A cloth bag dust collector

Abstract

The utility model discloses a cloth bag dust remover belongs to dust removal equipment technical field, and it includes box body, a plurality of filter bags, pulse back flush device and beat ash device. A plurality of filter bags divide into N groups evenly. Beat ash device includes N beat ash ware, transmission assembly and drive motor, and N beat ash ware respectively with N group filter bag corresponding, and every beat ash ware and its corresponding filter bag constitute a beat ash unit. Among them, beat ash ware includes drive shaft and four groups of beat board on the axle, and the upper end of drive shaft is rotatory and is equipped with the baffle, and drive motor is fixedly installed on the box body, and its output shaft is connected with N drive shaft through transmission assembly. Drive motor and controller are electrically connected, and drive N drive shaft synchronous alternation carries out normal rotation and reverse rotation. The utility model can carry out beat ash operation alternately to every filter bag from two directions, improves beat ash effect to filter bag, and solves the problem that the existing cloth bag dust remover is easy to appear filter bag blockage.

Description

Technical Field

[0001] This utility model relates to the field of dust removal equipment technology, and in particular to a bag filter dust collector. Background Technology

[0002] Baghouse dust collectors are essential air purification devices in wood furniture processing plants, used to treat wood dust generated during sawing, sanding, and other processes, ensuring air quality in the production workshop. Figure 1 As shown, a baghouse dust collector generally includes a housing, several filter bags inside the housing, a pulse jet cleaning device above the filter bags, a dust hopper at the bottom of the housing, and a dust discharge device at the bottom of the dust hopper.

[0003] Currently, the most common problem encountered during the use of baghouse dust collectors is filter bag clogging. To prevent this, existing technologies have proposed several solutions involving installing a dust-tapping device inside the baghouse dust collector. With the pulse jet cleaning system in operation, this device taps the surface of the filter bags, causing the clumps to fall off. For example, Chinese patent CN 220110625 U proposes an energy-saving baghouse dust collector. This dust collector incorporates a tapping section. During pulse jet cleaning, the filter bags are in an expanded state, and the tapping section taps the filter bags, removing dust that cannot be removed by the pulse jet cleaning, thus reducing the energy consumption of the baghouse dust collector. However, such baghouse dust collectors require multiple cylinders for operation, especially in scenarios with multiple rows of filter bags. Furthermore, the tapping can only be performed in one direction, resulting in poor dust removal efficiency. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0004] This utility model proposes a bag filter dust collector with an internal dust-beating device that can alternately beat and remove dust from each filter bag from two directions, thereby solving the problem of filter bag clogging that is common in existing bag filters dust collectors.

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

[0006] A baghouse dust collector includes a housing with a horizontally arranged partition dividing the inner cavity into two independent spaces: a clean air chamber and a dust collection chamber. The lower part of the housing has a lower air inlet connecting to the dust collection chamber, and the upper part of the housing has an upper air outlet connecting to the clean air chamber. A plurality of filter bags are evenly distributed within the dust collection chamber. A pulse jet cleaning device is installed within the clean air chamber, having several jet nozzles positioned opposite the openings of the filter bags. The filter bags are arranged in a matrix and divided into N groups, where N is an integer greater than 2. Each group contains four filter bags, and the center lines connecting the centers of the four filter bags in the same group form a square.

[0007] It also includes a dust removal device, which comprises N dust collectors, a transmission assembly, and a drive motor. Each of the N dust collectors corresponds to one of the N sets of filter bags, and each dust collector and its corresponding set of filter bags constitute a dust removal unit. Each dust collector includes a vertically arranged drive shaft and four sets of striking plates. In the same dust removal unit, the drive shaft of the dust collector is located in the central area between the four filter bags. The four sets of striking plates are respectively arranged in the front, back, left, and right directions of the drive shaft, their horizontal projection forming a cross. The horizontal projections of the four filter bags are located in the upper left, lower left, upper right, and lower right areas of the cross, respectively. The upper end of the drive shaft rotatably passes through the partition and extends into the clean air chamber. The drive motor is fixedly mounted on the housing, and its output shaft is connected to the N drive shafts through the transmission assembly. The drive motor is electrically connected to a controller, driving the N drive shafts to synchronously and alternately rotate forward and reverse, thereby driving the striking plates on each drive shaft to perform dust removal operations on their corresponding filter bags.

[0008] Furthermore, each of the four sets of clappers on the drive shaft includes 3-6 clappers that are equally spaced along the axial direction of the drive shaft.

[0009] Furthermore, the clapper is made of silicone or rubber.

[0010] Furthermore, among the four filter bags in the same group, the distance between the outer walls of two adjacent filter bags is at least 10cm.

[0011] Furthermore, the drive shaft is rotatably connected to the partition via a first sealed bearing.

[0012] Furthermore, the drive motor is mounted on the top of the housing, with its output shaft penetrating downwards into the clean air chamber and rotatably connected to the housing via a second sealed bearing.

[0013] Furthermore, the transmission component is a pulley assembly, a sprocket assembly, or a gear assembly.

[0014] Furthermore, a connecting pipe is connected to the lower air inlet, the connecting pipe comprising a heat-conducting metal pipe, a heating wire layer, a sponge insulation layer and an outer pipe arranged sequentially from the inside to the outside; the heating wire layer is electrically connected to the controller.

[0015] Furthermore, a humidity sensor is installed on the housing, and the humidity sensor is electrically connected to the controller.

[0016] Furthermore, the controller is a PLC.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects:

[0018] 1. This invention uses a dust collector to alternately tap each filter bag from two directions, combined with a pulse back-flushing device, which can more efficiently remove dust accumulated on the surface of the filter bags and significantly reduce the probability of filter bag clogging. Furthermore, each dust collector can perform dust removal on four adjacent filter bags, effectively improving dust removal efficiency.

[0019] 2. This utility model requires only one drive motor and transmission components to drive all dust collectors to work synchronously, eliminating the need for multiple cylinders or other drive components, which significantly reduces the number of drive components and lowers equipment energy consumption and cost.

[0020] 3. The clapper of this utility model is made of silicone or rubber, which can effectively remove dust while reducing impact and wear on the filter bag and extending the service life of the filter bag.

[0021] 4. This utility model connects a connecting pipe with an electric heating wire heating layer to the lower air inlet. With the help of a humidity sensor and controller, it can automatically heat the air intake according to the humidity of the factory working environment, preventing humid air from entering the bag filter and causing dust to clump and adhere to the filter bag, thus further avoiding the problem of filter bag clogging. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a bag filter in the prior art;

[0023] Figure 2 This is a schematic diagram of the structure of the bag filter proposed in Embodiment 1 of this utility model;

[0024] Figure 3 This is a top view of the four dust-beating units in Embodiment 1 of this utility model;

[0025] Figure 4 This is a schematic diagram showing the connection between the drive motor and the four drive shafts as proposed in Embodiment 1 of this utility model;

[0026] Figure 5 This is a schematic diagram of the use of the bag filter dust collector proposed in Embodiment 2 of this utility model;

[0027] The components in the attached diagram are labeled as follows: 1-box body, 2-lower air inlet, 3-upper air outlet, 4-ash hopper, 5-ash discharge device, 6-partition plate, 7-clean air chamber, 8-pulse backflushing device, 9-dust removal chamber, 10-filter bag, 11-ash tapper, 12-drive shaft, 13-tapping plate, 14-first sealed bearing, 15-drive motor, 16-second sealed bearing, 17-transmission assembly, 18-controller, 19-connecting pipe, 20-cyclone dust collector, 21-induced draft fan. Detailed Implementation

[0028] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] like Figure 2-4 As shown, a bag filter dust collector includes a housing 1 and a dust removal device. A partition 6 is horizontally arranged inside the housing 1, dividing the inner cavity of the housing 1 into two independent spaces, namely a clean air chamber 7 and a dust removal chamber 9. The lower part of the housing 1 is provided with a lower air inlet 2 that connects to the dust removal chamber 9, and the upper part of the housing 1 is provided with an upper air outlet 3 that connects to the clean air chamber 7.

[0031] A number of filter bags 10 are evenly distributed inside the dust removal chamber 9, and a pulse backflushing device 8 is installed inside the clean air chamber 7. The pulse backflushing device 8 has several injection nozzles, which are respectively positioned opposite the openings of the filter bags 10. The pulse backflushing device 8 is existing technology, and its core components include an air storage tank, an electromagnetic pulse valve, a main pipeline, and multiple branch pipelines. The air storage tank is located outside the housing 1 and connected to the electromagnetic pulse valve. One end of the main pipeline is connected to the electromagnetic pulse valve, and the other end is connected to multiple branch pipelines. The main pipeline and branch pipelines form a pipeline network system installed inside the clean air chamber 7, and the injection nozzles are evenly distributed at the lower part of the multiple branch pipelines. When the pulse backflushing device 8 is working, it triggers the electromagnetic pulse valve, causing the compressed air in the air tank to be injected at high speed into the filter bag 10 through the main pipe and branch pipe. The instantaneous impact force of the compressed air causes the filter bag 10 to expand and vibrate rapidly, shaking off the dust adhering to the outer wall of the filter bag 10 into the ash hopper 4 below, thus achieving the initial cleaning of the filter bag 10 and providing a basis for the subsequent dust removal by the dust removal device.

[0032] In this embodiment, several filter bags 10 are arranged in a matrix and divided into N groups, where N is an integer greater than 2. Each group contains four filter bags, and the center lines connecting the four filter bags 10 in the same group form a square. The distance between the outer walls of any two adjacent filter bags 10 in the same group is at least 10 cm. In this embodiment, sixteen filter bags 10 are provided, divided into four groups. Within the same group, the distance between the outer walls of any two adjacent filter bags 10 is 15 cm.

[0033] The dust removal device includes N dust removers 11, a transmission assembly 17, and a drive motor 15. Each of the N dust removers 11 corresponds to one of the N sets of filter bags 10, and each dust remover 11 and its corresponding set of filter bags 10 constitute a dust removal unit. In this embodiment, four dust removers 11 correspond to four sets of filter bags 10, forming four dust removal units.

[0034] The dust collector 11 includes a vertically arranged drive shaft 12 and four sets of dusting plates 13. In the same dust collector unit, the drive shaft 12 of the dust collector 11 is located in the central area between the four filter bags 10. The four sets of dusting plates 13 are respectively arranged in the front, back, left and right directions of the drive shaft 12, and their horizontal projection forms a cross. The horizontal projections of the four filter bags 10 are respectively located in the upper left, lower left, upper right and lower right areas of the cross.

[0035] Specifically, the drive shaft 12 has four sets of tapping plates 13, each set including 3-6 tapping plates 13 evenly spaced along the axial direction of the drive shaft 12. The tapping plates 13 are made of silicone or rubber. While effectively tapping to remove dust, they can reduce impact wear on the filter bag 10 and extend the service life of the filter bag 10. In this embodiment, each set includes 4 tapping plates 13, and the tapping plates 13 are made of silicone.

[0036] The upper end of the drive shaft 12 rotatably passes through the partition 6 and extends into the clean air chamber 7. The drive shaft 12 is rotatably connected to the partition 6 via a first sealed bearing 14. To improve the stability of the drive shaft 12, the top of the drive shaft 12 can also be rotatably connected to the inner wall of the top of the housing 1. The drive motor 15 is fixedly mounted on the housing 1, and its output shaft is connected to N drive shafts 12 via a transmission assembly 17. Specifically, the drive motor 15 is mounted on the top of the housing 1, and its output shaft passes downward into the clean air chamber 7 and is rotatably connected to the housing 1 via a second sealed bearing 16.

[0037] The transmission assembly 17 is a pulley assembly, a sprocket assembly, or a gear assembly. In this embodiment, the transmission assembly 17 is a sprocket assembly, including five sprockets and four chains. One sprocket is mounted on each of the four drive shafts 12, and one sprocket is mounted on the output shaft of the drive motor 15. Adjacent sprockets are connected by chain drive. The sprocket on the output shaft of the drive motor 15 serves as the driving wheel, and the sprocket on the drive shaft 12 serves as the driven wheel.

[0038] The drive motor 15 is electrically connected to the controller 18, driving N drive shafts 12 to synchronously and alternately rotate forward and reverse, thereby driving the beaters 13 on each drive shaft 12 to beat and remove dust from the corresponding filter bags 10. In this embodiment, the controller 18 is a PLC, which controls the operation of the drive motor 15. The PLC model is Siemens S7-1200. When the drive motor 15 is running, the drive wheel drives all driven sprockets to rotate synchronously via a chain, thereby realizing that multiple drive shafts 12 synchronously and alternately rotate forward and reverse under the drive of the drive motor 15, ensuring that the beaters 13 of each dust collector 11 work together to complete the beating and dust removal operation on the filter bags 10.

[0039] This invention requires only one drive motor 15 and transmission component 17 to drive all dust collectors 11 to work synchronously, eliminating the need for multiple cylinders or other drive components, thus significantly reducing the number of drive components and lowering energy consumption and cost.

[0040] The dust-beating principle of this utility model is as follows: Each group of four filter bags 10 is arranged in a square with the drive shaft 12 of the dust beater 11 as the center. The four sets of beaters 13 arranged in a cross pattern on the drive shaft 12 are respectively arranged in the gap area of ​​the four filter bags 10. Under the control of the PLC controller 18, the drive motor 15 drives all drive shafts 12 to rotate synchronously and alternately in forward and reverse directions through the transmission component 17, so that each set of beaters 13 changes with the direction of the drive shaft 12, and beats the outer wall of the corresponding filter bag 10 from two opposite directions in sequence. Combined with the pulse back-blowing device 8 to blow into the bag, a two-way dust-cleaning effect of internal and external coordination is formed, which effectively removes the dust that is difficult to remove by beating in one direction.

[0041] The forward and reverse rotation angles of the drive shaft 12 can be flexibly set according to the filter bag spacing, the length of the tapping plate 13, and the actual dust removal requirements. The core principle is to ensure that the tapping plate 13 can accurately tap the outer wall of the filter bag 10 without structural interference. In this embodiment, the forward rotation angle is set to 30°, and the reverse rotation angle is consistent with the forward rotation angle. When the drive shaft 12 drives the four sets of tapping plates 13 to rotate forward 30°, it can tap one side of the four filter bags 10 simultaneously. Then, the drive shaft 12 reverses 30° to reset, and then continues to reverse 30° to tap the other side of the four filter bags 10 simultaneously. Through the alternating action of "forward rotation-reset-reverse rotation", bidirectional alternating tapping of the four filter bags 10 in the same group is achieved. In other embodiments, forward or reverse rotation can also be controlled by monitoring the stress change of the contact surface with a sensor, which is a conventional technical means.

[0042] This invention uses a dust collector 11 to alternately tap each filter bag 10 from two directions, combined with a pulse back-flushing device 8, to more efficiently remove dust accumulated on the surface of the filter bag 10, significantly reducing the probability of filter bag 10 clogging. Furthermore, each dust collector 11 can perform dust removal on four adjacent filter bags 10, effectively improving dust removal efficiency.

[0043] Example 2

[0044] In the case of use during the plum rain season in southern regions, when the bag filter is working, the high humidity air combines with wood dust, which greatly increases the stickiness of the dust and makes it easy to form clumps on the surface of the filter bag 10, thus causing the filter bag 10 to become clogged.

[0045] like Figure 5 As shown, in this embodiment, a connecting pipe 19 is connected to the lower air inlet 2. The connecting pipe 19 includes a heat-conducting metal pipe, a heating wire layer, a sponge insulation layer, and an outer pipe arranged sequentially from the inside to the outside. The heating wire layer is electrically connected to the controller 18. The connecting pipe 19 has a certain length to ensure its contact time with the dust gas and ensure the heating effect.

[0046] In use, the end of the connecting pipe 19 furthest from the lower air inlet 2 can be connected to the air outlet of the cyclone dust collector 20 for preliminary dust removal, eliminating large dust particles. The upper air outlet 3 is connected to the induced draft fan 21 through a pipe to discharge the purified gas.

[0047] A humidity sensor is installed on the housing 1, and the humidity sensor is electrically connected to the controller 18. When the humidity sensor detects that the humidity is too high, it immediately transmits a signal to the controller 18. Upon receiving the signal, the controller 18 automatically triggers the heating element in the connecting pipe 19 of the lower air inlet 2 to start. The heating element heats the air drawn in from the factory through a heat-conducting metal pipe. At the same time, the sponge insulation layer on the outside of the connecting pipe 19 reduces heat loss, ensuring a stable increase in the intake air temperature to reduce relative humidity. Once the humidity sensor detects that the ambient humidity in the factory has dropped to a preset safe threshold, the controller 18 will promptly cut off the power to the heating element, stopping heating and avoiding energy waste. The entire process requires no manual intervention, realizing intelligent control that automatically adjusts the dryness of the intake air according to the ambient humidity.

[0048] This invention connects a connecting pipe 19 with an electric heating wire layer to the lower air inlet 2, and works with a humidity sensor and controller 18 to automatically heat the incoming air according to the humidity of the factory working environment. This prevents humid air from entering the bag filter and causing dust to clump and adhere to the filter bag 10, thus further avoiding the problem of filter bag 10 clogging.

[0049] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A baghouse dust collector, comprising a housing, wherein a partition is horizontally arranged inside the housing to divide the inner cavity of the housing into two independent spaces, an upper and a lower space, namely a clean air chamber and a dust collection chamber; a lower air inlet communicating with the dust collection chamber is provided at the lower part of the housing, and an upper air outlet communicating with the clean air chamber is provided at the upper part of the housing; a plurality of filter bags are evenly arranged in the dust collection chamber, and a pulse backflushing device is provided in the clean air chamber, the pulse backflushing device having a plurality of jet nozzles, respectively arranged opposite to the openings of the plurality of filter bags, characterized in that: Several filter bags are arranged in a matrix and divided into N groups, where N is an integer greater than 2. Each group contains four filter bags, and the center lines connecting the four filter bags in the same group form a square. It also includes a dust removal device, which comprises N dust removers, a transmission assembly, and a drive motor. Each of the N dust removers corresponds to one of the N sets of filter bags, and each dust remover and its corresponding set of filter bags constitutes a dust removal unit. Each dust remover includes a vertically arranged drive shaft and four sets of striking plates. In the same dust removal unit, the drive shaft is located in the central area between the four filter bags. The four sets of striking plates are respectively arranged in the front, back, left, and right directions of the drive shaft, their horizontal projection forming a cross. The horizontal projections of the four filter bags are located in the upper left, lower left, upper right, and lower right areas of the cross, respectively. The upper end of the drive shaft rotatably passes through the partition and extends into the clean air chamber. The drive motor is fixedly mounted on the housing, and its output shaft is connected to the N drive shafts through the transmission assembly. The drive motor is electrically connected to a controller, driving the N drive shafts to synchronously and alternately rotate forward and reverse, thereby driving the striking plates on each drive shaft to perform dust removal operations on their corresponding filter bags.

2. The bag filter dust collector according to claim 1, characterized in that: The four sets of clappers on the drive shaft each include 3-6 clappers that are equally spaced along the axial direction of the drive shaft.

3. A bag filter dust collector according to claim 1, characterized in that: The clapper is made of silicone or rubber.

4. A bag filter dust collector according to claim 1, characterized in that: In the four filter bags in the same group, the distance between the outer walls of two adjacent filter bags is at least 10cm.

5. A bag filter dust collector according to claim 1, characterized in that: The drive shaft is rotatably connected to the partition via a first sealed bearing.

6. A bag filter dust collector according to claim 1, characterized in that: The drive motor is mounted on the top of the housing, and its output axis extends downward into the clean air chamber and is rotatably connected to the housing through a second sealed bearing.

7. A bag filter dust collector according to claim 1, characterized in that: The transmission component is a pulley assembly, a sprocket assembly, or a gear assembly.

8. A bag filter dust collector according to claim 1, characterized in that: A connecting pipe is connected to the lower air inlet. The connecting pipe includes a heat-conducting metal pipe, an electric heating wire layer, a sponge insulation layer, and an outer pipe arranged sequentially from the inside to the outside. The electric heating wire layer is electrically connected to the controller.

9. A bag filter dust collector according to claim 8, characterized in that: A humidity sensor is installed on the enclosure, and the humidity sensor is electrically connected to the controller.

10. A bag filter dust collector according to claim 9, characterized in that: The controller is a PLC.

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