Bag replacing mechanism of bag-type dust collector

Abstract

The utility model provides a bag replacing mechanism of a bag-type dust collector, and relates to the technical field of bag-type dust collectors. The pore plate comprises a pore plate body and a filter bag lining, the pore plate body comprises a plurality of open pores, and the open pores are used for allowing filter bags and the filter bag lining to be inserted; the filter bag lining comprises an end cover and a cage body, the end cover is arranged at one end of the cage body, and the filter bag lining is cylindrical; the end cover is in a disc shape with a through hole in the center, and an annular groove facing the cage body is formed in the end cover. The pore plate is provided with an annular boss, the annular boss is concentric with an open pore of the pore plate, a sealing ring is arranged on the inner side of the annular boss, and the sealing ring enables the annular boss and the end cover to be sealed after the filter bag lining is inserted. According to the cloth bag replacing mechanism of the cloth bag dust collector, the air tightness between the pore plate and the filter bag can be kept, and ash leakage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of bag filters, and specifically to a bag replacement structure for a bag filter. Background Art

[0002] A bag filter is also called a bag-type dust collector. A bag-type dust collector is a dry dust filtering device. A bag-type dust collector is suitable for collecting fine, dry, non-fibrous dust. A bag-type dust collector is the most widely used type among various dust collectors. The bag-type dust collector can be widely used mainly because of its high dust removal efficiency, which can meet strict environmental protection requirements, and its stable operation, strong adaptability. The gas volume that can be processed per hour ranges from several hundred cubic meters to several million cubic meters. Therefore, it can be applied to industrial and mining enterprises of various scales.

[0003] After a bag filter operates for a period of time, dust accumulation will inevitably occur at the filter bag, and the dust removal resistance will increase, so it is necessary to clean the dust accumulation in time. According to different dust cleaning methods, bag filters can be divided into mechanical vibration type, chamber reverse blowing type, nozzle reverse blowing type, pulse jet type and other types of bag filters.

[0004] Bag filters are divided into external filtration type and internal filtration type according to the way of filtering dust. For the external filtration type, dust is blocked on the outer surface of the filter bag, and for the internal filtration type bag filter, dust is blocked on the inner surface of the filter bag. The filter bag of the external filtration type bag filter generally has two annular protrusions at the neck of the open end, and the annular protrusions are stuck on the inner and outer sides of the orifice plate to achieve sealing. This way of replacing the filter bag has the problem of easy dust leakage. Summary of the Utility Model

[0005] Therefore, the utility model provides a bag replacement mechanism for a bag filter to overcome the problems existing in the above prior art.

[0006] The technical solution of the utility model is as follows:

[0007] A bag replacement mechanism for a bag filter includes an orifice plate and a filter bag liner. The orifice plate includes a plurality of openings for inserting the filter bag and the filter bag liner. The filter bag liner includes an end cap and a cage body. The end cap is arranged at one end of the cage body, and the filter bag liner is cylindrical. The end cap is a disc-shaped with a through hole in the center, and the end cap is provided with a ring groove facing the cage body. The orifice plate is provided with an annular boss concentric with the opening of the orifice plate. A sealing ring is arranged inside the annular boss, and the sealing ring forms a seal between the annular boss and the end cap after the filter bag liner is inserted.

[0008] Preferably, the thickness of the annular projection inside the annular groove of the end cap is greater than the thickness of the annular projection outside the annular groove. The annular projection inside the annular groove is connected to the cage body, and the cage body is welded using iron or steel wire. After the filter bag is installed in the orifice plate, the annular projection at the open end is located outside the orifice plate. The annular groove of the rear end cap after the filter bag liner is inserted is pressed against the exposed annular projection.

[0009] Preferably, the diameter of the opening of the orifice plate is smaller than the outer diameter of the end cap and larger than the inner diameter of the annular groove. The annular protrusion inside the annular groove of the end cap is connected to the cage body on its inner side. In this case, the two annular protrusions at the filter bag opening are clamped on the inner and outer sides of the orifice plate. The annular protrusions inside the annular groove of the orifice plate and the end cap clamp the portion of the filter bag between the two annular protrusions to achieve an airtight seal.

[0010] Preferably, the sealing ring is a rubber sealing ring having multiple annular grooves therein, and the outer surface of the sealing ring is fixed to the inner surface of the annular boss of the orifice plate by adhesive. The multiple annular grooves on the sealing ring are equivalent to providing a multiple sealing structure, which can enhance the sealing effect.

[0011] As a preference, the diameter of the opening of the orifice plate is smaller than the outer diameter of the end cover, one end of the cage body is connected to the annular groove of the end cover, the cage body is tightly attached to the annular bulge inside the annular groove of the end cover, and the outer diameter of the cage body is smaller than the diameter of the opening of the orifice plate.

[0012] The working principle and beneficial effects of the utility model are as follows:

[0013] The utility model provides a bag replacement mechanism for a dust bag collector. When in use, the filter bag is first installed on the orifice plate. The two annular protrusions at the opening of the filter bag clamp the orifice plate. Then the filter bag liner is installed. The filter bag liner clamps the filter bag and the orifice plate. A sealing ring is provided between the end cover of the filter bag liner and the orifice plate to ensure airtightness. Multiple seals are used to prevent dust leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] In the figure: 1, orifice plate; 11, opening; 12, sealing ring; 13, annular boss; 2, filter bag lining; 21, end cover. DETAILED DESCRIPTION

[0018] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0019] Please refer to Figure 1 and Figure 2 As shown in the content, this embodiment provides a bag replacement mechanism for a bag filter. The bag replacement mechanism includes an orifice plate 1 and a filter bag lining 2. The orifice plate 1 includes a plurality of openings 11 for inserting the filter bag and the filter bag lining 2. The filter bag lining 2 includes an end cap 21 and a cage body. The end cap 21 is provided at one end of the cage body, and the filter bag lining is cylindrical as a whole. The end cap 21 is a disc-shaped with a through hole in the center, and the end cap 21 is provided with an annular groove facing the cage body. An annular boss 13 is provided on the orifice plate 1. The annular boss 13 is concentric with the opening 11 of the orifice plate 1. A sealing ring 12 is provided inside the annular boss 13. After the filter bag lining 2 is inserted, the sealing ring 12 forms a seal between the annular boss 13 and the end cap 21.

[0020] Among them, the sealing ring 12 inside the annular boss 13 is preferably a rubber sealing ring. There are multiple annular grooves in the sealing ring 12, and the outer surface of the sealing ring 12 is fixed to the inner surface of the annular boss of the orifice plate by adhesive. At this time, the thickness of the annular protrusion inside the annular groove of the end cap 21 is greater than the thickness of the annular protrusion outside the annular groove. The annular protrusion inside the annular groove of the end cap 21 is connected to the cage body, and the cage body is welded by iron wire or steel wire.

[0021] In this embodiment, the diameter of the opening 11 of the orifice plate 1 is smaller than the outer diameter of the end cap 21. One end of the cage body is connected to the annular groove of the end cap 21. The cage body is in close contact with the annular protrusion inside the annular groove of the end cap 21. At the same time, the outer diameter of the cage body is smaller than the diameter of the opening 11 of the orifice plate 1.

[0022] Another preferred implementation manner is that the diameter of the opening 11 of the orifice plate 1 is smaller than the outer diameter of the end cap 21 and larger than the inner diameter of the annular groove. The annular protrusion inside the annular groove on the end cap 21 is connected to the cage body on the inner side (this implementation manner is not shown in the figure). The end cap 21 and the cage body are preferably connected by welding.

[0023] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A bag replacement mechanism for a bag filter, characterized in that: It includes an orifice plate and a filter bag liner. The orifice plate includes a plurality of openings for inserting the filter bag and the filter bag liner. The filter bag liner includes an end cap and a cage body. The end cap is arranged at one end of the cage body, and the filter bag liner is cylindrical. The end cap is in the shape of a disc with a through hole in the center, and the end cap is provided with a ring groove facing the cage body. The orifice plate is provided with an annular boss concentric with the opening of the orifice plate. A sealing ring is arranged inside the annular boss. After the filter bag liner is inserted, a seal is formed between the annular boss and the end cap.

2. The bag replacement mechanism of the bag filter according to claim 1, characterized in that: The thickness of the annular protrusion inside the ring groove of the end cap is greater than that of the annular protrusion outside the ring groove. The annular protrusion inside the ring groove is connected to the cage body, and the cage body is welded by iron wire or steel wire.

3. The bag replacement mechanism of the bag filter according to claim 2, characterized in that: The diameter of the opening of the orifice plate is smaller than the outer diameter of the end cap and larger than the inner diameter of the ring groove. The annular protrusion inside the ring groove on the end cap is connected to the cage body on the inner side surface.

4. The bag replacement mechanism of the bag filter according to claim 1, characterized in that: The sealing ring is a rubber sealing ring. There are multiple annular grooves inside the sealing ring, and the outer surface of the sealing ring is fixed on the inner surface of the annular boss of the orifice plate by means of glue.

5. The bag replacement mechanism of the bag filter according to claim 1, characterized in that: The diameter of the opening of the orifice plate is smaller than the outer diameter of the end cap. One end of the cage body is connected in the ring groove of the end cap, and the cage body is in close contact with the annular protrusion inside the ring groove of the end cap. The outer diameter of the cage body is smaller than the diameter of the opening of the orifice plate.

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