Negative pressure dust collection equipment for boiler

Abstract

The negative pressure dust collection equipment for the boiler comprises a dust collection part, a connecting pipe, a supporting part and a cleaning part, the dust collection part is used for generating negative pressure to adsorb dust, the connecting pipe can be stretched or shortened, one end of the connecting pipe is connected with the dust collection part, and the other end of the connecting pipe is suitable for being led into a flue; the supporting piece is connected with the other end of the connecting pipe, the supporting piece is used for supporting the connecting pipe in the flue, the cleaning piece is arranged at the other end, away from the connecting pipe, of the supporting piece, so that the connecting pipe drives the cleaning piece to move through the supporting piece, and the cleaning piece can rotate around the axial direction of the connecting pipe relative to the connecting pipe; therefore, the cleaning piece can clean the flue. The negative pressure dust collection equipment for the boiler has the advantages of being simple in structure, high in cleaning efficiency and the like.

Description

Technical Field

[0001] The invention relates to the technical field of dust collection equipment, and in particular to a negative pressure dust collection equipment for a boiler. Background Art

[0002] During operation, the boiler body, smoke and air duct, coal mill, dry slag machine and other equipment may leak ash, powder and slag on site due to equipment quality problems or personnel adjustment problems. Due to the ash field and dust accumulation on beams, columns, platforms and other places in the factory, the cleaning workload is large, which seriously affects the civilized production work on site and buries safety hazards for on-site production. Therefore, it is necessary to add a negative pressure dust suction device. At present, negative pressure dust suction equipment generally only vacuums the dust in the external environment of the boiler. The flue gas duct is responsible for discharging flue gas during the combustion process of the boiler. However, the flue gas generated by the combustion of the boiler contains a large amount of smoke and particulate matter. The existing negative pressure dust suction equipment is difficult to handle the smoke and dust box particulate matter in the flue gas duct, causing these substances to accumulate on the inner wall of the duct, which not only affects the smooth discharge of the flue gas, but also may cause corrosion and wear to the duct.

[0003] To solve the above problems, a negative pressure dust collection device for a boiler is proposed. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a negative pressure dust collection device for a boiler that has high cleaning efficiency and prevents smoke and particulate matter from accumulating in the flue.

[0006] The negative pressure dust suction device for a boiler according to an embodiment of the present invention comprises: a dust suction member, which is used to generate negative pressure to absorb smoke and dust; a connecting pipe, which can be extended or shortened, one end of which is connected to the dust suction member, and the other end of which is suitable for passing into the flue, so that the dust suction member absorbs the smoke and dust in the flue through the connecting pipe; a supporting member, which is connected to the other end of the connecting pipe, and the supporting member is used to support the connecting pipe in the flue; a cleaning member, which is arranged at the other end of the supporting member away from the connecting pipe, so that the connecting pipe drives the cleaning member to move through the supporting member, and the cleaning member is rotatable relative to the connecting pipe around the axial direction of the connecting pipe, so that the cleaning member cleans the flue.

[0007] The negative pressure dust suction device for a boiler in the embodiment of the present invention is provided with a dust suction piece, a connecting pipe, a supporting piece and a cleaning piece. The dust suction piece and the connecting pipe can be used to suck dust particles on the inner wall of the flue for processing. The cleaning piece cleans the inner wall of the flue and scrapes off the dust and particles stuck to the inner wall of the flue to prevent dust particles from accumulating on the inner wall of the flue, thereby improving the cleaning efficiency of the negative pressure dust suction device for the boiler and extending the service life of the flue.

[0008] In some embodiments, the negative pressure dust suction equipment for a boiler further includes a driving member, which is connected to the connecting pipe and the cleaning member so that the driving member drives the connecting pipe to extend or shorten, or the driving member drives the cleaning member to rotate.

[0009] In some embodiments, the connecting tube includes a first tube and a second tube, one end of the first tube is connected to the dust collecting member, at least a portion of the second tube is disposed in the first tube and is movable axially relative to the first tube, and the driving member is connected to the second tube so that the second tube moves in the first tube.

[0010] In some embodiments, a mounting hole passing through the first tube is provided on the first tube, and the negative pressure dust collection equipment for the boiler further comprises a first gear and a second gear meshing with each other, the first gear is connected to the driving member so that the driving member drives the first gear to rotate, the second gear is arranged in the first tube and is sleeved outside the second tube so that the second gear drives the second tube to rotate, the second gear passes through the mounting hole and meshes with the first gear so that the first gear drives the second gear to rotate, the inner circumference of the second gear is provided with a first thread, and the outer circumference of the second tube is provided with a second thread matching the first thread so that the second gear rotates to drive the second tube to move in the first tube.

[0011] In some embodiments, the negative pressure dust suction equipment for the boiler also includes: a connecting tube, which is arranged in the first tube and located on the side of the second gear away from the cleaning piece, one end of the connecting tube is connected to the second gear so that the second gear drives the connecting tube to rotate, and at least a portion of the second tube is passed through the connecting tube; a telescopic piece, the telescopic piece includes a base and a telescopic rod, the base is arranged in the first tube and located on the end of the connecting tube away from the cleaning piece, the base is connected to the connecting tube so that the connecting tube drives the base to rotate, and the two ends of the telescopic rod are respectively connected to the base and the cleaning piece so that the telescopic rod drives the cleaning piece to rotate.

[0012] In some embodiments, the cleaning member includes: a rotating tube, which is arranged at one end of the support member away from the connecting tube and can rotate around the axial direction of the connecting tube relative to the connecting tube; and blades, which are arranged on the outer peripheral side of the rotating tube so that the blades rotate with the rotating tube.

[0013] In some embodiments, the blade is in plurality and the plurality of blades are spaced apart around the circumference of the rotating tube.

[0014] In some embodiments, the blade includes: a first blade and a second blade, the first blade is arranged on the second blade, and the second blade is arranged on a rotating tube; a first elastic member, there are multiple first elastic members, the multiple first elastic members are all arranged between the first blade and the second blade and are spaced apart along the length direction of the first blade, and the two ends of the multiple first elastic members are respectively connected to the first blade and the second blade.

[0015] In some embodiments, the support member includes: a support frame, which is arranged between the connecting pipe and the cleaning member and is connected to the connecting pipe; a support rod and a rotating wheel, one end of the support rod is rotatably arranged in the support frame, and the other end of the support rod is located outside the support frame and is provided with a rotating wheel, and the rotating wheel is used to move within the inner circumference of the flue.

[0016] In some embodiments, the support member also includes a second elastic member, which is arranged in the support frame and the two ends of the second elastic member are respectively connected to the support frame and the support frame, and the second elastic member has an elastic force to drive the other end of the support rod to rotate in a direction away from the support frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a negative pressure dust collection device for a boiler according to an embodiment of the present invention.

[0018] Figure 2 It is a schematic structural diagram of a dust collecting component of a negative pressure dust collecting device for a boiler according to an embodiment of the present invention.

[0019] Figure 3 It is a schematic structural diagram of removing dust collecting parts of a negative pressure dust collecting device for a boiler according to an embodiment of the present invention.

[0020] Figure 4 It is an exploded view of removing the dust collecting parts of the negative pressure dust collecting equipment for boiler according to an embodiment of the present invention.

[0021] Figure 5 It is a schematic structural diagram of a support member of a negative pressure dust collection device for a boiler according to an embodiment of the present invention.

[0022] Figure 6 yes Figure 5 Magnified view of A in .

[0023] Figure 7 It is a cross-sectional view of the negative pressure dust collection device for boiler according to an embodiment of the present invention, in which the dust collection piece is removed.

[0024] Figure 8 It is a schematic diagram of the structure of blades of a negative pressure dust collection device for a boiler according to an embodiment of the present invention.

[0025] Negative pressure dust collection equipment for boiler 100;

[0026] Dust collecting part 1;

[0027] Connecting pipe 2; first pipe 21; first section 211; second section 212; mounting hole 213; second pipe 22;

[0028] Support member 3; support frame 31; support rod 32; rotating wheel 33; second elastic member 34; slider 35;

[0029] Cleaning member 4; rotating tube 41; blade 42; first blade 421; second blade 422; first elastic member 423;

[0030] Driving member 5; first gear 6; second gear 7; connecting tube 8; telescopic member 9; base 91; telescopic rod 92. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] The following describes a negative pressure dust collection device 100 for a boiler according to an embodiment of the present invention with reference to the accompanying drawings.

[0033] like Figure 1-8 As shown, the negative pressure dust suction device 100 for a boiler according to an embodiment of the present invention includes a dust suction member 1, a connecting pipe 2, a supporting member 3 and a cleaning member 4.

[0034] The dust collecting member 1 is used to generate negative pressure to absorb smoke and dust. Figure 1-Figure 2 As shown, the dust collecting member 1 may be a negative pressure dust collector, which generates negative pressure through the dust collecting member 1 to absorb smoke particles in the flue.

[0035] The connecting pipe 2 can be extended or shortened, one end of the connecting pipe 2 is connected to the dust collecting member 1, and the other end of the connecting pipe 2 is suitable for passing into the flue, so that the dust collecting member 1 can absorb the smoke in the flue through the connecting pipe 2. Figure 1 and Figure 3As shown, the inlet of the connecting pipe 2 is connected to the dust collecting member 1, and the outlet of the connecting pipe 2 can be placed in the flue and extend in the flue to absorb the smoke and dust in the flue, thereby cleaning the flue.

[0036] The support member 3 is connected to the other end of the connecting pipe 2, and the support member 3 is used to support the connecting pipe 2 in the flue. Figure 1 , Figure 3 and Figure 5 As shown, the support member 3 is arranged at the outlet end of the connecting pipe 2 and connected to the connecting pipe 2, so that the connecting pipe 2 is supported by the support member 3, so that the connecting pipe 2 moves in the flue, preventing the connecting pipe 2 and the flue from being worn, and ensuring the service life of the connecting pipe 2.

[0037] The cleaning member 4 is arranged at the other end of the support member 3 away from the connecting pipe 2, so that the connecting pipe 2 drives the cleaning member 4 to move through the support member 3, and the cleaning member 4 can rotate relative to the connecting pipe 2 around the axial direction of the connecting pipe 2, so that the cleaning member 4 cleans the flue. Figure 1 , Figure 3 and Figure 7 As shown, the cleaning member 4 is arranged on the right side of the support member 3 and is rotatable relative to the support member 3, so that the cleaning member 4 cleans the inner circumference of the flue, thereby improving the cleaning efficiency of the negative pressure dust collection device 100 for the boiler.

[0038] The negative pressure dust suction device 100 for a boiler according to an embodiment of the present invention is provided with a dust suction member 1, a connecting pipe 2, a supporting member 3 and a cleaning member 4. The dust suction member 1 and the connecting pipe 2 can be used to suck dust particles on the inner wall of the flue for processing. The inner wall of the flue is cleaned by the cleaning member 4, and dust and particles adhering to the inner wall of the flue are scraped off to prevent dust particles from accumulating on the inner wall of the flue, thereby ensuring smooth discharge of flue gas and preventing dust particles from corroding and wearing the flue. The cleaning efficiency of the negative pressure dust suction device 100 for a boiler is improved, and the service life of the flue is extended.

[0039] In some embodiments, the negative pressure dust collection device 100 for a boiler further includes a driving member 5, which is connected to the connecting pipe 2 and the cleaning member 4, so that the driving member 5 drives the connecting pipe 2 to extend or shorten, or the driving member 5 drives the cleaning member 4 to rotate. Thus, the driving member 5 simultaneously controls the extension and contraction of the connecting pipe 2 and the rotation of the cleaning member 4, providing a power source for the extension and contraction of the connecting pipe 2 and the rotation of the cleaning member 4.

[0040] In some embodiments, the connecting tube 2 includes a first tube 21 and a second tube 22, one end of the first tube 21 is connected to the dust collecting member 1, at least part of the second tube 22 is disposed in the first tube 21 and is movable relative to the axial direction of the first tube 21, and the driving member 5 is connected to the second tube 22 so that the second tube 22 moves in the first tube 21. Specifically, Figure 5As shown, the first tube 21 includes a first section 211 and a second section 212, the first section 211 is a soft tube body extending in the left-right direction, the second section 212 is a hard tube body extending in the left-right direction, the first section 211 and the second section 212 are connected, and the inlet of the first section 211 is connected to the dust collecting member 1, the outlet of the second section 212 is arranged in the flue, the second tube 22 is penetrated in the second section 212, the driving member 5 and the supporting member 3 are both connected to the second tube 22, so that the second tube 22 is driven to move in the left-right direction in the second section 212 through the cooperation of the driving member 5 and the supporting rod 32.

[0041] In some embodiments, the first tube 21 is provided with a mounting hole 213 that passes through the first tube 21. The negative pressure dust collection device 100 for a boiler further includes a first gear 6 and a second gear 7 that mesh with each other. The first gear 6 is connected to the driving member 5 so that the driving member 5 drives the first gear 6 to rotate. The second gear 7 is disposed in the first tube 21 and sleeved outside the second tube 22 so that the second gear 7 drives the second tube 22 to rotate. The second gear 7 passes through the mounting hole 213 and meshes with the first gear 6 so that the first gear 6 drives the second gear 7 to rotate. The inner circumference of the second gear 7 is provided with a first thread, and the outer circumference of the second tube 22 is provided with a second thread that matches the first thread so that the second gear 7 rotates to drive the second tube 22 to move in the first tube 21. Specifically, as Figure 3 and Figure 4 As shown, the upper end surface of the right end portion of the second section 212 of the first tube 21 is provided with a mounting hole 213 which penetrates the second section 212 in the up-down direction. The driving member 5 can be a driving motor fixed on the outer circumferential surface of the second section 212. The first gear 6 is installed on the output shaft of the driving member 5, and the first gear 6 is driven to rotate by the driving member 5. The second gear 7 is sleeved on the outer circumferential surface of the second tube 22 and is located on the second section 212. The upper half of the second gear 7 extends out of the mounting hole 213 through the mounting hole 213. The inner circumferential surface of the second gear 7 is provided with a first thread, and the outer circumferential surface of the second tube 22 is provided with a second thread. The second gear 7 and the second tube 22 are threadedly matched by the first thread and the second thread, so that the first gear 6 and the second gear 7 are driven to rotate by the driving member 5, and the second gear 7 drives the second tube 22 to move in the left and right directions through the first thread and the second thread.

[0042] When performing vacuuming, the vacuum cleaner 1 is turned on to generate a rotating air flow, which reduces the air pressure inside the vacuum cleaner 1 and forms a negative pressure area. The air outside the vacuum cleaner 1 is sucked into the vacuum cleaner 1 through the connecting pipe 2 under the action of the air pressure difference. When cleaning the flue, the second tube 22 is aligned with the flue, and then the driving member 5 is driven to drive the first gear 6 to rotate, and the first gear 6 drives the second gear 7 to rotate on the outer peripheral side of the second tube 22. Since the inner wall of the second gear 7 is threadedly connected to the second tube 22, the second tube 22 will gradually move away from the right side of the first tube 21 into the cavity of the flue, thereby cleaning the cavity of the flue, solving the problem that the existing negative pressure vacuum cleaner is difficult to process the dust box particles in the flue, so that these substances will accumulate on the inner wall of the pipe, which not only affects the smooth discharge of the flue gas, but also may cause corrosion and wear to the pipe.

[0043] In some embodiments, the negative pressure dust collection device 100 for a boiler further includes a connecting tube 8 and a telescopic member 9 .

[0044] The connecting tube 8 is arranged in the first tube 21 and is located on the side of the second gear 7 away from the cleaning member 4. One end of the connecting tube 8 is connected to the second gear 7 so that the second gear 7 drives the connecting tube 8 to rotate. At least part of the second tube 22 is passed through the connecting tube 8. Specifically, Figure 7 As shown, the connecting tube 8 is a hard cylinder extending in the left-right direction. The connecting tube 8 is arranged in the second section 212 of the first tube 21 and is located on the left side of the second gear 7. The right end of the connecting tube 8 is connected to the second gear 7, so that the connecting tube 8 is driven to rotate in the first section 211 through the second gear 7.

[0045] The telescopic member 9 includes a base 91 and a telescopic rod 92. The base 91 is disposed in the first tube 21 and is located at an end of the connecting tube 8 away from the cleaning member 4. The base 91 is connected to the connecting tube 8 so that the connecting tube 8 drives the base 91 to rotate. The two ends of the telescopic rod 92 are respectively connected to the base 91 and the cleaning member 4 so that the telescopic rod 92 drives the cleaning member 4 to rotate. Specifically, Figure 7 As shown, the base 91 is fixed in the connecting tube 8 and the telescopic rod 92 has a multi-section telescopic tube, the left end of the telescopic rod 92 is fixedly mounted on the base 91, and the right end of the telescopic rod 92 is fixedly mounted on the cleaning member 4, so that the driving member 5 drives the cleaning member 4 to rotate through the cooperation of the connecting tube 8 and the telescopic member 9, and drives the cleaning member 4 to move left and right in the flue through the second tube 22.

[0046] It is worth noting that a through hole penetrating the base 91 is provided on the base 91 , and the first section 211 and the second section 212 are connected through the through hole.

[0047] In some embodiments, the cleaning member 4 includes a rotating tube 41 and blades 42 .

[0048] The rotating tube 41 is disposed at one end of the support member 3 away from the connecting tube 2 and the rotating tube 41 is rotatable relative to the connecting tube 2 around the axial direction of the connecting tube 2. Figure 7 As shown, the rotating tube 41 is a hard tube body extending in the left and right directions. The rotating tube 41 is connected to the right end of the telescopic member 9, and the left end of the rotating tube 41 is against the support member 3. Therefore, when the second tube 22 drives the support member 3 to move to the right, the support member 3 drives the connecting tube 2 to move to the right, and the rotating tube 41 rotates by itself through the telescopic rod 92.

[0049] The blades 42 are provided on the outer peripheral side of the rotating tube 41 so that the blades 42 rotate along with the rotating tube 41. Figure 7 As shown, the blades 42 extend in the inward and outward directions and are arranged on the outer peripheral surface of the rotating tube 41 , so that the inner peripheral surface of the flue is cleaned by the blades 42 .

[0050] In some embodiments, there are multiple blades 42, and the multiple blades 42 are arranged at intervals around the circumference of the rotating tube 41. Thus, the cleaning efficiency and cleaning effect of the cleaning member 4 are improved by the multiple blades 42.

[0051] The blade 42 includes a first blade 421 , a second blade 422 and a first elastic member 423 .

[0052] The first blade 421 is disposed on the second blade 422, and the second blade 422 is disposed on the rotating tube 41. Specifically, Figure 7 and Figure 8 As shown, the cross-sectional areas of the first blade 421 and the second blade 422 gradually decrease from the inside to the outside of the trapezoidal blade 42, one side of the second blade 422 is arranged on the outer peripheral side of the rotating tube 41, and the first blade 421 is arranged on the other side of the second blade 422.

[0053] There are multiple first elastic members 423, each of which is disposed between the first blade 421 and the second blade 422 and spaced apart along the length direction of the first blade 421. Both ends of the multiple first elastic members 423 are connected to the first blade 421 and the second blade 422, respectively. Figure 7 and Figure 8As shown, the first elastic member 423 may be a rectangular rubber, and a through hole is provided on the first elastic member 423 that penetrates the first elastic member 423 along the thickness direction of the blade 42. A plurality of first elastic members 423 are arranged between the first blade 421 and the second blade 422 at intervals along the left-right direction, and both ends of the first elastic member 423 are connected to the first blade 421 and the second blade 422. When the blade 42 scrapes the inner wall of the flue, the first blade 421 will deflect at an angle under the pressure, driving the first elastic member 423 to deform and dent through the through hole. Therefore, through the elasticity of the through hole, the first blade 421 will be driven to be close to the inner wall of the flue through the first elastic member 423, thereby improving the efficiency of scraping the inner wall of the flue. Thus, a plurality of first elastic members 423 are used to ensure that the blades 42 are tightly connected to each other, thereby preventing the first blade 421 from loosening or falling off during movement, and also allowing flexible movement between the first blade 421 and the second blade 422 to adapt to the uneven surface of the inner wall of the flue and improve the cleaning effect. The first elastic member 423 can absorb and buffer the impact and vibration received by the blade 42 during movement, thereby protecting the blade 42 and the rotating tube 41 from damage. The flexible design of the first elastic member 423 enables the first blade 421 and the second blade 422 to better fit the inner wall of the flue and increase the contact area. The elastic characteristics of the first elastic member 423 can prevent the blade 42 from getting stuck during movement, thereby ensuring smooth movement of the blade 42.

[0054] In some embodiments, the support member 3 includes a support frame 31 , a support rod 32 and a rotating wheel 33 .

[0055] The support frame 31 is disposed between the connecting pipe 2 and the cleaning member 4 and is connected to the connecting pipe 2 .

[0056] One end of the support rod 32 is rotatably disposed in the support frame 31, and the other end of the support rod 32 is located outside the support frame 31 and is provided with a rotating wheel 33, and the rotating wheel 33 is used to move within the inner circumference of the flue. Figure 5 and Figure 6 As shown, the support frame 31 is a cylindrical support frame 31, which is arranged at the right end of the connecting pipe 2 and connected to the connecting pipe 2, the support frame 31 is against the left side of the cleaning piece 4, there are multiple support rods 32, the right ends of the multiple support rods 32 are hinged in the support frame 31 and the left ends of the multiple support rods 32 are hinged with a rotating wheel 33, so that the right end of the second tube 22 is positioned by the cooperation of the rotating wheel 33 and the support rod 32 to prevent the second tube 22 from wearing against the inner wall of the flue.

[0057] The support member 3 further includes a second elastic member 34, which is disposed in the support frame 31 and has two ends connected to the support frame 31 and the support rod 32, respectively. The second elastic member 34 has an elastic force that drives the other end of the support rod 32 to rotate in a direction away from the support frame 31. Specifically, Figure 5and Figure 6 As shown, a slider 35 is provided on the support frame 31, and the slider 35 is inserted into the support frame 31 and can be moved on the support frame 31 along the left and right directions. The support rod 32 is hinged on the slider 35, and the second elastic member 34 is a compression spring. The second elastic member 34 is arranged on the right side of the slider 35 and inserted into the support frame 31, and the two ends of the second elastic member 34 are respectively connected to the slider 35 and the support frame 31. The second elastic member 34 can push the slider 35 to move leftward, and the left end of the support rod 32 moves outward under the restriction of the support frame 31, thereby driving the rotating wheel 33 to abut against the inner wall of the flue, which is not only convenient for moving on the inner wall of the flue, but also can match flue pipes with different inner diameters.

[0058] When the second tube 22 moves into the cavity of the flue, the support frame 31 will drive the support rod 32 and the rotating wheel 33 to be in the flue. At this time, the rotating wheel 33 will be squeezed by the inner wall of the flue, driving the support rod 32 to rotate, driving the slider 35 to press the second elastic member 34. Through the reaction force of the second elastic member 34, the support rod 32 will be driven to reset through the slider 35, thereby driving the rotating wheel 33 to press against the inner wall of the flue, which not only facilitates the second tube 22 to move on the inner wall of the flue, but also can match flues with different inner diameters.

[0059] In order to further better explain the above embodiment, the present invention also provides an implementation scheme, a method for implementing a negative pressure dust collection device 100 for a boiler, comprising the following steps:

[0060] Step 1: Turn on the dust collecting member 1 to generate a rotating air flow. The air flow reduces the air pressure inside the dust collecting member 1, forming a negative pressure area. The air outside the dust collecting member 1 is sucked into the dust collecting member 1 through the connecting pipe 2 under the action of the air pressure difference. The second pipe 22 is aligned with the pipeline, and then the driving member 5 is driven to drive the first gear 6 to rotate. The first gear 6 drives the second gear 7 to rotate on the inner wall of the first pipe 21. Since the inner wall of the second gear 7 is threadedly connected to the second pipe 22, the second pipe 22 will gradually move away from the bottom of the first pipe 21 to the cavity of the flue, thereby cleaning the cavity of the flue;

[0061] Step 2: When the second gear 7 rotates, the cleaning member 4 is driven to rotate through the connecting tube 8 and the telescopic member 9, and the rotating tube 41 of the cleaning member 4 drives the blades 42 to rotate, and the blades 42 are used to scrape the inner wall of the flue to scrape off the dust and particles stuck on the inner wall of the flue, thereby improving the cleaning efficiency;

[0062] Step 3: When the second tube 22 moves into the cavity of the flue, the support frame 31 will drive the support rod 32 and the rotating wheel 33 to be in the cavity of the flue. At this time, the rotating wheel 33 will be squeezed by the inner wall of the flue, driving the angle of the support rod 32 to rotate, driving the slider 35 to press the second elastic member 34, and through the reaction force of the second elastic member 34, the support will be driven through the slider 35 to reset, thereby driving the rotating wheel 33 to press against the inner wall of the flue, so as to facilitate the movement of the second tube 22 on the inner wall of the flue. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0067] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A negative pressure dust collection device for a boiler, characterized in that: include: A dust collecting member, the dust collecting member is used to generate negative pressure to absorb smoke and dust; A connecting pipe, the connecting pipe can be extended or shortened, one end of the connecting pipe is connected to the dust collecting member, and the other end of the connecting pipe is suitable for passing into the flue, so that the dust collecting member can absorb the smoke and dust in the flue through the connecting pipe; A support member connected to the other end of the connecting pipe, wherein the support member is used to support the connecting pipe in the flue; A cleaning piece is arranged at the other end of the support member away from the connecting pipe so that the connecting pipe drives the cleaning piece to move through the support member. The cleaning piece is rotatable relative to the connecting pipe around the axial direction of the connecting pipe so that the cleaning piece cleans the flue.

2. The negative pressure dust collection equipment for boiler according to claim 1, characterized in that: It also includes a driving member, which is connected to the connecting tube and the cleaning member so that the driving member drives the connecting tube to extend or shorten, or the driving member drives the cleaning member to rotate.

3. The negative pressure dust collection equipment for boiler according to claim 2, characterized in that: The connecting pipe includes a first pipe and a second pipe, one end of the first pipe is connected to the dust collecting member, at least a portion of the second pipe is arranged in the first pipe and is movable relative to the axial direction of the first pipe, and the driving member is connected to the second pipe so that the second pipe moves in the first pipe.

4. The negative pressure dust collection equipment for boiler according to claim 3, characterized in that: The first tube is provided with a mounting hole that passes through the first tube. The negative pressure dust collection equipment for the boiler also includes a first gear and a second gear that mesh with each other. The first gear is connected to the driving member so that the driving member drives the first gear to rotate. The second gear is arranged in the first tube and is sleeved outside the second tube so that the second gear drives the second tube to rotate. The second gear passes through the mounting hole and meshes with the first gear so that the first gear drives the second gear to rotate. The inner circumferential surface of the second gear is provided with a first thread, and the outer circumferential surface of the second tube is provided with a second thread that cooperates with the first thread so that the second gear rotates to drive the second tube to move in the first tube.

5. The negative pressure dust collection equipment for boiler according to claim 4, characterized in that: Also includes: A connecting tube, the connecting tube is arranged in the first tube and is located on a side of the second gear away from the cleaning member, one end of the connecting tube is connected to the second gear so that the second gear drives the connecting tube to rotate, and at least a part of the second tube is passed through the connecting tube; A telescopic piece, the telescopic piece includes a base and a telescopic rod, the base is arranged in the first tube and is located at an end of the connecting tube away from the cleaning piece, the base is connected to the connecting tube so that the connecting tube drives the base to rotate, and the two ends of the telescopic rod are respectively connected to the base and the cleaning piece so that the telescopic rod drives the cleaning piece to rotate.

6. The negative pressure dust collection equipment for boiler according to claim 1, characterized in that: The cleaning member comprises: A rotating tube, the rotating tube being arranged at one end of the supporting member away from the connecting tube and being rotatable relative to the connecting tube around the axial direction of the connecting tube; The blades are arranged on the outer peripheral side of the rotating tube so that the blades rotate with the rotating tube.

7. The negative pressure dust collection equipment for boiler according to claim 6, characterized in that: There are a plurality of blades, and the plurality of blades are arranged at intervals around the circumference of the rotating tube.

8. The negative pressure dust collection equipment for boiler according to claim 6, characterized in that: The blade comprises: A first blade and a second blade, wherein the first blade is arranged on the second blade, and the second blade is arranged on a rotating tube: A first elastic member, wherein there are a plurality of first elastic members, each of which is disposed between the first blade and the second blade and spaced apart along the length direction of the first blade, and both ends of the plurality of first elastic members are respectively connected to the first blade and the second blade.

9. The negative pressure dust collection equipment for boiler according to claim 1, characterized in that: The support member comprises: A support frame, the support frame is arranged between the connecting pipe and the cleaning member and is connected to the connecting pipe; A support rod and a rotating wheel, one end of the support rod is rotatably arranged in the support frame, and the other end of the support rod is located outside the support frame and is provided with a rotating wheel, and the rotating wheel is used to move in the inner circumference of the flue.

10. The negative pressure dust collection equipment for boiler according to claim 9, characterized in that: The support member also includes a second elastic member, which is arranged in the support frame and has two ends connected to the support frame and the support frame respectively, and the second elastic member has an elastic force that drives the other end of the support rod to rotate in a direction away from the support frame.

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