Air type high-temperature filter bag unblocking device under on-line working condition

Abstract

The utility model relates to an on-line working condition air type high temperature filter bag unblocking device which comprises an adsorption part, a channel penetrating through the adsorption part is arranged in the adsorption part, a communication hole communicated with the channel is formed in the adsorption part, and the other end of the communication hole faces towards a filter bag; gas circulates in the channel in a blockage clearing state, and a negative pressure space is formed to adsorb impurities outside the filter bag through the communicating holes. According to the utility model, the negative pressure space for generating the adsorption force on the surface of the filter bag is arranged, and the adsorption force is matched with the kinetic energy impact force of the filter bag from inside to outside, so that the stripping force applied to the impurities and used for separating the impurities from the surface of the filter bag is increased, and the impurities are separated from the surface of the filter bag.

Description

Technical Field

[0001] The utility model belongs to the technical field of filter bag cleaning, in particular to an air-type high-temperature filter bag blocking clearing device under online working conditions. Background Art

[0002] The bag-type dust collector is a gas dust removal device based on physical barrier. The circulating gas impacts the filter bag, and the filter bag can intercept impurities mixed in the gas to achieve gas removal. However, as the gas circulation accumulates, a large amount of impurities will accumulate on the filter bag and block the filter holes, affecting the passage of gas.

[0003] The existing dust removal method generally requires closing the inlet to prevent gas flow, and then using high-pressure gas to blow air from the inside to the outside to blow off impurities on the outer surface of the filter bag. Figure 1 As shown; however, this type of clearing method requires closing the inlet in advance, which affects the gas filtration efficiency, and when dealing with gases with high impurities, the inlet needs to be opened and closed more frequently.

[0004] Under online conditions, when high-pressure gas blows the filter bag from the inside to the outside, since the gas still continuously flows into the filter from the outside to the inside, the two gases form convection, the impact force of the gas kinetic energy from the inside to the outside is insufficient, and the power required for impurities to escape from the filter bag is insufficient. Utility Model Content

[0005] In view of the problems of the prior art, the utility model provides an air-type high-temperature filter bag clearing device under online working conditions. The specific technical solution is as follows:

[0006] On the one hand, the present application provides an air-type high-temperature filter bag clearing device under online working conditions, which is arranged around the outside of the filter bag and includes an adsorbent, wherein the adsorbent has a channel passing through it, and the adsorbent has a connecting hole connecting the channel, and the other end of the connecting hole faces the filter bag;

[0007] In the cleared state, gas flows inside the channel and forms a negative pressure space to absorb impurities outside the filter bag through the connecting holes.

[0008] As a further technical solution of the utility model, the channel is opened along the length of the adsorbent, and the channel is a columnar structure, and a plurality of groups of channels are opened and evenly distributed around the filter bag.

[0009] As a further technical solution of the utility model, the channel is opened spirally around the filter bag.

[0010] As a further technical solution of the utility model, the channel is annular in structure and separates the adsorbent into two ring bodies that do not contact each other.

[0011] The beneficial effects of the utility model are as follows:

[0012] (1) In the present application, a negative pressure space is provided to generate an adsorption force on the surface of the filter bag. The adsorption force cooperates with the kinetic energy impact force of the filter bag from the inside to the outside to increase the peeling force applied to the impurities to separate them from the surface of the filter bag, thereby separating the impurities from the surface of the filter bag.

[0013] (2) In the present application, by arranging an adsorbent outside the filter bag in the bag filter, a negative pressure space can be formed around the filter bag. The adsorption force cooperates with the kinetic energy impact force of the filter bag from the inside to the outside, thereby increasing the peeling force applied to the impurities to separate them from the surface of the filter bag, thereby separating the impurities from the surface of the filter bag, and enabling the bag filter to clear blockages when in working condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of a blockage clearing structure of the prior art is shown;

[0015] Figure 2 It shows a schematic diagram of the structure when the adsorption member is installed;

[0016] Figure 3 A schematic diagram of the structure of the adsorption member is shown;

[0017] Figure 4 A detailed structural diagram of the adsorption component is shown.

[0018] Legend:

[0019] 100, filter bag; 200, sealing disk; 300, adsorption element; 310, channel; 320, connecting hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0021] The present application aims to address the problem that existing clearing methods cannot be implemented under online conditions, mainly because of insufficient power required for impurities to escape from the filter bag. An adsorption component 300 that can provide adsorption force to the impurities is provided outside the filter bag. The adsorption force cooperates with the kinetic energy impact force of the filter bag from the inside to the outside, so as to separate the impurities from the surface of the filter bag.

[0022] Figure 2 It shows a schematic structural diagram of the adsorption member 300 in an installed state; Figure 3 A schematic structural diagram of an adsorption member 300 is shown; Figure 4 A detailed structural diagram of the adsorption member 300 is shown; Figure 2-Figure 4In the embodiment of the invention, the air-type high-temperature filter bag clearing device under online working condition comprises an adsorbent 300 arranged around the outside of the filter bag 100, the adsorbent 300 has a channel 310 passing through it, the adsorbent 300 has a connecting hole 320 connected to the channel 310, the other end of the connecting hole 320 faces the filter bag 100, and gas flows through the channel 310 in the clearing state and forms a negative pressure space to adsorb impurities outside the filter bag 100 through the connecting hole 320; in the clearing state, since the channel 310 is a channel with two ends passing through it, when gas flows inside it, a negative pressure space will be formed, and since one end of the connecting hole 320 is connected to the channel 310 and the other end faces the impurities outside the filter bag 100, The negative pressure space can generate an adsorption force on the impurities on the outer surface of the filter bag 100, forcing the impurities to leave the surface of the filter bag 100; in the present embodiment, the channel 310 is connected to an external air source, that is, the input end of the channel 310 is connected to the blowing channel, and the output direction of the channel 310 is toward the bag filter, but in some other embodiments, there are no other restrictions on the input and output directions of the channel 310, and the gas entry method is not limited to the blowing channel. This is not a limitation on it. The core purpose of the present application is to form a negative pressure channel outside the filter bag 100 to generate an adsorption force on the impurities; there is a gap between the adsorption element 300 and the filter bag 100 to ensure that the gas can still pass through the gap into the filter bag for filtration.

[0023] In this embodiment, if Figure 4 As shown, the channel 310 is opened along the length of the adsorbent 300, and the channel 310 is a columnar structure, and the channel 310 is opened in a plurality of groups, which are evenly distributed around the filter bag 100; by surrounding the filter bag 100 with a plurality of columnar negative pressure channels, the outer wall of the filter bag 100 can be fully cleaned to avoid dead corners; it should be noted that the columnar shape referred to here can be a cylinder, a prism, etc., without other restrictions.

[0024] In another embodiment, the channel 310 is spirally opened around the filter bag 100, which is not shown in the figure. By spirally setting the channel 310 around the filter bag 100, it can still cover the outside of the filter bag 100 to form a comprehensive clearing and blocking of the filter bag 100. There is no restriction on the number of turns of the spiral channel 310 and the cross-sectional shape of the channel 310, which can be set as needed.

[0025] In another embodiment, the channel 310 is annular in structure and separates the adsorbent 300 into two non-contacting rings which are not shown in the figure; when the gas flows in the channel 310, the annular negative pressure channel can completely cover the filter bag 100, thereby forming a comprehensive adsorption of impurities.

[0026] It should be noted that the throttling area along the gas flow direction in the channel 310 gradually decreases; since the gas still needs to overcome the pressure of the gas to be filtered when passing through the channel 310, as the channel 310 gradually approaches the gas to be filtered, the present application gradually reduces the gas flow area; thereby increasing the gas flow rate and gas kinetic energy to ensure the adsorption of impurities.

[0027] The bag-type dust collector includes a filter bag 100, a sealing disk 200 and an adsorbent 300. The adsorbent 300 surrounds the filter bag 100. The sealing disk 200 is provided with an air inlet corresponding to a channel 310. The air inlet is normally closed. The gas enters the channel 310 through the air inlet and is blown into the dust collector to carry away impurities.

[0028] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. An air-type high-temperature filter bag clearing device under online working conditions, arranged around the outside of the filter bag (100), characterized in that: The adsorption member (300) comprises a channel (310) passing through the adsorption member (300), a connecting hole (320) connected to the channel (310) is provided in the adsorption member (300), and the other end of the connecting hole (320) faces the filter bag (100); In the cleared state, gas flows inside the channel (310) to form a negative pressure space to absorb impurities outside the filter bag (100) through the connecting hole (320).

2. The air-type high-temperature filter bag clearing device under online working conditions according to claim 1 is characterized in that: The channel (310) is opened along the length of the adsorption element (300), and the channel (310) is in a columnar structure. A plurality of groups of channels (310) are opened and are evenly distributed around the filter bag (100).

3. The air-type high-temperature filter bag clearing device under online working conditions according to claim 1 is characterized in that: The channel (310) is spirally opened around the filter bag (100).

4. The air-type high-temperature filter bag clearing device under online working conditions according to claim 1 is characterized in that: The channel (310) is annular in structure and divides the adsorbent (300) into two ring bodies that are not in contact with each other.

5. The air-type high-temperature filter bag clearing device under online working conditions according to any one of claims 1 to 4, characterized in that: The throttling area in the channel (310) along the gas flow direction gradually decreases.

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