A bag dust collector with self-cleaning function

Abstract

The present invention relates to the technical field of bag dust collectors, and in particular to a bag dust collector with a self-cleaning function. The present invention comprises a controller, a mounting plate, a filter bag, a connecting spring, a placement frame, a counterweight, etc. The controller is mounted on the side of the mounting frame, the mounting plate is connected to the inner wall of the outer shell, the filter bags are placed on the mounting plate at intervals, the placement frame is installed on the bottom of the mounting plate at intervals through connecting springs, and the connecting springs are distributed around the filter bag, the counterweight is placed in the placement frame, and the counterweight is connected to the bottom of the filter bag. The present invention can control the filter bag to vibrate back and forth through the coordination of the placement frame, the counterweight, the contact rod and the contact plate, so as to shake off the dust adhering to the outer surface of the filter bag. Compared with the existing pulse cleaning method, the present invention can not only reduce the stress fatigue of the filter bag material caused by rapid expansion and contraction, effectively delay the aging process of the filter bag, but also significantly increase the service life of the filter bag, reduce maintenance costs and replacement frequency.

Description

Technical Field

[0001] The present invention relates to the technical field of bag dust collectors, and in particular to a bag dust collector with a self-cleaning function. Background Art

[0002] Bag dust collector is a common gas-solid separation device. Its working principle is to use fabric filter bags to capture solid particles in dust-laden gas. When air containing dust or fine particles passes through the filter bag, the particles are retained on the surface of the filter bag, and the cleaned gas is discharged through the filter bag. As time goes by, a large amount of dust will accumulate on the surface of the filter bag, which will affect the filtration efficiency. Therefore, the filter bag needs to be cleaned regularly.

[0003] Patent publication number CN217567898U discloses a bag filter with a pulse backpressure dust removal function. The bag filter comprises a bag filter housing with a dust removal trough located within the housing. An exhaust pipe is fixedly connected to the lower center portion of the left side of the trough. A mounting plate is fixed to the interior of the trough above the exhaust pipe. The mounting plate has a mounting slot for mounting a filter bag holder. The key to the aforementioned patent lies in the design of its pulse nozzle, which releases a high-speed, high-pressure stream of compressed air in a short period of time. This airflow causes a transient expansion inside the filter bag, causing the filter bag to rapidly swell and contract, thereby effectively shaking off dust adhering to the outer surface. However, this filter bag cleaning method has certain limitations: First, the frequent, instantaneous expansion and contraction of the filter bag accelerates the aging process of the filter bag and shortens its service life. Second, because the airflow flows from top to bottom, it may re-entrain dust that has already been collected in the hopper, resulting in secondary dusting. This not only causes some dust to adhere to the outer surface of the filter bag again, but also reduces the efficiency of the entire dust removal system. Summary of the Invention

[0004] In view of this, the present invention provides a bag dust collector with a self-cleaning function, which can overcome the shortcomings of the existing bag dust collector that uses a reverse airflow blowing method to clean the filter bags, causing the filter bags to frequently expand and contract instantaneously, thereby accelerating the aging process of the filter bags, shortening their service life, and causing secondary dust generation, thereby affecting the dust removal efficiency.

[0005] A bag dust collector with a self-cleaning function includes a mounting frame, an outer shell, an air inlet pipe, an air outlet pipe, an ash hopper, a valve and a baffle. The outer shell is connected to the mounting frame, the air inlet pipe and the air outlet pipe are respectively connected to both sides of the outer shell and kept in communication, the ash hopper is connected to the bottom of the outer shell and kept in communication, the valve is installed at the bottom of the ash hopper, and the baffle is connected to the inner wall of the outer shell. It also includes a controller, a mounting plate, filter bags, connecting springs, a placement frame, a counterweight, a toggle assembly, a sealing assembly and a separation mechanism. The controller is installed on the side of the mounting frame, the mounting plate is connected to the inner wall of the outer shell, the filter bags are placed on the mounting plate at intervals, the placement frame is installed at the bottom of the mounting plate at intervals through connecting springs, and the connecting springs are distributed around the filter bags, the counterweight is placed in the placement frame, and the counterweight is connected to the bottom of the filter bag, the toggle assembly is used to toggle the placement frame to move, so that the connecting spring is first deformed and then reset to drive the filter bag to vibrate, the sealing assembly is used to seal the inside of the outer shell, and the separation mechanism is used to separate the filter bags.

[0006] Further explanation: the toggle assembly includes a drive motor, a rotating rod, a contact rod and a contact plate. The drive motor is installed at intervals on the side of the shell, the rotating rod is rotatably connected to the shell at intervals, and the end of the rotating rod is connected to the output shaft of the drive motor, the contact rod is connected to the bottom of the placement frame, and the contact plate is connected to the rotating rod, and the contact plate can contact and cooperate with the contact rod as the rotating rod rotates.

[0007] Further description, the sealing assembly includes a rotating cover plate and a sealing strip, the rotating cover plate is rotatably connected to the outer shell, the sealing strip is connected to the rotating cover plate, and the sealing strip is in contact with the inner wall of the outer shell.

[0008] Further explanation: the partition mechanism includes a partition, a guide rod, a conical frame, a baffle frame and a moving assembly. The partition is connected to the inner wall of the outer shell at intervals, and the filter bag is located between two adjacent partitions. The guide rod is connected to the inner shell, the conical frame is slidably connected to the guide rod, and the top of the conical frame contacts the bottom of the partition. The baffle frame is connected to the inner wall of the ash hopper, the baffle frame blocks the bottom of the conical frame, and square holes are spaced apart on the baffle frame. The moving assembly is used to drive the conical frame to move along the guide rod.

[0009] Further explanation: the moving assembly includes a servo motor and a screw rod. The servo motor is installed on the side of the shell. The screw rod is rotatably connected to the shell. The end of the screw rod is connected to the output shaft of the servo motor, and the screw rod is threadedly connected to the tapered frame.

[0010] Further description, it also includes a linear motor, a lifting frame and a first brush. The linear motor is installed at intervals at the bottom of the mounting plate, the lifting frame is connected to the mover of the linear motor, the first brush is connected to the lifting frame at intervals, and the first brush contacts the outer surface of the filter bag.

[0011] Further description, it also includes a heating pipe, which is symmetrically installed on the partition.

[0012] Further description, it also includes an arc block and a second brush. The arc block is symmetrically connected to both sides of the conical frame, the second brush is connected to the bottom of the arc block, and the second brush is in contact with the outer surface of the screw rod.

[0013] The beneficial effects of the present invention are: 1. The present invention can control the filter bag to vibrate back and forth through the cooperation of the placement frame, counterweight block, contact rod and contact plate to shake off the dust adhering to the outer surface of the filter bag. Compared with the existing pulse cleaning method, it can not only reduce the stress fatigue of the filter bag material caused by rapid expansion and contraction, effectively delay the aging process of the filter bag, but also significantly increase the service life of the filter bag, reduce maintenance costs and replacement frequency.

[0014] 2. The present invention can clean some filter bags separately without stopping the machine through the function of the separation mechanism. During the cleaning process, dust can effectively fall off the surface of the filter bag and fall directly into the ash hopper below without being blown up again due to the action of the airflow, thereby avoiding the problem of secondary dust. In addition, the introduction of the first brush can further enhance the cleaning effect of the dust on the outer surface of the filter bag, ensure continuous and efficient filtering performance, and improve the operating efficiency and stability of the entire dust removal system.

[0015] 3. The present invention can reduce the humidity of the gas to be treated in a high humidity environment through the function of the heating tube, prevent dust adhesion, simplify the cleaning process, and improve the operational convenience and adaptability of the equipment. In addition, the design of the sealing component can ensure the sealing inside the shell, help maintain the system pressure, improve the overall working efficiency, and also facilitate the replacement of the filter bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a cross-sectional view of the housing of the present invention.

[0018] Figure 3 It is a schematic diagram of the specific structure of the filter bag and the counterweight block of the present invention.

[0019] Figure 4 Schematic diagram of the installation of the contact rod and the contact plate of the present invention.

[0020] Figure 5 This is a schematic diagram of the installation of the separation mechanism of the present invention.

[0021] Figure 6 Schematic diagram of the specific structure of the mobile component of the present invention.

[0022] Figure 7 This is a schematic diagram of the installation of the linear motor and lifting frame of the present invention.

[0023] Figure 8It is a schematic diagram of the specific structure of the linear motor, lifting frame and first brush of the present invention.

[0024] Figure 9 This is a schematic diagram of the installation of the heating tube of the present invention.

[0025] Figure 10 This is a schematic diagram of the installation of the arc block and the second brush of the present invention.

[0026] In the above drawings: 1-installation frame, 2-housing, 3-inlet pipe, 4-outlet pipe, 5-ash hopper, 6-valve, 7-baffle, 8-controller, 9-mounting plate, 10-filter bag, 11-connecting spring, 12-placement frame, 13-counterweight, 14-drive motor, 15-rotating rod, 16-contact rod, 17-contact plate, 18-rotating cover, 19-sealing strip, 20-partition, 21-guide rod, 22-tapered frame, 23-baffle, 2301-square hole, 24-servo motor, 25-screw, 26-linear motor, 27-lifting frame, 28-first brush, 29-heating tube, 30-arc block, 31-second brush. DETAILED DESCRIPTION

[0027] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and will fully convey the scope of the invention to those skilled in the art.

[0028] Example: A bag dust collector with self-cleaning function, such as Figures 1-6The hopper 5 is connected to the air inlet pipe 3 and the air outlet pipe 4 is connected to the air inlet pipe 3. The hopper 5 is connected to the air inlet pipe 3 and the air outlet pipe 4 is connected to the air inlet pipe 3. The hopper 5 is connected to the air inlet pipe 3 and the air outlet pipe 4 is connected to the air inlet pipe 3. The hopper 5 is connected to the air inlet pipe 3 and the air outlet pipe 4 is connected to the air inlet pipe 3. The hopper 5 is connected to the air inlet pipe 3 and the air outlet pipe 4 is connected to the air inlet pipe 3. The hopper 5 is connected to the air inlet pipe 3 and the air outlet pipe 4 is connected to the air inlet pipe 3. The hopper 5 is connected to the air inlet pipe 3 and the air outlet pipe 4 is connected to the air inlet pipe 3. The hopper 5 is connected to the air inlet pipe 3 and the air outlet pipe 4 is connected to the air inlet pipe 3. The hopper 5 is connected to the air inlet pipe 3 and the air outlet pipe 4 is connected to the air inlet pipe 3. The hopper 5 is connected to the air inlet pipe 3 and the air outlet pipe 4 is connected to the air inlet pipe 3. The hopper 5 is connected to the air inlet pipe 3 and the air outlet pipe 4 is connected to the air inlet pipe 3. The hopper 5 is connected to the air inlet pipe 3 and the air outlet pipe 4 is connected to the air inlet pipe 3. The filter bag 10 is arranged in a 3*3 pattern and is divided into three groups, with three filter bags 10 aligned horizontally forming one group. Nine groups of connecting springs 11 are evenly spaced apart and connected to the bottom of the mounting plate 9. The nine groups of connecting springs 11 correspond to the nine filter bags 10 one by one. The number of each group of connecting springs 11 is four, and the four connecting springs 11 are respectively located on the front, back, left and right sides of the corresponding filter bag 10. A placement frame 12 is connected between the lower ends of the four connecting springs 11, and a counterweight 13 is placed in each placement frame 12. The counterweight 13 is connected to the bottom of the filter bag 10. The toggle assembly is used to toggle the placement frame 12 to move, so that the connecting spring 11 is first deformed and then reset to drive the filter bag 10 to vibrate. The sealing assembly is used to seal the inside of the outer shell 2, and the separation mechanism is used to separate the groups of filter bags 10.

[0029] like Figure 2 and Figure 4 As shown, the toggle assembly includes a drive motor 14, a rotating rod 15, a contact rod 16 and a contact plate 17. Three drive motors 14 are connected to the lower right side of the shell 2 at intervals from front to back, and three rotating rods 15 are connected to the lower inner side of the shell 2 at intervals from front to back, and the right end of the rotating rod 15 is connected to the output shaft of the drive motor 14. A contact rod 16 is connected to the bottom of each placement frame 12, and a contact plate 17 is connected to the three rotating rods 15. The contact plate 17 can contact and cooperate with the contact rod 16 as the rotating rod 15 rotates.

[0030] like Figure 2 As shown, the sealing assembly includes a rotating cover 18 and a sealing strip 19. The rotating cover 18 is rotatably connected to the upper rear side of the shell 2, and the rotating cover 18 covers the top of the shell 2. The sealing strip 19 is connected to the rotating cover 18, and the sealing strip 19 contacts the upper inner wall of the shell 2.

[0031] like Figure 5 and Figure 6As shown, the partition mechanism includes a partition 20, a guide rod 21, a conical frame 22, a baffle 23 and a moving component. Four partitions 20 are connected to the left side of the inner wall of the shell 2 from front to back. Three groups of filter bags 10 are respectively located between each two adjacent partitions 20, and the top of the partition 20 is connected to the bottom of the mounting plate 9, and the right side of the partition 20 is connected to the left side of the baffle 7. A guide rod 21 is connected to the lower right side of the inner side of the shell 2, and a conical frame 22 is slidably connected to the guide rod 21. The top and bottom of the conical frame 22 are both open designs, and the top of the conical frame 22 is It contacts the bottom of the partition 20, and a baffle frame 23 is connected to the upper inner wall of the ash hopper 5. The top of the baffle frame 23 can block the bottom of the conical frame 22. Two square holes 2301 are symmetrically opened on the baffle frame 23. The moving assembly is used to drive the conical frame 22 to move along the guide rod 21; the moving assembly includes a servo motor 24 and a screw rod 25. The servo motor 24 is connected to the lower left front side of the outer shell 2, and the screw rod 25 is rotatably connected to the lower left inner side of the outer shell 2. The front end of the screw rod 25 is connected to the output shaft of the servo motor 24, and the screw rod 25 is threadedly connected to the lower part of the conical frame 22.

[0032] like Figure 7 and Figure 8 As shown, it also includes a linear motor 26, a lifting frame 27 and a first brush 28. Three linear motors 26 are installed at intervals from front to back on the left side of the bottom of the mounting plate 9. The movers of the three linear motors 26 are connected to the lifting frames 27. The three lifting frames 27 correspond to the three groups of filter bags 10 one by one, and three groups of first brushes 28 are connected to the three lifting frames 27 at circumferential intervals. Each group of first brushes 28 corresponds to each filter bag 10 one by one, and the first brushes 28 are in contact with the outer surface of the corresponding filter bag 10.

[0033] like Figure 9 and Figure 10 As shown, it also includes a heating tube 29, an arc block 30 and a second brush 31. A heating tube 29 is symmetrically installed on each partition 20. The left parts of the front and rear sides of the conical frame 22 are connected to the arc blocks 30. The bottoms of the two arc blocks 30 are connected to the second brush 31, and the second brush 31 is in contact with the outer surface of the screw rod 25.

[0034] First, the gas to be treated is transported into the housing 2 through the air inlet pipe 3. The baffle 7 will block the gas to be treated, so that the gas to be treated can first flow downward, bypass the bottom of the baffle 7 and reach the bottom of the filter bag 10. Then the gas to be treated will flow upward through the filter bag 10. The filter bag 10 can filter the gas to be treated, and the filtered dust will fall into the ash hopper 5 due to gravity. Finally, the filtered gas will be discharged to the outside through the air outlet pipe 4 and collected manually. When the filter bag 10 needs to be cleaned, the servo motor 24 is first controlled by the controller 8 to drive the screw rod 25 to rotate. The screw rod 25 can drive the conical frame 22 to move along the guide rod 21, so that the top of the conical frame 22 is vertically aligned with a group of filter bags 10 located on the front side. At this time, the conical frame 22 is The top of the frame 22 is located directly below the group of filter bags 10 on the front side, and the top of the baffle frame 23 can block the bottom of the conical frame 22. The shell 2, the baffle 7, the mounting plate 9, the two partitions 20 on the front side and the baffle frame 23 can surround the group of filter bags 10 on the front side, so that the group of filter bags 10 on the front side are located in a closed space. The gas to be treated no longer passes through the group of filter bags 10 on the front side, and the remaining two groups of filter bags 10 will continue to complete the filtering work of the gas to be treated. Then, the controller 8 controls the front drive motor 14 to drive the front rotating rod 15 to rotate. The front rotating rod 15 can drive the front contact plate 17 to rotate. When the front contact plate 17 contacts the front contact rod 16, the front contact plate 17 will squeeze the front contact rod 16 to move backward. The front contact rod 16 can drive the front placement frame 12 to move backward, causing the front connecting spring 11 to bend backward and deform. When the front contact plate 17 is separated from the front contact rod 16, the front connecting spring 11 will return to its original shape, driving the front placement frame 12 and the front contact rod 16 to move forward and reset. Under the elastic action of the connecting spring 11, the front placement frame 12 will vibrate back and forth. The front placement frame 12 can drive the front counterweight 13 and the lower end of the front filter bag 10 to vibrate back and forth, thereby shaking off the dust adhering to the outer surface of the front filter bag 10. At the same time, the front linear motor 26 can be controlled by the controller 8 to drive the front lifting frame 27 and the front first brush 28 to reciprocate up and down, and the front The first brush 28 on the side can scrape off the dust adhering to the outer surface of the front filter bag 10, ensuring the cleaning effect of the front filter bag 10. The cleaned dust will fall down on the top of the baffle frame 23, and then the servo motor 24 is controlled by the controller 8 to drive the screw rod 25 to rotate. The screw rod 25 can drive the conical frame 22 to continue to move along the guide rod 21. When the bottom of the conical frame 22 is aligned with the square hole 2301, the conical frame 22 can scrape off the dust remaining on the top of the baffle frame 23 and drop it into the ash hopper 5. When the top of the conical frame 22 is vertically aligned with the group of filter bags 10 located in the middle, the conical frame 22 stops moving. Repeat the above operation to separate the group of filter bags 10 located in the middle and clean them separately. The other two groups of filter bags 10 can perform filtering work normally.When the humidity of the gas to be treated is too high, the heating tube 29 can be controlled by the controller 8 to work, so that the temperature inside the shell 2 can be increased, and the humidity of the gas to be treated can be reduced to prevent the dust in the gas to be treated from firmly adhering to the outer surface of the filter bag 10 due to the high humidity, so that the dust adhering to the outer surface of the filter bag 10 can be cleaned later; in the process of moving back and forth, the conical frame 22 will drive the arc block 30 and the second brush 31 to move back and forth, and the second brush 31 can clean the outer surface of the screw rod 25 to prevent dust from adhering to the thread groove of the screw rod 25, ensuring that the conical frame 22 can move smoothly; when the filter bag needs to be cleaned When replacing filter bag 10, the rotating cover 18 can be rotated upward to open it, and then the filter bag 10 can be pulled upward to remove it, so that the filter bag 10 is separated from the mounting plate 9. The filter bag 10 will drive the counterweight 13 to move upward and separate from the placement frame 12. Then, a new filter bag 10 can be put into its original position. Under the action of the counterweight 13, the lower end of the filter bag 10 can maintain a vertical downward movement. Subsequently, under the limiting action of the four connecting springs 11, the counterweight 13 can smoothly enter the placement frame 12. Then, the rotating cover 18 can be rotated downward to close it. When the ash hopper 5 is filled with sufficient dust, the valve 6 can be opened to discharge the dust from the ash hopper 5, and finally the valve 6 can be closed.

[0035] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A bag dust collector with a self-cleaning function, comprising a mounting frame (1), a housing (2), an air inlet pipe (3), an air outlet pipe (4), an ash hopper (5), a valve (6) and a baffle (7), wherein the housing (2) is connected to the mounting frame (1), the air inlet pipe (3) and the air outlet pipe (4) are respectively connected to both sides of the housing (2) and are kept in communication, the ash hopper (5) is connected to the bottom of the housing (2) and is kept in communication, the valve (6) is installed at the bottom of the ash hopper (5), and the baffle (7) is connected to the inner wall of the housing (2), characterized in that: The filter bag (10) is also provided with a controller (8), a mounting plate (9), a filter bag (10), a connecting spring (11), a placement frame (12), a counterweight (13), a toggle assembly, a sealing assembly and a separation mechanism. The controller (8) is mounted on the side of the mounting frame (1), the mounting plate (9) is connected to the inner wall of the housing (2), the filter bag (10) is placed on the mounting plate (9) at intervals, the placement frame (12) is installed at the bottom of the mounting plate (9) at intervals through the connecting spring (11), and the connecting spring (11) is distributed around the filter bag (10), the counterweight (13) is placed in the placement frame (12), and the counterweight (13) is connected to the bottom of the filter bag (10), the toggle assembly is used to toggle the placement frame (12) to move, so that the connecting spring (11) is first deformed and then reset to drive the filter bag (10) to vibrate, the sealing assembly is used to seal the inside of the housing (2), and the separation mechanism is used to separate the filter bag (10); The toggle assembly includes a drive motor (14), a rotating rod (15), a contact rod (16) and a contact plate (17), wherein the drive motor (14) is installed at intervals on the side of the housing (2), the rotating rod (15) is connected to the housing (2) in an interval rotation manner, and the end of the rotating rod (15) is connected to the output shaft of the drive motor (14), the contact rod (16) is connected to the bottom of the placement frame (12), and the contact plate (17) is connected to the rotating rod (15), and the contact plate (17) can contact and cooperate with the contact rod (16) when the rotating rod (15) rotates; The partition mechanism includes a partition (20), a guide rod (21), a conical frame (22), a baffle (23) and a moving assembly, wherein the partition (20) is connected to the inner wall of the housing (2) at intervals, and the filter bag (10) is located between two adjacent partitions (20), the guide rod (21) is connected to the housing (2), the conical frame (22) is slidably connected to the guide rod (21), and the top of the conical frame (22) contacts the bottom of the partition (20), the baffle (23) is connected to the inner wall of the ash hopper (5), the baffle (23) blocks the bottom of the conical frame (22), and the baffle (23) is spaced apart with square holes (2301), and the moving assembly is used to drive the conical frame (22) to move along the guide rod (21); The filter bag (10) further comprises a linear motor (26), a lifting frame (27) and a first brush (28), wherein the linear motor (26) is installed at intervals on the bottom of the mounting plate (9), the lifting frame (27) is connected to the mover of the linear motor (26), and the first brush (28) is connected to the lifting frame (27) at intervals, and the first brush (28) contacts the outer surface of the filter bag (10).

2. A bag dust collector with self-cleaning function according to claim 1, characterized in that: The sealing assembly includes a rotating cover plate (18) and a sealing strip (19). The rotating cover plate (18) is rotatably connected to the outer shell (2). The sealing strip (19) is connected to the rotating cover plate (18), and the sealing strip (19) contacts the inner wall of the outer shell (2).

3. A bag filter with self-cleaning function according to claim 1, characterized in that: The moving assembly includes a servo motor (24) and a screw rod (25), the servo motor (24) is mounted on the side of the housing (2), the screw rod (25) is rotatably connected to the housing (2), the end of the screw rod (25) is connected to the output shaft of the servo motor (24), and the screw rod (25) is threadedly connected to the tapered frame (22).

4. A bag filter with self-cleaning function according to claim 1, characterized in that: It also includes a heating tube (29), which is symmetrically mounted on the partition (20).

5. The bag filter with self-cleaning function according to claim 3, characterized in that: It also includes an arc block (30) and a second brush (31), wherein the arc block (30) is symmetrically connected to both sides of the conical frame (22), the second brush (31) is connected to the bottom of the arc block (30), and the second brush (31) contacts the outer surface of the screw rod (25).

Images