Constant-temperature bag-type dust collector capable of preventing bag from being burnt due to condensation

Abstract

The utility model discloses a constant temperature type bag-type dust collector capable of preventing condensation and bag pasting, which relates to the field of bag-type dust collectors and comprises a box body, an air inlet and an air outlet pipe are arranged on the box body, an ash bucket is connected to the bottom of the box body, a plurality of filter bags are arranged in the box body in an array manner, filter bag openings of the filter bags are connected with the air outlet pipe through exhaust pipes, and a heating groove is formed in the outer wall of the ash bucket. An electric heating pipe is arranged in the heating groove, a cover body for sealing the heating groove is arranged on the heating groove, one side of the cover body is hinged with one side of the heating groove, extension plates are arranged on two sides of the other side of the cover body, and the extension plates are fixed on the outer wall of the ash bucket through a locking device. After the dust remover is shut down, the electric heating pipe is used for heating to keep a constant-temperature state, the phenomenon that a bag is burnt due to condensation is prevented, meanwhile, maintenance is convenient, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the field of bag filters, in particular to an anti-condensation and paste bag constant temperature bag filter. Background Art

[0002] A bag filter is a dry dust filtering device, suitable for collecting fine, dry and non-fibrous dust. Its working principle is: after the dust-containing gas enters the bag filter, by the interception of the filter bag, the dust is retained outside the filter bag and settles into the ash hopper under the action of gravity, while the filtered air flow is discharged through the air outlet at the top of the filter bag.

[0003] The existing bag filters generally work intermittently. When the machine stops, the internal environment temperature of the dust collector will decrease. Since the high-temperature flue gas contains a certain amount of moisture, after the machine stops, the high-temperature flue gas remaining inside the dust collector will cool down below the dew point, resulting in condensation on the surface of the filter bag, and failures such as corrosion and paste bag will occur, seriously shortening the service life of the filter bag and affecting the normal operation of the dust collector. At the same time, when the dust collector stops for a period of time and then starts up, when the high-temperature flue gas suddenly enters the low-temperature environment, it will also cause the phenomenon of condensation and paste bag, thereby causing damage to the filter bag and a decrease in the dust removal effect.

[0004] The existing technology generally adopts the method of heating the dust collector to keep the internal temperature of the dust collector constant, so as to avoid the occurrence of condensation and paste bag phenomenon. For example, the patent No. 201410684270.9 discloses a protection system for a bag filter, which includes a circulation pipeline. The inlet end of the circulation pipeline is connected to the upper air box, the outlet end of the circulation pipeline is connected to the inlet air box, a fan is arranged on the circulation pipeline, the inlet of the fan is connected to a section of the circulation pipeline connected to the upper air box, the outlet of the fan is connected to a section of the circulation pipeline connected to the inlet air box, a temperature measuring instrument and an electric heater are connected to the circulation pipeline connected to the outlet of the fan, and the temperature measuring instrument is arranged on the circulation pipeline between the fan and the electric heater.

[0005] The above existing technology adopts the method of hot air heating, which has high energy consumption, is not convenient for maintenance, and it only works before the dust collector starts up, and cannot guarantee the anti-condensation effect of the internal gas cooling of the dust collector in the shutdown state. If the hot air is continuously blown to work in the shutdown state, the energy consumption is too high, and the hot air continuously discharges from the air outlet, causing heat energy loss. Summary of the Invention

[0006] The purpose of the utility model is to overcome the above-mentioned deficiencies in technology, and provide an anti-condensation and paste bag constant temperature bag filter, which can keep the temperature constant by using an electric heating tube to heat the dust collector after it stops, prevent the occurrence of condensation and paste bag phenomenon, and is convenient for maintenance and reduces energy consumption at the same time.

[0007] To achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model is as follows:

[0008] An anti-condensation paste bag constant temperature bag filter, comprising a box body, an air inlet and an air outlet pipe are arranged on the box body, a hopper is connected to the bottom of the box body, a plurality of filter bags are arranged in the box body in an array, and the filter bag mouths of each filter bag are connected to the air outlet pipe through exhaust pipes. It is characterized in that a heating groove is opened on the outer wall of the hopper, an electric heating pipe is arranged in the heating groove, a cover body for closing the heating groove is arranged on the heating groove, one side of the cover body is hinged to one side of the heating groove, extension plates are arranged on both sides of the other side of the cover body, and the extension plates are fixed on the outer wall of the hopper through locking devices.

[0009] A further improvement of the present utility model is that the electric heating pipes are arranged in an S shape in the heating groove to improve the heating efficiency.

[0010] A further improvement of the present utility model is that a rubber sealing strip is arranged on the surface of the cover body facing the heating groove. When the cover body is closed, the rubber sealing strip is located outside the notch of the heating groove, playing a sealing role to prevent external substances from entering the heating groove and affecting the operation of the electric heating pipe.

[0011] A further improvement of the present utility model is that a temperature sensor is arranged on the box body to monitor the temperature inside the box body, so as to facilitate the control of the heating operation of the electric heating pipe and keep the temperature inside the box body constant.

[0012] A further improvement of the present utility model is that electric sealing valves are arranged on both the air inlet and the air outlet pipe. When the dust collector stops running and the electric heating pipe starts to work, the air inlet and the air outlet pipe are closed through the electric sealing valves to prevent the outflow of hot air, playing a role in energy saving and reducing the energy consumption of the electric heating.

[0013] A further improvement of the present utility model is that heat preservation layers are arranged on both the outer walls of the box body and the hopper, playing a heat preservation effect and improving the constant temperature effect of the electric heating pipe heating.

[0014] A further improvement of the present utility model is that the locking device includes a pressing plate. One end of the pressing plate is hinged to the outer wall of the hopper, and the other end is connected to the outer wall of the hopper through a bolt. The hinged part and the bolt connection part are respectively located on both sides of the extension plate. When the cover body is closed, the pressing plate is rotated around the hinged part to the extension plate, tightly pressing the extension plate, and then the other end of the pressing plate is fixed through the bolt, so as to realize the fixation of the cover body. When the electric heating pipe needs to be maintained and replaced, the bolt is removed, and then the pressing plate is rotated away from the extension plate to separate the cover body from the heating groove.

[0015] The beneficial effects of the present utility model are:

[0016] The utility model heats the inside of the dust collector after shutdown by setting up electric heating tubes. At the same time, by cooperating with an electric sealing valve to close the air inlet and the air outlet pipe, and the heat preservation function of the heat preservation layer, it can achieve the constant temperature effect above the dew point inside the dust collector with lower energy consumption, effectively preventing the occurrence of the phenomenon of condensation and bag sticking. At the same time, the utility model adopts the cooperation mode of a cover plate and a heating groove, which is convenient for maintaining and replacing the electric heating tubes. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the utility model.

[0018] Figure 2 It is a schematic structural diagram of the cover body of the utility model.

[0019] In the figure: box body 1, air inlet 2, air outlet pipe 3, ash hopper 4, filter bag 5, exhaust pipe 6, heating groove 7, electric heating tube 8, cover body 9, extension plate 10, locking device 11, rubber sealing strip 12, temperature sensor 13, electric sealing valve 14, heat preservation layer 15, pressing plate 111. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings.

[0021] As Figure 1-2 shown, an anti-condensation and bag-sticking constant temperature bag filter includes a box body 1. An air inlet 2 and an air outlet pipe 3 are arranged on the box body 1. A ash hopper 4 is connected to the bottom of the box body 1. A number of filter bags 5 are arranged in an array inside the box body 1. The mouths of the filter bags 5 of each filter bag 5 are connected to the air outlet pipe 3 through an exhaust pipe 6. A heating groove 7 is opened on the outer wall of the ash hopper 4. An electric heating tube 8 is arranged inside the heating groove 7. A cover body 9 for closing the heating groove 7 is arranged on the heating groove 7. One side of the cover body 9 is hinged to one side of the heating groove 7. Extension plates 10 are arranged on both sides of the other side of the cover body 9. The extension plates 10 are fixed on the outer wall of the ash hopper 4 through locking devices 11.

[0022] Specifically, the electric heating tubes 8 are arranged in an S shape inside the heating groove 7 to improve the heating efficiency.

[0023] Specifically, a rubber sealing strip 12 is arranged on the surface of the cover body 9 facing the heating groove 7. When the cover body 9 is closed, the rubber sealing strip 12 is located outside the notch of the heating groove 7, playing a sealing role to prevent external substances from entering the heating groove 7 and affecting the operation of the electric heating tube 8.

[0024] Specifically, a temperature sensor 13 is arranged on the box body 1 to monitor the temperature inside the box body 1, so as to facilitate controlling the heating operation of the electric heating tube 8 and maintaining a constant temperature state inside the box body 1.

[0025] Specifically, electric seal valves 14 are provided on both the air inlet 2 and the air outlet pipe 3. When the dust collector stops operating and the electric heating pipe 8 starts to work, the air inlet 2 and the air outlet pipe 3 are closed through the electric seal valves 14 to prevent the outflow of hot air, thus playing a role in energy conservation and reducing the energy consumption of the electric heating.

[0026] Specifically, heat insulation layers 15 are provided on the outer walls of both the box body 1 and the ash hopper 4, which play a heat insulation effect and improve the constant temperature effect of the electric heating pipe 8 during heating.

[0027] Specifically, the locking device 11 includes a pressing plate 111. One end of the pressing plate 111 is hinged to the outer wall of the ash hopper 4, and the other end is bolted to the outer wall of the ash hopper 4. The hinge point and the bolt connection point are respectively located on both sides of the extension plate 10. When the cover body 9 is closed, the pressing plate 111 is rotated around the hinge point onto the extension plate 10 to tightly press the extension plate 10, and then the other end of the pressing plate 111 is fixed by bolts, thereby realizing the fixation of the cover body 9. When the electric heating pipe 8 needs to be maintained and replaced, the bolts are removed, and then the pressing plate 111 is rotated away from the extension plate 10 to separate the cover body 9 from the heating groove 7.

[0028] The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

Claims

1. An anti-condensation bag constant temperature bag dust collector, comprising a box body, an air inlet and an air outlet pipe are arranged on the box body, a ash hopper is connected to the bottom of the box body, a plurality of filter bags are arranged in an array in the box body, and the filter bag ports of each filter bag are connected to the air outlet pipe through an exhaust pipe, characterized in that: A heating groove is provided on the outer wall of the ash hopper, an electric heating pipe is provided in the heating groove, a cover body for closing the heating groove is provided on the heating groove, one side of the cover body is hingedly connected to one side of the heating groove, and extension plates are provided on both sides of the other side of the cover body, and the extension plates are fixed to the outer wall of the ash hopper through a locking device.

2. The anti-condensation paste bag constant temperature bag dust collector according to claim 1, characterized in that: The electric heating tube is arranged in an S shape in the heating tank.

3. The anti-condensation paste bag constant temperature bag dust collector according to claim 1, characterized in that: A circle of rubber sealing strip is arranged on the surface of the cover body facing the heating tank.

4. The anti-condensation paste bag constant temperature bag dust collector according to claim 1, characterized in that: A temperature sensor is arranged on the box body.

5. The anti-condensation paste bag constant temperature bag dust collector according to claim 1, characterized in that: The air inlet and the air outlet pipe are both provided with electric sealing valves.

6. The anti-condensation paste bag constant temperature bag dust collector according to claim 1, characterized in that: The outer walls of the box body and the ash hopper are both provided with insulation layers.

7. The anti-condensation paste bag constant temperature bag dust collector according to claim 1, characterized in that: The locking device comprises a pressing plate, one end of which is hingedly connected to the outer wall of the ash hopper, and the other end is connected to the outer wall of the ash hopper by bolts, and the hinged part and the bolted part are respectively located on both sides of the extension plate.

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