Pulse type bag type dust collector

Abstract

The utility model relates to the technical field of bag type dust collectors, in particular to a pulse type bag type dust collector, which comprises a barrel body, the barrel body is arranged on a support frame, a cover body is arranged on the barrel body, a dust hopper is arranged at the bottom of the barrel body, an air inlet pipe is communicated with the lower wall of one side of the barrel body, and an air outlet pipe is communicated with the upper wall of the other side of the barrel body. 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 pulse dust cleaning assembly is arranged in the barrel body above the filter bags, and a dust discharging assembly is mounted in the dust hopper. Through the arrangement of the pulse dust cleaning assembly and the dust discharging assembly, the problems that the dust cleaning effect is poor due to inaccurate control of a pulse valve, and blockage is prone to occurring when dust in the dust hopper is discharged are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bag type dust collector technical field especially relates to a pulse bag type dust collector. BACKGROUND

[0002] With the advancement of industrialization, the dust pollution generated in various production activities is increasingly serious, which has caused great threat to the environment and human health. In order to reduce the dust emission in industrial production, bag type dust collector, as a kind of efficient dust removal equipment, is widely used in cement, metallurgy, chemical industry, electric power and other industries. Bag type dust collector can effectively remove the tiny particulate matters in the air by capturing dust with filter bag, and is the core equipment in modern industrial dust removal technology.

[0003] In order to improve the working efficiency of bag type dust collector, especially to improve its stability and dust removal effect in long-term operation, pulse cleaning technology is widely used. Pulse cleaning technology can timely remove the dust adhered to the filter bag by high-pressure pulse airflow impacting the surface of the filter bag, prevent the filter bag from being blocked, and ensure the continuous and efficient operation of the dust collector.

[0004] In the bag type dust collector, the control of pulse valve is the core part of pulse cleaning system. The accurate control of pulse valve directly determines the cleaning effect, and the control mode of pulse valve is various. The traditional pulse valve control circuit uses relay and diode and other components for signal transmission and control. The relay and diode are easy to be disturbed by electricity, which may cause backflow current or circuit series connection, affecting the precise control and long-term stable operation of the pulse valve.

[0005] Chinese patent CN220939652U discloses a pulse dust collector for reducing dust accumulation, which comprises a connecting bottom plate, a dust removal box fixedly connected to the top end of the connecting bottom plate, a connecting plate fixedly connected to the inner side of the dust removal box, a dust removal bag fixedly connected to the bottom end of the connecting plate, a pulse dust removal device fixedly connected to the outer side of the connecting bottom plate, a dust suction pump fixedly connected to the top end of the connecting bottom plate, an air inlet pipe fixedly connected to the outer side of the dust suction pump and communicating with the outer side of the dust removal box, an air inlet hole formed in the outer side of the dust removal box, the air inlet pipe communicating with the dust removal box through the air inlet hole, and a collection box movably connected to the top end of the connecting bottom plate and fixedly connected with a filter assembly on the outer side. The pulse dust collector for reducing dust accumulation has the advantages of improving the treatment effect of the dust removal bag and effectively preventing dust from reaccumulating on the surface of the dust removal bag.

[0006] The above patent prevents the problem of secondary adhesion of the dust removal bag after pulse dust removal by the setting of the dust suction pump and the air outlet hose, but the dust in the dust hopper may also be blocked when it is discharged. Therefore, the structure of the bag type dust collector still needs to be further improved. Utility Model Content

[0007] To address the shortcomings of existing technologies, the purpose of this utility model is to propose a pulse-jet bag filter. By setting up a pulse cleaning component and an ash discharge component, it solves the problems of poor cleaning effect caused by inaccurate pulse valve control and easy clogging when discharging dust from the ash hopper.

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

[0009] A pulse-jet bag filter includes a cylindrical body mounted on a support 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 wall of the other side of the cylindrical body. A fan is installed on the air outlet pipe. An 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 inside the cylindrical body above the filter bags, and a dust discharge assembly is installed inside the dust hopper.

[0010] The pulse cleaning assembly includes an air tank installed on the outer wall of the cylinder. The air tank is connected to one end of the main pulse jet pipe, and the other end of the main pulse jet pipe is evenly connected to multiple pulse jet branch pipes. Multiple pulse jet nozzles are evenly distributed on the pulse jet branch pipes, and the outlet positions of the multiple pulse jet nozzles correspond one-to-one with the openings of multiple filter bags. Each pulse jet nozzle is equipped with a pulse valve, and the multiple pulse valves are electrically connected to a row line. The other end of the multiple row lines is electrically connected to a column line, and the column line is electrically connected to a controller. The controller is connected to a power source.

[0011] Preferably, a differential pressure gauge is installed on the side wall of the cylinder, and the differential pressure gauge is electrically connected to the controller.

[0012] Preferably, a one-way solenoid valve is provided at the lower outlet of the ash hopper, and a storage tank is connected below the ash hopper.

[0013] Preferably, the ash discharge assembly includes a transmission box fixedly connected between the inner sidewalls of the ash hopper and a rotating shaft horizontally connected to a support frame. The rotating shaft passes laterally through the ash hopper and the transmission box. Both ends of the rotating shaft are connected to the support frame. A motor is also installed on the support frame. The output end of the motor is fixedly connected to the rotating shaft to drive the rotating shaft to rotate. A first bevel gear is fixed on the rotating shaft and is located in the transmission box. A spiral shaft is also installed on the transmission box. A limit ring is fixed on the spiral shaft. The spiral shaft is inserted into the bottom plate of the transmission box and limited by the limit ring. A second bevel gear is fixed on the spiral shaft above the limit ring. The first bevel gear and the second bevel gear mesh with each other. Spiral blades are provided on the spiral shaft below the transmission box.

[0014] Preferably, the top of the transmission box is pointed.

[0015] Preferably, an observation window is further installed on the barrel side wall.

[0016] Preferably, the controller is a matrix controller, and the controller is electrically connected with a remote monitoring platform.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] (1) the pulse dust cleaning assembly of the utility model, through the matrix controller, sends the control signal, the corresponding industry and the column line conduction, the control signal is transmitted to the control end of the pulse valve, makes the pulse valve open or close, when opening, can open the corresponding pulse valve rapidly, makes the compressed air in the air pocket rapidly to the filter bag through the blowing port, removes the dust attached on the filter bag, reaches the dust removal function, also can pass through the controller adjustment control signal parameter and the on-off of line or column line, realizes the independent, accurate control to the pulse valve.

[0019] (2) the dust removal assembly of the utility model, through the motor drives the rotating shaft to rotate, makes the first bevel gear and the second bevel gear mesh, in the meshing process, the spiral blade continuously transports the dust to the dust outlet place in the downward dust hopper, reaches the function of smooth dust removal, avoids the problem that the dust removal is not smooth and causes the unstable operation of the dust remover.

[0020] (3) the top of the transmission box of the utility model is sharp, so that the falling dust does not accumulate on the transmission box, plays a dust falling guide role. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is the overall structure schematic diagram of the utility model a kind of pulse type bag type dust collector;

[0022] Fig. 2 It is the overall section structure schematic diagram of the utility model a kind of pulse type bag type dust collector;

[0023] Fig. 3 It is the partial schematic diagram of the utility model a kind of pulse type bag type dust collector's pulse dust cleaning assembly;

[0024] Fig. 4 It is the structure schematic diagram of the utility model a kind of pulse type bag type dust collector's dust removal assembly.

[0025] In the diagram: 100, cylinder; 200, support frame; 300, filter bag; 400, ash hopper; 500, pulse cleaning assembly; 600, cover; 800, ash discharge assembly; 110, air inlet pipe; 120, air outlet pipe; 130, mounting plate; 150, differential pressure gauge; 160, observation window; 170, support rod; 510, air tank; 520, main pulse jet pipe; 530, branch pulse jet pipe; 540, pulse jet nozzle; 550, pulse valve; 560, row line; 570, column line; 580, controller; 810, transmission box; 820, rotating shaft; 830, motor; 840, first bevel gear; 850, spiral shaft; 860, limit ring; 870, second bevel gear; 880, spiral blade. Detailed Implementation

[0026] 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.

[0027] Example

[0028] like Figs. 1-4 As shown, a pulse-jet bag filter includes a cylindrical body 100, which is mounted on a support frame 200. A cover 600 is provided on the cylindrical body 100. A dust hopper 400 is located 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 wall of the other side of the cylindrical body 100. A fan is installed on the air outlet pipe 120. An mounting plate 130 is fixed to the upper part of the cylindrical body 100, and multiple filter bags 300 are installed on the mounting plate 130. A pulse-jet cleaning assembly 500 is located inside the cylindrical body 100 above the filter bags 300. A dust discharge assembly 800 is installed inside the dust hopper 400.

[0029] The inlet pipe 110 is used for the entry of dust-laden gas. The fan introduces the dust-laden airflow into the dust collector through the inlet. When the airflow passes through the filter bag 300, the dust is trapped on the surface of the filter bag 300, and the clean gas is discharged through the outlet pipe 120.

[0030] The pulse ash cleaning assembly 500 comprises a gas pocket 510 mounted on the outer wall of the cylinder 100, the gas pocket 510 is connected with one end of the blowing main pipe 520, the other end of the blowing main pipe 520 is communicated with a plurality of blowing branch pipes 530, a plurality of blowing branch pipes 530 are uniformly distributed with a plurality of blowing ports 540, the outlet positions of a plurality of blowing ports 540 correspond to the bag openings of a plurality of filter bags 300 one by one, each blowing port 540 is mounted with a pulse valve 550, a plurality of pulse valves 550 are electrically connected with a row line 560, the other end of a plurality of row lines 560 is electrically connected with a column line 570, the column line 570 is electrically connected with a controller 580, and the controller 580 is connected with a power supply.

[0031] When the filter bag 300 needs to be cleaned, the controller 580 will issue an instruction to turn on the column line 570 and the corresponding row line 560, the on-off of the corresponding row line 560 and the column line 570 enables the controller 580 to control the corresponding pulse valve 550 individually, and at the same time, the width and interval of the pulse signal can be controlled by the controller 580 to improve the control accuracy, after the row line 560 and the column line 570 are turned on, a pulse control signal is sent to the corresponding pulse valve 550, and the compressed gas in the gas pocket 510 is rapidly blown to the filter bag 300 through the blowing port 540 to achieve excellent dust removal effect.

[0032] It should be noted that the ash cleaning process is periodic, and the dust collector will be cleaned regularly to ensure the filtering efficiency of the filter bag 300 and prolong the service life of the filter bag.

[0033] In the embodiment, a differential pressure gauge 150 is mounted on the side wall of the cylinder 100, and the differential pressure gauge 150 is electrically connected with the controller 580.

[0034] With the progress of the filtering process, dust will accumulate on the surface of the filter bag 300, gradually increasing the filtering resistance and reducing the dust removal efficiency, when the differential pressure gauge 150 of the dust collector detects that the resistance exceeds the set value, the controller 580 of the control system will issue a pulse ash cleaning instruction, and the pulse valve 550 will receive the control signal from the matrix circuit to release compressed air to blow on the filter bag 300 to shake off the dust.

[0035] In the embodiment, a one-way electromagnetic valve is arranged at the lower end outlet of the ash hopper 400, and a storage barrel is connected below the ash hopper 400.

[0036] After the dust is accumulated in the ash hopper 400, it needs to be discharged at regular intervals and transported to the external storage barrel by the ash discharge system.

[0037] In the embodiment, the ash discharging assembly 800 comprises a transmission box 810 fixedly connected between the inner side walls of the ash bucket 400 through the support rod 170, and a rotating shaft 820 horizontally connected on the support frame 200, the rotating shaft 820 transversely penetrates the ash bucket 400 and the transmission box 810, the two ends of the rotating shaft 820 are connected with the support frame 200, a motor 830 is further installed on the support frame 200, the output end of the motor 830 is fixedly connected with the rotating shaft 820 to drive the rotating shaft to rotate; a first bevel gear 840 is fixed on the rotating shaft 820, and the first bevel gear 840 is located in the transmission box 810; a spiral shaft 850 is further installed on the transmission box 810, a limiting ring 860 is fixed on the spiral shaft 850, the spiral shaft 850 is inserted on the bottom plate of the transmission box 810 and is limited by the limiting ring 860, a second bevel gear 870 is fixed on the spiral shaft 850 above the limiting ring 860, the first bevel gear 840 and the second bevel gear 870 are meshed with each other, and the spiral blade 880 is arranged on the spiral shaft 850 below the transmission box 810.

[0038] When ash needs to be discharged, the one-way electromagnetic valve is controlled to be opened by the controller 580, and the motor 830 is driven to rotate, under the rotation of the motor 830 and the rotating shaft 820, the first bevel gear 840 and the second bevel gear 870 are meshed and driven, under the rotation of the second bevel gear 870, the spiral shaft 850 drives the spiral blade 880 to rotate, so that the dust is discharged from the ash bucket 400 under the pushing of the spiral blade 880, and the ash discharging function is achieved.

[0039] In the embodiment, the top of the transmission box 810 is in the shape of a sharp angle.

[0040] The top of the transmission box is in the shape of a sharp angle, so that the falling dust cannot be accumulated on the transmission box, and the falling dust is guided

[0041] In the embodiment, the side wall of the cylinder body 100 is further provided with an observation window 160.

[0042] In the embodiment, the controller 580 is a matrix controller, and the controller 580 is electrically connected with a remote monitoring platform.

[0043] The working principle of the pulse type bag type dust collector is as follows:

[0044] The inlet pipe 110 is used for dust-containing gas to enter, and the fan introduces the dust-containing airflow into the cylinder body 100 through the inlet pipe 110, when the airflow passes through the filter bag 300, the dust is intercepted on the surface of the filter bag 300, and the clean gas is discharged from the outlet pipe 120,

[0045] When the filter bag 300 needs to be cleaned, the controller 580 sends a command to turn on the column line 570 and the corresponding row line 560, and the on-off of the corresponding row line 560 and the column line 570 enables the controller 580 to control the corresponding pulse valve 550 individually. Meanwhile, the controller 580 can control the width and interval of the pulse signal to improve the control accuracy. After the row line 560 and the column line 570 are turned on, a pulse control signal is sent to the corresponding pulse valve 550, and the compressed gas in the air bag 510 is rapidly sprayed through the blowing port 540 to clean the filter bag 300.

[0046] When the ash needs to be discharged, the one-way electromagnetic valve is controlled to be opened by the controller 580, and the motor 830 is driven to rotate. Under the rotation of the motor 830, the first bevel gear 840 meshes with the second bevel gear 870 to drive. Under the rotation of the second bevel gear 870, the helical shaft 850 drives the helical blade 880 to rotate, so that the dust is pushed out of the ash bucket 400 by the helical blade 880, and the ash discharge function is achieved.

[0047] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A pulse-jet baghouse comprising a housing (100), characterized in that: The barrel (100) is installed on the support frame (200), the barrel (100) is provided with the cover (600), the barrel (100) is provided with the hopper (400), the lower wall of the barrel (100) is communicated with the air inlet pipe (110), the upper wall of the other side of the barrel (100) is communicated with the air outlet pipe (120), and the air outlet pipe (120) is installed with the fan;The mounting plate (130) is fixed in the upper part of the barrel (100), a plurality of filter bags (300) are installed on the mounting plate (130), the pulse dust cleaning assembly (500) is arranged in the barrel (100) above the filter bag (300), and the dust discharge assembly (800) is installed in the hopper (400); The pulse dust cleaning assembly (500) includes a gas bag (510) installed on the outer wall of the barrel (100), the gas bag (510) is connected with one end of the blowing main pipe (520), the other end of the blowing main pipe (520) is uniformly communicated with a plurality of blowing branch pipes (530), a plurality of blowing branch pipes (530) are uniformly distributed on the blowing branch pipe (530), a plurality of blowing ports (540) are uniformly distributed on the blowing branch pipe (530), the outlet positions of a plurality of blowing ports (540) correspond to the bag openings of a plurality of filter bags (300) one by one;Each blowing port (540) is installed with a pulse valve (550), a plurality of pulse valves (550) are electrically connected with a row line (560), the other end of a plurality of row lines (560) is electrically connected with a column line (570), the column line (570) is electrically connected with a controller (580), and the controller (580) is connected with a power supply.

2. A pulse-jet baghouse according to claim 1, wherein: The differential pressure gauge (150) is installed on the side wall of the barrel (100), and the differential pressure gauge (150) is electrically connected with the controller (580).

3. A pulse-jet baghouse according to claim 1, wherein: The hopper (400) is provided with a one-way electromagnetic valve at the lower end outlet, and the hopper (400) is connected with a storage barrel below.

4. A pulse-jet baghouse according to claim 1, wherein: The ash discharging assembly (800) comprises a transmission box (810) fixedly connected between the inner side walls of the hopper (400) through a support rod (170), and a rotating shaft (820) horizontally connected to the support frame (200), the rotating shaft (820) transversely penetrating the hopper (400) and the transmission box (810), two ends of the rotating shaft (820) being connected to the support frame (200), a motor (830) being further installed on the support frame (200), an output end of the motor (830) being fixedly connected to the rotating shaft (820) to drive the rotating shaft (820) to rotate; a first bevel gear (840) is fixed on the rotating shaft (820), and the first bevel gear (840) is located in the transmission box (810); a spiral shaft (850) is further installed on the transmission box (810), a limiting ring (860) is fixed on the spiral shaft (850), the spiral shaft (850) is inserted into the bottom plate of the transmission box (810) and is limited by the limiting ring (860), a second bevel gear (870) is fixed on the spiral shaft (850) above the limiting ring (860), the first bevel gear (840) and the second bevel gear (870) are engaged with each other, and spiral blades (880) are arranged on the spiral shaft (850) below the transmission box (810).

5. A pulse-jet baghouse according to claim 4, wherein: The top of the transmission box (810) is in the shape of a sharp corner.

6. A pulse-jet baghouse according to claim 1, wherein: The side wall of the barrel (100) is further provided with an observation window (160).

7. A pulse-jet baghouse according to claim 1 wherein: The controller (580) is a matrix controller, and the controller (580) is electrically connected with a remote monitoring platform.

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