Rotary cloth bag dust removal device

Abstract

The utility model relates to a rotary type cloth bag dust removal device which comprises a cloth bag cylinder and a mounting cavity used for mounting the cloth bag cylinder, one end of the cloth bag cylinder is connected with an air inlet pipe, one end of the cloth bag cylinder far away from the air inlet pipe is provided with a connecting disc, the connecting disc is connected with a motor used for driving the connecting disc to rotate, one side of the mounting cavity is provided with an exhaust pipe, and the exhaust pipe is connected with the air inlet pipe. One side, away from the exhaust pipe, of the mounting cavity is provided with a blast piece; a baffle is arranged in the middle of the mounting cavity, the mounting cavity is divided into a first cavity body and a second cavity body by the baffle when the cloth bag cylinder is mounted in the mounting cavity, the exhaust pipe is communicated with the first cavity body, and the air blowing piece is communicated with the second cavity body; according to the utility model, through rotation of the cloth bag cylinder and back blowing of different positions of the cloth bag cylinder by using the air blowing piece, accumulated dust on the side wall of the cloth bag cylinder is effectively removed, the dust removal and ventilation capability of the cloth bag is ensured to be maintained in a relatively high state, a ventilation pause phenomenon does not exist, and stable and continuous exhaust and dust removal can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of bag dust removal, in particular to a rotary bag dust removal device. Background Art

[0002] Bag dust collectors are a very common type of dust removal equipment in industrial production processes and belong to the category of dry dust filtration devices. Bag dust collectors are usually suitable for capturing fine, dry, non-fibrous dust. Bag dust collectors are equipped with bags made of textile filter cloth or non-woven felt inside. When the dust-laden air is sent into the dust collector through the air inlet pipe, the dust-laden air passes through the bags. Dust particles with large specific gravity settle due to gravity and fall into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, and the gas is purified.

[0003] At present, bag dust collectors use bag back-flushing for dust cleaning. Bag back-flushing uses a high-pressure airflow generated by high-pressure pulse air in the opposite direction of the main airflow to rush through the bag to make the bag shake, thereby removing dust accumulated on the surface of the bag. The flakes of dust fall into the ash hopper located at the bottom of the dust collector and are then discharged out of the machine through a discharge device. With the development of technology, back-flushing control is becoming more and more sophisticated. For example, Chinese patent invention patent CN110917750A provides a bag dust removal method and device for a bag dust collector, the method comprising: real-time detection of the working pressure value inside the bag dust collector box; determining a dust removal pressure value according to the working pressure value inside the box when the bag dust collector is working and the working pressure value inside the box before the bag dust collector is working; generating a purge instruction based on the dust removal pressure value, so that the bag back-flushing system arranged in the bag dust collector back-flushes the bag according to the purge instruction to remove dust from the bag. The above invention can improve the dust removal efficiency of the bag while ensuring the life of the bag, ensure the operational reliability of the bag dust collector, and thus greatly improve the service life and utilization efficiency of the bag dust collector.

[0004] However, the above-mentioned bag dust removal method still has the following disadvantages: dust will inevitably accumulate on the surface of the bag, resulting in a significant reduction in the real-time dust removal and ventilation capacity, and backblowing will be performed when the dust removal and ventilation capacity is lower than a certain value. This not only causes the ventilation capacity to fluctuate constantly, but also the dust bag structure will inevitably have a short ventilation pause during backblowing. It cannot be used in places that require stable and continuous exhaust and dust removal. Summary of the Invention

[0005] The purpose of the utility model is to provide a rotary bag dust removal structure with a simple configuration. By rotating the bag tube, the blowing member is used to back-blow different positions of the bag tube, thereby effectively removing dust accumulated on the side wall of the bag tube, ensuring that the ventilation capacity of the bag dust removal is maintained at a high state, and there is no ventilation pause phenomenon, so that the exhaust and dust removal can be stable and continuous.

[0006] The specific solution of the utility model is: a rotary bag dust removal structure, including a bag tube and an installation cavity for installing the bag tube, one end of the bag tube is connected to an air inlet pipe, and an end of the bag tube away from the air inlet pipe is provided with a connecting disk, and the connecting disk is connected to a motor for driving the connecting disk to rotate, an exhaust pipe is provided on one side of the installation cavity, and a blowing member is provided on the other side of the installation cavity.

[0007] Furthermore, a blocking plate is provided in the middle of the installation cavity, so that when the cloth bag tube is installed in the installation cavity, the installation cavity is divided into two parts, a first cavity and a second cavity, the exhaust pipe is connected to the first cavity, and the blowing member is connected to the second cavity.

[0008] Furthermore, the cloth bag tube is connected to the air intake pipe through a bearing ring.

[0009] Furthermore, a support rod for supporting the cloth bag tube is connected between the connecting plate and the bearing ring.

[0010] Furthermore, the support rod includes a first support rod arranged on the outside of the cloth bag tube and a second support rod arranged on the inside of the cloth bag tube.

[0011] Furthermore, the installation cavity is provided with a first opening for facilitating the installation of the connecting plate and a second opening for facilitating the installation of the bearing ring.

[0012] Furthermore, a dust exhaust hole is provided on the connecting plate, and a threaded cover is provided on the dust exhaust hole.

[0013] Furthermore, the height of one end of the bag tube close to the connecting plate is not higher than the height of one end of the bag tube close to the air inlet pipe.

[0014] Furthermore, the motor is connected to the connecting disk via a motor shaft, and an absolute encoder is connected to the motor shaft.

[0015] Furthermore, an air flow sensor is provided in the exhaust pipe, and the motor and the blowing member are electrically connected to the air flow sensor through a controller.

[0016] The utility model has the following beneficial effects: simple setting, through the rotation of the bag tube, and then using the blowing member to back-blow the bag tube at different positions, the dust accumulated on the side wall of the bag tube is effectively removed, ensuring that the bag dust removal ventilation capacity is maintained at a high state, and there is no ventilation pause phenomenon, which can stably and continuously exhaust and remove dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0018] Figure 2 It is the main view of the utility model;

[0019] Figure 3 This is a structural diagram of the connecting disc and the bearing ring of the utility model;

[0020] Figure 4 It is a side view of the utility model;

[0021] In the figure: 1. Bag tube, 11. Connecting plate, 111. Dust exhaust hole, 12. Bearing ring, 13. Support rod, 131. First support rod, 132. Second support rod, 2. Mounting cavity, 201. First cavity, 202. Second cavity, 21. Exhaust pipe, 211. Air flow sensor, 22. Blowing part, 3. Inlet pipe, 4. Motor, 41. Motor shaft, 42. Absolute encoder. DETAILED DESCRIPTION

[0022] Example 1

[0023] See also Figure 1-4 The present embodiment is a rotary bag dust removal device, a rotary bag dust removal structure, comprising a bag tube 1 and a mounting cavity 2 for mounting the bag tube 1, one end of the bag tube 1 being connected to an air intake pipe 3, an end of the bag tube 1 away from the air intake pipe 3 being provided with a connecting disk 11, the connecting disk 11 being connected to a motor 4 for driving the connecting disk 11 to rotate, an exhaust pipe 21 being provided on one side of the mounting cavity 2, and a blowing member 22 being provided on the other side of the mounting cavity 2.

[0024] The installation cavity 2 is a sealed cavity, the cloth bag tube 1 is arranged in the installation cavity 2, the air intake pipe 3 is connected to the cloth bag tube 1 from one side of the installation cavity 2, and a connecting plate 11 is provided at the end of the cloth bag tube 1 away from the air intake pipe 3, and an exhaust pipe 21 and a blowing member 22 are respectively provided on both sides of the installation cavity 2.

[0025] The connecting plate 11 and the air inlet pipe 3 are respectively arranged at both ends of the bag tube 1, so that the connecting plate 11 and the air inlet pipe 3 are roughly in the same axial direction as the bag tube 1; the exhaust pipe 21 and the blowing piece 22 are respectively arranged on both sides of the installation cavity 2, and the exhaust pipe 21 and the blowing piece 22 are generally extended in the radial direction of the bag tube 1.

[0026] Specifically, the dust-laden air flows into the bag tube 1 from one end of the bag tube 1 through the air inlet pipe 3, and then passes through the filter bag from the bag tube 1 to reach the installation cavity 2 outside the bag tube 1, and finally the clean air reaches the exhaust pipe 21 from the installation cavity 2 and is discharged.

[0027] The blowing piece 22 can blow out air, which passes through the bag tube 1 and then reaches the exhaust pipe 21. There are two ways of using it here. The first is that the air inlet pipe 3 has its own fan to make the dust-laden air flow, and the blowing piece 22 plays the role of blowing the side wall of the bag tube 1 to blow off the dust accumulated on the side wall of the bag tube 1 to prevent the dust from clogging the bag; the second is that there is no fan in the air inlet pipe 3 or the fan is not started. Since the blowing piece 22 is directly arranged in a straight line with the exhaust pipe 21, when the air blown by the blowing piece 22 passes through the bag tube 1 and flows to the exhaust pipe 21, the pressure at the end of the air inlet pipe 3 close to the bag tube 1 is less than the pressure at the end of the air inlet pipe 3 away from the bag tube 1, and the atmospheric pressure is used to drive the dust-laden air in the air inlet pipe 3 to flow toward the bag tube 1. Generally speaking, the fan in the air intake pipe 3 is started when the dust removal pressure is high; conversely, the fan in the air intake pipe 3 does not need to be started when the dust removal pressure is low. In other words, when the device of the present invention is used for dust removal in an environment with low dust removal pressure, there is no need to install a fan in the air intake pipe 3.

[0028] The connecting disk 11 is connected to a motor 4 for driving the connecting disk 11 to rotate. The connecting disk 11 is coaxially arranged with the bag tube 1. The rotation of the motor 4 can drive the connecting disk 11 to drive the bag tube 1 to rotate around the central axis of the bag tube 1, so that the blowing member 22 blows air to different positions of the bag tube 1.

[0029] If the blowing member 22 is located at the lower side of the bag tube 1 and the exhaust pipe 21 is located at the upper side of the bag tube 1, after a period of dust filtering operation, dust will inevitably accumulate on the upper inner wall of the bag tube 1. At this time, the bag tube 1 rotates under the drive of the motor 4, so that the dust-accumulated side of the bag tube 1 reaches the bottom. At this time, the blowing member 22 can effectively remove the accumulated dust.

[0030] In actual use, the blower 22 and the motor 4 can cooperate in two ways:

[0031] The first is that the motor 4 rotates continuously, driving the bag drum 1 to rotate continuously, and the blowing member 22 works continuously. The blowing member 22 continuously cleans the side of the bag drum 1 close to the blowing member 22 to ensure the dust removal and filtration stability of the bag drum 1. At this time, the blowing member 22 just serves as the power source for the dust-blowing air flow (there is no fan in the air inlet pipe 3 or the fan is not started);

[0032] The second method is that the motor 4 rotates a certain angle at regular intervals, and the blowing member 22 does not need to work continuously. Only after the motor 4 has finished rotating, the blowing member 22 starts to clean the side of the bag tube 1 close to the blowing member 22. The common method is that at regular intervals, the motor 4 drives the bag tube 1 to rotate 180°, so that the dust accumulation side and the dust cleaning side of the bag tube 1 are reversed, and the blowing member 22 starts to clean the dust accumulation side of the bag tube 1 to ensure the dust removal and filtration stability of the bag tube 1.

[0033] Both methods can ensure that the bag tube 1 can filter dust continuously and stably, and the cleaning of the side wall of the bag tube 1 does not affect the air flow, and can perform stable and continuous dust removal in the dust removal area.

[0034] Example 2

[0035] This embodiment adds the following features to the first embodiment: a baffle plate 23 is provided in the middle of the installation chamber 2, so that when the bag tube 1 is installed in the installation chamber 2, the installation chamber 2 is divided into a first cavity 201 and a lower cavity 202. The exhaust pipe 21 is connected to the first cavity, and the blowing member 22 is connected to the second cavity. There are two baffle plates 23, and the end of the baffle plate 23 close to the bag tube 1 is arc-shaped, just fitting with the outer wall of the bag tube 1, so that the baffle plate 23 and the bag tube 1 just divide the installation chamber 2 into two parts. The air blown by the blowing member 22 must pass through the bag tube 1 before reaching the exhaust pipe 21, which improves the dust cleaning effect.

[0036] The cloth bag drum 1 is connected to the air intake pipe 3 through a bearing ring 12. The air intake pipe 3 is relatively long and is not necessarily arranged in a straight line, so that the air intake pipe 3 cannot rotate with the cloth bag drum 1, so that the cloth bag drum 1 can be stably connected to the air intake pipe 3 through the bearing ring 12 when it rotates.

[0037] An air flow sensor 211 is installed in the exhaust pipe 21. The motor 4 and the blower 22 are both electrically connected to the air flow sensor 211 via a controller. As the motor 4 rotates a certain angle at regular intervals, the air flow sensor 211 measures the air flow in the exhaust pipe 21 in real time. If the air flow decreases, indicating a serious accumulation of dust on the dust-accumulating side of the bag tube 1, the controller controls the motor 4 to rotate in advance, moving the dust-accumulating side closer to the blower 22, which activates the blower 22 to remove the accumulated dust.

[0038] A support rod 13 for supporting the bag tube 1 is connected between the connecting plate 11 and the bearing ring 12, and is used to support the bag tube 1 to prevent the bag tube 1 from abnormal deformation.

[0039] The support rod 13 includes a first support rod 131 arranged on the outside of the bag tube 1 and a second support rod 132 arranged on the inside of the bag tube 1. The first support rod 131 is located on the outside of the bag tube 1 to prevent the bag tube 1 from deforming abnormally outward; the second support rod 132 is located on the inside of the bag tube 1 to prevent the bag tube 1 from collapsing abnormally. Of course, there are many first support rods 131 and second support rods 13, which are evenly arranged on the circumference of the bag tube 1. The mounting cavity 2 is provided with a first opening for facilitating the installation of the connecting disk 11 and a second opening for facilitating the installation of the bearing ring 12, that is, the connecting disk 11 is just clamped at the first opening, and an annular groove for connecting to the first opening is provided on the outside of the connecting disk 11. Similarly, the bearing ring 12 is just clamped at the second opening, and an annular groove for connecting to the second opening is provided on the outside of the bearing ring 12. Sealing connection pads or sealing connection bearings are provided on the inside of the first opening and the second opening.

[0040] In the present invention, a dust exhaust hole 111 is provided on the connecting disk 11, and a threaded cover is provided on the dust exhaust hole 111. The threaded cover is threadedly sealed to the dust exhaust hole 111. At intervals, the threaded cover of the dust exhaust hole 111 is unscrewed to open the dust exhaust hole 111 and discharge the dust accumulated in the bag tube 1.

[0041] There are multiple dust exhaust holes 111 and they are evenly arranged around the center of the connecting disk 11. It is best that the dust exhaust holes 111 are directly connected to the outer edge of the bag tube 1, and the height of the end of the bag tube 1 close to the connecting disk 11 is not higher than the height of the end of the bag tube 1 close to the air inlet pipe 3. Once the threaded cover is opened, the dust can be directly discharged from the dust exhaust hole 111 under gravity.

[0042] The motor 4 is connected to the connecting disk 11 through the motor shaft 41. The motor shaft 41 is connected to an absolute encoder 42, which is electrically connected to the controller. The absolute encoder 42 can obtain the rotation angle of the motor shaft 41, thereby obtaining the rotation angle of the bag tube 1, making it convenient for the controller to obtain the rotation status of the bag tube 1 and send it to the controller, and the controller then controls the motor 4 and the blowing member 22 to work.

Claims

1. A rotary bag dust removal device, characterized by: It includes a cloth bag tube and an installation cavity for installing the cloth bag tube, one end of the cloth bag tube is connected to an air inlet pipe, and a connecting disk is provided at the end of the cloth bag tube away from the air inlet pipe, and the connecting disk is connected to a motor for driving the connecting disk to rotate, an exhaust pipe is provided on one side of the installation cavity, and a blowing member is provided on the side of the installation cavity away from the exhaust pipe; a baffle is provided in the middle of the installation cavity, and the baffle divides the installation cavity into a first cavity and a second cavity when the cloth bag tube is installed in the installation cavity, the exhaust pipe is connected to the first cavity, and the blowing member is connected to the second cavity.

2. A rotary bag dust removal device according to claim 1, characterized in that: The cloth bag tube is connected to the air inlet pipe through a bearing ring; a support rod for supporting the cloth bag tube is connected between the connecting plate and the bearing ring.

3. The rotary bag dust removal device according to claim 2, characterized in that: The support rods include a first support rod arranged outside the bag tube and a second support rod arranged inside the bag tube.

4. The rotary bag dust removal device according to claim 2, characterized in that: The installation cavity is provided with a first opening for installing the connecting disc and a second opening for installing the bearing ring.

5. The rotary bag dust removal device according to claim 1, characterized in that: The connecting plate is provided with a dust discharge hole, and the dust discharge hole is provided with a threaded cover.

6. The rotary bag dust removal device according to claim 1, characterized in that: The motor is connected to the connecting disk via a motor shaft, and an absolute value encoder is connected to the motor shaft.

7. The rotary bag dust removal device according to claim 1, characterized in that: An air flow sensor is provided in the exhaust pipe, and the motor and the air blowing member are electrically connected to the air flow sensor through a controller.

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