Boiler smoke purification device

Abstract

The present invention relates to the technical field of boiler smoke purification, and discloses a boiler smoke purification device, including a ventilation pipe, a filter piston is slidably connected inside the ventilation pipe, a conical air nozzle is arranged on the side of the ventilation pipe close to the air intake, the diameter of the conical air nozzle close to the filter piston is reduced, an intake ring fixedly connected to the ventilation pipe is arranged on the side of the conical air nozzle away from the filter piston, an on-off selection component is rotatably connected to the middle of the intake ring, and a linkage component matched with the filter piston and the on-off selection component is arranged on the side wall of the ventilation pipe. The present invention reduces the air flow permeability through the filtering of the filter piston itself, so that the filter piston falls and collides with the conical air nozzle to shake off impurities, thereby achieving the self-cleaning effect of the filter piston, so that the filter piston can perform filtering work for a long time without manual cleaning.

Description

Technical Field

[0001] The invention relates to the technical field of boiler smoke purification, in particular to a boiler smoke purification device. Background Art

[0002] Boilers are widely used in production and life. Existing boilers, especially small and medium-sized boilers, mostly discharge their flue gas directly into the atmosphere. The dust and sulfur oxides in the flue gas will cause serious pollution to the environment. Therefore, it is necessary to install a smoke purifier inside the boiler's exhaust pipe to filter out the particulate matter inside the gas.

[0003] The existing smoke purification device simply places the filter plate in the pipeline, which means that the filter plate needs to be removed and cleaned after the boiler has been working for a period of time. It is cumbersome to use, so it needs to be improved. Summary of the invention

[0004] The present invention provides a boiler smoke purification device, which solves the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A boiler smoke purification device comprises a ventilation pipe, wherein a filter piston is slidably connected inside the ventilation pipe, a conical air nozzle is arranged on the side of the ventilation pipe close to the air intake, the diameter of the conical air nozzle on the side close to the filter piston is reduced, an intake ring fixedly connected to the ventilation pipe is arranged on the side of the conical air nozzle away from the filter piston, an on-off selection component is rotatably connected to the middle of the intake ring, a linkage component cooperating with the filter piston and the on-off selection component is arranged on the side wall of the ventilation pipe, when the filter piston slides to the side away from the conical air nozzle, the linkage component drives the on-off selection component to close the intake ring, at which time the airflow inside the ventilation pipe is blocked, when the filter piston slides to contact with the conical air nozzle, the linkage component drives the on-off selection component to open the intake ring, at which time the airflow inside the ventilation pipe is conducted. A discharge pipe is arranged at the position where the conical air nozzle is connected to the inner wall of the ventilation pipe, and connecting flanges are arranged at both ends of the ventilation pipe.

[0007] As a preferred technical solution of the present invention, the on-off selection component includes air holes arranged on the air intake ring. The air holes are fan-shaped and evenly distributed along the center of the air intake ring. The middle part of the air intake ring is rotatably connected with a rotating shaft. The end of the rotating shaft close to the conical air nozzle is provided with a baffle that cooperates with the air hole. After the rotating shaft rotates, the baffle overlaps or staggered with the air hole.

[0008] As a preferred technical solution of the present invention, the linkage assembly includes a transverse beam arranged on the side of the intake ring away from the conical air nozzle, the two sides of the transverse beam are slidably connected to the side walls of the ventilation duct, a protrusion is arranged in the middle of the transverse beam, and levers are arranged on both sides of the protrusion. A deflection plate is arranged at the end of the rotating shaft, and the deflection plate is arranged between the two levers. Vertical plates are arranged at both ends of the transverse beam, and the two vertical plates are respectively provided with a first push rod and a second push rod slidably connected to the side walls of the ventilation duct. The first push rod and the second push rod are respectively arranged on both sides of the filter piston, and a first trapezoidal push block is arranged on the side of the filter piston close to the conical air nozzle. When the first trapezoidal push block contacts the first push rod, the first push rod moves in a direction away from the center of the ventilation duct, and a second trapezoidal push block is arranged on the side of the filter piston away from the conical air nozzle. When the second trapezoidal push block contacts the second push rod, the second push rod moves in a direction away from the center of the ventilation duct. The end of the first push rod is provided with a first ball head matched with the first trapezoidal push block, and the end of the second push rod is provided with a second ball head matched with the second trapezoidal push block.

[0009] As a preferred technical solution of the present invention, a fixed disc cooperating with the conical air nozzle is provided in the middle of the filter piston, reinforcing ribs are provided between the fixed disc and the side of the filter piston, a filter net is provided between two adjacent reinforcing ribs, and the diameter of the fixed disc is greater than or equal to the diameter of the end of the conical air nozzle.

[0010] As a preferred technical solution of the present invention, the outer side of the filter piston is slidably connected with a guide slide rod, and both ends of the guide slide rod are provided with fixed blocks fixedly connected to the inner wall of the ventilation pipe, and a return spring cooperating with the filter piston is provided on the fixed block near the air outlet end of the ventilation pipe. When the filter piston contacts the conical air nozzle, the return spring disengages from the filter piston.

[0011] The present invention has the following benefits:

[0012] The filtering by the filter piston itself causes the air flow to be reduced, so that the filter piston falls and collides with the conical air nozzle to shake off the impurities, achieving the self-cleaning effect of the filter piston, so that the filter piston can perform filtering work for a long time without manual cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 The figure is a structural schematic diagram of a boiler smoke purification device.

[0015] Figure 2 The present invention is a schematic diagram of the structure inside the ventilation duct in a boiler smoke purification device.

[0016] Figure 3 for Figure 2 Front view of .

[0017] Figure 4 This is a schematic diagram of the structure of a boiler smoke purification device after the filter piston moves downward.

[0018] Figure 5 for Figure 4 Front view of .

[0019] Figure 6 The diagram is a structural diagram of the contact between the filter piston and the conical gas nozzle in a boiler smoke purification device.

[0020] Figure 7 The figure is a schematic diagram of the structure of a boiler smoke purification device after the vent hole is opened.

[0021] Figure 8 The present invention is a structural schematic diagram of an on-off selection component in a boiler smoke purification device.

[0022] Fig. 9 This is a schematic diagram of the structure of a boiler smoke purification device after the filter piston moves upward.

[0023] Fig.10 for Fig. 9 A is a partial enlarged schematic diagram of the middle part.

[0024] Fig.11 The present invention is a schematic diagram of the structure of a boiler smoke purification device after the vent hole is closed.

[0025] In the figure: 1. ventilation duct; 2. connecting flange; 3. conical air nozzle; 4. intake ring; 5. on-off selection assembly; 6. transverse beam; 7. first push rod; 8. first ball head; 9. first trapezoidal top block; 10. filter piston; 11. guide slide rod; 12. return spring; 13. fixed block; 14. vent; 15. baffle; 16. rotating shaft; 17. bump; 18. lever; 19. deflection plate; 20. second trapezoidal top block; 21. second ball head; 22. second push rod; 23. sliding rod; 24. fixed disc; 25. reinforcing rib; 26. filter screen; 27. vertical plate; 28. discharge pipe; 29. ​​linkage assembly. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In one embodiment, see Figure 1-Figure 11 A boiler smoke purification device includes a ventilation pipe 1, a filter piston 10 is slidably connected inside the ventilation pipe 1, and the filter piston 10 is arranged perpendicular to the axis of the ventilation pipe 1. The ventilation pipe 1 is a hollow columnar structure. Connecting flanges 2 are arranged at both ends of the ventilation pipe 1. The ventilation pipe 1 can be connected to the existing exhaust pipe through the connecting flanges 2. Figure 2 The positional relationship of is used to describe the subsequent structural position. A conical air nozzle 3 is arranged at the lower position of the ventilation pipe 1. The lower end of the conical air nozzle 3 has a larger diameter and is fixedly connected to the inner wall of the ventilation pipe 1. The upper end of the conical air nozzle 3 has a smaller diameter, and the interior of the conical air nozzle 3 is also a hollow conical structure. An intake ring 4 is arranged below the conical air nozzle 3. The intake ring 4 is parallel to the filter piston 10, and an on-off selection component 5 is arranged in the middle of the intake ring 4. The on-off selection component 5 can control the on-off of the intake ring 4, thereby controlling whether the airflow can enter the interior of the conical air nozzle 3 from bottom to top. In addition, a linkage assembly 29 that moves synchronously with the filter piston 10 is provided on the left and right side walls of the ventilation duct 1. When the filter piston 10 moves downward, it will collide with the conical air nozzle 3. At this time, the filter piston 10 drives the on-off selection assembly 5 to work through the linkage assembly 29. At this time, the air intake ring 4 is opened, and the airflow can enter the interior of the conical air nozzle 3 from bottom to top. When the filter piston 10 moves upward for a distance, the filter piston 10 drives the on-off selection assembly 5 to work through the linkage assembly 29. At this time, the air intake ring 4 is closed, and the airflow is blocked below the air intake ring 4 and cannot enter the interior of the conical air nozzle 3.

[0028] In one case of the present embodiment, the on-off selection component 5 includes a plurality of air holes 14 arranged on the air intake ring 4, the air holes 14 are fan-shaped, and are symmetrically distributed relative to the central circumference of the air intake ring 4, and a vertically arranged rotating shaft 16 is rotatably connected to the center of the air intake ring 4, and a plurality of baffles 15 are fixedly connected to the upper end of the rotating shaft 16, and the number and size of the baffles 15 and the air holes 14 are the same, so when the rotating shaft 16 rotates a certain angle, the baffles 15 can be located just above the air holes 14 to block the air holes 14, and the air intake ring 4 blocks the airflow below, and if the rotating shaft 16 rotates in the opposite direction by a certain angle, the baffles 15 are just offset from the air holes 14, and the air holes 14 are in an open state, and the airflow of the air intake ring 4 flows freely.

[0029] In one case of the present embodiment, the linkage assembly 29 includes a transverse beam 6 arranged on the side of the intake ring 4 away from the conical air nozzle 3, the transverse beam 6 is horizontally arranged below the intake ring 4, and the left and right sides of the transverse beam 6 are slidably connected to the side walls of the ventilation duct 1, a protrusion 17 is arranged on the front side of the middle part of the transverse beam 6, and levers 18 are vertically arranged on the left and right sides of the upper surface of the protrusion 17, and the rear end of the horizontally arranged deflection plate 19 is fixedly connected to the lower end of the rotating shaft 16, and the front end of the deflection plate 19 is located between the two levers 18. Therefore, when the transverse beam 6 moves left and right, the transverse beam 6 drives the deflection plate 19 to deflect left and right through the lever 18, so that the rotating shaft 16 rotates, and because there is a gap between the two levers 18, the lever 18 The rod 18 will not get stuck with the deflection plate 19. Vertical plates 27 are vertically arranged at the left and right ends of the upper surface of the transverse beam 6. A first push rod 7 is horizontally arranged above the right side surface of the left vertical plate 27. The middle part of the first push rod 7 is slidably connected to the left side wall of the ventilation duct 1, and a first ball head 8 is arranged at the right end of the first push rod 7. The first push rod 7 is located below the filter piston 10. A first trapezoidal top block 9 is arranged on the left side of the lower surface of the filter piston 10. The inclined surface of the first trapezoidal top block 9 is located at the bottom, and the shorter plane of the first trapezoidal top block 9 is located on the left side. Therefore, when the first trapezoidal top block 9 moves downward with the filter piston 10, the first ball head 8 will first contact the inclined surface of the first trapezoidal top block 9, and then the first trapezoidal top block 9 will be pushed to the left. The first push rod 7 causes the transverse beam 6 to move to the left. At this time, the lever 18 drives the deflection plate 19 to deflect to the left, and the rotating shaft 16 drives the baffle 15 to rotate, so that the baffle 15 is staggered with the vent hole 14. At this time, the air intake ring 4 is opened, and a second push rod 22 is horizontally arranged on the left side of the vertical plate 27 on the right. The middle part of the second push rod 22 is slidably connected with the right side wall of the ventilation duct 1, and a second ball head 21 is arranged on the left end of the second push rod 22, and the second push rod 22 is located above the filter piston 10. A second trapezoidal top block 20 is arranged on the right side of the upper surface of the filter piston 10, and the inclined surface of the second trapezoidal top block 20 is located at the top, and the short side of the second trapezoidal top block 20 is located on the right. Therefore, when the filter piston 10 moves upward, the second trapezoidal The inclined surface of the top block 20 will first contact the second ball head 21, and the second trapezoidal top block 20 will push the second top rod 22 to move to the right. At this time, the transverse beam 6 moves to the right, and the rotating shaft 16 drives the baffle 15 to rotate to the top of the vent 14, so that the vent 14 is blocked, that is, after the filter piston 10 moves to the bottom, the vent 14 opens, and after the filter piston 10 moves to the top, the vent 14 is closed, and a bushing is arranged between the transverse beam 6 and the ventilation pipe 1, and the bushing has a certain friction force. When the transverse beam 6 is not pushed by the filter piston 10, the transverse beam 6 itself will not move, that is to say, when the filter piston 10 is in the middle position, the on and off of the vent 14 will not change.In order to ensure that the vertical plate 27 can move left and right better without being stuck, a sliding rod 23 is slidably connected to the upper end of the vertical plate 27, and the end of the sliding rod 23 is fixedly connected to the outer side of the ventilation duct 1.

[0030] In one case of this embodiment, a fixed disc 24 cooperating with the conical air nozzle 3 is provided in the middle of the filter piston 10, a reinforcing rib 25 is provided between the fixed disc 24 and the side of the filter piston 10, a filter screen 26 is provided between two adjacent reinforcing ribs 25, and the diameter of the fixed disc 24 is greater than or equal to the diameter of the upper end of the conical air nozzle 3. That is to say, the fixed disc 24, the reinforcing rib 25 and the circular ring outside the filter piston 10 form a frame structure, and the filter screen 26 is provided in the gap of the frame structure. In this way, the weight of the entire filter piston 10 can be reduced, so that the airflow can blow the filter piston 10 upward in the initial stage. On the other hand, since the fixed disc 24 is provided at the center position, when the filter piston 10 collides with the conical air nozzle 3, the fixed disc 24 contacts the conical air nozzle 3 to prevent the filter screen 26 from being damaged by the impact. At this time, since the filter screen 26 is located outside the conical air nozzle 3, the impurities dropped by the filter screen 26 due to vibration will fall on the outside of the conical air nozzle 3 and slide along the conical air nozzle 3. To the position where the conical air nozzle 3 is connected to the ventilation pipe 1, impurities are prevented from re-entering the air path and causing secondary pollution. At this time, a discharge pipe 28 can be set at the position where the conical air nozzle 3 is connected to the ventilation pipe 1, and the on and off of the discharge pipe 28 can be freely set. When it is necessary to discharge impurities, open the discharge pipe 28, and the impurities slide along the inclined surface outside the conical air nozzle 3 to the bottom and are finally discharged through the discharge pipe 28. When the filter screen 26 of the filter piston 10 is blocked and falls downward, the airflow on both sides of the conical air nozzle 3 is pushed downward along with the filter piston 10, so that the airflow can drive the impurities to flow out through the discharge pipe 28, thereby improving the discharge effect and achieving the self-cleaning effect.

[0031] In one case of the present embodiment, a vertically arranged guide slide bar 11 is slidably connected to the side wall of the filter piston 10. The guide slide bar 11 is provided to make the up and down movement of the filter piston 10 more stable, and a sealing ring is provided on the side wall of the filter piston 10 to improve the air tightness between the filter piston 10 and the inner wall of the ventilation pipe 1. Fixed blocks 13 fixedly connected to the inner wall of the ventilation pipe 1 are provided at the upper and lower ends of the guide slide bar 11, and a return spring 12 is provided on the lower surface of the upper fixed block 13. The upper end of the return spring 12 is fixedly connected to the fixed block 13, and the return spring 12 is sleeved on the outside of the guide slide bar 11. The return spring 12 is not When subjected to force, the position of the lower end is higher than the height of the conical air nozzle 3, that is to say, when the filter piston 10 moves downward and contacts the conical air nozzle 3, the lower end of the return spring 12 is separated from the filter piston 10, so that the airflow can better blow the filter piston 10 upward. During normal operation, the gravity of the filter piston 10 and the attached impurities can generate a downward force. However, in order to increase the downward force value, a return spring 12 is provided. The elastic force of the return spring 12 increases the initial downward thrust of the filter piston 10, thereby increasing the impact force between the filter piston 10 and the conical air nozzle 3, so that the impurities can be better separated from the filter piston 10.

[0032] During the implementation of this embodiment, the ventilation pipe 1 is connected to the exhaust pipe of the boiler through the connecting flange 2, and it is ensured that the exhaust gas can pass through the ventilation pipe 1 from bottom to top. At this time, the whole device can work normally.

[0033] In the gas filtering process, the airflow enters the inside of the ventilation pipe 1 from bottom to top, and enters the inside of the conical air nozzle 3 through the air vent 14 of the air intake ring 4. As the diameter of the inside of the conical air nozzle 3 gradually decreases, the flow rate of the airflow will gradually increase. At this time, the airflow will lift the filter piston 10, so that the filter piston 10 is separated from the conical air nozzle 3. After the airflow flows out from the top of the conical air nozzle 3, the flow cross-section of the airflow suddenly increases, so that the flow rate of the airflow will decrease rapidly. At this time, part of the impurities will fall and fall on the upper surface of the conical air nozzle 3. The outside of the conical air nozzle 3 slides along the inclined surface of the outside of the conical air nozzle 3 to the connection between the conical air nozzle 3 and the inner wall of the ventilation pipe 1, and the gas passes through the filter screen 26 of the filter piston 10 and flows upward. At this time, the impurities in the air flow will be blocked at the bottom by the filter screen 26 to achieve the filtering effect. As the impurities are continuously attached to the filter screen 26, the ventilation efficiency of the filter screen 26 is gradually reduced, that is to say, the upward thrust of the gas on the filter screen 26 is gradually increasing, the filter piston 10 is in contact with the return spring 12, and the return spring 12 is continuously compressed.

[0034] During self-cleaning, when the filter piston 10 moves upward, the second trapezoidal top block 20 will contact the second ball head 21. At this time, the air vent 14 of the air inlet pipe is closed with the cooperation of the linkage assembly 29. At this time, there is no upward airflow, but a small part of the gas can still pass through the filter screen 26. Under the downward elastic force of the return spring 12 and the downward gravity of the filter piston 10 itself, the filter piston 10 will fall downward quickly, and the fixed disk 24 in the middle of the filter piston 10 will hit the upper end of the conical air nozzle 3. At this time, the impurities attached to the lower surface of the filter screen 26 will be shaken off and At this time, the first trapezoidal top block 9 on the lower surface of the filter piston 10 will contact the first ball head 8, and the vent 14 will be opened under the action of the linkage assembly 29. At this time, the airflow from bottom to top will be generated again, and the airflow will push the filter piston 10 upward again, and the ventilation pipe 1 will perform airflow filtering again. Although the opening of the vent 14 and the collision of the filter piston 10 with the conical air nozzle 3 occur basically simultaneously, under the inertia of the filter piston 10 moving downward, the filter piston 10 will overcome the upward airflow and still collide with the conical air nozzle 3 for self-cleaning.

[0035] The present invention is applicable to a boiler smoke purification device, which reduces the airflow permeability through filtering by the filter piston 10 itself, so that the filter piston 10 falls and collides with the conical air nozzle 3 to shake off impurities, thereby achieving a self-cleaning effect of the filter piston 10, so that the filter piston 10 can perform filtering work for a long time without manual cleaning.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A boiler smoke purification device, characterized in that: The air filter piston is slidably connected to the inside of the air filter pipe, a conical air nozzle is arranged on the side of the air filter pipe close to the air intake, the diameter of the conical air nozzle is reduced on the side of the conical air nozzle close to the filter piston, an air intake ring fixedly connected to the air filter pipe is arranged on the side of the conical air nozzle far away from the filter piston, an on-off selection component is rotatably connected to the middle part of the air intake ring, a linkage component cooperating with the filter piston and the on-off selection component is arranged on the side wall of the air filter pipe, when the filter piston slides to the side away from the conical air nozzle, the linkage component drives the on-off selection component to close the air intake ring, at which time the airflow inside the air filter pipe is blocked, and when the filter piston slides to contact the conical air nozzle, the linkage component drives the on-off selection component to open the air intake ring, at which time the airflow inside the air filter pipe is conducted.

2. A boiler smoke purification device according to claim 1, characterized in that: The on-off selection component includes air holes arranged on the intake ring. The air holes are fan-shaped and evenly distributed along the center of the intake ring. The middle part of the intake ring is rotatably connected with a rotating shaft. A baffle matching the air holes is arranged at one end of the rotating shaft close to the conical air nozzle. After the rotating shaft rotates, the baffle overlaps or staggers with the air holes.

3. A boiler smoke purification device according to claim 2, characterized in that: The linkage assembly includes a transverse beam arranged on a side of the intake ring away from the conical air nozzle, two sides of the transverse beam are slidably connected to the side walls of the ventilation pipe, a protrusion is arranged in the middle of the transverse beam, and levers are arranged on both sides of the protrusion. A deflection plate is arranged at the end of the rotating shaft, and the deflection plate is arranged between the two levers. Vertical plates are arranged at both ends of the transverse beam, and a first push rod and a second push rod slidably connected to the side walls of the ventilation pipe are respectively arranged on the two vertical plates. The first push rod and the second push rod are respectively arranged on both sides of the filter piston, and a first trapezoidal push block is arranged on the side of the filter piston close to the conical air nozzle. When the first trapezoidal push block contacts the first push rod, the first push rod moves in a direction away from the center of the ventilation pipe, and a second trapezoidal push block is arranged on the side of the filter piston away from the conical air nozzle. When the second trapezoidal push block contacts the second push rod, the second push rod moves in a direction away from the center of the ventilation pipe, and a first ball head cooperating with the first trapezoidal push block is arranged at the end of the first push rod, and a second ball head cooperating with the second trapezoidal push block is arranged at the end of the second push rod.

4. A boiler smoke purification device according to claim 1, characterized in that: A fixed disc cooperating with the conical air nozzle is arranged in the middle of the filter piston, reinforcing ribs are arranged between the fixed disc and the side of the filter piston, a filter net is arranged between two adjacent reinforcing ribs, and the diameter of the fixed disc is greater than or equal to the diameter of the end of the conical air nozzle.

5. A boiler smoke purification device according to claim 1, characterized in that: A discharge pipe is arranged at the position where the conical air nozzle is connected to the inner wall of the ventilation pipe, and connecting flanges are arranged at both ends of the ventilation pipe.

6. A boiler smoke purification device according to claim 1, characterized in that: The outer side of the filter piston is slidably connected to a guide slide rod, and both ends of the guide slide rod are provided with fixed blocks fixedly connected to the inner wall of the ventilation pipe. A return spring cooperating with the filter piston is provided on the fixed block close to the air outlet end of the ventilation pipe. When the filter piston contacts the conical air nozzle, the return spring disengages from the filter piston.

Images