Bag-type dust removal device for biomass boiler

Abstract

The invention discloses a biomass boiler cloth bag dust removal device which comprises a dust removal bin, a partition plate arranged in the dust removal bin, a plurality of cloth bag barrels arranged on the partition plate in an array mode and an air pump installed outside the dust removal bin, and further comprises a swing part hinged to the inner wall of the dust removal bin, the free end of the swing part is connected with a flow dividing pipe, and a plurality of nozzles are arranged on the flow dividing pipe; the shunt pipe is in airtight connection with the air pump; and the driving assembly is used for driving the swinging piece to rotate. In the normal smoke filtering process of the cloth bag cylinder, the driving assembly drives the swing part to rotate upwards, so that the flow dividing pipe carries the nozzle to move to the avoiding position avoiding the upper portion of the cloth bag cylinder to avoid shielding of ascending airflow, and when the cloth bag cylinder needs to be cleaned, the driving assembly drives the swing part to rotate downwards, so that the cloth bag cylinder is cleaned. The flow dividing pipe carries the nozzle to move to a working position close to and right facing the upper portion of the cloth bag cylinder, at the moment, the nozzle is downwards aligned with the interior of the cloth bag cylinder, and normal cleaning work can be carried out.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas treatment, in particular to a biomass boiler bag dust removal device. BACKGROUND

[0002] The bag dust removal device, also known as a bag-type dust collector, is a dry dust filtering device, which is suitable for capturing fine, dry and non-fibrous dust. The filter bag is made of woven filter cloth or felt, which uses the filtering effect of the fiber fabric to filter the dust-containing gas. When the dust-containing gas enters the bag-type dust collector, the dust with large particles and high specific gravity falls into the ash hopper due to the action of gravity. The gas containing fine dust is filtered through the filter material, and the dust is blocked, so that the gas is purified. The biomass boiler is a boiler that uses biomass energy as fuel. The flue gas generated after the biomass fuel is burned usually contains a large amount of dust particles. Direct emission can easily pollute the atmosphere, and the bag dust removal device can be well applied to this.

[0003] Patent document CN106334382A discloses a negative pressure type low pressure pulse bag dust removal device for treating boiler flue gas, which relates to the technical field of flue gas treatment, and comprises an air inlet duct, an air outlet duct, a clean gas tank, a dust filtering system, a pulse blowing and dust cleaning system, a dust storage and unloading system and a guide plate. The guide plate is located above the air inlet duct. The dust filtering system is composed of a filter bag, a flower plate for installing the filter bag and a bag cage for supporting the filter bag. The clean gas tank is located above the filter bag. The dust storage and unloading system is composed of an ash hopper and an ash unloading valve, and is located below the filter bag. The pulse blowing and dust cleaning system is composed of an electromagnetic pulse valve, a gas pocket, a cylinder lifting valve, a blowing pipe and a blowing port, wherein the blowing port is aligned downward to the filter bag port. The present application is reasonably designed, and a guide plate is added above the air inlet duct to guide the dust-containing gas to flow downward and then turn upward, so that the dust-containing gas is fully contacted with the filter bag under the action of negative pressure, and an ideal filtering effect is achieved. The dust on the filter bag can be easily removed through the pulse blowing and dust cleaning system.

[0004] In the manufacture of the existing product as described above, a jet structure is provided above the dust removal unit of the dust collector, i.e. above the bag cylinder structure, for reverse ventilation of the bag cylinder, so that the particles filtered by the bag cylinder are separated and fall down. However, the above jet structure also blocks above the bag cylinder during normal filtering operation of the bag cylinder, which easily hinders the upward airflow, so that the finer particles remaining in the airflow collide and fall back into the bag cylinder. Therefore, there is an urgent need for a biomass boiler bag dust removal device to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a biomass boiler bag dust removal device to solve the above problems in the prior art.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme:

[0007] The biomass boiler bag dust collector device comprises a dust removal bin, a partition plate arranged in the dust removal bin, a plurality of bag cylinders arranged in an array on the partition plate, and a gas pump mounted on the outside of the dust removal bin.

[0008] Preferably, the gas pump is provided with a gas pipe extending into the dust removal bin, and the swing member is provided with a sleeve pipe rotatably arranged on the gas pipe.

[0009] Preferably, the swing member is provided with a cavity in the inside thereof to communicate the gas pipe with the shunt pipe.

[0010] Preferably, the driving assembly comprises a first rack movably arranged in the dust removal bin, a first gear coaxially sleeved on the sleeve pipe and engaged with the first rack, and a telescopic driving unit mounted on the inner wall of the dust removal bin to drive the first rack to move.

[0011] Preferably, the upper end of the bag cylinder is rotatably provided with a cover, the cover is provided with an air inlet hole matched with the nozzle, the rotation of the cover is linked with the rotation of the sleeve pipe through a linkage assembly, when the shunt pipe is in the working position, the cover is rotated to a horizontal state to shield the upper end of the bag cylinder, and the nozzle downwardly corresponds to the air inlet hole, when the shunt pipe is in the avoidance position, the cover is rotated to a vertical state to completely open the upper end of the bag cylinder.

[0012] Preferably, the linkage assembly comprises a second rack movably arranged on the partition plate, a second gear coaxially connected to one end of the rotating shaft of the cover and engaged with the second rack, and a linkage sleeve threadedly sleeved on the outside of the sleeve pipe and fixedly connected with the second rack through a linkage rod.

[0013] Preferably, the swing member is elastically connected with the sleeve pipe, the inner wall of the dust removal bin is provided with a limiting member to limit the rotation of the swing member, after the swing member drives the shunt pipe to switch to the working position, the swing member is limited by the limiting member, and the sleeve pipe continues to rotate to link the cover to rotate to the horizontal state and the nozzle to insert into the air inlet hole.

[0014] Preferably, the swing member is provided with a neck ring sleeved on the gas pipe, the sleeve pipe is provided with a sealing ring coaxially sleeved on the outside of the neck ring, and the inner wall of the sealing ring is connected with the neck ring through a coil spring.

[0015] Preferably, a sealing assembly is arranged between the neck ring and the sealing ring, and the sealing assembly is triggered by the relative rotation of the neck ring and the sealing ring to enhance the sealing between the swing member and the gas pipe.

[0016] Preferably, the sealing assembly comprises a convex ring arranged at the end of the trachea, a transition ring rotatably connected to the inner side of the sealing ring, and a coil spring connected between the sealing ring and the transition ring, and the transition ring is screw-coupled to the neck ring.

[0017] In the above technical solution, the present application has the following advantages:

[0018] The biomass boiler bag dust removal device drives the swing piece to rotate upward through the driving assembly, so that the shunt pipe carrying the nozzle moves to the avoidance position above the bag cylinder, avoiding shielding the upward airflow, while when the bag cylinder needs to be cleaned, the driving assembly drives the swing piece to rotate downward, so that the shunt pipe carrying the nozzle moves to the working position close to and opposite to the bag cylinder, at this time the nozzle is downwardly aligned with the inside of the bag cylinder, and the cleaning work can be normally carried out.

[0019] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not intended to limit the disclosure.

[0020] This application file provides an overview of various implementations or examples of the technology described in this disclosure and is not intended to be a comprehensive or exhaustive disclosure of the technology disclosed. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall internal visualization structure of the present application;

[0023] Figure 2 It is a schematic diagram of the overall internal visualization structure of the present application; Figure 1 It is a schematic diagram of the enlarged structure at A in the present application;

[0024] Figure 3 It is a schematic diagram of the enlarged structure at A in the present application; Figure 1 It is a schematic diagram of the enlarged structure at B in the present application;

[0025] Figure 4 It is a schematic diagram of the overall front view cross-sectional structure of the present application when the shunt pipe is in avoidance position;

[0026] Figure 5 It is a schematic diagram of the overall internal visualization structure of the present application; Figure 4 It is a schematic diagram of the enlarged structure at C in the present application;

[0027] Figure 6 It is the overall front view schematic diagram of the working position of the shunt pipe of the present application;

[0028] Figure 7 It is the internal structure schematic diagram of the present application Figure 6 It is the enlarged structure schematic diagram at D in the middle;

[0029] Figure 8 It is the internal structure schematic diagram of the present application.

[0030] Explanation of reference signs:

[0031] 1, dust removal bin; 2, partition; 3, cloth bag cylinder; 4, air pump; 5, swing piece; 6, shunt pipe; 7, nozzle; 8, air pipe; 9, sleeve; 10, first rack; 11, first gear; 12, telescopic drive unit; 13, flip cover; 14, air inlet hole; 15, second rack; 16, second gear; 17, linkage sleeve; 18, linkage rod; 19, limiting piece; 20, neck ring; 21, sealing ring; 22, coil spring; 23, convex ring; 24, transition ring. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme of the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present disclosure.

[0033] Please refer to Figures 1-8 The biomass boiler cloth bag dust removal device provided by the embodiments of the present application comprises a dust removal bin 1, a partition 2 is arranged in the dust removal bin 1, a plurality of cloth bag cylinders 3 are arranged in an array on the partition 2, an air pump 4 is mounted outside the dust removal bin 1, and the biomass boiler cloth bag dust removal device further comprises: a swing piece 5 which is hingedly connected to the inner wall of the dust removal bin 1 and has a free end connected with a shunt pipe 6, a plurality of nozzles 7 are arranged on the shunt pipe 6, and the shunt pipe 6 is in airtight connection with the air pump 4; a driving assembly is used to drive the swing piece 5 to rotate, so as to drive the shunt pipe 6 to move to a working position directly above the cloth bag cylinder 3 or to an avoidance position avoiding the cloth bag cylinder 3, and the nozzles 7 are downwardly aligned with the inside of the cloth bag cylinder 3 when the shunt pipe 6 is in the working position.

[0034] Specifically, the upper end of the dust removal bin 1 is in the shape of a rectangular box, and a compartment is provided on one side. The lower end of the compartment is connected to the main body of the dust removal bin 1. The smoke inlet of the dust removal bin 1 is arranged on the side wall of the compartment, so that the flue gas is guided to flow upward from the bottom of the cloth bag cylinder 3. The lower end of the dust removal bin 1 is funnel-shaped, and a switching valve is provided at the bottom leak port. When the dust removal work is carried out inside the dust removal bin 1, the switching valve remains closed, while when the cloth bag cylinder 3 is cleaned inside the dust removal bin 1 or after cleaning, the switching valve is opened. The partition plate 2 is arranged near the upper end of the dust removal bin 1. The partition plate 2 divides the inside of the dust removal bin 1 into a smoke-free area on the upper side and a dust removal area on the lower side. The exhaust port of the dust removal bin 1 is arranged on the side wall of the smoke-free area. The cloth bag cylinders 3 are arranged in a rectangular array, and can be preferably arranged in 4×4, 4×5, 5×5, etc. The upper end of the cloth bag cylinder 3 is open. The cloth bag cylinder 3 includes a framework and a cloth bag fixedly sleeved on the framework. The framework is fixed on the partition plate 2. The inside of the cloth bag is separated from the dust removal area and communicated with the smoke-free area. The compartment of the dust removal bin 1 forms a step outside the dust removal bin 1. The air pump 4 is fixedly installed on the step. An air pipe 8 penetrating into the dust removal bin 1 is provided on the air pump 4. A sleeve 9 rotatably sleeved on the air pipe 8 is synchronously rotated on the swing member 5. The sleeve 9 corresponds to the rotating shaft of the swing member 5, so that the swing member 5 can smoothly rotate around the air pipe 8. A plurality of air pipes 8 are provided and are independently controlled for jetting. A shunt pipe 6 is arranged corresponding to a row of cloth bag cylinders 3. Multiple rows of cloth bag cylinders 3 are matched with multiple shunt pipes 6. The air pipes 8 and the shunt pipes 6 are connected in one-to-one correspondence. A plurality of nozzles 7 are equidistantly arranged on the shunt pipe 6. The interval between adjacent nozzles 7 is consistent with the interval between adjacent cloth bag cylinders 3 in the row of cloth bag cylinders 3 corresponding to the shunt pipe 6. Swing members 5 are arranged at both ends of the shunt pipe 6. A cavity is provided inside the swing member 5 connected to one side of the air pipe 8 to connect the air pipe 8 and the shunt pipe 6. A convex ring 23 is provided at the end of the air pipe 8 to be limited in the cavity. The axial direction of the air pipe 8 is parallel to the axial direction of the shunt pipe 6. The rotating shaft of the swing member 5 coincides with the axial direction of the air pipe 8. The air pipe 8 corresponds to the center of the distribution direction of a row of cloth bag cylinders 3 connected to the shunt pipe 6. The shunt pipe 6 and the two swing members 5 form a "C" - shaped structure. The swing member 5 rotates in the vertical plane, so that the shunt pipe 6 makes an arc movement in the vertical plane. The rotation range of the swing member 5 is preferably 90°. Specifically, when the swing member 5 rotates downward to drive the shunt pipe 6 to move to the lowest height of the arc, at this time, the shunt pipe 6 is closest to the cloth bag cylinder 3, and the nozzle 7 faces downward corresponding to the cloth bag cylinder 3, which is the working position of the shunt pipe 6. When the swing member 5 rotates upward to drive the shunt pipe 6 to move, the "C" - shaped structure is horizontally arranged, and the shunt pipe 6 deviates from the cloth bag cylinder 3 above the maximum distance in the horizontal direction to avoid blocking above the cloth bag cylinder 3, which is the avoidance position of the shunt pipe 6. The driving component drives one side swing member 5 to rotate, and the other side swing member 5 rotates accordingly.In actual use, when the cloth bag cylinder 3 normally carries out the flue gas filtering process, that is, when the upward airflow is generated inside the cloth bag cylinder 3, the driving assembly drives the swing piece 5 to rotate upward, so that the shunt pipe 6 carrying the nozzle 7 moves to the avoidance position away from the upper part of the cloth bag cylinder 3, avoiding shielding the upward airflow, and when the cloth bag cylinder 3 needs to be cleaned, the driving assembly drives the swing piece 5 to rotate downward, so that the shunt pipe 6 carrying the nozzle 7 moves to the working position close to and directly opposite the upper part of the cloth bag cylinder 3, at this time the nozzle 7 is downwardly aligned with the inside of the cloth bag cylinder 3, and the cleaning work can be normally carried out.

[0035] Compared with the prior art, the biomass boiler cloth bag dust removal device provided in the embodiment of the application can, when the cloth bag cylinder 3 normally carries out the flue gas filtering process, that is, when the upward airflow is generated inside the cloth bag cylinder 3, the driving assembly drives the swing piece 5 to rotate upward, so that the shunt pipe 6 carrying the nozzle 7 moves to the avoidance position away from the upper part of the cloth bag cylinder 3, avoiding shielding the upward airflow, and when the cloth bag cylinder 3 needs to be cleaned, the driving assembly drives the swing piece 5 to rotate downward, so that the shunt pipe 6 carrying the nozzle 7 moves to the working position close to and directly opposite the upper part of the cloth bag cylinder 3, at this time the nozzle 7 is downwardly aligned with the inside of the cloth bag cylinder 3, and the cleaning work can be normally carried out.

[0036] As a preferred technical solution of the embodiment, the driving assembly comprises a first rack 10 movably arranged in the dust removal bin 1, the sleeve 9 is coaxially sleeved with a first gear 11 engaged with the first rack 10, and a telescopic driving unit 12 for driving the first rack 10 to move is mounted on the inner wall of the dust removal bin 1. Specifically, the extension direction of the first rack 10 is perpendicular to the axial direction of the sleeve 9, the first rack 10 can cross above the plurality of air pipes 8 and is connected with the corresponding first gear 11 on the sleeve 9, so that the synchronous movement of each row of shunt pipes 6 can be controlled. The telescopic driving unit 12 is preferably a pneumatic cylinder or an electric telescopic rod, which actively controls the movement of the first rack 10 under the control of a servo system, and then engages the first gear 11 to drive the sleeve 9 to rotate, and the swing piece 5 rotates with the sleeve 9 to realize the movement of the shunt pipe 6. A supporting block is arranged on the inner wall of the dust removal bin 1, and the first rack 10 is slidably connected to the supporting block through a key groove structure to obtain support and guidance.

[0037] In the existing cloth bag cylinder 3, the upper part is completely open, and when the nozzle 7 blows air downward into the cloth bag cylinder 3, the completely open upper end of the cloth bag cylinder 3 is easy to overflow the airflow, so that the air cleaning effect of the nozzle 7 is general. The following embodiments are proposed to solve this problem.

[0038] In another embodiment of the present application, the upper end of the cloth bag cylinder 3 is rotatably provided with a flip cover 13, the flip cover 13 is provided with an air inlet hole 14 matched with the nozzle 7, the rotation of the flip cover 13 is linked with the rotation of the sleeve 9 through a linkage assembly, when the shunt pipe 6 is in the working position, the flip cover 13 is rotated to a horizontal state to block the upper end of the cloth bag cylinder 3, and the nozzle 7 corresponds to the air inlet hole 14 downward, when the shunt pipe 6 is in the avoidance position, the flip cover 13 is rotated to a vertical state to completely open the upper end of the cloth bag cylinder 3, specifically, the rotating shaft of the flip cover 13 is inside the cloth bag cylinder 3, so that when the flip cover 13 is in the horizontal state, it blocks the opening of the upper end of the cloth bag cylinder 3 inside; the flip cover 13 is circular, the outer diameter is matched with the inner diameter of the cloth bag cylinder 3; the thickness of the flip cover 13 is preferably 2-5mm, when the flip cover 13 is in the vertical state, the direction is consistent with the upward airflow in the cloth bag cylinder 3, so the influence on the upward airflow is minimal; the air inlet hole 14 is arranged offset from the center of the flip cover 13, which can reduce the possibility of interference between the movable shunt pipe 6 carrying the nozzle 7 and the flip cover 13 under the linkage rotation of the flip cover 13 and the sleeve 9; during the switching process of the shunt pipe 6 from the avoidance position to the working position, the flip cover 13 is switched from the vertical state to the horizontal state, and during the above process, the shunt pipe 6 and the flip cover 13 do not interfere with each other; when the shunt pipe 6 is in the avoidance position, the flip cover 13 is in the vertical state, so that the upward airflow in the cloth bag cylinder 3 is not blocked and flows smoothly, and when the shunt pipe 6 is in the working position, the flip cover 13 is in the horizontal state, and the nozzle 7 corresponds to the air inlet hole 14, so that the nozzle 7 blows air into the cloth bag cylinder 3 through the air inlet hole 14 to clean the adhered dust, so that the opening of the cloth bag cylinder 3 is no longer easy to overflow the airflow, and the air jet cleaning effect is improved.

[0039] As a preferred technical scheme of the present embodiment, the linkage assembly includes a second rack 15 movably arranged on the partition plate 2, one end of the rotating shaft of the flip cover 13 is coaxially connected with a second gear 16 engaged with the second rack 15, the outer side of the sleeve 9 is threadedly sleeved with a linkage sleeve 17, the linkage sleeve 17 is fixedly connected with the second rack 15 through a linkage rod 18, specifically, the second rack 15 is slidably connected on the upper side of the partition plate 2 through a key groove structure, so that the movement direction of the second rack 15 is perpendicular to the axial direction of the rotating shaft of the flip cover 13 and consistent with the axial direction of the sleeve 9; each flip cover 13 on the cloth bag cylinder 3 corresponding to the shunt pipe 6 is drivingly connected through the second gear 16; when the sleeve 9 rotates, on the one hand, it drives the swing piece 5 to rotate to realize the position switching of the shunt pipe 6, and on the other hand, it causes the linkage sleeve 17 to move axially through the thread feeding action with the linkage sleeve 17, and drives the second rack 15 to move through the linkage rod 18, the second rack 15 engages and drives the second gear 16 to realize the switching of the rotating state of the flip cover 13.

[0040] In another embodiment of the present application, the swing member 5 is elastically connected with the sleeve 9, and the inner wall of the dust removal bin 1 is provided with a limiting member 19 for preventing the swing member 5 from rotating. After the swing member 5 drives the shunt pipe 6 to switch to the working position, the swing member 5 is limited by the limiting member 19, and the sleeve 9 continues to rotate to drive the flip cover 13 to rotate to the horizontal state, and the nozzle 7 is inserted into the air inlet hole 14. Specifically, the swing member 5 is provided with a neck ring 20 sleeved on the air pipe 8, the sleeve 9 is provided with a sealing ring 21 coaxially sleeved outside the neck ring 20, and the inner wall of the sealing ring 21 is connected with the neck ring 20 through a coil spring 22. The limiting member 19 is arranged below the air pipe 8, and the swing member 5 abuts against the limiting member 19 when the shunt pipe 6 is in the working position. In actual use, when the swing member 5 rotates downward to switch the shunt pipe 6 to the working position, the swing member 5 abuts against the limiting member 19 when the shunt pipe 6 reaches the working position, and cannot continue to rotate. At the same time, since the swing member 5 is elastically connected with the sleeve 9, the sleeve 9 continues to rotate relative to the swing member 5 by resisting the elastic force between the swing member 5 and the sleeve 9, that is, the coil spring 22 stores elastic potential energy under stress, thereby driving the flip cover 13 to rotate to the horizontal state. In other words, the time for the flip cover 13 to rotate to the horizontal state is delayed relative to the time for the shunt pipe 6 to reach the working position. Therefore, the shunt pipe 6 carries the nozzle 7 to the working position first, and then the air inlet hole 14 is sleeved outside the nozzle 7 by rotating the flip cover 13, that is, the nozzle 7 is inserted into the air inlet hole 14. Under the condition of avoiding interference, the nozzle 7 is inserted into the air inlet hole 14 to spray air, which can prevent the gas from overflowing to a greater extent, and further improves the air cleaning effect. Conversely, during the rotation of the sleeve 9, the flip cover 13 directly rotates with the sleeve 9 since the coil spring 22 is in a compressed state, so that the air inlet hole 14 is separated from the nozzle 7, and then the swing member 5 rotates with the sleeve 9, that is, the shunt pipe 6 starts to rotate and switch to the avoidance position.

[0041] As a further preferred technical solution of the embodiment, a sealing assembly is arranged between the neck ring 20 and the sealing ring 21, and the sealing assembly is triggered by the relative rotation of the neck ring 20 and the sealing ring 21 to enhance the sealing between the swing piece 5 and the air pipe 8. Specifically, due to the rotational connection between the swing piece 5 and the air pipe 8, there is a possibility of air leakage between the swing piece 5 and the air pipe 8 under the action of the instantaneous air jet of the air pipe 8, and the embodiment is proposed to solve this problem. The sealing assembly includes a convex ring 23 arranged at the end of the air pipe 8 and a transition ring 24 rotationally connected to the inner side of the sealing ring 21, a coil spring 22 is connected between the sealing ring 21 and the transition ring 24, and the transition ring 24 is screwedly sleeved on the neck ring 20; the convex ring 23 is embedded in the cavity of the swing piece 5; the transition ring 24 is embedded in the inner side of the sealing ring 21 and is axially fixed relative to the sealing ring 21, but is elastically limited in axial rotation by the coil spring 22. In actual use, after the swing piece 5 is rotated to switch the shunt pipe 6 to the working position, the sleeve pipe 9 continues to rotate and relative rotation with the swing piece 5 and the neck ring 20 occurs, and then the coil spring 22 is deformed. Due to the elastic force generated by the deformation of the coil spring 22, the transition ring 24 is forced to rotate relative to the neck ring 20, and the rotation direction of the rotation triggers the screw transmission between the transition ring 24 and the neck ring 20, so that the neck ring 20 moves away from the sleeve pipe 9, and then the inner wall of the cavity of the swing piece 5 is more closely attached to the convex ring 23, thereby enhancing the sealing between the neck ring 20 and the sealing ring 21, preventing air leakage, and under the elastic force, after the sleeve pipe 9 is rotated, it can be automatically restored and relaxed, without hindering the subsequent rotation of the swing piece 5 relative to the air pipe 8.

[0042] The foregoing merely describes certain exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present application.

Claims

1. A bag filter dust collector for a biomass boiler, comprising a dust collection chamber (1), a partition (2) disposed inside the dust collection chamber (1), a plurality of filter bags (3) arranged in an array on the partition (2), and an air pump (4) installed outside the dust collection chamber (1), characterized in that, Also includes: The swinging component (5) is hinged to the inner wall of the dust removal chamber (1), and its free end is connected to a diversion pipe (6). Multiple nozzles (7) are provided on the diversion pipe (6), and the diversion pipe (6) is airtightly connected to the air pump (4). The drive assembly is used to drive the swing member (5) to rotate so as to move the diverter tube (6) to a working position directly above the bag cylinder (3) or to an avoidance position above the bag cylinder (3). When the diverter tube (6) is in the working position, the nozzle (7) is directed downward toward the inside of the bag cylinder (3).

2. The biomass boiler bag filter dust collector according to claim 1, characterized in that, The air pump (4) is provided with an air pipe (8) that extends through into the dust removal chamber (1), and the swinging part (5) is provided with a sleeve (9) that is rotatably sleeved on the air pipe (8).

3. The biomass boiler bag filter dust collector according to claim 2, characterized in that, Both ends of the diverter tube (6) are provided with swinging parts (5), and the swinging parts (5) connected to one side of the air pipe (8) have a cavity inside so that the air pipe (8) and the diverter tube (6) can communicate.

4. The biomass boiler bag filter dust collector according to claim 2, characterized in that, The drive assembly includes a first rack (10) movably disposed inside the dust removal chamber (1), a first gear (11) coaxially sleeved on the sleeve (9) and meshing with the first rack (10), and a telescopic drive unit (12) for driving the first rack (10) to move is installed on the inner wall of the dust removal chamber (1).

5. The biomass boiler bag filter dust collector according to claim 2, characterized in that, The upper end of the bag tube (3) is rotatably provided with a flap (13). The flap (13) has an air inlet (14) that matches the nozzle (7). The rotation of the flap (13) is linked to the rotation of the sleeve (9) through the linkage component. When the diverter (6) is in the working position, the flap (13) rotates to a horizontal state to cover the upper end of the bag tube (3), and the nozzle (7) is facing downwards and corresponds to the air inlet (14). When the diverter (6) is in the avoidance position, the flap (13) rotates to a vertical state to make the upper end of the bag tube (3) fully open.

6. The biomass boiler bag filter dust collector according to claim 5, characterized in that, The linkage assembly includes a second rack (15) movably mounted on the partition (2), a second gear (16) coaxially connected to one end of the rotating shaft of the flip cover (13) and meshing with the second rack (15), and a linkage sleeve (17) threaded onto the outer side of the sleeve (9), and the linkage sleeve (17) is fixedly connected to the second rack (15) through the linkage rod (18).

7. The biomass boiler bag filter dust collector according to claim 6, characterized in that, The swinging component (5) is elastically rotatably connected to the sleeve (9). The inner wall of the dust removal chamber (1) is provided with a limiting component (19) that prevents the swinging component (5) from rotating. After the swinging component (5) drives the diversion pipe (6) to switch to the working position, the swinging component (5) is limited by the limiting component (19), while the sleeve (9) continues to rotate so that the flip cover (13) rotates to a horizontal state and the nozzle (7) is inserted into the air inlet (14).

8. The biomass boiler bag filter dust collector according to claim 7, characterized in that, The swing member (5) is provided with a neck ring (20) sleeved on the trachea (8), and the sleeve (9) is provided with a sealing ring (21) coaxially sleeved outside the neck ring (20). The inner wall of the sealing ring (21) is connected to the neck ring (20) through a coil spring (22).

9. The biomass boiler bag filter dust collector according to claim 8, characterized in that, A sealing assembly is provided between the neck ring (20) and the sealing ring (21). The sealing assembly is triggered by the relative rotation of the neck ring (20) and the sealing ring (21) to enhance the sealing between the swing member (5) and the trachea (8).

10. The biomass boiler bag filter dust collector according to claim 9, characterized in that, The sealing assembly includes a convex ring (23) provided at the end of the air tube (8) and a transition ring (24) rotatably connected to the inner side of the sealing ring (21). A coil spring (22) is connected between the sealing ring (21) and the transition ring (24). The transition ring (24) is spirally sleeved on the neck ring (20).

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