A top cover for energy-saving bag dust collector

Abstract

The utility model provides a top cover for an energy-saving bag dust collector, comprising: an inner cavity of a structure provided with a heat-insulating material; a maintenance mechanism, which is arranged above the heat-insulating mechanism, and the maintenance mechanism comprises an outer guard plate arranged on the side and a support rod arranged at the middle position of the top of the dust collector; wherein an outer maintenance door is arranged on the upper opening formed by the outer guard plate and the support rod. The top cover for an energy-saving bag dust collector has a simple structure and excellent heat-insulating performance, which effectively reduces the operating temperature of the flue gas of the bag dust collector and slows down the dew point corrosion of the top cover of the dust collector.

Description

Technical Field

[0001] The utility model belongs to the technical field of environmental protection machinery and relates to a top cover for an energy-saving bag-type dust collector. Background Art

[0002] Bag dust collectors are widely used in the purification of dust-laden gases due to their high dust collection efficiency and easy maintenance. They are the main equipment in the dust removal industry. As one of the important components of bag dust collectors, the bag dust collector cover has the following important functions:

[0003] 1. It can be used as a walking platform for top maintenance personnel;

[0004] 2. Equipped with an inspection door, it can provide an inspection channel for inspecting the internal components of the dust collector;

[0005] 3. It can keep the high-temperature flue gas inside the bag filter warm.

[0006] However, the sealing of the inspection door on the top cover of the bag filter adopts the sealing technology of pressure plate + inspection door + sealing gasket. Due to the small space of the structure, it is impossible to lay insulation materials.

[0007] In the prior art,

[0008] The utility model patent with the authorization announcement number CN 214597825 U provides a sealing technology, but lacks an insulation layer, and water will accumulate in the groove of the groove steel, which will cause the flue gas on the top cover of the bag filter to cool down and cause dew point corrosion;

[0009] The utility model patent with the authorization announcement number CN201537436U provides a sealing technology of bolt + pressure plate + gasket. This technology can theoretically achieve a sealing effect. However, in actual projects, local leakage often occurs due to deformation of the pressure plate, deformation of the dust collector housing, uneven thickness of the gasket, and large negative pressure inside the bag filter. In addition, the lack of insulation on the bottom plate will also cause the flue gas to cool down and cause dew point corrosion. The above problems will cause the bag filter cover to need maintenance soon after it is put into operation, and in serious cases, the bag filter will be shut down.

[0010] In order to solve the problems of air leakage at the top of the dust collector and corrosion caused by lack of insulation, the utility model patent with authorization announcement number CN210728936U adds a steam heating system to the top cover of the bag dust collector. Theoretically, it can work, but the steam energy consumption is very high.

[0011] In summary, in order to solve the structural deficiencies of the bag dust collector in the prior art, the utility model relates to a bag dust collector with simple structure and excellent thermal insulation performance, which effectively reduces the operating temperature of the flue gas in the bag dust collector and slows down the dew point corrosion of the dust collector top cover. Summary of the invention

[0012] The utility model solves the problems existing in the prior art and provides a bag filter with simple structure and excellent heat preservation performance, which effectively reduces the flue gas operating temperature of the bag filter and slows down the dew point corrosion of the top cover of the filter.

[0013] The purpose of the utility model can be achieved through the following technical solutions:

[0014] A top cover for an energy-saving bag dust collector, comprising:

[0015] A heat-insulating mechanism, which is detachably fixed to the top of the bag filter, and an inner cavity of the heat-insulating mechanism is provided with heat-insulating material;

[0016] An inspection mechanism is arranged above the heat preservation mechanism, and includes an outer guard plate arranged on the side and a support rod arranged at the middle position of the top of the dust collector;

[0017] Among them, an external inspection door is arranged on the upper opening formed by the outer guard plate and the support rod.

[0018] As a further improvement, a U-shaped support portion is provided at the free end of the support rod.

[0019] As a further improvement, a sealing gasket is provided at the end of the U-shaped support portion.

[0020] As a further improvement, the external inspection door is in an inverted U shape, and a sealing gasket is provided at the free end of the outer guard plate.

[0021] As a further improvement, the insulation mechanism includes a accommodating chamber and a cover plate, which is arranged on the opening of the accommodating chamber. Insulating material is arranged in the accommodating chamber. The insulation mechanism is detachably fixed to the bag dust collector through an extension of the side wall of the accommodating chamber.

[0022] As a further improvement, the heat preservation mechanism is detachably fixed to the bag filter by bolts.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1) The top cover structure of this energy-saving bag filter is reasonably set. A closed cavity is formed by the insulation mechanism, inner guard plate, outer guard plate, and outer inspection door. The air in the cavity is closed and cannot flow, thus forming an air insulation layer. The thermal conductivity of the insulation rock surface is about 0.044W / (mK), and the thermal conductivity of air is about 0.024W / (mK). The thermal conductivity is about 50% of the insulation rock wool, which greatly improves the insulation performance;

[0025] 2) The flange-type thermal insulation inspection door is connected to the dust collector body with a certain number of bolts. The number of bolts is calculated based on the pressure difference between the inside and outside of the bag dust collector. The connection mode of bolts + flange + sealing gasket can ensure zero leakage, solving the problem of air leakage in the inspection door;

[0026] 3) Furthermore, the staggered arrangement of flange-type insulated inspection doors can effectively reduce the floor space of the bag filter and save materials. The small heat transfer coefficient of air is utilized to add air layer insulation, saving materials. Due to its excellent thermal insulation performance, the flue gas operating temperature of the bag filter can be appropriately reduced, saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The utility model is a schematic diagram of a top cover structure for an energy-saving bag-type dust collector.

[0028] Figure 2 The utility model is a top view of a top cover for an energy-saving bag-type dust collector.

[0029] Figure 3 It is a schematic diagram of the heat preservation mechanism of the utility model.

[0030] Figure 4 It is a top view of the heat preservation mechanism of the utility model.

[0031] Figure 5 yes Figure 1 A partial enlarged view of part A in the middle.

[0032] Figure 6 yes Figure 1 A partial enlarged view of part B in the middle. DETAILED DESCRIPTION

[0033] The technical solution of the utility model is further described below in conjunction with the embodiments and drawings.

[0034] As shown in the figure, the top cover for the energy-saving bag dust collector includes:

[0035] A heat preservation mechanism 10, which is detachably fixed to the top of the bag filter, and an inner cavity of the heat preservation mechanism 10 is provided with heat preservation material;

[0036] An inspection mechanism 20, which is arranged above the heat preservation mechanism 10, and includes an outer guard plate 21 arranged on the side and a support rod 22 arranged at the middle position of the top of the dust collector;

[0037] An external inspection door 23 is provided on the upper opening formed by the outer guard plate 21 and the support rod 22 .

[0038] In the prior art, the sealing of the inspection door on the top cover of the bag dust collector adopts the sealing technology of pressure plate + inspection door + sealing gasket. Due to the small space of the structure, it is impossible to lay insulation materials; furthermore, the top cover of the bag dust collector needs maintenance soon after it is put into operation. In summary, the prior art cannot take into account the above two points: both insulation and convenient maintenance.

[0039] To this end, the utility model designs an energy-saving top cover for bag dust collector. The insulation material in the insulation mechanism 10 has excellent insulation performance, which effectively reduces the operating temperature of the flue gas in the bag dust collector. At the same time, an inspection mechanism 20 is provided above the insulation mechanism 10. The support rod 22, the outer protective plate 21, and the outer inspection door 23 together form a sealing structure above the insulation mechanism 10, which can not only further achieve the insulation effect, but also effectively reduce the risk of dew point corrosion of the dust collector top cover.

[0040] Specifically, when maintenance is needed, it is only necessary to open the external maintenance door 23 to perform maintenance on the heat preservation mechanism 10 and the dust collector.

[0041] As a further preferred embodiment, the insulation mechanism 10 includes a accommodating chamber 11 and a cover plate 12, wherein the cover plate 12 is arranged on the opening of the accommodating chamber 11, and insulation material is arranged in the accommodating chamber 11. The insulation mechanism 10 is detachably fixed to the bag dust collector through an extension portion of the side wall of the accommodating chamber.

[0042] As a further preferred embodiment, the heat preservation mechanism 10 is detachably fixed to the bag filter by bolts 50 .

[0043] In the above embodiment, the bag filter is initially sealed by the setting of the heat preservation mechanism 10, the heat preservation material in the chamber is heat preservation rock wool, the thermal conductivity of the heat preservation rock surface is about 0.044W / (mK), and the heat preservation effect is good. Furthermore, the detachable fixing method makes the later maintenance process convenient to operate.

[0044] As a further preferred embodiment, a U-shaped supporting portion 221 is provided at the free end of the supporting rod 22 .

[0045] As a further preferred embodiment, a sealing gasket 30 is provided at the end of the U-shaped supporting portion 221 .

[0046] As a further preferred embodiment, the outer inspection door 23 is in an inverted U-shape, and a sealing gasket 30 is provided at the free end of the outer guard plate 21 .

[0047] Furthermore, the cavities between adjacent insulation mechanisms 10 are filled with insulation materials. In addition to being filled with insulation materials, the cavity between the side insulation mechanism 10 and the outer protective plate 21 is also provided with an inner protective plate 40 above the insulation material. The inner protective plate 40 is used for maintenance personnel to step on when performing maintenance after opening the outer inspection door 23.

[0048] The top cover structure of the energy-saving bag filter is reasonably arranged. A closed cavity is formed by the insulation mechanism 10, the inner protective plate 40, the outer protective plate 21, and the outer inspection door 23. The air in the cavity is closed and cannot flow, thus forming an air insulation layer. The thermal conductivity of the insulation rock surface is about 0.044W / (mK), the thermal conductivity of the air is about 0.024W / (mK), and the thermal conductivity is about 50% of the insulation rock wool, which greatly improves the insulation performance.

[0049] The flange-type insulated inspection door is connected to the dust collector body with a certain number of bolts. The number of bolts is calculated based on the pressure difference between the inside and outside of the bag dust collector. The connection mode of bolts + flange + sealing gasket can ensure zero leakage, solving the problem of air leakage in the inspection door. Furthermore, the flange-type insulated inspection doors are arranged in high and low positions, which can effectively reduce the floor space of the bag dust collector and save materials. The small heat transfer coefficient of air is utilized to add an air layer for insulation, saving materials. Due to its excellent thermal insulation performance, the flue gas operating temperature of the bag dust collector can be appropriately reduced, saving energy.

[0050] The preferred embodiments of the present invention are described herein, but the protection scope of the present invention is not limited thereto. Any modification or supplement or replacement of the specific embodiments described by technicians in the field of the present invention shall be included in the protection scope of the present invention.

Claims

1. A top cover for an energy-saving bag dust collector, characterized in that: include: A heat-insulating mechanism (10), the heat-insulating mechanism (10) being detachably fixed to the top of the bag filter, and the inner cavity of the heat-insulating mechanism (10) being provided with heat-insulating material; An inspection mechanism (20), the inspection mechanism (20) being arranged above the heat preservation mechanism (10), the inspection mechanism (20) comprising an outer guard plate (21) arranged on the side and a support rod (22) arranged at the middle position of the top of the dust collector; An external inspection door (23) is provided on the upper opening formed by the outer guard plate (21) and the support rod (22).

2. The energy-saving bag dust collector top cover according to claim 1, characterized in that: A U-shaped support portion (221) is provided at the free end of the support rod (22).

3. The top cover for an energy-saving bag dust collector according to claim 2, characterized in that: A sealing gasket (30) is provided at the end of the U-shaped support portion (221).

4. The top cover for an energy-saving bag dust collector according to claim 3, characterized in that: The external inspection door (23) is in an inverted U shape, and a sealing gasket (30) is provided at the free end of the external guard plate (21).

5. The top cover for an energy-saving bag dust collector according to claim 3, characterized in that: The heat preservation mechanism (10) comprises a containing chamber (11) and a cover plate (12). The cover plate (12) is arranged on the opening of the containing chamber (11). Heat preservation material is arranged in the containing chamber (11). The heat preservation mechanism (10) is detachably fixed to the bag filter through an extension of the side wall of the containing chamber.

6. The energy-saving bag dust collector top cover according to claim 3, characterized in that: The heat preservation mechanism (10) is detachably fixed to the bag dust collector via bolts (50).

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