Bypass system for bag-type dust collector

Abstract

The utility model discloses a bypass system for a bag-type dust collector, which structurally comprises a bypass channel used for being communicated with a smoke inlet channel of the bag-type dust collector, a bypass valve is arranged on the bypass channel, an air inlet is arranged on the bypass channel, an air inlet pipeline is communicated with the air inlet, the air inlet is positioned inside the bypass valve, and the bypass valve is arranged on the bypass channel. The bypass valve comprises an upper valve plate, a lower valve plate and a valve rod, the upper valve plate and the lower valve plate are symmetrically sealed in the bypass channel, the air inlet is located between the upper valve plate and the lower valve plate, the upper valve plate and the lower valve plate are connected with a connecting plate, the connecting plate is located on the outer side of the bypass channel, and the valve rod is perpendicularly connected to the connecting plate. The sealing performance of the bypass system is improved, and dust is prevented from overflowing from the bypass system.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, in particular to a bypass system for a bag dust collector. Background Art

[0002] Nowadays, bag dust collectors are widely used in cement, steel, electric power and other industries, and the bypass system plays a vital role in protecting bag dust collectors. During normal operation, the bypass system also needs to be protected, so as to protect the bag dust collector at critical moments.

[0003] During the use of bag dust collectors, the bypass system generally uses valves to achieve the purpose of closing the bypass system. However, in the actual use of the bypass system, it is difficult for general valves to completely close the bypass system. In addition, as the valve is used, the flue gas will gradually corrode the valve, thereby further reducing the valve's closing performance, causing dust to overflow from the bypass system and reducing the dust removal efficiency of the bag dust collector. Utility Model Content

[0004] The purpose of the utility model is to provide a bypass system for a bag filter to solve one or more of the above-mentioned problems in the prior art.

[0005] In order to solve the above technical problems, the utility model provides a bypass system for a bag dust collector, whose structure includes a bypass channel used to communicate with the smoke inlet channel of the bag dust collector, and a bypass valve is provided on the bypass channel. The utility model's innovation lies in: an air inlet is opened on the bypass channel, the air inlet is connected to an air inlet pipe, and the air inlet is located inside the bypass valve.

[0006] Furthermore, the above-mentioned bypass valve includes an upper valve plate, a lower valve plate and a valve stem, the upper valve plate and the lower valve plate are symmetrically enclosed inside the bypass channel, the air inlet is located between the upper valve plate and the lower valve plate, the upper valve plate and the lower valve plate are connected with a connecting plate, the connecting plate is located on the outside of the bypass channel, and the valve stem is vertically connected to the connecting plate.

[0007] Furthermore, the joints between the upper valve plate, the lower valve plate and the bypass channel are all coated with sealant.

[0008] The beneficial effect of the utility model is that the utility model provides a bypass system for a bag dust collector. During the use of the bag dust collector, air is continuously blown into the inside of the bypass valve, and the incomplete sealing of the bypass valve is utilized to make the air flow flow to the inside of the smoke inlet channel and the bypass channel respectively. This flow of air isolates the smoke inside the smoke inlet channel from flowing toward the inside of the bypass channel, thereby improving the sealing of the bypass channel and effectively preventing dust from overflowing from the bypass system. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is the front view of the utility model.

[0010] Figure 2 The utility model is a side view of the connection between a bypass valve and a bypass channel. DETAILED DESCRIPTION

[0011] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0012] In the prior art, a bag filter is provided with a bypass system to protect the bag filter. The bypass system is generally connected to the inlet and outlet flues of the bag filter. Therefore, during the use of the bag filter, there are high requirements for the sealing performance of the bypass system.

[0013] like Figure 1 to Figure 2 This is a specific implementation of the utility model, and its structure includes a bypass channel 1 for connecting with the smoke inlet channel 101 of the bag filter, a bypass valve 2 is provided on the bypass channel 1, an air inlet 3 is opened on the bypass channel 1, the air inlet 3 is connected to the air inlet pipe 4, and the air inlet 3 is located inside the bypass valve 2.

[0014] In the present invention, in order to improve the sealing performance of the bypass channel 1, while the bypass valve 2 seals the bypass channel 1, air is continuously blown toward the air inlet pipe 4 through an external fan, and the airflow enters the interior of the bypass valve 2 through the air inlet 3. When the bypass valve 2 seals the bypass channel 1, in theory, the bypass channel 1 cannot be completely sealed. In particular, as the bypass valve 2 is used, the bypass valve 2 will be corroded by the flue gas, and the sealing performance of the bypass valve 2 will gradually decrease. By utilizing the incomplete sealing performance of the bypass valve 2, a part of the airflow entering the interior of the bypass valve 2 flows toward the direction of the smoke inlet channel 101, and the other part of the airflow flows toward the interior of the bypass channel 1. During the use of the bag filter, the external fan is continuously turned on so that the airflow blown by the fan flows in the above-mentioned direction. The flow of this airflow isolates the smoke inside the smoke inlet channel 101 from flowing toward the interior of the bypass channel 1, thereby improving the sealing performance of the bypass channel 1.

[0015] In the present utility model, in order to specifically illustrate the specific structure of the bypass valve 2, the bypass valve 2 includes an upper valve plate 21, a lower valve plate 22 and a valve stem 23. The upper valve plate 21 and the lower valve plate 22 are symmetrically enclosed inside the bypass channel 1. The air inlet 3 is located between the upper valve plate 21 and the lower valve plate 22. The upper valve plate 21 and the lower valve plate 22 are connected with a connecting plate 24. The connecting plate 24 is located outside the bypass channel 1. The valve stem 23 is vertically connected to the connecting plate 24. Under the drive of external power, such as a cylinder or a driving motor, the external power drives the valve stem 23 to move up and down, thereby driving The upper valve plate 21 and the lower valve plate 22 move up and down. When used in a bag dust collector, the external power drives the valve stem 23 to move downward, and the upper valve plate 21 and the lower valve plate 22 seal the bypass channel 1. The upper and lower valve plates ensure the sealing of the bypass channel 1. After the upper valve plate 21 and the lower valve plate 22 seal the bypass channel 1, the airflow blown by the external fan flows between the upper valve plate 21 and the lower valve plate 22 through the air inlet 3. Part of the airflow flows through the lower valve plate 22 to the inside of the smoke inlet channel 101, and the other part of the airflow flows through the upper valve plate 21 to the inside of the bypass channel 1.

[0016] In the present invention, the joints between the upper valve plate 21 , the lower valve plate 22 and the bypass channel 1 are coated with sealant 5 , which further improves the sealing performance of the upper valve plate 21 , the lower valve plate 22 to the bypass channel 1 .

[0017] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A bypass system for a bag filter, comprising a bypass channel (1) for communicating with a smoke inlet channel (101) of the bag filter, wherein a bypass valve (2) is provided on the bypass channel (1), and characterized in that: The bypass channel (1) is provided with an air inlet (3), the air inlet (3) is connected to an air inlet pipeline (4), and the air inlet (3) is located inside the bypass valve (2).

2. A bypass system for a bag filter according to claim 1, characterized in that: The bypass valve (2) comprises an upper valve plate (21), a lower valve plate (22) and a valve stem (23); the upper valve plate (21) and the lower valve plate (22) are symmetrically enclosed inside the bypass channel (1); the air inlet (3) is located between the upper valve plate (21) and the lower valve plate (22); the upper valve plate (21) and the lower valve plate (22) are connected by a connecting plate (24); the connecting plate (24) is located outside the bypass channel (1); and the valve stem (23) is vertically connected to the connecting plate (24).

3. A bypass system for a bag filter according to claim 2, characterized in that: The joints between the upper valve plate (21), the lower valve plate (22) and the bypass channel (1) are all coated with sealant (5).

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