A self-cleaning mechanism for bag filter

Abstract

The present invention relates to the technical field of bag dust collectors, and proposes a self-cleaning mechanism of a bag dust collector, including a shell, the shell having a first air inlet and a first air outlet; a mounting platform is arranged in the shell, and the interior of the shell is divided into a first cavity and a second cavity; a number of support cages are arranged on the mounting platform; a pleated bag is sleeved on the support cage, and the gas to be treated in the first cavity passes through the pleated bag and enters the second cavity; a back-blowing nozzle is arranged in the second cavity; there are two slides, the two slides are arranged in the support cage at intervals, and slide vertically relative to the support cage, a high-pressure space is formed between the two slides, and the back-blowing nozzle is connected to the high-pressure space. Through the above technical scheme, the problem that the bag dust collector using pleated bags for dust removal in the prior art simply uses back-blowing means to clean the bags, and the folds of the bags are not completely cleaned is solved.

Description

Technical Field

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

[0002] In industrial production and many fields that require air quality, bag filters are widely used dust removal equipment. With increasingly stringent environmental standards and increasing requirements for dust removal efficiency, pleated bags are gradually being used more and more because they can significantly increase the filtration area compared to traditional flat bags, capture more fine dust particles under the same equipment volume, thereby improving dust removal efficiency.

[0003] However, there is a prominent problem in the existing bag filter technology that uses pleated bags for dust removal. Most traditional cleaning methods rely solely on back-blowing to clean the bags. Due to the complex pleated structure of the pleated bags, it is difficult for the gas to penetrate evenly into each pleat during the back-blowing process, resulting in incomplete cleaning of the pleats of the bags. This will not only cause the residual dust to gradually accumulate in the pleats, increase the running resistance of the bags, and reduce the dust removal efficiency, but also, over time, the air permeability of the bags will deteriorate due to excessive dust accumulation, shortening the service life of the bags. Summary of the invention

[0004] The present invention provides a self-cleaning mechanism for a bag dust collector, which solves the problem in the related art that the bag dust collector using pleated bags for dust removal only uses back-blowing means to clean the bags, resulting in incomplete cleaning of the pleats of the bags.

[0005] The technical solution of the present invention is as follows:

[0006] A self-cleaning mechanism for a bag filter, comprising:

[0007] A housing having a first air inlet and a first air outlet;

[0008] an installation platform, wherein the installation platform is arranged in the shell, and divides the interior of the shell into a first cavity and a second cavity, wherein the first air inlet is connected to the first cavity, and the first air outlet is connected to the second cavity;

[0009] A support cage, wherein the number of the support cages is several, the support cages are arranged on the mounting platform, one end of the support cage is located in the second cavity, and the other end of the support cage is located in the first cavity;

[0010] A pleated cloth bag, wherein the pleated cloth bag is sleeved on the supporting cage, and the gas to be treated in the first cavity passes through the pleated cloth bag and enters the second cavity;

[0011] A back-blowing nozzle, the back-blowing nozzle is disposed in the second cavity;

[0012] The two slide plates are arranged in the support cage at an interval and slide vertically relative to the support cage, a high-pressure space is formed between the two slide plates, the back-blowing nozzle is connected to the high-pressure space, and after the two slide plates slide synchronously, the relative position of the high-pressure space corresponding to the pleated bag is changed, so as to perform high-pressure cleaning of different positions of the pleated bag.

[0013] Optionally, the side wall of the skateboard has a plurality of magnetic attraction parts, and further includes:

[0014] A sliding platform, wherein the sliding platforms are provided in two pieces, and the two sliding platforms are vertically spaced and slidably arranged in the first cavity, and the sliding platform has a plurality of through slots, and the support cage and the pleated cloth bag pass through the through slots;

[0015] Magnets, the number of which is several, and the several magnets are arranged on the inner wall of the through slot, the magnets are magnetically connected to the magnetic attraction part, and after the sliding platform slides, the slide plate is driven to slide vertically in the support cage.

[0016] Optionally, a plurality of the magnetic attraction portions and the magnets are evenly distributed along the circumference of the axis of the skateboard.

[0017] Optionally, it also includes:

[0018] A guide rod is arranged in the support cage, and the slide plate is vertically slidably arranged on the guide rod.

[0019] Optionally, it also includes:

[0020] A hollow guide column, wherein the hollow guide column is arranged in the support cage, the slide plate is vertically slidably arranged on the hollow guide column, the hollow guide column has a cavity inside, the side wall of the hollow guide column has a ventilation groove, the cavity is connected to the ventilation groove, one end of the cavity is connected to the backflush nozzle, and the ventilation groove is connected to the high-pressure space;

[0021] A sleeve, the sleeve is slidably arranged on the hollow guide column and is located in the high-pressure space. The slide plate abuts against the sleeve after sliding, pushing the sleeve to slide vertically. The inner side of the sleeve has a protrusion, and the protrusion is slidably arranged in the ventilation groove;

[0022] A sphere, wherein the sphere is arranged on the protrusion, and after the sleeve slides vertically, the sphere is driven to slide synchronously in the hollow guide column, and the sphere is used to block the cavity below the high-pressure space;

[0023] A sealing plastic film is sleeved on the hollow guide column, and its two ends are respectively connected to one end of the support cage and the slide plate, so as to seal the ventilation groove between the second cavity and the high-pressure space.

[0024] Optionally, there are a plurality of guide rods, and the plurality of guide rods are arranged at intervals along the circumference of the axis of the hollow guide column.

[0025] Optionally, the ventilation groove is spiral, and after the protrusion slides in the ventilation groove, the sleeve rotates on the hollow guide column, and further comprises:

[0026] A knocking rod, one end of which is swingably arranged on the sleeve, and after the sleeve rotates, the other end of the knocking rod knocks on a plurality of the guide rods in sequence;

[0027] A torsion spring is arranged on the sleeve, and two ends of the torsion spring act on the sleeve and the knocking rod respectively.

[0028] Optionally, the shell has an ash discharge port, the ash discharge port is located at the bottom of the first cavity, the inner wall of the first cavity also has a material guide surface, the material guide surface is used to gather the filtered matter dropped from the pleated bag to the ash discharge port, and further includes:

[0029] An ash discharge valve, one end of which is disposed on the ash discharge port and communicated with the first cavity;

[0030] A material bucket is arranged at the other end of the ash discharge valve and is used to collect the filtered material.

[0031] Optionally, it also includes:

[0032] A pendulum, one end of which is swingably arranged outside the shell and located at one side of the ash discharge port, and the pendulum strikes the shell after swinging.

[0033] Optionally, it also includes:

[0034] A first air inlet pipe is connected to the first air inlet port and leads to the sliding platform. After the gas to be treated passes through the first air inlet pipe, it impacts the sliding platform.

[0035] The working principle and beneficial effects of the present invention are:

[0036] In the present invention, the pleated bag greatly increases the filtering area compared with the traditional flat bag due to its pleated structure, and can capture more fine dust particles under the same equipment volume, significantly improving the dust removal efficiency. The back-blowing nozzle and the high-pressure space formed by the slide plate work together. During the cleaning process, as the slide plate slides, the high-pressure space moves up and down in the support cage, so that the high-pressure gas can fully cover the pleats and other parts of the pleated bag, effectively solving the problem of incomplete cleaning of the pleats of the bag under the traditional simple back-blowing method, achieving deep and thorough cleaning of the pleated bag, greatly extending the service life of the bag, significantly reducing the frequency and cost of manual intervention in cleaning, and effectively ensuring the continuous, stable and efficient working performance of the dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] 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.

[0038] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0039] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0040] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0041] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0042] Figure 5 This is a schematic diagram of the support cage structure of the present invention;

[0043] Figure 6 For the present invention Figure 5 Enlarged view of point C in the middle;

[0044] Figure 7 This is a schematic diagram of the internal structure of the support cage of the present invention;

[0045] Figure 8 For the present invention Figure 7 Enlarged view of point D in the middle;

[0046] Fig. 9 This is a schematic diagram of the external structure of the present invention from another angle;

[0047] Fig.10 For the present invention Fig. 9 Enlarged view of point E in the middle.

[0048] In the figure: 1. shell, 101. first air inlet, 102. first air outlet, 2. mounting platform, 103. first cavity, 104. second cavity, 3. support cage, 4. pleated cloth bag, 5. back-blowing nozzle, 6. slide plate, 601. magnetic suction part, 7. sliding platform, 701. through groove, 8. magnet, 9. guide rod, 10. hollow guide column, 1001. cavity, 1002. ventilation groove, 11. sleeve, 1101. protrusion, 12. sphere, 13. sealing plastic film, 14. knocking rod, 105. ash discharge port, 106. material guide surface, 15. ash discharge valve, 16. material barrel, 17. pendulum, 18. first air inlet pipe. DETAILED DESCRIPTION

[0049] 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.

[0050] 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".

[0051] 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.

[0052] 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.

[0053] Reference Figure 1 to Figure 10, which is the first embodiment of the present invention, proposes a self-cleaning mechanism of a bag dust collector, including a shell 1, the shell 1 has a first air inlet 101 and a first air outlet 102; a mounting platform 2 is arranged in the shell 1, and the interior of the shell 1 is divided into a first cavity 103 and a second cavity 104, the first air inlet 101 is connected to the first cavity 103, and the first air outlet 102 is connected to the second cavity 104; a plurality of support cages 3 are arranged on the mounting platform 2, one end of the support cage 3 is located in the second cavity 104, and the other end is located in the first Cavity 103; the pleated cloth bag 4 is sleeved on the support cage 3, and the gas to be treated in the first cavity 103 passes through the pleated cloth bag 4 into the second cavity 104; the back-blowing nozzle 5 is arranged in the second cavity 104; there are two slide plates 6, and the two slide plates 6 are arranged at intervals in the support cage 3 and slide vertically relative to the support cage 3, and a high-pressure space is formed between the two slide plates 6, and the back-blowing nozzle 5 is connected to the high-pressure space. After the two slide plates 6 slide synchronously, the relative position of the high-pressure space corresponding to the pleated cloth bag 4 is changed, which is used for high-pressure cleaning of different positions of the pleated cloth bag 4.

[0054] In this embodiment, in order to solve the problem that the bag dust collector using pleated bags for dust removal in the related art simply uses backblowing to clean the bags, and the folds of the bags are not completely cleaned, a self-cleaning mechanism of the bag dust collector is designed. First, a shell 1 is constructed, a first air inlet 101 is opened on one side of the shell 1, and a first air outlet 102 is set at a corresponding position on the other side. A horizontally placed mounting platform 2 is installed inside the shell 1. A plurality of support cages 3 are made, and these support cages 3 are vertically and firmly mounted on the mounting platform 2, so that one end of them extends out of the second cavity 104, and most of them are located in the first cavity 103. The pleated bag 4 is put on the support cage 3 to ensure that the dust-containing gas in the first cavity 103 can only enter the second cavity 104 through the fine filter layer of the pleated bag 4. A backblowing nozzle 5 is installed in the second cavity 104, and the backblowing nozzle 5 is connected to an external high-pressure gas source, and an electromagnetic valve is provided on the connecting pipe to accurately control the on and off of the gas source. Finally, two slide plates 6 are installed in the support cage 3, and a certain interval is reserved between the two slide plates 6, so as to form a relatively closed high-pressure space, and the back-blowing nozzle 5 is connected to the high-pressure space. When the pleated bag 4 needs to be cleaned, the two slide plates 6 are slid up and down in the support cage 3. During the sliding process, the high-pressure space also moves up and down in the support cage 3, and each part of the pleated bag 4 is gradually cleaned by back-blowing.

[0055] The advantage is that the pleated bag 4, with its unique pleated structure, greatly increases the filtering area compared to the traditional flat bag, and can capture more fine dust particles under the same equipment volume, significantly improving the dust removal efficiency. The high-pressure space formed by the back-blowing nozzle 5 and the slide 6 works in coordination. During the cleaning process, as the slide 6 slides, the high-pressure space moves up and down in the support cage 3, so that the high-pressure gas can fully cover the folds and other parts of the pleated bag 4, effectively solving the problem of incomplete cleaning of the bag folds under the traditional simple back-blowing method, achieving deep and thorough cleaning of the pleated bag 4, greatly extending the service life of the bag, significantly reducing the frequency and cost of manual intervention in cleaning, and effectively ensuring the continuous, stable and efficient working performance of the dust collector.

[0056] Furthermore, the side wall of the slide plate 6 has a plurality of magnetic attraction parts 601, and also includes a sliding platform 7. There are two sliding platforms 7, and the two sliding platforms 7 are vertically spaced and slidingly arranged in the first cavity 103. The sliding platform 7 has a plurality of through grooves 701, and the support cage 3 and the pleated cloth bag 4 pass through the through grooves 701; there are a plurality of magnets 8, and a plurality of magnets 8 are arranged on the inner walls of the through grooves 701. The magnets 8 are magnetically connected to the magnetic attraction parts 601. After the sliding platform 7 slides, it drives the slide plate 6 to slide vertically in the support cage 3.

[0057] In this embodiment, a number of magnetic attraction parts 601 are evenly inlaid on the side wall of the slide plate 6, and the magnetic attraction parts 601 are made of high magnetic materials to ensure that there is a sufficiently strong magnetic force. A plurality of vertical screw rods are installed on both sides of the first cavity 103, and two sliding platforms 7 are respectively installed on these screw rods so that they can slide vertically smoothly. According to the distribution of the support cage 3 and the pleated bag 4, through grooves 701 are opened at a certain interval on the sliding platform 7, and the size of the through groove 701 is just enough to allow the support cage 3 and the pleated bag 4 to pass through without hindrance. The magnet 8 is firmly fixed on the inner wall of the through groove 701, and the polarity of the magnet 8 matches the magnetic attraction part 601, so that a stable and reliable magnetic connection can be generated. When the external electric drive device (such as a linear motor) drives the sliding platform 7 to slide vertically along the screw rod, due to the magnetic attraction between the magnet 8 and the magnetic attraction part 601, the slide plate 6 will slide vertically synchronously in the support cage 3, and the movement speed and displacement of the two remain highly consistent.

[0058] The advantage is that the innovative design of the magnetic attraction part 601 and the magnet 8 cleverly constructs a non-contact magnetic transmission connection between the slide plate 6 and the sliding platform 7. This connection method greatly reduces the direct friction, wear and jamming between mechanical parts, and significantly reduces the probability of failure during equipment operation. The synchronous movement of the slide plate 6 is driven by the precise vertical sliding of the sliding platform 7, and the position of the slide plate 6 in the support cage 3 can be accurately controlled, thereby flexibly adjusting the size, shape and internal pressure distribution of the high-pressure space. In this way, when the back-blowing nozzle 5 is working, the ejected high-pressure gas can act on different areas of the pleated bag 4 more accurately and efficiently according to actual needs, especially those deep pleats and corners that are difficult to clean thoroughly by traditional methods, to achieve an all-round, multi-level deep cleaning effect.

[0059] Furthermore, the plurality of magnetic attraction portions 601 and the magnets 8 are evenly distributed along the circumference of the axis of the slide plate 6 .

[0060] In this embodiment, a plurality of magnetic attraction portions 601 are evenly distributed along the axis of the slide plate 6. Accordingly, the magnets 8 on the inner wall of the through slot 701 are also accurately installed in the same evenly distributed manner, and their number strictly corresponds to the magnetic attraction portions 601 and their positions match each other.

[0061] The advantage is that the magnetic attraction part 601 and the magnet 8 are evenly distributed along the circumference of the axis of the slide plate 6, so that the slide plate 6 is subjected to extremely uniform force under the magnetic drive of the sliding platform 7. This uniform force effectively prevents the slide plate 6 from being stuck, tilted, swayed, and other unstable conditions caused by uneven force, and ensures that the slide plate 6 always slides vertically stably and smoothly in the support cage 3.

[0062] Furthermore, it also includes a guide rod 9, which is arranged in the support cage 3, and the slide plate 6 is vertically slidably arranged on the guide rod 9.

[0063] In this embodiment, a plurality of guide rods 9 are installed inside the support cage 3 along its axial direction. These guide rods 9 are made of high-strength, low-friction alloy steel, and the surface is finely polished and treated with a special wear-resistant coating to further reduce sliding friction. The corresponding positions on the slide plate 6 are accurately processed to form matching circular holes, so that the slide plate 6 can be tightly and smoothly slidably sleeved on the guide rods 9 vertically.

[0064] The advantage is that the setting of the guide rod 9 provides an extremely accurate and reliable guiding effect for the vertical sliding of the slide plate 6. When the slide plate 6 moves with the magnetic force of the sliding platform 7, the guide rod 9 can strictly limit the freedom of the slide plate 6 so that it can only slide stably along the predetermined vertical direction, completely avoiding the instability of the slide plate 6 such as lateral deviation, rotation and irregular shaking during the sliding process.

[0065] Furthermore, it also includes a hollow guide column 10, the hollow guide column 10 is arranged in the support cage 3, the slide plate 6 is vertically slidably arranged on the hollow guide column 10, the hollow guide column 10 has a cavity 1001 inside, the side wall of the hollow guide column 10 has a ventilation groove 1002, the cavity 1001 is connected to the ventilation groove 1002, one end of the cavity 1001 is connected to the back-blowing nozzle 5, and the ventilation groove 1002 is connected to the high-pressure space; the sleeve 11 is slidably arranged on the hollow guide column 10, located in the high-pressure space, and the slide plate 6 abuts against the sleeve 11 after sliding, pushing The sleeve 11 slides vertically, and a protrusion 1101 is provided on the inner side of the sleeve 11, and the protrusion 1101 is slidably arranged in the ventilation groove 1002; the sphere 12 is arranged on the protrusion 1101, and after the sleeve 11 slides vertically, it drives the sphere 12 to slide synchronously in the hollow guide column 10, and the sphere 12 is used to block the cavity 1001 below the high-pressure space; the sealing plastic film 13 is sleeved on the hollow guide column 10, and its two ends are respectively connected to one end of the support cage 3 and the slide plate 6, so as to close the ventilation groove 1002 between the second cavity 104 and the high-pressure space.

[0066] In this embodiment, a hollow guide column 10 is installed in the support cage 3, and a smooth and regular cavity 1001 is created inside the hollow guide column 10. A ventilation groove 1002 is designed on the side wall of the hollow guide column 10, so that the cavity 1001 is connected to the ventilation groove 1002. The back-blowing nozzle 5 is connected to one end of the cavity 1001 of the hollow guide column 10. A sleeve 11 that can slide vertically is installed on the hollow guide column 10. A protrusion 1101 is set on the inner side wall of the sleeve 11. The shape and size of the protrusion 1101 perfectly match the ventilation groove 1002, and it can slide tightly and flexibly in the ventilation groove 1002. A sphere 12 is installed on the protrusion 1101, and the sphere 12 has good elasticity and sealing performance. A sealing plastic film 13 is sleeved on the hollow guide column 10. The sealing plastic film 13 is made of a material that is resistant to high temperature, wear and excellent in flexibility. Its two ends are tightly connected to one end of the support cage 3 and the slide plate 6, respectively. A special sealing process is used to ensure that the venting groove 1002 between the second cavity 104 and the high-pressure space is in a completely closed state. When the slide plate 6 slides vertically on the guide rod 9, the slide plate 6 will abut against the sleeve 11 and push the sleeve 11 to slide vertically.

[0067] The advantage is that the ball 12 can timely and effectively block the cavity 1001 below the high-pressure space when the sleeve 11 slides vertically, preventing leakage of high-pressure gas, ensuring that the pressure in the high-pressure space is stable and sufficient, and further enhancing the dust cleaning effect. The sealing plastic film 13 effectively blocks the ventilation groove 1002 between the second cavity 104 and the high-pressure space, completely avoiding leakage of high-pressure gas.

[0068] Furthermore, there are a plurality of guide rods 9 , and the plurality of guide rods 9 are arranged at intervals along the circumference of the axis of the hollow guide column 10 .

[0069] In this embodiment, a plurality of guide rods 9 are arranged around the hollow guide column 10 at intervals along the circumference of the axis thereof, so as to ensure that the slide plate 6 can be provided with vertical sliding guidance.

[0070] Furthermore, the ventilation groove 1002 is spiral-shaped. After the protrusion 1101 slides in the ventilation groove 1002, the sleeve 11 rotates on the hollow guide column 10. It also includes a knocking rod 14, one end of which is swingably set on the sleeve 11. After the sleeve 11 rotates, the other end of the knocking rod 14 knocks on several guide rods 9 in sequence; a torsion spring is set on the sleeve 11, and the two ends of the torsion spring act on the sleeve 11 and the knocking rod 14 respectively.

[0071] In this embodiment, a knocking rod 14 is installed on the sleeve 11. One end of the knocking rod 14 can swing within a specific angle range. A torsion spring is installed at the connection between the sleeve 11 and the knocking rod 14. The torsion spring is made of high-quality spring steel and has good elasticity and fatigue life. The two ends of the torsion spring are respectively fixed on the sleeve 11 and the knocking rod 14, so that the knocking rod 14 maintains a stable and appropriate angle with the sleeve 11 in a natural state. When the sleeve 11 rotates on the hollow guide column 10, since the ventilation groove 1002 is spiral, the protrusion 1101 slides in the ventilation groove 1002 to drive the sleeve 11 to rotate stably. At this time, under the action of the torsion spring, the other end of the knocking rod 14 will knock on several guide rods 9 in sequence.

[0072] The advantage is that the combination design of the knocking rod 14 and the torsion spring produces an effective knocking vibration effect during the rotation of the sleeve 11. This vibration can be evenly transmitted to the support cage 3 and the pleated bag 4, making it easier for the dust attached to the surface of the pleated bag 4 to fall off under the dual synergistic effect of high-pressure gas backblowing and vibration. Compared with the traditional method that only relies on high-pressure gas backblowing, the addition of vibration can significantly reduce the adhesion between dust particles and bag fibers, greatly improving the thoroughness and efficiency of dust cleaning.

[0073] Furthermore, the shell 1 has an ash discharge port 105, which is located at the bottom of the first cavity 103. The inner wall of the first cavity 103 also has a material guide surface 106, which is used to gather the filtered matter dropped from the pleated cloth bag 4 to the ash discharge port 105. It also includes an ash discharge valve 15, one end of which is arranged on the ash discharge port 105 and connected to the first cavity 103; a material bucket 16 is arranged at the other end of the ash discharge valve 15 for collecting the filtered matter.

[0074] In this embodiment, an ash discharge port 105 is provided at a suitable position at the bottom of the shell 1. The size of the ash discharge port 105 is designed and calculated based on the expected dust emission and emission speed to ensure that the dust can be discharged smoothly without causing blockage. A number of inclined guide surfaces 106 are designed on the inner wall of the first cavity 103 to ensure that the dust can smoothly gather and slide toward the ash discharge port 105 under the action of gravity. An electric ash discharge valve 15 is installed on the ash discharge port 105. One end of the electric ash discharge valve 15 is connected to the first cavity 103 to ensure that the connection part is sealed and leak-free. The other end is connected to a material bucket 16 specifically for collecting dust. The dust filtered out of the pleated bag 4 enters the material bucket 16 through the ash discharge port 105 under the guidance of the material guide surface 106.

[0075] Furthermore, it also includes a pendulum 17, one end of which is swingably arranged outside the shell 1 and located on one side of the ash discharge port 105. After the pendulum 17 swings, it hits the shell 1.

[0076] In this embodiment, a pendulum 17 is installed outside the shell 1, on one side of the ash discharge port 105. The pendulum 17 is made of a solid and heavy metal material, such as cast iron, to ensure that sufficient impact force is generated when struck. One end of the pendulum 17 is connected to the shell 1 through a hinge so that the pendulum 17 can swing, and a ball bearing is installed at the hinge to reduce the friction when the pendulum 17 swings, ensuring the smoothness and durability of the swing. During the operation of the dust collector, when it is necessary to clean the dust that may exist near the ash discharge port 105, the pendulum 17 is driven to swing by an external driving device (such as a cylinder driving a connecting rod mechanism), and the other end of the pendulum 17 strikes the shell 1 with a certain force and frequency.

[0077] The advantage is that the striking action of the pendulum 17 can generate strong vibration waves, which can be effectively transmitted to the dust discharge port 105 and the material guide surface 106. For the dust that may be attached to these parts, the vibration can loosen its internal structure, reduce the adhesion between particles, and thus promote the dust to fall off. Reduce the downtime and maintenance time caused by dust discharge failure, improve production efficiency, reduce equipment maintenance costs, and ensure that the air purification work in the industrial production process can be carried out continuously and stably.

[0078] Furthermore, it also includes a first air inlet pipe 18 , which is connected to the first air inlet port 101 and leads to the sliding platform 7 . After the gas to be treated passes through the first air inlet pipe 18 , it impacts the sliding platform 7 .

[0079] In this embodiment, one end of the first air inlet pipe 18 is closely and firmly connected to the first air inlet port 101, and the other end faces the lower surface of the sliding platform 7. When the gas to be treated enters the first air inlet pipe 18, a gas flow with a certain pressure and flow rate is formed in the pipe, and then rushes toward the sliding platform 7.

[0080] The advantage is that the first air inlet pipe 18 guides the gas to be treated so that it impacts the sliding platform 7 before entering the first cavity 103. This impact can disperse the gas to be treated, break up the originally concentrated airflow, and avoid the gas from continuously passing through the pleated bag 4 in a fixed range, so that the filtering process can be carried out more evenly in the entire first cavity 103. The uniform filtering distribution helps to give full play to the filtering effect of the pleated bag 4, prevent the bag from being blocked or damaged prematurely due to excessive local filtering load, and extend the service life of the pleated bag 4.

[0081] 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 self-cleaning mechanism for a bag filter, characterized in that: include: A housing (1), the housing (1) having a first air inlet (101) and a first air outlet (102); A mounting platform (2), the mounting platform (2) being arranged in the shell (1) and dividing the interior of the shell (1) into a first cavity (103) and a second cavity (104), the first air inlet (101) being connected to the first cavity (103), and the first air outlet (102) being connected to the second cavity (104); A support cage (3), wherein the support cage (3) is provided in a plurality of numbers, the support cage (3) being arranged on the mounting platform (2), one end of the support cage (3) being located in the second cavity (104), and the other end being located in the first cavity (103); a pleated cloth bag (4), the pleated cloth bag (4) being sleeved on the supporting cage (3), the gas to be treated in the first cavity (103) passing through the pleated cloth bag (4) entering the second cavity (104); A back-blowing nozzle (5), the back-blowing nozzle (5) being arranged in the second cavity (104); A slide plate (6), wherein the slide plates (6) are provided with two slide plates (6), the two slide plates (6) are arranged in the support cage (3) at intervals, and slide vertically relative to the support cage (3) synchronously, a high-pressure space is formed between the two slide plates (6), the back-blowing nozzle (5) is connected to the high-pressure space, and after the two slide plates (6) slide synchronously, the relative position of the high-pressure space corresponding to the pleated cloth bag (4) is changed, so as to perform high-pressure cleaning at different positions of the pleated cloth bag (4); A guide rod (9), the guide rod (9) being arranged in the support cage (3), and the slide plate (6) being arranged on the guide rod (9) in a vertically slidable manner; A hollow guide column (10), wherein the hollow guide column (10) is arranged in the support cage (3), the slide plate (6) is vertically slidably arranged on the hollow guide column (10), the hollow guide column (10) has a cavity (1001) inside, the side wall of the hollow guide column (10) has a ventilation groove (1002), the cavity (1001) is connected to the ventilation groove (1002), one end of the cavity (1001) is connected to the backflush nozzle (5), and the ventilation groove (1002) is connected to the high-pressure space; a sleeve (11), the sleeve (11) being slidably disposed on the hollow guide column (10) and being located in the high-pressure space; the slide plate (6) abutting against the sleeve (11) after sliding, thereby pushing the sleeve (11) to slide vertically; the inner side of the sleeve (11) having a protrusion (1101), the protrusion (1101) being slidably disposed in the ventilation groove (1002); a sphere (12), the sphere (12) being arranged on the protrusion (1101); after the sleeve (11) slides vertically, it drives the sphere (12) to slide synchronously in the hollow guide column (10); the sphere (12) is used to seal the cavity (1001) below the high-pressure space; A sealing plastic film (13), the sealing plastic film (13) being sleeved on the hollow guide column (10), with two ends respectively connected to one end of the support cage (3) and the slide plate (6), for sealing the ventilation groove (1002) between the second cavity (104) and the high-pressure space.

2. The self-cleaning mechanism of a bag filter according to claim 1, characterized in that: The side wall of the slide plate (6) has a plurality of magnetic attraction portions (601), and further comprises: A sliding platform (7), wherein the sliding platform (7) has two members, the two sliding platforms (7) being vertically spaced and slidably arranged in the first cavity (103), the sliding platform (7) having a plurality of through slots (701), and the support cage (3) and the pleated cloth bag (4) passing through the through slots (701); The magnets (8) are provided in a plurality of numbers, and the plurality of magnets (8) are arranged on the inner wall of the through slot (701). The magnets (8) are magnetically connected to the magnetic attraction portion (601). After the sliding platform (7) slides, the sliding plate (6) is driven to slide vertically in the support cage (3).

3. The self-cleaning mechanism of a bag filter according to claim 2, characterized in that: The plurality of magnetic attraction portions (601) and the magnets (8) are evenly distributed along the circumference of the axis of the slide plate (6).

4. The self-cleaning mechanism of a bag filter according to claim 1, characterized in that: There are a plurality of guide rods (9), and the plurality of guide rods (9) are arranged at intervals along the circumference of the axis of the hollow guide column (10).

5. The self-cleaning mechanism of a bag filter according to claim 1, characterized in that: The ventilation groove (1002) is spiral-shaped, and after the protrusion (1101) slides in the ventilation groove (1002), the sleeve (11) rotates on the hollow guide column (10), and further comprises: a knocking rod (14), one end of the knocking rod (14) being swingably disposed on the sleeve (11), and after the sleeve (11) rotates, the other end of the knocking rod (14) knocks on a plurality of the guide rods (9) in sequence; A torsion spring, wherein the torsion spring is arranged on the sleeve (11), and two ends of the torsion spring act on the sleeve (11) and the knocking rod (14) respectively.

6. The self-cleaning mechanism of a bag filter according to claim 1, characterized in that: The shell (1) has an ash discharge port (105), the ash discharge port (105) is located at the bottom of the first cavity (103), the inner wall of the first cavity (103) also has a material guide surface (106), the material guide surface (106) is used to gather the filtered matter dropped from the pleated cloth bag (4) toward the ash discharge port (105), and further comprises: an ash discharge valve (15), one end of the ash discharge valve (15) being arranged on the ash discharge port (105) and communicating with the first cavity (103); A material bucket (16), the material bucket (16) being arranged at the other end of the ash discharge valve (15) and being used for collecting the filtered material.

7. The self-cleaning mechanism of a bag filter according to claim 6, characterized in that: Also includes: A pendulum (17), one end of which is swingably arranged outside the shell (1) and located on one side of the ash discharge port (105); after the pendulum (17) swings, it strikes the shell (1).

8. The self-cleaning mechanism of a bag filter according to claim 2, characterized in that: Also includes: A first air inlet pipe (18), the first air inlet pipe (18) being connected to the first air inlet port (101), the first air inlet pipe (18) leading to the sliding platform (7), and the gas to be treated impacting the sliding platform (7) after passing through the first air inlet pipe (18).

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