JPH04106646U - Tangential dust collector - Google Patents

Abstract

(57) [Summary] [Purpose] A tangential type collector that has a simple structure and can be produced at low cost, and can remove ash accumulated inside the vertical pipe or the entire dust collector without the risk of damage or other inconveniences. Provide a dust container. [Structure] A cleaning coil 24 is housed in a series in a cell outer cylinder 13 and a cell inner cylinder 17 so as to be freely swingable, and the length of the coil is such that the tip end 27 protrudes from the discharge port 19 of the cyclone 12 when swinging. The length is such that the ash 7 accumulated on the lower inner peripheral surface 21 of the cyclone 12 and the inner peripheral surface position 22 of the vertical pipe 8 facing the discharge port 19 can be scraped off. room 16
It is located inside.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a tangential dust collector installed upstream of the exhaust gas mixing fan of a boiler. It is something to do.

0002

[Conventional technology]

Generally, as shown in FIGS. 3 to 5, a tangential dust collector 1 is used to mix exhaust gas from a boiler 2. It is provided on the upstream side 4 of the ventilation fan 3 and is included in the rough gas 6 discharged from the boiler 2. A device that separates and removes the ash 7 and leads it to the exhaust gas mixing fan 3 as a clean exhaust gas 15. The structure is such that a rough gas chamber 33 and a clean exhaust gas chamber are separated by a partition wall 32. In the casing 5 defined by the chamber 16, there is provided a chamber for discharging the ash 7 contained in the rough gas 6. A vertical pipe 8 is installed inside, and the vertical pipe 8 has a rough gas inlet 10 on the upstream side 9 and a rough gas inlet 10 on the downstream side 11. A plurality of cell outer cylinders 13 equipped with cyclones 12 for separating ash 7 are connected in an inclined state, In addition, clean exhaust gas 15 from which the ash 7 has been separated and removed is placed in the upstream side 9 of the cell outer cylinder 13. A cell inner cylinder 17 to be introduced into the clean exhaust gas chamber 16 is housed therein.

0003 Next, to explain the function of the conventional tangential type precipitator 1, from the boiler 2 to the rough gas chamber 33. The rough gas 6 introduced into the cell outer cylinder 13 from the rough gas inlet 10 enters the cell outer cylinder 13. 13 and cyclone 12, descending to the vertical pipe 8 side, and cyclone 1 The ash 7 contained in the rough gas 6 is separated during the swirling descent in 2, and the separated ash 7 is The water discharged into the vertical pipe 8 from the outlet 19 provided on the downstream side 18 of the Ikron 12 While the ash 7 is dropped into the hopper 20 connected to the lower end of the vertical pipe 8, the ash 7 is separated. The clean exhaust gas 15 is generated by the suction force of the exhaust gas mixing fan 3 shown in FIG. The gas shown in FIG. 4 passes through the cell inner cylinder 17 shown in FIG. 5 and passes through the clean exhaust gas chamber 16. The exhaust gas is introduced into the exhaust gas mixing fan 3 through the outlet 34 .

0004 In the figure, the reference numeral 21 is the lower inner peripheral surface of the cyclone 12, and the reference numeral 22 is relative to the discharge port 19. The position of the inner peripheral surface of the vertical pipe 8 is shown.

[0005]

[Problem that the idea aims to solve]

By the way, if you use a tangential dust collector for a long time, the dust will be separated in the cyclone 12. The ash 7 deposited on the lower inner circumferential surface 21 of the cyclone 12, which serves as a fall path for the ash 7, , before some of the rough gas 6 discharged from the discharge port 19 into the vertical pipe 8 comes into contact with it in a swirling state. It accumulates on the inner circumferential surface position 22 of the vertical pipe 8 facing the discharge port 19, causing a cyclone. 12 and the vertical pipe 8 are closed, and the rough gas 6 containing the ash 7 is introduced into the clean exhaust gas chamber 16. There was a risk that he would be infiltrated.

[0006] In order to solve this problem, in the past, a hammering device (not shown) was used to Hit the vertical pipe 8 to drop the accumulated ash 7, or put a cleaner (not shown) inside the vertical pipe 8. A hammer coil was installed to move it up and down to prevent ash from clogging inside the vertical pipe 8, but The structure of the vertical pipe 8 is complicated and costly, and since the vertical pipe 8 is hit in this way, the vertical pipe 8 and There is a risk that the entire tangential dust collector 1 may be damaged or otherwise inconvenienced. Also, the tube inside the vertical pipe 8 If the leaning coil is damaged, the inside of the vertical tube 8 will be cleaned by the cleaning coil itself. There may also be a problem of blockage.

[0007] This invention was created in view of the above circumstances, and has a simple structure and can be produced at low cost. It can be accumulated inside without the risk of causing any inconvenience such as damage to the vertical pipe or the entire dust collector. The purpose of the present invention is to provide a tangential dust collector capable of removing ash.

[0008]

[Means to solve the problem]

This invention is designed to prevent roughness from occurring inside the casing installed upstream of the exhaust gas mixing fan of the boiler. A vertical pipe is installed internally for discharging ash contained in the gas, and a rough gas inlet is installed on the upstream side, and a downstream pipe is installed. A cell outer cylinder equipped with a cyclone for ash separation on the side is connected to the vertical pipe, and The cell inner cylinder that introduces the exhaust gas from which ash has been separated and removed into the clean exhaust gas chamber is connected to the cell In a tangential dust collector housed in a cell outer cylinder, a series of cleaners are installed inside the cell outer and outer cylinders. The cleaning coil is housed so as to be able to swing freely in the cell axis direction, and the cleaning coil is A swinging mechanism capable of swinging the cleaning chamber is disposed in the clean exhaust gas chamber, and a swinging mechanism capable of swinging the cleaning When the length of the coil is oscillated, the tip end is the outlet provided on the downstream side of the cyclone. The inner circumferential surface of the lower part of the cyclone and the inner surface of the vertical pipe that protrudes from the The length is sufficient to scrape off the ash that has accumulated on the circumferential surface.

[0009]

[Effect]

By operating the swing mechanism and swinging the cleaning coil in the cell axis direction, The cleaning coil faces the lower inner peripheral surface of the cyclone and the cyclone outlet. Scrape off the ash that has accumulated on the inner peripheral surface of the vertical pipe. This allows all vertical pipes and dust collectors to Removes ash accumulated inside a tangential dust collector without the risk of causing injury or other inconvenience to the body. I can do it.

0010

【Example】

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

[0011] In the drawings, the same components as those shown in FIGS. 3 to 5 are given the same reference numerals.

0012 The tangential dust collector 23 according to the embodiment of the present invention shown in FIG. 7, a series of cleaning coils 24 are housed so as to be swingable in the direction of the cell axis 25. and a swinging mechanism 2 capable of swinging the cleaning coil 24 into the clean exhaust gas chamber 16. 6 is arranged, and the cleaning coil 24 is a piano wire with a diameter of about 4 mm. It is formed in a spiral shape, and when it swings, the tip 27 connects to the outlet 1 of the cyclone 12. 9 and faces the lower inner circumferential surface 21 of the cyclone 12 and the discharge port 19. It has a length that can scrape off the ash 7 accumulated on the inner circumferential surface position 22 of the vertical pipe 8.

[0013] The cleaning coil 24 of the embodiment is a coil that cleans the inside of the cell inner cylinder 17. It has an oil-shaped base 28 and tapers toward the tip like the cyclone 12. The coil-shaped tip 27 is connected to the straight middle part 29, and it does not swing. Under normal conditions, the tip 27 protrudes from the outlet 19 of the cyclone 12. It is housed inside the cell inner and outer cylinders 13 and 17, and the base part 28 has a hinge 30. The swing arm 31 connected to a drive source (not shown) of the swing mechanism 26 via the swing mechanism 26 swings. They are freely connected. The tangential dust collector 23 has such a simple structure, Therefore, it can be produced at low cost. In addition, the lower inner circumferential surface 21 of the cyclone 12 and Scrape off the ash 7 accumulated on the inner peripheral surface position 22 of the vertical pipe 8 facing the discharge port 19 Spiral-shaped cleaning material that can be scraped off smoothly with less wear Since the cyclone coil 24 is used, the ash 7 such as the lower inner circumferential surface 21 of the cyclone 12 is There is little risk of damaging the surface to which it is attached.

[0014] Next, the operation of the tangential dust collector according to the embodiment of the present invention will be explained.

[0015] When the swing mechanism 26 is operated to swing the swing arm 31, the cleaning coil 24 swings within the cell inner and outer cylinders 13 and 17 in the cell axis direction 25, as shown in FIG. The position on the inner peripheral surface of the vertical tube 8 where the tip portion 27 protrudes from the discharge port 19 and faces the discharge port 19 22. This allows the base 28 of the cleaning coil 24 to While cleaning inside the cyclone 7, the tapered tip 27 cleans inside the lower part of the cyclone 12. An inner peripheral surface position 22 of the vertical pipe 8 facing the peripheral surface 21 and the outlet 19 of the cyclone 12 To smoothly scrape off the ash 7 accumulated on the surface. Therefore, the lower inner peripheral surface 2 of the cyclone 12 1 and the inner peripheral surface position 22 of the vertical pipe 8 can be prevented from growing and accumulating. There is no risk of damage or other inconvenience to the tangential dust collector 23 as a whole.

[0016] Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. However, even if there is a design change that does not deviate from the gist of the invention, it is included in this invention. For example, in the embodiment, the cleaning coil cleans the inside of the cell cylinder. It has a coiled base and tapers towards the tip, similar to a cyclone. Although we adopted a method in which the coiled tip is connected to the straight middle part, this is not necessarily the case. There is no need to limit the Deposits were deposited on the lower inner circumferential surface of the Ikron and the inner circumferential surface of the vertical pipe facing the discharge port. It is sufficient if the tip part capable of scraping off ash is coiled, and in the embodiment, Although a cleaning coil with a swinging arm is shown as the swinging mechanism, be sure to Although it is not limited to this, it may consist of any other mechanism. Of course.

[0017]

[Effect of the idea]

This invention automatically oscillates a series of cleaning coils in the cell axis direction within the cell inner and outer cylinders. A swing mechanism that can swing the cleaning coil inside the clean exhaust gas chamber is installed. and the length of the cleaning coil so that the tip becomes a cyclone when rocking. The lower inner peripheral surface of the cyclone and the discharge port protrude from the discharge port provided on the downstream side. The length is such that the ash accumulated on the inner circumferential surface of the vertical pipe facing the mouth can be scraped off. Therefore, it has a simple structure and low cost to clear the ash accumulated in the tangential precipitator. cleaning coil, and also operates the swing mechanism to swing the cleaning coil. The vertical pipe facing the lower inner peripheral surface of the cyclone and the cyclone outlet In order to scrape off the ash that has accumulated on the inner circumferential surface of the There is no risk of causing any inconvenience.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of main parts of a tangential dust collector according to an embodiment of the present invention.

FIG. 2 is an enlarged view of section II in FIG. 1;

FIG. 3 is a schematic diagram of a partially circulating exhaust gas boiler device that employs a conventional tangential precipitator.

FIG. 4 is an overall schematic diagram of a conventional tangential dust collector.

FIG. 5 is an enlarged schematic diagram of the V section in FIG. 4;

[Explanation of symbols]

1,23 Tangential dust collector 3 Exhaust gas mixing ventilator 4,9 Upstream side 5 Casing 6 Ara gas 7 Ash 8 Vertical pipe 10 Rough gas inlet 11,18 Downstream side 12 Cyclone 13 Cell outer cylinder 15 Clean exhaust gas 16 Clean exhaust gas chamber 17 Cell inner cylinder 19 Outlet 21 Lower inner peripheral surface 22 Inner peripheral surface position 24 Cleaning coil 25 Cell axis 26 Swing mechanism 27 Tip

Claims (1)

[Scope of utility model registration request] [Claim 1] A vertical pipe for discharging ash contained in the rough gas is installed inside the casing provided on the upstream side of the exhaust gas mixing fan of the boiler, with a rough gas inlet on the upstream side and a rough gas inlet on the downstream side. A tangent line in which a cell outer cylinder equipped with a cyclone for ash separation is connected to the vertical pipe, and a cell inner cylinder for introducing the exhaust gas from which ash has been separated and removed from the rough gas into the clean exhaust gas chamber is housed in the cell outer cylinder. In the dust collector, a cleaning coil is housed in a series in the inner and outer cylinders of the cell so as to be able to swing freely in the cell axis direction, and a swinging mechanism capable of swinging the cleaning coil is disposed in the clean exhaust gas chamber, The length of the cleaning coil is adjusted such that when the cleaning coil is oscillated, the tip protrudes from a discharge port provided on the downstream side of the cyclone and is positioned on the lower inner circumferential surface of the cyclone and on the inner circumferential surface of the vertical pipe opposite to the discharge port. A tangential dust collector characterized by being long enough to scrape off accumulated ash.