High-temperature bag type dust collector and monitoring system thereof

Abstract

The utility model relates to the technical field of bag type dust collection, in particular to a high-temperature bag type dust collector, which comprises a barrel, the barrel is mounted on a mounting frame, a cover is arranged on the barrel, a dust hopper is arranged at the bottom of the barrel, an air inlet pipe is communicated with the lower wall of one side of the barrel, an air outlet pipe is communicated with the upper arm of the other side of the barrel, and the air inlet pipe is communicated with an air outlet pipe. A fan is mounted on the air outlet pipe; a mounting plate is fixed at the upper part in the barrel body, a plurality of filter bags are mounted on the mounting plate, a blowing ash removal assembly is arranged above the mounting plate, and nozzles of the blowing ash removal assembly are arranged towards bag openings of the filter bags; the filter bag is in an inverted cone shape and comprises a supporting frame arranged inside and a bag body arranged outside, a buckling groove is formed in the upper end of the supporting frame, and the bag body is fixed to the supporting frame through buckling between a buckling ring and the buckling groove. Through the arrangement of the filter bag, the problem of low gas passing speed is solved, and through the arrangement of the monitoring system, the safe operation of the device is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of bag filter technology, and in particular to a high-temperature bag filter and its monitoring system. Background Technology

[0002] In many industrial production processes, such as cement, metallurgy, power, and chemical industries, the emission of large amounts of high-temperature gases can cause serious environmental pollution. To address this problem, high-temperature baghouse dust collectors, as a highly efficient dust control device, are widely used in these industries. The core technology of baghouse dust collectors is the use of filter bags to capture dust in the gas, thereby purifying the exhaust gas.

[0003] With increasingly stringent environmental standards, the requirements for dust concentration in emitted gases are becoming more stringent, placing higher demands on the performance of dust collectors. Especially in high-temperature environments, traditional dust collectors suffer from poor temperature resistance, low filtration efficiency, and short service life. Therefore, developing high-temperature baghouse dust collectors with higher temperature resistance and better filtration efficiency has become a key focus of technological research.

[0004] Currently, the key technical challenges of high-temperature baghouse dust collectors mainly lie in the selection and treatment of filter media, dust removal technology, and the overall design of the equipment. In high-temperature environments, the thermal stability, chemical stability, and oxidation resistance of the filter media directly affect the performance and service life of the dust collector. Existing baghouse dust collectors use cylindrical filter bags. When filtering dust and particles, the cylindrical shape of the filter bags obstructs the airflow velocity as the airflow moves upwards, and they are also difficult to replace when clogged.

[0005] Chinese patent CN220939652U discloses a pulse dust collector for reducing dust accumulation, comprising a connecting base plate, a dust collection box fixedly connected to the top of the connecting base plate, a connecting plate fixedly connected to the inner side of the dust collection box, a dust collection bag fixedly connected to the bottom end of the connecting plate, a pulse dust collector fixedly connected to the outer side of the connecting base plate, a suction pump fixedly connected to the top of the connecting base plate, an air inlet pipe fixedly connected to the outer side of the suction pump with its other end communicating with the outer side of the dust collection box, an air inlet hole on the outer side of the dust collection box, and an air inlet pipe communicating with the dust collection box through the air inlet hole. A collection box is movably connected to the top of the connecting base plate, and a filter assembly is fixedly connected to the outer side of the collection box. This pulse dust collector for reducing dust accumulation has the advantage of improving the treatment effect of the dust collection bag and effectively preventing dust from re-accumulating on the surface of the dust collection bag.

[0006] The aforementioned patent prevents the dust collection bag from re-adheding after pulse dust removal by using a dust pump and exhaust hose. However, the cylindrical shape of the filter bag affects the speed of gas passage, which can easily cause an increase in internal pressure and lead to machine malfunction. Utility Model Content

[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose a high-temperature bag filter and its monitoring system. By setting the filter bag, the problem of low gas passage speed is solved, and by setting the monitoring system, the safe operation of the device is guaranteed.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A high-temperature bag filter includes a cylindrical body mounted on a mounting frame. The cylindrical body has a cover and a dust hopper at its bottom. An air inlet pipe is connected to the lower wall of one side of the cylindrical body, and an air outlet pipe is connected to the upper arm of the other side of the cylindrical body. A fan is mounted on the air outlet pipe. A mounting plate is fixed to the upper part of the cylindrical body, and multiple filter bags are mounted on the mounting plate. A pulse-jet cleaning assembly is located above the mounting plate, with the nozzles of the pulse-jet cleaning assembly facing the openings of the filter bags.

[0010] The filter bag is inverted conical in shape. The filter bag includes an internal support frame and an external bag body. The upper end of the support frame is provided with a fastening groove. The bag body is fitted onto the support frame, and the bag opening end of the bag body is fastened and fixed to the fastening groove on the support frame by a fastening ring.

[0011] Preferably, the top of the support frame is connected to a fixing member, which is an annular ring with an inverted U-shaped groove in cross-section. The outer ring of the inverted U-shaped groove of the fixing member has a first protrusion. An mounting ring is fixed on the mounting plate, and a second protrusion is provided on the outer side of the mounting ring. A stepped hole is provided on the mounting plate at the center of the mounting ring. After the filter bag is inserted into the stepped hole, its top is abutted against the stepped hole by a fastening ring. The top is fixed and limited by the pressing cooperation of the first protrusion and the second protrusion.

[0012] Preferably, an observation window is also installed on the side wall of the cylinder.

[0013] Preferably, the support frame is a steel wire skeleton, and the bag body is made of one of polyester, polyimide, glass fiber, and aramid.

[0014] This utility model also claims a monitoring system for the above-mentioned high-temperature bag filter, including sensors installed on the cylinder, multiple sensors being electrically connected to a controller, the controller being electrically connected to an alarm, and the controller being electrically connected to a power supply.

[0015] Preferably, the sensor includes a temperature sensor, a flow sensor, and a pressure sensor.

[0016] Preferably, the controller is equipped with a control panel and a data display screen.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The conical filter bag of this utility model flows upward after the dust-laden gas enters. The conical filter bag design allows the airflow to pass directly upward through the bag body. Compared with the cylindrical filter bag, the conical filter bag does not require the gas to turn horizontally after rising. This can reduce the turning of the gas flow, reduce the flow resistance caused by the turning, and enhance the gas flow speed.

[0019] (2) The filter bag of this utility model is installed by the cooperation of the fastening ring and the fastening groove, and is snapped and fixed on the support frame, which is convenient for installation. At the same time, it is easy to replace the filter bag after long-term use and damage. Furthermore, the installation plate and the support frame are fastened by the first protrusion and the second protrusion, which realizes the installation of the filter bag. At the same time, the fastening ring abuts against the stepped opening to prevent the gas from passing directly without filtration during the filtration process, causing leakage. While ensuring tight installation, it also ensures convenient disassembly and installation, and is highly operable.

[0020] (3) The monitoring system of this utility model detects the pressure and temperature inside the cylinder through temperature and pressure sensors. By monitoring temperature and pressure, abnormalities can be detected in time and countermeasures can be taken, which improves the operating efficiency of the dust collector and can also effectively reduce maintenance costs and downtime, thereby ensuring the efficient operation of the system and long-term environmental protection. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a high-temperature bag filter according to this utility model;

[0022] Figure 2 This is a cross-sectional structural diagram of a high-temperature bag filter according to this utility model;

[0023] Figure 3 This is a schematic diagram of the exploded structure of the filter bag in a high-temperature bag filter according to this utility model;

[0024] Figure 4 This is a schematic diagram of the exploded structure of the filter bag in a high-temperature bag filter according to this utility model;

[0025] Figure 5 This is a partial cross-sectional structural diagram of the filter bag of a high-temperature bag filter according to this utility model.

[0026] In the diagram: 100, cylinder; 200, mounting bracket; 300, filter bag; 400, ash hopper; 500, pulse-jet cleaning assembly; 600, cover; 110, air inlet pipe; 120, air outlet pipe; 130, mounting plate; 160, observation window; 310, support frame; 320, bag body; 311, fastening groove; 312, fastening ring; 313, fastener; 314, first protrusion; 131, mounting ring; 132, second protrusion; 133, stepped hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] like Figures 1-5 As shown, a high-temperature bag filter includes a cylindrical body 100, which is mounted on a mounting frame 200. A cover 600 is provided on the cylindrical body 100. A dust hopper 400 is provided at the bottom of the cylindrical body 100. An air inlet pipe 110 is connected to the lower wall of one side of the cylindrical body 100, and an air outlet pipe 120 is connected to the upper arm of the other side of the cylindrical body 100. A fan is installed on the air outlet pipe 120. A mounting plate 130 is fixed inside the upper part of the cylindrical body 100. Multiple filter bags 300 are mounted on the mounting plate 130. A pulse-jet cleaning assembly 500 is provided above the mounting plate 130, with the nozzles of the pulse-jet cleaning assembly 500 facing the openings of the filter bags 300.

[0030] Dust-laden gas enters through the inlet pipe 110, is filtered by the filter bag 300, and is discharged through the outlet pipe 120. Dust and particles are trapped on the surface of the filter bag 300, and the fan provides suction pressure for the flow of dust-laden gas. After a period of use, the dust-covered filter bags 300 are symmetrically blown out by the pulse jet cleaning assembly 500, thus removing the dust. The removed dust accumulates in the dust hopper 400 and is discharged periodically. It should be noted that the pulse jet cleaning assembly 500 is existing technology and can use pulse jet cleaning technology, mechanical vibration cleaning, or other methods, which are not limited here.

[0031] The filter bag 300 is inverted conical in shape. The filter bag 300 includes an internal support frame 310 and an external bag body 320. The upper end of the support frame 310 is provided with a fastening groove 311. The bag body 320 is sleeved on the support frame 310. The bag opening end of the bag body 320 is fastened and fixed to the fastening groove 311 on the support frame 310 by a fastening ring 312.

[0032] The conical filter bag 300 allows the dust-laden gas to flow upwards after entering. The conical design of the filter bag 300 enables the airflow to pass directly upwards through the bag body 320, capturing the dust in the airflow. This avoids the problems of poor gas flow performance and increased internal pressure caused by the need for the gas to bend horizontally around the filter bag after rising in cylindrical filter bags, thus increasing the gas flow speed. The bag body 320 is installed and fixed to the support frame 310 by the cooperation of the fastening ring 312 and the fastening groove 311, which is convenient for installation and easy to replace after the bag body 320 is damaged after long-term use.

[0033] In this embodiment, a fixing member 313 is connected to the top of the support frame 310. The fixing member 313 is annular and has an inverted U-shaped groove in cross-section. A first protrusion 314 is provided on the outer ring of the inverted U-shaped groove of the fixing member 313. An installation ring 131 is fixed on the mounting plate 130. A second protrusion 132 is provided on the outer side of the installation ring 131. A stepped hole 133 is provided on the mounting plate 130 at the center of the installation ring 131. After the filter bag 300 is inserted into the stepped hole 133, its top is abutted against the stepped hole 133 by a fastening ring 312. The top is fixed and limited by the pressing cooperation between the first protrusion 314 and the second protrusion 132.

[0034] The mounting plate 130 and the support frame 310 are connected by the first protrusion 314 and the second protrusion 132, which realizes the installation of the filter bag 300. At the same time, the fastening ring 312 abuts against the stepped opening 133 to prevent unfiltered gas from passing directly through during the filtration process and causing leakage. While ensuring tight installation, it also ensures easy removal and installation, making it highly operable.

[0035] In this embodiment, an observation window 160 is also installed on the side wall of the cylinder 100.

[0036] View window 160 allows you to view the internal filtering status in real time.

[0037] In this embodiment, the support frame 310 is a steel wire skeleton, and the bag body 320 is made of one of polyester, polyimide, glass fiber, and aramid.

[0038] A steel wire skeleton is installed inside the bag body 320 to increase its compressive strength and maintain the bag shape.

[0039] Example 2

[0040] A monitoring system for a high-temperature bag filter according to Embodiment 1 includes sensors installed on the cylinder 100, multiple sensors being electrically connected to a controller, the controller being electrically connected to an alarm, and the controller being electrically connected to a power supply.

[0041] The controller is a PLC controller. The controller sets the normal threshold range for each sensor. The controller analyzes and compares the data detected by the sensors. When the detected data is higher or lower than the threshold range, the controller will alert the staff to take action through an alarm.

[0042] In this embodiment, the sensors include a temperature sensor, a flow sensor, and a pressure sensor.

[0043] Temperature sensors detect the temperature inside the high-temperature dust collector. By monitoring the temperature, the filter bags can be protected from overheating damage. At the same time, they can also provide data support for fault diagnosis and maintenance. Flow sensors monitor the gas velocity and flow rate inside the dust collector to ensure filtration effect and equipment operating efficiency. Pressure sensors can monitor the air pressure changes inside the dust collector bags in real time, reflecting the usage status of the dust collector bags and improving the efficiency and safety of the dust collection system.

[0044] In this embodiment, the controller is equipped with a control panel and a data display screen.

[0045] The control panel allows for adjustments and changes to various programs and data of the controller, while the display screen is used for data display.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-temperature bag filter, comprising a cylindrical body (100), characterized in that: The cylinder (100) is mounted on the mounting frame (200). The cylinder (100) has a cover (600). The bottom of the cylinder (100) is provided with a ash hopper (400). An air inlet pipe (110) is connected to the lower wall of one side of the cylinder (100). An air outlet pipe (120) is connected to the upper arm of the other side of the cylinder (100). A fan is installed on the air outlet pipe (120). An installation plate (130) is fixed inside the upper part of the cylinder (100). Multiple filter bags (300) are installed on the installation plate (130). A jet cleaning assembly (500) is provided above the installation plate (130). The nozzle of the jet cleaning assembly (500) is set towards the bag opening of the filter bag (300). The filter bag (300) is inverted conical in shape. The filter bag (300) includes an internal support frame (310) and an external bag body (320). The upper end of the support frame (310) is provided with a fastening groove (311). The bag body (320) is fitted onto the support frame (310). The bag opening end of the bag body (320) is fastened and fixed to the fastening groove (311) on the support frame (310) by a fastening ring (312).

2. The high-temperature bag filter according to claim 1, characterized in that: The top of the support frame (310) is connected to a fastener (313), which is annular and has an inverted U-shaped groove in cross section. The outer ring of the inverted U-shaped groove of the fastener (313) has a first protrusion (314). The mounting plate (130) is fixed with a mounting ring (131), and the outer side of the mounting ring (131) has a second protrusion (132). The mounting plate (130) at the center of the mounting ring (131) has a stepped hole (133). After the filter bag (300) is inserted into the stepped hole (133), its top is abutted against the stepped hole (133) by a fastening ring (312). The top is fixed and limited by the pressing cooperation between the first protrusion (314) and the second protrusion (132).

3. A high-temperature bag filter according to claim 1, characterized in that: An observation window (160) is also installed on the side wall of the cylinder (100).

4. A high-temperature bag filter according to claim 1, characterized in that: The support frame (310) is a steel wire skeleton, and the bag body (320) is made of one of polyester, polyimide, glass fiber and aramid.

5. A monitoring system applied to the high-temperature bag filter as described in claims 1-4, comprising sensors mounted on the cylinder (100), characterized in that: The sensors are all electrically connected to the controller, which is electrically connected to an alarm and a power supply.

6. The monitoring system according to claim 5, characterized in that: The sensors include a temperature sensor, a flow sensor, and a pressure sensor.

7. The monitoring system according to claim 5, characterized in that: The controller is equipped with a control panel and a data display screen.

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