and are located on both sides of the filter screen (36). A cleaning plate (6) is fixedly installed on the rotating shaft (38). The cleaning plate (6) is in contact with one of the three honeycomb sound-absorbing plates (37).

7. The integrated high-flow-rate, low-noise fan for coke oven denitrification as described in claim 6, characterized in that, The bottom of the round tube (33) has two through holes, and a collection box (7) is sealed and installed in the two through holes. The two through holes correspond to the filter screen (36) and the cleaning plate (6) respectively.

8. The integrated high-flow-rate, low-noise fan for coke oven denitrification as described in claim 4, characterized in that, The air inlet of the denitrification mechanism (4) is sealed to one end of the air outlet pipe (35).

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