A cloth bag dust collector

Abstract

The utility model discloses a cloth bag dust collector relates to cloth bag dust collector field, including the box, and the box is respectively communicated with the air inlet pipe and the air outlet pipe, and the box bottom is connected with the hopper, and the box is arrayed with a plurality of filter bags, and the filter bag mouth of each filter bag all is communicated with the air outlet pipe through the exhaust pipe, and the air inlet pipe is installed with the three -way valve in series, and the inlet end of three -way valve is connected with the flue gas inlet pipe, and the first export end of three -way valve is communicated with the air inlet pipe, and the second export end of three -way valve connects the fluid inlet of heat exchanger, and the fluid export of heat exchanger is back -connected to the air inlet pipe through the pipeline, and the flue gas inlet pipe is fixed with the spark detector and temperature sensor, and the dust concentration detector is correspondingly set up in the just above of each filter bag, and the detection probe of dust concentration detector vertically extends to the inner chamber central position of corresponding filter bag, the utility model discloses effectively solve the problem of the prior art in existing flue gas entrains star or temperature is too high and is easy to damage cloth bag and cloth bag breakage difficult to find in time.

Description

Technical Field

[0001] This utility model relates to the field of baghouse dust collectors, specifically a baghouse dust collector. Background Technology

[0002] A baghouse dust collector is a dry dust filtration device suitable for collecting fine, dry, non-fibrous dust. Its working principle is as follows: after the dust-laden gas enters the baghouse dust collector, the dust is trapped outside the bag by the interception effect of the filter bags and settles into the ash hopper under the action of gravity. The filtered airflow is discharged through the air outlet at the top of the filter bags.

[0003] Existing baghouse dust collectors have some problems in practical use. On the one hand, when the flue gas contains sparks or the temperature is too high, it can easily damage the filter bags, affecting the service life and dust removal efficiency of the dust collector. On the other hand, the filter bags may break during long-term use, and existing equipment often fails to detect this in time, leading to dust leakage and environmental pollution. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the above-mentioned technology and provide a bag filter to solve the problems of existing technologies, such as flue gas carrying sparks or excessively high temperature easily damaging the filter bag and the difficulty in timely detection of filter bag damage.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0006] A baghouse dust collector includes a housing with an inlet pipe and an outlet pipe connected to it. A dust hopper is connected to the bottom of the housing. Several filter bags are arranged in an array inside the housing, and the filter bag openings of each filter bag are connected to the outlet pipe through an exhaust pipe. The inlet pipe is equipped with a three-way valve connected in series. The inlet end of the three-way valve is connected to the flue gas inlet pipe, the first outlet end of the three-way valve is directly connected to the inlet pipe, and the second outlet end of the three-way valve is connected to the fluid inlet of a heat exchanger through a pipe. The fluid outlet of the heat exchanger is connected back to the inlet pipe through a pipe. A spark detector and a temperature sensor are fixedly installed inside the flue gas inlet pipe. A dust concentration detector is installed directly above each filter bag, and the detection probe of the dust concentration detector extends vertically downward to the center of the corresponding filter bag's inner cavity.

[0007] A further improvement of this utility model is that an electromagnetic valve is installed at the bottom ash discharge port of the ash hopper.

[0008] A further improvement of this utility model is that a bracket for supporting the box body is fixedly provided on the outer wall of the ash hopper.

[0009] A further improvement of this utility model is that the heat exchanger is provided with a cooling medium inlet and a cooling medium outlet, and the cooling medium is air.

[0010] A further improvement of this invention is that the three-way valve is an electric three-way valve, which is electrically connected to the Mars detector and the temperature sensor through a control circuit, and can switch on / off states according to the Mars detection signal and the temperature detection signal.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. By installing a spark detector and a temperature sensor in the flue gas inlet pipe, sparks and temperature changes in the flue gas can be monitored in real time. When sparks are detected or the temperature exceeds the set threshold, the electric three-way valve can automatically switch to the heat exchanger passage to cool the high-temperature flue gas, preventing high temperature or sparks from entering the housing and damaging the filter bags, effectively reducing safety hazards such as fire.

[0013] 2. A dust concentration detector is installed directly above each filter bag, with its probe extending to the center of the filter bag's inner cavity. This allows for precise monitoring of the dust filtration performance of each filter bag. If the dust concentration of a particular filter bag is abnormal, it indicates damage. Timely alerts prevent the failure of individual filter bags from affecting the overall filtration effect, ensuring continuous and efficient operation of the equipment.

[0014] 3. The heat exchanger uses air as the cooling medium, eliminating the need for additional cooling resources and making it more energy-efficient and environmentally friendly. Furthermore, its structural design allows it to adapt to different flue gas treatment needs under various operating conditions, giving it wide applicability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] In the diagram: 1. Housing; 2. Inlet pipe; 3. Outlet pipe; 4. Dust hopper; 5. Filter bag; 6. Exhaust pipe; 7. Three-way valve; 8. Flue gas inlet pipe; 9. Heat exchanger; 10. Spark detector; 11. Temperature sensor; 12. Dust concentration detector; 13. Solenoid valve; 14. Bracket; 15. Cooling medium inlet; 16. Cooling medium outlet. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0018] like Figure 1As shown, a bag filter dust collector includes a housing 1, with an inlet pipe 2 and an outlet pipe 3 connected to the housing 1. A dust hopper 4 is connected to the bottom of the housing 1. Several filter bags 5 are arranged in an array inside the housing 1. The outlet of each filter bag 5 is connected to the outlet pipe 3 through an exhaust pipe 6. A three-way valve 7 is installed in series on the inlet pipe 2. The inlet end of the three-way valve 7 is connected to the flue gas inlet pipe 8. The first outlet end of the three-way valve 7 is directly connected to the inlet pipe 2. The second outlet end of the three-way valve 7 is connected to the fluid inlet of a heat exchanger 9 through a pipe. The fluid outlet of the heat exchanger 9 is connected back to the inlet pipe 2 through a pipe. A spark detector 10 and a temperature sensor 11 are fixedly installed inside the flue gas inlet pipe 8. A dust concentration detector 12 is installed directly above each filter bag 5. The detection probe of the dust concentration detector 12 extends vertically downward to the center of the inner cavity of the corresponding filter bag 5.

[0019] In this embodiment, a solenoid valve 13 is installed at the bottom ash discharge port of the ash hopper 4.

[0020] In this embodiment, a bracket 14 for supporting the box body 1 is fixedly installed on the outer wall of the ash hopper 4.

[0021] In this embodiment, the heat exchanger 9 is provided with a cooling medium inlet 15 and a cooling medium outlet 16, and the cooling medium is air.

[0022] In this embodiment, the three-way valve 7 is an electric three-way valve. The electric three-way valve is electrically connected to the Mars detector 10 and the temperature sensor 11 through a control circuit, and can switch on and off states according to the Mars detection signal and the temperature detection signal.

[0023] Further detailed description of this embodiment:

[0024] The housing 1 is the core load-bearing component of this dust collector. An inlet pipe 2 is connected to the lower side wall of the housing, while an outlet pipe 3 is connected to the top. This layout facilitates a reasonable flow path for the flue gas within the housing 1. The bottom of the housing 1 is sealed with a dust hopper 4 via bolts. The dust hopper 4 is funnel-shaped and can efficiently collect the filtered dust.

[0025] Inside the housing 1, several filter bags 5 are arranged in a horizontal array. The filter bags 5 are made of needle-punched felt material, which has good filtration performance and temperature resistance. The upper opening of the filter bag 5 is the filter bag opening, and each filter bag opening is connected to the air outlet pipe 3 through the exhaust pipe 6. The two ends of the filter bag 5 are respectively sealed to the tube sheet inside the housing 1 and the exhaust pipe 6, effectively preventing unfiltered flue gas from directly entering the air outlet pipe 3.

[0026] An electric three-way valve 7 is installed in series on the air inlet duct 2. The inlet end of the electric three-way valve 7 is sealed to the flue gas inlet duct 8 via a flange to ensure that the flue gas does not leak. The first outlet end of the three-way valve 7 is directly connected to the air inlet duct 2, and the second outlet end is connected to the fluid inlet of the heat exchanger 9 via a pipe. The fluid outlet of the heat exchanger 9 is then connected back to the air inlet duct 2 via a pipe, forming a switchable flue gas flow loop. The heat exchanger 9 is provided with a cooling medium inlet 15 and a cooling medium outlet 16. In this embodiment, the cooling medium is air, which exchanges heat with the high-temperature flue gas to reduce the flue gas temperature.

[0027] A spark detector 10 and a temperature sensor 11 are fixedly installed inside the flue gas inlet pipe 8, both of which are electrically connected to the three-way valve 7 via control lines. When the spark detector 10 detects the presence of sparks in the flue gas, or the temperature sensor 11 detects that the flue gas temperature exceeds a set threshold, the electric three-way valve 7 will automatically switch on / off states, allowing the flue gas to enter the heat exchanger 9 for processing before entering the housing 1.

[0028] Each filter bag 5 is equipped with a dust concentration detector 12 directly above it. The detection probe of the dust concentration detector 12 extends vertically downward to the center of the inner cavity of the corresponding filter bag 5, which can accurately detect the dust concentration inside the filter bag 5.

[0029] In addition, a bracket 14 for supporting the box 1 is fixedly installed on the outer wall of the ash hopper 4. The bracket 14 is made of angle steel and is fixedly connected to the outer wall of the ash hopper 4 by bolts, providing stable support for the entire equipment and ensuring the structural stability of the equipment during operation.

[0030] The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A baghouse dust collector, comprising a housing, an inlet pipe and an outlet pipe respectively connected to the housing, a dust hopper connected to the bottom of the housing, and a plurality of filter bags arranged in an array inside the housing, wherein the filter bag opening of each filter bag is connected to the outlet pipe through an exhaust pipe, characterized in that, A three-way valve is installed in series on the air inlet pipe. The inlet end of the three-way valve is connected to the flue gas inlet pipe, the first outlet end of the three-way valve is directly connected to the air inlet pipe, and the second outlet end of the three-way valve is connected to the fluid inlet of the heat exchanger through a pipe. The fluid outlet of the heat exchanger is connected back to the air inlet pipe through a pipe. A spark detector and a temperature sensor are fixedly installed inside the flue gas inlet pipe. A dust concentration detector is installed directly above each filter bag. The detection probe of the dust concentration detector extends vertically downward to the center of the inner cavity of the corresponding filter bag.

2. The bag filter dust collector according to claim 1, characterized in that, A solenoid valve is installed at the bottom ash discharge port of the ash hopper.

3. A bag filter dust collector according to claim 1, characterized in that, A bracket for supporting the box is fixedly installed on the outer wall of the ash hopper.

4. A bag filter dust collector according to claim 1, characterized in that, The heat exchanger is provided with a cooling medium inlet and a cooling medium outlet, and the cooling medium is air.

5. A bag filter dust collector according to claim 1, characterized in that, The three-way valve is an electric three-way valve, which is electrically connected to the Mars detector and temperature sensor through a control circuit, and can switch on / off states according to the Mars detection signal and the temperature detection signal.

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