Air leakage prevention device of dust remover

Abstract

The utility model belongs to the technical field of dust removers, and particularly relates to an air leakage prevention device of a dust remover, which comprises a box body, a suction pipe and an induced draft fan are respectively and fixedly arranged on two sides of the box body, an ash bucket is fixedly arranged at the bottom of the box body, an ash outlet pipe is fixedly arranged at the bottom of the ash bucket, and a connecting ring is fixedly arranged outside the ash outlet pipe. The utility model discloses an anti-air leakage structure, the bottom of connecting ring is equipped with two slot, one side inner wall of slot is equipped with the arc groove, through setting up protective cover, sealing pad, mounting plate and valve, after the anti-air leakage structure is installed, the inside sealing pad fits with the bottom end of ash discharge pipe, and the anti-air leakage structure is equipped with the anti-air leakage structure, and the anti-air leakage structure is equipped with the anti-air leakage structure and the anti-air leakage structure is equipped with the anti-air leakage structure and the anti-air leakage structure. The sealing performance of the connecting position can be improved, the air leakage amount of equipment can be reduced, the turning plate of the valve is closed during the period of not discharging ash, the air leakage condition of the equipment during the smoke dust suction period can be prevented, the suction efficiency of the equipment can be improved, the energy consumption of an induced draft fan can be reduced, and meanwhile the calculation error of the oxygen content of discharged smoke can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collectors, in particular to an air leakage prevention device for a dust collector. Background Art

[0002] A thermal power plant refers to a thermal power plant that uses the extraction steam or exhaust steam of a steam turbine to supply heat to users while generating electricity. A bag filter is installed in the thermal power plant to remove flue gas and dust. The bag filter is suitable for collecting fine, dry, and non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt, and the fibrous fabric is used to filter the dust-containing gas. When the dust-containing gas enters the bag filter, dust with large particles and high specific gravity settles down due to the action of gravity and falls into the ash hopper. When the gas containing finer dust passes through the filter bag, the dust is retained, and the gas is purified.

[0003] However, the bottom of the existing dust discharge pipe of the dust collector does not have an air leakage prevention structure. The large air leakage of the equipment will increase the energy consumption of the induced draft fan and increase the oxygen content of the flue gas discharged from the bag filter. Therefore, an air leakage prevention device for a dust collector is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies in the prior art and propose an air leakage prevention device for a dust collector.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: An air leakage prevention device for a dust collector includes a box body. Suction pipes and induced draft fans are respectively and fixedly arranged on both sides of the box body. An ash hopper is fixedly arranged at the bottom of the box body. An ash discharge pipe is fixedly arranged at the bottom of the ash hopper. A connecting ring is fixedly arranged on the outer part of the ash discharge pipe. An air leakage prevention structure is arranged at the bottom of the connecting ring.

[0006] As a further description of the above technical scheme:

[0007] Two slots are arranged at the bottom of the connecting ring. An arc-shaped groove is arranged on the inner wall of one side of the slot. A positioning hole is arranged on the arc-shaped groove.

[0008] As a further description of the above technical scheme:

[0009] The air leakage prevention structure includes a protective sleeve clamped with the connecting ring. A valve is fixedly arranged at the bottom of the protective sleeve. A mounting plate is fixedly arranged inside the protective sleeve. A sealing gasket is arranged on the top of the mounting plate. The sealing gasket is in fit with the bottom end of the ash discharge pipe. Two insertion plates are fixedly arranged at the top of the protective sleeve. The insertion plates are adapted to the slots.

[0010] As a further description of the above technical scheme:

[0011] One side of the plug board is provided with a storage hole, a spring is fixedly arranged in the storage hole, one end of the spring is fixedly provided with a guide plate, the guide plate is movably connected with the storage hole, one side of the guide plate is fixedly provided with a positioning rod, and the positioning rod is adapted to a positioning hole.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the storage hole is provided with a limiting groove, two limiting blocks are fixedly arranged outside the guide plate, and the limiting groove is movably connected with the limiting blocks.

[0014] As a further description of the above technical solution:

[0015] Four support legs arranged in a rectangle are fixedly arranged at the bottom of the box body, and a corrosion-resistant layer is coated on the surface of the box body.

[0016] The utility model has the following beneficial effects:

[0017] 1. Compared with the prior art, for the air leakage prevention device of this dust collector, by setting a protective sleeve, a sealing gasket, a mounting plate and a valve, after the air leakage prevention structure is installed, the sealing gasket inside is attached to the bottom end of the ash discharge pipe, which can improve the sealing performance of the connection, reduce the air leakage amount of the equipment. During the period when there is no ash discharge, the flap of the valve is closed, which can prevent air leakage during the period when the equipment sucks in smoke and dust, improve the suction efficiency of the equipment, reduce the energy consumption of the induced draft fan, and at the same time can also reduce the calculation error of the oxygen content in the discharged flue gas.

[0018] 2. Compared with the prior art, for the air leakage prevention device of this dust collector, by setting a connecting ring, a plug board, a storage hole, a spring, a guide plate and a positioning rod, during installation, the two positioning rods are simultaneously squeezed inward, and then the protective sleeve is pushed upward, so that the two plug boards are inserted into the two slots. The plug board drives the positioning rod to move. When the positioning rod moves to the position of the positioning hole, the spring pushes the positioning rod outward, making it pop out from the positioning hole, realizing the installation of the air leakage prevention structure. When it is necessary to disassemble the air leakage prevention structure to replace or maintain the internal components, the positioning rod is squeezed inward. When one end of the positioning rod retracts into the arc-shaped groove, pulling the protective sleeve downward can realize the disassembly of the air leakage prevention structure, which is convenient for subsequent maintenance of the internal components by relevant personnel. Description of the Drawings

[0019] Figure 1 It is a three-dimensional structural schematic diagram of an air leakage prevention device of a dust collector proposed by the utility model;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of a connecting ring in an air leakage prevention device of a dust collector proposed by the utility model;

[0021] Figure 3Schematic three-dimensional view of the air leakage prevention structure in an air leakage prevention device of a dust collector proposed by the present utility model;

[0022] Figure 4 Enlarged structural view of part A in an air leakage prevention device of a dust collector proposed by the present utility model.

[0023] Legend description:

[0024] 1. Box body; 2. Suction pipe; 3. Induced draft fan; 4. Ash hopper; 5. Ash discharge pipe; 6. Connecting ring; 7. Slot; 8. Arc-shaped groove; 9. Positioning hole; 10. Air leakage prevention structure; 101. Protective sleeve; 102. Valve; 103. Mounting plate; 104. Sealing gasket; 105. Plug plate; 106. Storage hole; 107. Spring; 108. Guide plate; 109. Positioning rod. Specific implementation manner

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. 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 creative efforts shall fall within the protection scope of the present utility model.

[0026] Refer to Figures 1 to 4 , an air leakage prevention device of a dust collector provided by the present utility model: includes a box body 1, four support legs arranged in a rectangle are fixedly provided at the bottom of the box body 1, a corrosion-resistant layer is coated on the surface of the box body 1, a suction pipe 2 and an induced draft fan 3 are respectively fixedly provided on both sides of the box body 1, an ash hopper 4 is fixedly provided at the bottom of the box body 1, an ash discharge pipe 5 is fixedly provided at the bottom of the ash hopper 4, a connecting ring 6 is fixedly provided outside the ash discharge pipe 5, two slots 7 are provided at the bottom of the connecting ring 6, an arc-shaped groove 8 is provided on the inner wall of one side of the slot 7, and a positioning hole 9 is provided on the arc-shaped groove 8;

[0027] Refer to Figure 3 , in order to achieve the purpose of preventing air leakage, an air leakage prevention structure 10 is provided at the bottom of the connecting ring 6. The air leakage prevention structure 10 includes a protective sleeve 101 clamped with the connecting ring 6. A valve 102 is fixedly provided at the bottom of the protective sleeve 101. A mounting plate 103 is fixedly provided inside the protective sleeve 101. A sealing gasket 104 is provided on the top of the mounting plate 103. The sealing gasket 104 is in contact with the bottom end of the ash discharge pipe 5. After the air leakage prevention structure 10 is installed, the sealing gasket 104 inside is in contact with the bottom end of the ash discharge pipe 5, which can improve the sealing performance of the connection, reduce the air leakage amount of the device. During the period when ash is not discharged, the flap of the valve 102 is closed, which can prevent air leakage during the period when the device sucks in dust, improve the suction efficiency of the device, reduce the energy consumption of the induced draft fan 3, and at the same time can also reduce the calculation error of the oxygen content in the discharged flue gas;

[0028] Reference Figure 4 Figure 4 , for the purpose of achieving quick disassembly and assembly, two insertion plates 105 are fixedly provided at the top of the protective sleeve 101. The insertion plates 105 are adapted to the slots 7. A storage hole 106 is provided on one side of the insertion plate 105. A spring 107 is fixedly provided in the storage hole 106. One end of the spring 107 is fixedly provided with a guide plate 108. The guide plate 108 is movably connected to the storage hole 106. A limiting groove is provided on the inner wall of the storage hole 106. Two limiting blocks are fixedly provided outside the guide plate 108. The limiting groove and the limiting block are movably connected. The cooperation of the limiting groove and the limiting block can achieve the limitation of the guide plate 108. A positioning rod 109 is fixedly provided on one side of the guide plate 108. The positioning rod 109 is adapted to the positioning hole 9. During installation, the two positioning rods 109 are simultaneously pressed inward, and then the protective sleeve 101 is pushed upward, so that the two insertion plates 105 are inserted into the two slots 7. The insertion plate 105 drives the positioning rod 109 to move. When the positioning rod 109 moves to the position of the positioning hole 9, the spring 107 pushes the positioning rod 109 outward, so that it pops out from the positioning hole 9, realizing the installation of the air leakage prevention structure 10. During disassembly, the positioning rod 109 is pressed inward. When one end of the positioning rod 109 retracts into the arc-shaped groove 8, the protective sleeve 101 can be pulled downward to realize the disassembly of the air leakage prevention structure 10. The air leakage prevention structure 10 that can be quickly disassembled and repaired can facilitate the subsequent maintenance of internal components by relevant personnel.

[0029] Working principle: Before the equipment runs, first install the air leakage prevention structure 10 at the bottom of the connection ring 6, put the protective sleeve 101 on the outside of the ash discharge pipe 5, and then simultaneously press the two positioning rods 109 inward. The positioning rod 109 presses the guide plate 108, and the guide plate 108 then presses the spring 107. When the positioning rod 109 completely retracts into the storage hole 106, then push the protective sleeve 101 upward, so that the two insertion plates 105 are inserted into the two slots 7. The insertion plate 105 drives the positioning rod 109 to move. When the bottom end of the ash discharge pipe 5 is in contact with the sealing gasket 104, the positioning rod 109 moves to the position of the positioning hole 9, and the spring 107 pushes the positioning rod 109 outward, so that it pops out from the positioning hole 9, realizing the installation of the air leakage prevention structure 10. The setting of the sealing gasket 104 can improve the sealing performance at the connection with the ash discharge pipe 5 and reduce the air leakage of the equipment. During the period when the ash is not discharged, the flap of the valve 102 is closed, which can prevent air leakage during the period when the equipment sucks in dust, improve the suction efficiency of the equipment, and reduce the energy consumption of the induced draft fan 3. When it is necessary to disassemble the air leakage prevention structure 10 to replace or maintain the internal components, press the positioning rod 109 inward. When one end of the positioning rod 109 retracts into the arc-shaped groove 8, the protective sleeve 101 can be pulled downward to realize the disassembly of the air leakage prevention structure 10, which is convenient for subsequent relevant personnel to maintain the internal components.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for preventing air leakage of a dust collector, comprising a housing (1), characterized in that: A suction pipe (2) and an induced draft fan (3) are fixedly provided on both sides of the box body (1), an ash hopper (4) is fixedly provided at the bottom of the box body (1), an ash outlet pipe (5) is fixedly provided at the bottom of the ash hopper (4), a connecting ring (6) is fixedly provided on the outside of the ash outlet pipe (5), and an air leakage prevention structure (10) is provided at the bottom of the connecting ring (6); two slots (7) are provided at the bottom of the connecting ring (6), an arc-shaped groove (8) is provided on the inner wall of one side of the slot (7), and a positioning hole (9) is provided on the arc-shaped groove (8). The air leakage prevention structure (10) comprises a protective sleeve (101) that is clamped with the connecting ring (6); a valve (102) is fixedly provided at the bottom of the protective sleeve (101); a mounting plate (103) is fixedly provided inside the protective sleeve (101); a sealing gasket (104) is provided at the top of the mounting plate (103); the sealing gasket (104) is fitted with the bottom end of the ash outlet pipe (5); and two plug plates (105) are fixedly provided at the top of the protective sleeve (101); the plug plates (105) are adapted to fit the slots (7).

2. The anti-air leakage device for a dust collector according to claim 1, characterized in that: A storage hole (106) is provided on one side of the plug plate (105), a spring (107) is fixedly provided in the storage hole (106), a guide plate (108) is fixedly provided at one end of the spring (107), the guide plate (108) and the storage hole (106) are movably connected, a positioning rod (109) is fixedly provided on one side of the guide plate (108), and the positioning rod (109) and the positioning hole (9) are matched.

3. The anti-air leakage device for a dust collector according to claim 2, characterized in that: The inner wall of the receiving hole (106) is provided with a limiting groove, and the outside of the guide plate (108) is fixedly provided with two limiting blocks, and the limiting groove and the limiting blocks are movably connected.

4. The anti-air leakage device for a dust collector according to claim 1, characterized in that: Four supporting legs arranged in a rectangular shape are fixedly provided at the bottom of the box body (1), and a corrosion-resistant layer is coated on the surface of the box body (1).

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