A dust cleaning device for bag filter

Abstract

The present invention relates to the technical field of dust removal equipment, and proposes a dust cleaning device for a bag filter, which is used for cleaning the bag. The adsorption tube is movably arranged to adsorb the middle part of the bottom of the bag, and the convex part of the bag that is sucked is the sucked part; the first support frame is annular and is located at the bottom of the bag, and the outer diameter of the first support frame is the same as the inner diameter of the bag; a plurality of rod frames are arranged circumferentially inside the bag, and the rod frame has a first rod portion and a second rod portion, and the second rod portion is movably arranged inside the first rod portion; one end of the first elastic member is arranged inside the first rod portion, and the other end is arranged on the second rod portion, which is used to provide a force for the second rod portion to move out of the first rod portion. Through the above technical scheme, the problem that the bottom of the bag is more likely to accumulate solid dust quickly and deposit and harden, which is difficult to clean, is solved in the prior art, which increases the air resistance of the bag as a whole, causes an increase in pressure drop, and affects the dust removal and filtration efficiency of the bag filter.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal equipment, and in particular to a dust cleaning device for a bag dust collector. Background Art

[0002] Bag dust collector is a kind of high-efficiency air purification equipment widely used in industrial production process. It captures solid particles in the air by filtering bags, so as to purify the gas. However, in practical application, bag dust collector faces a common problem: because the bottom of the bag is close to the gas inlet, the flow wind force in this area is relatively large, making it easier for solid dust particles to accumulate and harden quickly, increasing the overall air resistance, causing an increase in pressure drop, and affecting the dust removal and filtration efficiency of the bag dust collector. In order to solve this problem, pulse spraying and mechanical vibration are usually used for dust cleaning.

[0003] Pulse jetting is to set a nozzle above the bag opening, and use the high-pressure airflow generated by the instantaneous release of compressed air to impact the inner wall of the bag to remove the dust attached to it. However, this method has certain limitations: on the one hand, due to the nozzle position far away from the bottom of the bag, coupled with the influence of the bag opening, the effective airflow reaching the bottom becomes more scattered and insufficient, making it difficult to effectively remove the dust accumulated at the bottom; on the other hand, if you try to increase the intensity of the jetting to enhance the dust cleaning effect, it may cause excessive airflow, which may cause local wear on the bag over a long period of time, thereby affecting the filtration efficiency and service life of the entire system.

[0004] Mechanical vibration is to periodically vibrate the bag to remove the dust adhering to its surface. Although this method can alleviate the problem of dust accumulation to a certain extent, there are also some problems that cannot be ignored: for certain types of dust or when the dust layer is thick, relying solely on mechanical vibration may not be able to completely remove all the accumulated dust, especially those parts that have been consolidated into blocks. The mechanical vibration process will generate a lot of noise, which has potential adverse effects on the working environment and the health of operators.

[0005] In summary, the existing methods for solving the problem of dust accumulation at the bottom of bag filters have their own advantages and disadvantages. Therefore, the development of new technologies that are more efficient, reliable and environmentally friendly has become an important direction of current research. Summary of the invention

[0006] The present invention proposes a dust cleaning device for a bag dust collector, which solves the problem that solid dust is more likely to accumulate quickly and harden at the bottom of the bag, making it difficult to clean, thereby increasing the overall air resistance of the bag, causing an increase in pressure drop, and affecting the dust removal and filtration efficiency of the bag dust collector.

[0007] The technical solution of the present invention is as follows: A dust cleaning device for a bag filter, used for cleaning the bag, comprising:

[0008] The adsorption tube is movably arranged and located inside the cloth bag, and has an adsorption end. After the adsorption tube moves, the adsorption end approaches or moves away from the bottom of the cloth bag, and is used to adsorb the middle part of the bottom of the cloth bag. The convex part of the cloth bag that is sucked is the sucked part;

[0009] A first support frame, which is annular and located at the bottom of the cloth bag, and the outer diameter of the first support frame is the same as the inner diameter of the cloth bag;

[0010] A rod frame, wherein the rod frame has a plurality of rod frames, one end of the rod frame is arranged on the first support frame, and the other end is arranged vertically along the inner wall of the cloth bag, and the plurality of rod frames are arranged circumferentially inside the cloth bag, and the rod frame is a telescopic structure, having a first rod portion and a second rod portion, and the second rod portion is movably arranged inside the first rod portion;

[0011] A first elastic member, one end of which is arranged in the first rod portion, and the other end of which is arranged on the second rod portion, for providing a force for the second rod portion to move out of the first rod portion.

[0012] Optionally, the rod frame has at least one of the first rod portion and the second rod portion, the first rod portion and the second rod portion both have a rod cavity, and the rod cavities of the first rod portion and the second rod portion are connected to each other;

[0013] One of the first rod parts is arranged on the first supporting frame, and the rod cavity thereof has a first blowing port, and the first blowing port is inclined toward the sucked part.

[0014] Optionally, the outer wall of the first rod portion abuts against the inner wall of the cloth bag, and a gap exists between the outer wall of the second rod portion and the inner wall of the cloth bag, further comprising:

[0015] The second support frame is arranged on the rod frame and is located above the first support frame. The second support frame is annular, and the outer diameter of the second support frame is the same as the inner diameter of the cloth bag.

[0016] Optionally, it also includes:

[0017] A connecting piece, wherein the connecting piece is in plurality and arranged circumferentially on one side of the adsorption tube, one end of the connecting piece is hingedly arranged on the first support frame or the second support frame, and the other end is hingedly arranged on the adsorption tube and has a telescopic section.

[0018] Optionally, the first support frame or the second support frame has an inner cavity, the connecting piece has an air cavity, the air cavity has a second blowing port, the air cavity is connected to the inner cavity of the first support frame, and the second blowing port is used to blow the sucked part, or the air cavity is connected to the inner cavity of the second support frame, and the second blowing port is used to blow the bottom side of the cloth bag or the sucked part.

[0019] Optionally, the connecting member includes a first connecting block and a second connecting block, the second connecting block is slidably arranged on the first connecting block, one end of the first connecting block is rotatably arranged on the first support frame or the second support frame, and the first connecting block has the air cavity and the second blowing port.

[0020] Optionally, the connecting member and the rod frame are arranged at intervals along the circumference, so that the first blowing port and the second blowing port are arranged at intervals along the circumference.

[0021] Optionally, the first connecting block has a notch, and the second connecting block is slidably arranged in the notch, further comprising:

[0022] A second elastic member, one end of which is arranged on the inner wall of the slot, and the other end of which is arranged on the second connecting block, is used to provide a force for the second connecting block to slide into the slot.

[0023] Optionally, it also includes:

[0024] An air cylinder is arranged on the adsorption tube, an air chamber is formed between the air cylinder and the adsorption tube, the air chamber has a plurality of third blowing ports, and the plurality of third blowing ports are arranged at intervals along the height direction. The air cylinder is located above the first support frame or the second support frame.

[0025] Optionally, the first support frame has an arc-shaped transition portion, and the arc-shaped transition portion abuts against the bottom of the cloth bag.

[0026] The working principle and beneficial effects of the present invention are:

[0027] In the present invention, the dust cleaning device of the bag filter is preferably a cylindrical bag to solve the problem of rapid accumulation of solid dust at the bottom and hardening of deposition. The adsorption tube is installed inside the bag and can move in the vertical direction. When moving downward, the adsorption end can approach the center position of the bottom of the bag, and through the action of negative pressure, the middle area of ​​the bottom of the bag is adsorbed to form a convex part, which is the adsorbed part, wherein the movement of the adsorption tube can be driven by a related driving device. The present application provides a solution for the lifting and movement of the adsorption tube. An area can be set on the base frame of the bag filter for installing a linear drive member. The upper part of the adsorption tube extends out of the bag and is fixedly connected by a plate. The linear drive member drives the plate to indirectly drive the adsorption tube to rise and fall.

[0028] The first support frame is an annular structure and is located at the bottom of the bag. The outer diameter matches the inner diameter of the bag to ensure a tight fit. It serves as a basic support platform for fixing and connecting multiple rods. There are multiple rods, which are evenly distributed around the inside of the bag. One end of each rod is fixed to the first support frame, and the other end extends outward along the inner wall of the bag. The rod frame includes a first rod portion and a second rod portion. The second rod portion is movably arranged in the first rod portion, so that the entire rod frame has a telescopic characteristic and adjusts its length synchronously with the position change of the first support frame.

[0029] When the dust cleaning process is started, the adsorption tube is first moved downward to a predetermined position by the driving device. Then, the central part of the bottom of the bag is lifted by the adsorption capacity of the adsorption tube to form a local protrusion (the sucked part). As the adsorption tube continues to rise, the middle protrusion gradually rises, causing the outer bag to gradually move inward and enter the middle area. During this process, the bag passes through the first support frame and applies an upward force to the first support frame. This force causes the first support frame to rise and drives the rod frame connected to the first support frame to shrink synchronously. The first elastic member (such as a spring) inside the rod frame is gradually compressed as the rod frame shrinks, and its rebound force increases accordingly. When the rebound force of the first elastic member and the force applied by the bag to the first support frame reach a balance, the rod frame stops further shrinking, and the height of the sucked part at this time is the maximum height. In order to prevent the cloth bag from continuing to rise and causing the upper fixing part of the cloth bag to loosen, the system design should ensure that the force applied by the cloth bag to the first support frame is slightly higher than the rebound force of the rod frame, that is, under the action of the lifting force of the cloth bag, the rod frame will be in a contracted state. At the same time, under the action of the first elastic member, the outer cloth bag will pass through the first support frame at an acute angle to enter the interior. Its function is: the abutment generated by physical contact, combined with the deformation of the cloth bag, can effectively make the dust blocks on the outer surface of the cloth bag passing through the first support frame fall off or separate.

[0030] In the above solution, the entire system uses adsorption tubes combined with bag deformation technology, which effectively solves the problem that traditional methods are difficult to completely remove hard dust at the bottom. At the same time, the design is compact and reasonable, and it is easy to integrate into existing bag dust collectors. It can be upgraded without major changes to the original structure. Compared with other methods that may consume more energy or generate additional noise pollution, this solution is more in line with the requirements of modern industry for environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0032] Figure 1 This is a schematic diagram of the first arrangement of the dust cleaning device of the present invention in the system;

[0033] Figure 2 It is a second schematic diagram of the arrangement of the dust cleaning device of the present invention in the system;

[0034] Figure 3 This is a schematic structural diagram of the dust cleaning device of the present invention from a first viewing angle (one end of the connecting member is hingedly arranged on the second supporting frame);

[0035] Figure 4 This is a schematic diagram of the structure of the dust cleaning device of the present invention from a second viewing angle (one end of the connecting member is hingedly arranged on the second supporting frame);

[0036] Figure 5 This is a schematic diagram of the adsorption tube of the dust cleaning device of the present invention in a raised state (one end of the connecting piece is hingedly arranged on the second supporting frame);

[0037] Figure 6 for Figure 5 A schematic diagram of the partially enlarged structure of I in the figure;

[0038] Figure 7 It is a schematic diagram of the adsorption tube of the dust cleaning device of the present invention in a raised state from a first viewing angle (one end of the connecting member is hingedly arranged on the first supporting frame);

[0039] Figure 8 It is a schematic diagram of the adsorption tube of the dust cleaning device of the present invention in a raised state from a second viewing angle (one end of the connecting member is hingedly arranged on the first supporting frame);

[0040] Fig. 9 for Figure 8 Schematic diagram of the partial enlarged structure of II;

[0041] Fig.10 This is a line diagram of the adsorption state of the adsorption tube of the present invention;

[0042] Fig.11 It is a structural schematic diagram of the first support frame and the connecting member of the present invention;

[0043] Fig.12 A schematic cross-sectional view of the connector of the present invention;

[0044] Fig.13 It is a schematic diagram of the cross-sectional structure of the adsorption tube and the gas cylinder of the present invention.

[0045] In the figure: 1, cloth bag; 2, adsorption tube; 201, adsorption end; 3, sucked part; 4, first support frame; 401, arc-shaped transition part; 5, rod frame; 501, first rod part; 502, second rod part; 503, rod cavity; 504, first blowing port; 6, first elastic member; 7, second support frame; 8, connecting member; 9, inner cavity; 10, first connecting block; 1001, air cavity; 1002, second blowing port; 1003, notch; 11, second connecting block; 12, second elastic member; 13, gas cylinder; 14, air chamber; 1401, third blowing port; 15, first gas tank; 16, second gas tank; 17, gas supply plate. DETAILED DESCRIPTION

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0047] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0048] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0050] Example 1

[0051] Reference Figure 1~Figure 2 , Figure 7 to Figure 13 , which is the first embodiment of the present invention, proposes a dust cleaning device for a bag 1 dust collector, which is used to clean the bag 1. The adsorption tube 2 is movably arranged and located inside the bag 1. It has an adsorption end 201. After the adsorption tube 2 moves, the adsorption end 201 is close to or away from the bottom of the bag 1, and is used to adsorb the middle part of the bottom of the bag 1. The convex part of the bag 1 to be sucked is the sucked part 3; the first support frame 4, the first support frame 4 is annular, and is located at the bottom of the bag 1. The outer diameter of the first support frame 4 is the same as that of the bag 1 has the same inner diameter; there are a plurality of rod frames 5, one end of the rod frames 5 is arranged on the first support frame 4, and the other end is arranged vertically along the inner wall of the cloth bag 1, and the plurality of rod frames 5 are arranged circumferentially inside the cloth bag 1, the rod frame 5 has a first rod portion 501 and a second rod portion 502, and the second rod portion 502 is movably arranged in the first rod portion 501; one end of the first elastic member 6 is arranged in the first rod portion 501, and the other end is arranged on the second rod portion 502, for providing a force for the second rod portion 502 to move out of the first rod portion 501.

[0052] In this embodiment, the dust cleaning device of the bag 1 dust collector is preferably a cylindrical bag 1 to solve the problem of rapid accumulation of solid dust at the bottom and hardening of the deposition. The adsorption tube 2 is installed inside the bag 1 and can move in the vertical direction. When moving downward, the adsorption end 201 can approach the center position of the bottom of the bag 1, and through the negative pressure, the middle area of ​​the bottom of the bag 1 is adsorbed to form a convex part, which is the adsorbed part 3. The movement of the adsorption tube 2 can be driven by a related driving device. This application provides a solution for the adsorption tube 2 to move up and down, such as Figure 2 As shown, an area can be set up on the base frame of the bag filter 1 for installing a linear drive component. The upper part of the adsorption tube 2 extends out of the bag 1 and is fixedly connected by a plate. The linear drive component drives the plate to indirectly drive the adsorption tube 2 to rise and fall.

[0053] The first support frame 4 is annular in structure and is located at the bottom of the cloth bag 1. The outer diameter matches the inner diameter of the cloth bag 1 to ensure a tight fit. It serves as a basic support platform for fixing and connecting multiple rod frames 5. There are multiple rod frames 5, which are evenly distributed around the inside of the cloth bag 1. One end of each rod frame 5 is fixed to the first support frame 4, and the other end extends outward along the inner wall of the cloth bag 1. The rod frame 5 includes a first rod portion 501 and a second rod portion 502. The second rod portion 502 is movably arranged in the first rod portion 501, so that the entire rod frame 5 has a telescopic characteristic, and the length is adjusted synchronously with the position change of the first support frame 4.

[0054] When the dust cleaning process is started, the adsorption tube 2 is first moved downward to a predetermined position by the driving device. Then, the central part of the bottom of the bag 1 is lifted by the adsorption capacity of the adsorption tube 2 to form a local bulge (absorbed part 3). As the adsorption tube 2 continues to rise, the middle bulge gradually rises, causing the outer bag 1 to gradually move inward and enter the middle area. In this process, the bag 1 passes through the first support frame 4 and applies an upward force to the first support frame 4. This force causes the first support frame 4 to rise and drives the rod frame 5 connected to the first support frame 4 to shrink synchronously. The first elastic member 6 (such as a spring) inside the rod frame 5 is gradually compressed as the rod frame 5 shrinks, and its rebound force increases accordingly. When the rebound force of the first elastic member 6 and the force applied by the bag 1 to the first support frame 4 reach a balance, the rod frame 5 stops further shrinking, and the height of the absorbed part 3 at this time is the maximum height. In order to prevent the upper fixing part of the cloth bag 1 from loosening due to continued rising, the system design should ensure that the force applied by the cloth bag 1 to the first support frame 4 is slightly higher than the rebound force of the rod frame 5, that is, under the action of the lifting force of the cloth bag 1, the rod frame 5 will be in a contracted state. At the same time, under the action of the first elastic member 6, the outer cloth bag 1 will pass through the first support frame 4 at an acute angle to enter the interior. Its function is: the abutment generated by physical contact, combined with the deformation of the cloth bag 1, can effectively make the dust blocks on the outer surface of the cloth bag 1 passing through the first support frame 4 fall off or separate.

[0055] In the above solution, the entire system uses an adsorption tube 2 combined with the bag 1 deformation technology, which effectively solves the problem that traditional methods are difficult to completely remove hard dust at the bottom. At the same time, the design is compact and reasonable, and it is easy to integrate into the existing bag 1 dust collector. It can be upgraded without major changes to the original structure. Compared with other methods that may consume more energy or generate additional noise pollution, this solution is more in line with the requirements of modern industry for environmental protection.

[0056] Furthermore, the rod frame 5 has at least one first rod portion 501 and a second rod portion 502, and the first rod portion 501 and the second rod portion 502 both have a rod cavity 503, and the rod cavities 503 of the first rod portion 501 and the second rod portion 502 are interconnected; one of the first rod portions 501 is arranged on the first support frame 4, and its rod cavity 503 has a first blowing port 504, and the first blowing port 504 is inclined toward the sucked part 3.

[0057] In this embodiment, the first rod portion 501 has a first blowing port 504. Since the second rod portion 502 is movable and arranged inside the first rod portion 501, during the extension and retraction process of the rod frame 5, except for the first rod portion 501 arranged on the first support frame 4, the distance between other parts of the rod frame 5 and the first support frame 4 will change. The first blowing port 504 is fixed on the first rod portion 501 located on the first support frame 4, ensuring the stability and consistency of the blowing airflow, avoiding changes in the blowing angle and intensity caused by the extension and retraction of the rod frame 5, and better controlling the direction and strength of the blowing airflow, ensuring that the blowing airflow is always concentrated on the area that needs cleaning most, thereby improving the cleaning effect. After the outer cloth bag 1 enters the middle part, the volume shrinks, so that the first blowing port 504 can cover a larger range.

[0058] Furthermore, the outer wall of the first rod portion 501 abuts against the inner wall of the cloth bag 1, and there is a gap between the outer wall of the second rod portion 502 and the inner wall of the cloth bag 1. The second support frame 7 is arranged on the rod frame 5 and is located above the first support frame 4. The second support frame 7 is annular, and the outer diameter of the second support frame 7 is the same as the inner diameter of the cloth bag 1.

[0059] In this embodiment, the outer wall of the first rod portion 501 is in close contact with the inner wall of the bag 1, providing support for the bag 1. The second rod portion 502 can move freely in the first rod portion 501, and a gap is left between its outer wall and the inner wall of the bag 1 to ensure smooth movement. This alternating arrangement of the first rod portion 501 and the second rod portion 502 can better adapt to the deformation of the bag 1 during the deformation process of the bag 1, and can more effectively control the direction and intensity of the airflow during the spray cleaning. The annular second support frame 7 cooperates with the first support frame 4 to better provide support for the bottom of the bag 1, keep the bag 1 in a tensioned state, ensure that the pressure at the bottom of the bag 1 is evenly distributed, avoid the decrease in filtration efficiency due to the relaxation of the bag 1, and help improve the filtration performance and service life of the entire bag 1.

[0060] Furthermore, it also includes: there are multiple connecting members 8, which are arranged circumferentially on one side of the adsorption tube 2, one end of the connecting member 8 is hingedly set on the first support frame 4, and the other end is hingedly set on the adsorption tube 2, and has a telescopic section.

[0061] In this embodiment, the main function of the connector 8 is to provide a positioning effect for the lower part of the adsorption tube 2, because the cloth bag 1 is usually long, and the adsorption tube 2 is also long. When the long adsorption tube 2 is extended into the bottom, it is easy to shake, so a connector 8 is added to improve stability. And the connector 8 is hinged and can move with the adsorption tube 2, ensuring the stability of the adsorption tube 2 during movement, avoiding inaccurate positioning or damage to the cloth bag 1 due to shaking.

[0062] Further, the first support frame 4 has an inner cavity 9, the connecting member 8 includes a first connecting block 10 and a second connecting block 11, the first connecting block 10 has an air cavity 1001, the air cavity 1001 has a second blowing port 1002, the air cavity 1001 is connected to the inner cavity 9 of the first support frame 4, and the second blowing port 1002 is used to blow the sucked part 3. The second connecting block 11 is slidably arranged on the first connecting block 10, and one end of the first connecting block 10 is rotatably arranged on the first support frame 4. The connecting member 8 and the rod frame 5 are arranged at intervals along the circumference, so that the first blowing port 504 and the second blowing port 1002 are arranged at intervals along the circumference.

[0063] In this embodiment, the staggered arrangement of the first blowing port 504 and the second blowing port 1002 can more evenly cover the sucked part 3, improving the cleaning effect, especially for stubborn dust that is difficult to clean. The connector 8 not only provides an airflow channel, but also enhances the stability of the adsorption tube 2 through its structural design to prevent it from shaking during movement. The air cavity 1001 of the connector 8 is connected to the inner cavity 9 of the first support frame 4, ensuring smooth delivery of the airflow and improving the intensity and uniformity of the blowing airflow. The design of the second blowing port 1002 enables the airflow to act directly on the sucked part 3, improving the blowing effect and avoiding airflow dispersion.

[0064] Furthermore, the first connecting block 10 has a slot 1003, the second connecting block 11 is slidably arranged in the slot 1003, one end of the second elastic member 12 is arranged on the inner wall of the slot 1003, and the other end is arranged on the second connecting block 11, for providing force for the second connecting block 11 to slide into the slot 1003.

[0065] In this embodiment, the force provided by the second elastic member 12 causes the second connecting block 11 to always have a tendency to slide toward the inside of the slot 1003 , thereby reducing the shaking of the adsorption tube 2 during movement and ensuring that the adsorption tube 2 can be stably positioned at the bottom center of the cloth bag 1 .

[0066] Furthermore, the air cylinder 13 is arranged on the adsorption tube 2, and an air chamber 14 is formed between the air cylinder 13 and the adsorption tube 2. The air chamber 14 has a plurality of third blowing ports 1401, and the plurality of third blowing ports 1401 are arranged at intervals along the height direction. The air cylinder 13 is located above the first support frame 4 or the second support frame 7.

[0067] In this embodiment, the air cylinder 13 is fixed on the adsorption tube 2 to form a closed air chamber 14 between the air cylinder 13 and the adsorption tube 2. When the rest of the bag 1 needs to be cleaned, compressed gas is filled into the air chamber 14, and the gas is ejected from the third blowing port 1401 and blown toward the surrounding side of the bag 1. As the adsorption tube 2 rises or falls, the air cylinder 13 and the third blowing port 1401 thereon will also move accordingly, thereby expanding the cleaning area and ensuring that the surrounding side of the entire bag 1 can be effectively cleaned.

[0068] Furthermore, the first support frame 4 has an arc-shaped transition portion 401 , and the arc-shaped transition portion 401 abuts against the bottom of the cloth bag 1 .

[0069] In this embodiment, the design of the arc-shaped transition portion 401 enables the first support frame 4 to better fit the bottom of the cloth bag 1, provide uniform support, reduce local stress concentration, and improve overall stability. The smooth arc-shaped transition portion 401 reduces the friction between the bottom of the cloth bag 1 and the first support frame 4, reduces the wear of the cloth bag 1 material, and extends the service life of the cloth bag 1.

[0070] Furthermore, the figure shows a first gas tank 15 and a second gas tank 16. The interior of the first gas tank 15 is divided into two chambers, which are used for suction and blowing respectively. The pipeline of the suction chamber 1001 is plugged and connected with the pipeline of the adsorption tube 2 and can move relatively. The pipeline of the blowing chamber 1001 is plugged and connected with the pipeline of the gas cylinder 13 and can move relatively. The second gas tank 16 is connected with the gas supply disk 17, and the gas supply disk 17 transmits the airflow to the inner cavity 9 of each rod frame 5. In addition, the pipeline can also be flexible and have a deformation length that meets the lifting height of the adsorption tube 2. Other gas connection methods that can adapt to the lifting height of the adsorption tube 2 are all acceptable.

[0071] Furthermore, Fig.11 In the figure, the positional relationship of the inner cavity 9 in the second support frame 7 can represent the positional relationship of the inner cavity 9 in the first support frame 4.

[0072] Example 2

[0073] Reference Figure 3~Figure 6 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that one end of the connecting member 8 is hingedly arranged on the second support frame 7. The air cavity 1001 is connected with the inner cavity 9 of the second support frame 7, and the second blowing port 1002 is used to blow the bottom side of the cloth bag 1 or the sucked part 3.

[0074] When the connecting member 8 is arranged on the first support frame 4, the bottom of the first support frame 4 abuts against the cloth bag 1, thereby limiting the movement range of the adsorption tube 2. In this embodiment, since the second support frame 7 is located above the first support frame 4, the adsorption tube 2 can move up and down based on the second support frame 7, thereby being able to drive the height of the protrusion of the sucked part 3 to be higher, and being more adaptable, making the cleaning operation more flexible and able to meet the cleaning needs at different heights.

[0075] When one end of the adsorption tube 2 extends to the bottom of the bag 1 and does not adsorb the middle of the bag 1, the second blowing port 1002 faces the bottom side of the bag 1. When the adsorption tube 2 adsorbs the middle of the bag 1 and drives the middle of the bag 1 upward, as the connecting piece 8 swings, the second blowing port 1002 gradually faces the sucked part 3. When the adsorption tube 2 is in different positions, the direction of the second blowing port 1002 will be dynamically adjusted, gradually turning from the bottom side of the bag 1 to the sucked part 3, achieving multi-angle and all-round dust cleaning. The dynamic adjustment of the second blowing port 1002 allows the airflow to be evenly distributed in different areas of the bag 1, avoiding local over-concentration or under-concentration, and improving the overall dust cleaning effect.

[0076] It should be noted that in this solution, the first blowing port 504, the second blowing port 1102, and the third blowing port 1401 all need to be installed with gas valves to better control the airflow. The valve model can be selected according to actual conditions, so it is not shown in the accompanying drawings.

[0077] It should be noted that the first rod portion 501 is movably arranged in the second rod portion 502, and the second rod portion 502 can be a split structure. During installation, the end of the first rod portion 501 with a larger diameter can be first inserted into the second rod portion 502, and then the other part of the second rod portion 502 can be put on.

[0078] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A dust cleaning device for a bag filter, used for cleaning a bag (1), characterized in that: include: An adsorption tube (2), the adsorption tube (2) is movably arranged, located inside the cloth bag (1), and has an adsorption end (201). After the adsorption tube (2) moves, the adsorption end (201) moves close to or away from the bottom of the cloth bag (1) and is used to adsorb the middle part of the bottom of the cloth bag (1). The convex part of the cloth bag (1) that is adsorbed is the adsorbed part (3); A first support frame (4), the first support frame (4) is annular and is located at the bottom of the cloth bag (1), and the outer diameter of the first support frame (4) is the same as the inner diameter of the cloth bag (1); A rod frame (5), wherein the rod frame (5) has a plurality of rod frames, one end of the rod frame (5) is arranged on the first support frame (4), and the other end is arranged vertically along the inner wall of the cloth bag (1), and the plurality of rod frames (5) are arranged circumferentially inside the cloth bag (1); the rod frame (5) is a telescopic structure, and has a first rod portion (501) and a second rod portion (502), and the second rod portion (502) is movably arranged inside the first rod portion (501); A first elastic member (6), one end of the first elastic member (6) is arranged in the first rod portion (501), and the other end is arranged on the second rod portion (502), and is used to provide a force for the second rod portion (502) to move out of the first rod portion (501).

2. A dust cleaning device for a bag filter according to claim 1, characterized in that: The rod frame (5) comprises at least one first rod portion (501) and a second rod portion (502), the first rod portion (501) and the second rod portion (502) both having a rod cavity (503), and the rod cavities (503) of the first rod portion (501) and the second rod portion (502) are connected to each other; One of the first rod parts (501) is arranged on the first support frame (4), and its rod cavity (503) has a first blowing port (504), and the first blowing port (504) is inclined toward the sucked part (3).

3. A dust cleaning device for a bag filter according to claim 2, characterized in that: The outer wall of the first rod portion (501) abuts against the inner wall of the cloth bag (1), and a gap exists between the outer wall of the second rod portion (502) and the inner wall of the cloth bag (1), and further comprises: A second support frame (7), the second support frame (7) is arranged on the rod frame (5) and is located above the first support frame (4), the second support frame (7) is annular, and the outer diameter of the second support frame (7) is the same as the inner diameter of the cloth bag (1).

4. A dust cleaning device for a bag filter according to claim 3, characterized in that: Also includes: A connecting piece (8), wherein the connecting piece (8) has a plurality of connecting pieces (8), has a telescopic section, and is arranged circumferentially on one side of the adsorption tube (2), one end of all the connecting pieces (8) is hingedly arranged on the first support frame (4), and the other end is hingedly arranged on the adsorption tube (2), or one end of all the connecting pieces (8) is hingedly arranged on the second support frame (7), and the other end is hingedly arranged on the adsorption tube (2).

5. A dust cleaning device for a bag filter according to claim 4, characterized in that: The connecting member (8) has an air cavity (1001), and the air cavity (1001) has a second blowing port (1002); When one end of all the connecting members (8) is hingedly arranged on the first support frame (4), the first support frame (4) has an inner cavity (9), the air cavity (1001) is connected to the inner cavity (9) of the first support frame (4), and the second blowing port (1002) is used for blowing the sucked portion (3); When one end of all the connecting members (8) is hingedly arranged on the second support frame (7), the second support frame (7) has an inner cavity (9), the air cavity (1001) is connected to the inner cavity (9) of the second support frame (7), and the second blowing port (1002) is used to blow the bottom side of the cloth bag (1) or the sucked part (3).

6. A dust cleaning device for a bag filter according to claim 5, characterized in that: The connecting member (8) comprises a first connecting block (10) and a second connecting block (11), the first connecting block (10) having the air cavity (1001) and the second blowing port (1002), the second connecting block (11) being slidably arranged on the first connecting block (10), one end of all the first connecting blocks (10) being rotatably arranged on the first supporting frame (4), or one end of all the first connecting blocks (10) being rotatably arranged on the second supporting frame (7).

7. A dust cleaning device for a bag filter according to claim 6, characterized in that: The connecting member (8) and the rod frame (5) are arranged at intervals along the circumference, so that the first blowing port (504) and the second blowing port (1002) are arranged at intervals along the circumference.

8. The dust cleaning device for bag filter according to claim 6, characterized in that: The first connection block (10) has a notch (1003), the second connection block (11) is slidably arranged in the notch (1003), and further comprises: A second elastic member (12), one end of the second elastic member (12) is arranged on the inner wall of the slot (1003), and the other end is arranged on the second connecting block (11), and is used to provide a force for the second connecting block (11) to slide into the slot (1003).

9. The dust cleaning device for bag filter according to claim 3, characterized in that: Also includes: An air cylinder (13), wherein the air cylinder (13) is arranged on the adsorption tube (2), and an air chamber (14) is formed between the air cylinder (13) and the adsorption tube (2), wherein the air chamber (14) has a plurality of third blowing ports (1401), and the plurality of third blowing ports (1401) are arranged at intervals along the height direction, and the air cylinder (13) is located above the first support frame (4) or the second support frame (7).

10. The dust cleaning device for bag filter according to claim 1, characterized in that: The first support frame (4) has an arc-shaped transition portion (401), and the arc-shaped transition portion (401) abuts against the bottom of the cloth bag (1).

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