A dust cleaning device for ceramic filter element dust collector

Abstract

The present invention provides a dust cleaning device for a ceramic filter element dust collector, comprising a ceramic filter element, the ceramic filter element being a hollow cylindrical structure, the ceramic filter element comprising a first end and a second end, the first end being an opening, the second end being funnel-shaped, the second end also being provided with a dust drop opening, comprising a spray main pipe and a spray branch pipe detachably mounted on the spray main pipe, the first end being fixed with a gland, the gland being provided with a first through hole, the spray branch pipe entering the inner cavity of the ceramic filter element from the first through hole. The present invention can reduce the dust accumulation rate inside the ceramic filter element, improve the dust cleaning strength of the present invention, and has a high dust cleaning efficiency.

Description

Technical Field

[0001] The present invention relates to the field of air pollution control technology, in particular to a dust cleaning device for a ceramic filter element dust collector, which can be used for a dust cleaning system for a ceramic filter element dust collector and is suitable for the flue gas dust removal field of power station boilers, industrial boilers, incinerators, etc. Background Art

[0002] Ceramic filter dust collector is a new type of industrial purification equipment that relies on filtration to collect dust. Its working principle is: relying on the new filter material - the tiny pores of the porous ceramic filter element to collect and filter the dust in the flue gas, and then by cleaning the filter material to separate the dust accumulated on the filter element from the filter element, and then the conveying equipment transports the separated dust to the designated location.

[0003] For ceramic filter elements, due to their different physical properties from traditional filter bags, namely the characteristics of material thickness and strength, the traditional bag cleaning method has the characteristics of low cleaning efficiency, low cleaning intensity and high dust accumulation rate.

[0004] In order to overcome the problems existing in the traditional cleaning method, there is an urgent need for a cleaning device that can remove the dust accumulated on the surface of a hard material such as a ceramic filter element. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a dust cleaning device for a ceramic filter element dust collector.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a cleaning device for a ceramic filter element dust collector, comprising a ceramic filter element, the ceramic filter element is a hollow cylindrical structure, the ceramic filter element comprises a first end and a second end, the first end is an opening, the second end is funnel-shaped, the second end is also provided with an ash drop port, comprising a blowing main pipe and a blowing branch pipe detachably installed on the blowing main pipe, the first end is fixed with a pressure cover, the pressure cover is provided with a first through hole, and the blowing branch pipe enters the inner cavity of the ceramic filter element from the first through hole.

[0007] Preferably, the injection main pipe is arranged laterally above the side of the ceramic filter element.

[0008] Preferably, the injection main pipe includes a main pipe and a branch pipe, the branch pipe is fixed on the left and right sides of the main pipe, the main pipe is communicated with the inner cavity of the branch pipe, and a certain angle is formed between the main pipe and the branch pipe, and the angle ranges from 20° to 90°.

[0009] Preferably, the angle ranges from 45° to 50°.

[0010] Preferably, a first sealing ring is further provided between the gland and the first end, a second sealing ring is sleeved and fixed on the blowing branch pipe, and the second sealing ring seals the first through hole.

[0011] Preferably, the blowing branch pipe enters the inner cavity of the ceramic filter element along the central axis of the ceramic filter element.

[0012] Preferably, the inner cavity of the ceramic filter element is further provided with a blowing claw, and the blowing claw is sleeved on the blowing branch pipe, and the blowing claw and the blowing branch pipe are rotatably matched.

[0013] Preferably, the blowing claw includes a sleeve, a fan blade, a scraper and a connecting rod, the fan blade is fixed to the outer wall of the sleeve, one end of the connecting rod is respectively fixed to the sleeve on the upper and lower sides of the fan blade, and the other end of the connecting rod fixes the scraper.

[0014] Preferably, the distance between the scraper and the inner cavity wall of the ceramic filter element is 0.2 cm-0.5 cm.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The spray pipe is side-mounted and arranged above the ceramic filter element. Unlike the traditional structure in which the spray pipe is placed directly above the filter element, when the filter element needs to be replaced, it is not necessary to remove the spray pipe first before removing the filter element, thereby reducing the labor intensity. (2) The spray branch pipe enters the inner cavity of the ceramic filter element along the central axis of the ceramic filter element. When the spray pipe is connected to the compressed gas, the spray branch pipe can effectively deliver the compressed gas to the surface of the inner cavity of the filter element that needs to be cleaned. Because the ceramic filter element is a hard material surface, it is conducive to removing the dust accumulated on the inner cavity surface, thereby improving the cleaning efficiency of the present invention. (3) The present invention uses compressed gas as a power to drive the spray claw to rise and fall and rotate. The spray claw includes a scraper. The distance between the scraper and the inner cavity wall of the ceramic filter element is 0.2cm-0.5cm. When the spray claw rotates, the scraper will rotate with the spray branch pipe as the center of the circle, thereby scraping off some dust on the inner cavity surface of the ceramic filter element that cannot be removed by wind power, reducing the dust accumulation rate inside the ceramic filter element and improving the dust cleaning strength of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the dust cleaning device for a ceramic filter element dust collector of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the spray branch pipe of the dust cleaning device for the ceramic filter element dust collector of the present invention;

[0018] Figure 3 It is a schematic structural diagram of the spray claw of the dust cleaning device for the ceramic filter element dust collector of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure in which the injection pipe is placed directly above the filter element in a traditional structure. DETAILED DESCRIPTION

[0020] In order to further understand the purpose, structure, features, and functions of the present invention, the following detailed description is made in conjunction with the embodiments. Figure 1 and 2 As shown, a cleaning device for a ceramic filter element dust collector includes a ceramic filter element 100, and the ceramic filter element 100 is a hollow cylindrical structure. The ceramic filter element 100 includes a first end 110 and a second end 120, the first end 110 is an opening, and the second end 120 is funnel-shaped. The second end is also provided with an ash drop port 121, and also includes a blowing main pipe 200 and a blowing branch pipe 300 detachably installed on the blowing main pipe, the first end 110 is fixed with a pressure cover 111, and the pressure cover 111 is provided with a first through hole 112, and the blowing branch pipe 300 enters the inner cavity of the ceramic filter element 100 from the first through hole 112.

[0021] In one embodiment, if Figure 1 As shown, the injection main pipe 200 is transversely arranged on the upper side of the ceramic filter element 100. The injection main pipe 200 includes a main pipe 210 and a branch pipe 220. The branch pipe 220 is fixed on the left and right sides of the main pipe 210. The main pipe 210 communicates with the inner cavity of the branch pipe 220. A certain angle is formed between the main pipe 210 and the branch pipe 220. The angle ranges from 20° to 90°.

[0022] In one embodiment, if Figure 1 As shown, the angle range is 45°-50°, and the spray pipe 200 is side-mounted and arranged above the ceramic filter element 100. Unlike the traditional structure in which the spray pipe is placed directly above the filter element, when the filter element needs to be replaced, it is not necessary to remove the spray pipe first and then remove the filter element, thereby reducing labor intensity. Figure 4 As shown, in the traditional structure, the spray pipe 1 is arranged directly above the filter element or filter material. There are often several rows of spray pipes 1 and filter elements 3 in the equipment. A spray nozzle 2 is arranged at the position corresponding to the spray pipe and the filter element opening. When one or several filter elements are damaged or need to be replaced, the spray pipe located directly above the filter element will hinder the removal of the filter element. Therefore, the spray pipe must be removed as a whole before the subsequent removal of the filter element can be carried out. In large dust removal equipment, the spray pipe is often large and heavy, which is particularly inconvenient to disassemble and has high labor intensity. In one embodiment, as Figure 2As shown, a first sealing ring 113 is further provided between the gland 111 and the first end 110, and a second sealing ring 310 is sleeved and fixed on the injection branch pipe 300, and the second sealing ring 310 seals the first through hole 112. The first sealing ring 113 and the second sealing ring 310 are provided to prevent the gas injected into the ceramic filter element from being discharged from places other than the dust outlet, so that the dust blown off by the gas can only be removed from the dust outlet 121.

[0023] In one embodiment, if Figure 2 As shown, the spray branch pipe 300 enters the inner cavity of the ceramic filter element along the central axis of the ceramic filter element 100. Figure 1 As shown, the spray branch pipe 300 is fixed on the branch pipe 220 of the spray main pipe 200, and the spray branch pipe 300 and the branch pipe 220 are connected and fixed by a pipeline connector. The spray branch pipe 300 enters the inner cavity of the ceramic filter element along the central axis of the ceramic filter element 100. When the spray main pipe is connected to the compressed gas, the spray branch pipe can effectively send the compressed gas to the surface of the inner cavity of the filter element that needs to be cleaned, because the ceramic filter element is a hard material surface, which is conducive to removing the dust accumulated on the inner cavity surface, thereby improving the cleaning efficiency of the present invention.

[0024] In one embodiment, if Figure 2 As shown, the inner cavity of the ceramic filter element 100 is further provided with a spray claw 320, which is sleeved on the spray branch pipe 300, and the spray claw 320 is rotatably matched with the spray branch pipe 300. An anti-drop protrusion is provided at one end of the spray branch pipe close to the ash drop port to prevent the spray claw from falling off and failing to play the role of cleaning.

[0025] like Figure 3As shown, the blowing claw 320 includes a sleeve 321, a fan blade 322, a scraper 323 and a connecting rod 324, and the fan blade 322 can be three pieces. The fan blade 322 is fixed to the outer wall of the sleeve 321, one end of the connecting rod 324 is respectively fixed to the sleeve 321 on the upper and lower sides of the fan blade, and the other end of the connecting rod 324 is fixed to the scraper 323. The distance between the scraper 323 and the inner cavity wall of the ceramic filter element is 0.2cm-0.5cm. The scraper 323 and the connecting rod 324 are at least three groups, and the connecting rods 324 are equally fixed on the outer circumference of the sleeve. When used for cleaning, after the blowing branch blows the compressed gas into the inner cavity of the ceramic filter element, the compressed gas will form an upward airflow. When the airflow passes through the fan blade 322, it can drive the fan blade 322 to rotate, thereby driving the blowing claw 320 to rotate around the blowing branch as a whole, and the rising airflow can also make the blowing claw move upward to a certain extent. The distance between the scraper and the inner cavity wall of the ceramic filter element is 0.2cm-0.5cm. When the blowing claw rotates, the scraper will rotate with the blowing branch as the center of the circle, thereby scraping off some dust on the inner cavity surface of the ceramic filter element that cannot be removed by wind, reducing the dust accumulation rate inside the filter element, and improving the cleaning strength of the present invention.

[0026] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. A dust cleaning device for a ceramic filter element dust collector, comprising a ceramic filter element, the ceramic filter element being a hollow cylindrical structure, the ceramic filter element comprising a first end and a second end, the first end being an opening, the second end being funnel-shaped, and the second end also being provided with a dust drop opening, characterized in that: The invention comprises a blowing main pipe and a blowing branch pipe detachably mounted on the blowing main pipe, wherein a pressure cap is fixed on the first end, a first through hole is arranged on the pressure cap, and the blowing branch pipe enters the inner cavity of the ceramic filter element from the first through hole; the blowing main pipe is arranged horizontally on the upper side of the ceramic filter element, the blowing main pipe comprises a main pipe and a branch pipe, the branch pipe is fixed on the left and right sides of the main pipe, the main pipe is communicated with the inner cavity of the branch pipe, an angle is formed between the main pipe and the branch pipe, the blowing branch pipe enters the inner cavity of the ceramic filter element along the central axis of the ceramic filter element, and the blowing branch pipe blows the compressed gas into the inner cavity of the ceramic filter element After the middle, the compressed gas forms an ascending airflow; the inner cavity of the ceramic filter element is also provided with a blowing claw, the blowing claw is sleeved on the blowing branch pipe, the blowing claw and the blowing branch pipe can be rotatably matched, the blowing claw comprises a sleeve, a fan blade, a scraper and a connecting rod, the fan blade is fixed on the outer wall of the sleeve, one end of the connecting rod is respectively fixed to the sleeves on the upper and lower sides of the fan blade, and the other end of the connecting rod is fixed to the scraper; when cleaning is used, when the airflow passes through the fan blade, it drives the fan blade to rotate, thereby driving the blowing claw as a whole to rotate around the blowing branch pipe, and the rising airflow also causes the blowing claw to move upward.

2. The dust cleaning device for a ceramic filter element dust collector according to claim 1, characterized in that: The angle range is 20°-90°.

3. The dust cleaning device for a ceramic filter element dust collector according to claim 1, characterized in that: A first sealing ring is further provided between the gland and the first end, a second sealing ring is sleeved and fixed on the blowing branch pipe, and the second sealing ring seals the first through hole.

4. The dust cleaning device for a ceramic filter element dust collector according to claim 1, characterized in that: The distance between the scraper and the inner cavity wall of the ceramic filter element is 0.2 cm-0.5 cm.

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