Lifting assembly of small unit isolation rapping system of dust remover

Abstract

According to the novel technical scheme of the lifting assembly of the dust remover small unit isolation rapping system, the structure of the lifting assembly of the dust remover small unit isolation rapping system is improved, it can be guaranteed that the air leakage rate of dust remover equipment is within a certain limit value, and dust in a dust removal shell is prevented from escaping into a heat preservation box; and normal operation of the heat preservation box can be ensured. The dust remover comprises a heat preservation box provided with a box side socket and a dust removal shell provided with a shell side socket; the lifting assembly comprises a lifting rod part, a box side sealing assembly and a shell side sealing assembly, and the lifting rod part enters the heat preservation box through the box side insertion opening and enters the dust removal shell through the shell side insertion opening; a box side spacing part is defined between a part of the outer wall of the lifting rod part and the box side insertion opening, and a shell side spacing part is defined between the part of the outer wall of the lifting rod part and the shell side insertion opening; the box side sealing assembly is arranged on the heat preservation box so as to seal the box side interval part, and the shell side sealing assembly is arranged on the dust removal shell so as to seal the shell side interval part.

Description

Technical Field

[0001] The present application relates to the technical field of electrostatic precipitators, and in particular to a lifting assembly of a small unit isolation rapping system of a precipitator. Background Art

[0002] With the gradual increase of environmental protection awareness, many dust collectors have set up small unit isolation vibration systems at the rear end of the final electric field. By dividing the small unit to shut down the flue gas channel and coordinating with the timing control of the vibration system, the zero wind speed vibration cleaning of the small unit at the final electric field is achieved. The dust removal efficiency is effectively improved, and the dust collector can operate stably and long-term with ultra-low emissions.

[0003] The opening and closing of the flue gas channel by the small unit isolation rapping system is achieved by opening and closing the orifice gate valve at the end of the electric field, and the opening and closing of the orifice gate valve is completed by the lifting force provided by the lifting assembly. The lifting rod of the lifting assembly is installed inside the dust removal shell to connect the orifice gate valve inside the electric field; the lifting rod also passes through the insulation box to the outdoors and is connected to the cylinder transmission of the small unit isolation rapping system. When the lifting rod moves relative to the insulation box and the dust removal shell, how to ensure that the air leakage rate of the dust collector equipment is within a certain limit and prevent dust from escaping from the dust removal shell to the insulation box, and how to ensure the normal operation of the insulation box are technical problems that technical personnel in this field urgently need to solve. Utility Model Content

[0004] One purpose of the present application is to provide a new technical solution for the lifting component of the dust collector small unit isolation vibration system. By improving the structure of the lifting component of the dust collector small unit isolation vibration system, it can not only ensure that the air leakage rate of the dust collector equipment is within a certain limit and prevent the dust in the dust collector shell from escaping into the insulation box, but also ensure the normal operation of the insulation box.

[0005] One aspect of the present application provides a lifting assembly of a dust collector small unit isolation rapping system, wherein the dust collector comprises an insulation box provided with a box side socket and a dust collector shell provided with a shell side socket; the lifting assembly comprises a lifting rod, a box side sealing assembly and a shell side sealing assembly, the lifting rod enters the insulation box through the box side socket, and enters the dust collector shell through the shell side socket; a box side partition is defined between a portion of the outer wall of the lifting rod and the box side socket, and a shell side partition is defined between the lifting rod and the shell side socket; the box side sealing assembly is arranged on the insulation box to form a seal with the box side partition, and the shell side sealing assembly is arranged on the dust collector shell to form a seal with the shell side partition.

[0006] By adopting the technical solution in the present application, the box-side spacer and the shell-side spacer can be sealed by the box-side sealing assembly and the shell-side sealing assembly. On the one hand, the air leakage rate of the dust collector equipment can be ensured within a certain limit, and the dust in the dust collection housing can be prevented from escaping into the insulation box through the shell-side spacer. On the other hand, the inner cavity of the insulation box can also be gas-sealed from the outside through the box-side sealing assembly, ensuring the normal operation of the insulation box. Specifically, it can prevent the inner cavity of the insulation box from forming gas communication with the outside through the box-side spacer, and prevent the entry of external humid cold air into the insulation box, resulting in the formation of condensate, thereby ensuring the stable and efficient operation of the insulation box.

[0007] Optionally, both the shell-side sealing assembly and the box-side sealing assembly have a sealing box, and the sealing box is correspondingly disposed to cover the box-side spacer and the shell-side spacer;

[0008] Each of the sealing boxes has a filling cavity, the volume of the filling cavity is adjustable, the filling cavity is filled with a sealing filler, a part of the lifting rod portion is located in the filling cavity, and the sealing filler can be extruded against the outer wall of the lifting rod portion.

[0009] In this embodiment, by providing a filling cavity with an adjustable volume, after the sealing filler and the outer wall of the lifting rod portion are worn, the volume of the filling cavity can be reduced, so as to always keep the sealing filler extruded against the outer wall of the lifting rod portion.

[0010] Optionally, each of the sealing boxes has a shell portion and a cover portion, at least a part of the cover portion is inserted into the shell portion, and the filling cavity is defined by the cover portion and the shell portion, and the cover portion is threadedly connected to the shell portion. By means of the threaded connection between the shell portion and the cover portion, the volume of the filling cavity can be reduced by axially moving the cover portion by circumferentially rotating the cover portion, and the operation method is simple, the structure is simple, and the axial movement accuracy is high.

[0011] Optionally, it further includes a box-side bushing for accommodating a part of the lifting rod portion, and the box-side bushing penetrates through the wall of the insulation box; the top end of the box-side bushing has an end plate, the box-side channel penetrates through the end plate to form the box-side socket, and the end plate constitutes a part of the wall of the filling cavity.

[0012] By providing the box-side bushing, the structural strength of the position where the insulation box cooperates with the lifting rod portion can be increased.

[0013] Optionally, the housing part is welded to the end plate, and the end plate constitutes part of the filling cavity of the box-side sealing assembly. By adopting this embodiment, the box-side socket is an opening formed on the end plate, and a box-side gap is formed radially between the outer wall of the part of the lifting rod part located in the opening and the opening. The way the end plate constitutes the wall part of the filling cavity can enable the packing in the filling cavity to block the box-side gap, so that it can meet the clearance fit between the lifting rod part and the box-side socket for movement, and at the same time can ensure the sealing performance of the box-side gap, forming a gas seal between the heat preservation box and the outside.

[0014] Optionally, it further includes a rain cover, which is connected to the lifting rod part, and the connection position is located on the upper side of the box-side sealing assembly, and at least part of the box-side sealing assembly is located inside the rain cover. By setting the rain cover, it can prevent the box-side sealing assembly from being wetted by external rain.

[0015] Optionally, the shell-side sealing assembly further includes a bottom plate, which is connected inside the housing part and is spaced from the shell-side socket in the height direction. The surface of the bottom plate away from the shell-side socket constitutes part of the cavity wall of the filling cavity. In this way, two cavities can be formed inside the housing part, an interval cavity below the bottom plate and a filling cavity above the bottom plate. The interval cavity covers the shell-side socket, and the filling cavity is located above the interval cavity, which can play a role in sealing the shell-side gap.

[0016] Optionally, the bottom plate is provided with a plate-side socket, and part of the lifting rod part is located inside the plate-side socket, and the radial dimension of the plate-side socket is smaller than the radial dimension of the shell-side socket. In this way, the processing accuracy of the bottom plate can be reduced, which is convenient for processing.

[0017] Optionally, the cover part of the shell-side sealing assembly has a stop pipe part and a pressing plate. The pressing plate is sleeved outside the lifting rod part. The lifting rod part has a limiting part, and the pressing plate can be axially pressed against the stop pipe part through the limiting part; a buffer pad is arranged between the pressing plate and the stop pipe part. This can avoid the impact force between the pressing plate and the stop pipe part.

[0018] Optionally, the dust collector small unit isolation vibration system includes an output shaft. The lifting rod part includes a pipe section, a rod section, an upper connecting sleeve and a lower connecting sleeve. The pipe section is detachably connected to the output shaft through the upper connecting sleeve; the rod section is detachably connected to the pipe section through the lower connecting sleeve. By setting the lifting rod part in a multi-section detachable installation manner, it is convenient for subsequent maintenance and repair of the lifting component.

[0019] Through the following detailed description of the exemplary embodiments of this specification with reference to the drawings, other features and advantages of this specification will become clear. Description of the Drawings

[0020] The drawings incorporated in and forming a part of the specification illustrate embodiments of the specification and, together with the description thereof, are used to explain the principles of the specification.

[0021] Figure 1 is a partial schematic view of the dust collector in an embodiment of the present application;

[0022] Figure 2 is Figure 1 a partially enlarged schematic view of the structure on the side of the heat preservation box of the lifting component;

[0023] Figure 3 is Figure 2 a partially enlarged schematic view of the structure;

[0024] Figure 4 is Figure 1 a partially enlarged schematic view of the structure on the side of the dust removal housing of the lifting component;

[0025] Figure 5 is Figure 4 a schematic view of the structure of the top beam bushing in ;

[0026] Figure 6 is Figure 4 a schematic view of the structure of the shell side seal assembly in.

[0027] Figures 1-6 In :

[0028] 1. Fixed orifice plate; 2. Movable orifice plate; 3. Dust removal housing; 4. Heat preservation box; 5. Top plate; 6. Rod section; 7. Top beam bushing; 71. First pipe body reinforcement plate; 72. Protective pipe; 73. Second pipe body reinforcement plate; 8. Shell side seal assembly; 81. Shell side shell part; 82. Bottom plate; 83. Shell side cover part; 84. Stop pipe part; 9. Packing; 10. Buffer pad; 11. Pressure plate; 12. Pipe section; 13. Lower coupling sleeve; 14. Box side bushing; 141. Sleeve; 142. Outer sleeve reinforcement plate; 143. End plate; 144. Box side shell part; 145. Box side cover part; 15. Rain cover; 16. Sealing ring; 17. Steel belt clamp group; 18. Upper coupling sleeve; 19. Cylinder. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the present application will be further described in detail below with reference to the drawings and specific implementation manners.

[0030] In the traditional technical solution, only a rain shield is provided at the position where the lifting rod passes through the heat preservation box to prevent rainwater from flowing into the interior of the heat preservation box. However, the rain shield usually cannot achieve gas sealing between the inner cavity of the heat preservation box and the outside, which results in direct contact between the high-temperature air inside the heat preservation box and the outdoor normal-temperature air. Due to the large temperature difference between the inside and outside of the heat preservation box, condensed water is likely to form on the outer wall of the lifting rod. On the one hand, the condensed water is easily evaporated inside the heat preservation box, increasing the humidity inside the heat preservation box, resulting in a decline in the insulation performance of the pressure-bearing insulators inside the heat preservation box and affecting the safe operation of the equipment. On the other hand, the condensed water may even leak into the electric field along the lifting rod, causing the ash on the orifice gate valve to harden, affecting the safe operation of the equipment. In addition, the direct heat exchange between the inside and outside of the heat preservation box will cause heat loss of the heat preservation box. To maintain the temperature of the heat preservation box at a certain value, the insulator electric heater will continue to work, resulting in an increase in power consumption, which is not conducive to energy conservation.

[0031] As Figures 1-6 shown, Figure 1 is a partial schematic diagram of the dust collector in the embodiment of the present application; Figure 2 is Figure 1 a partially enlarged schematic diagram of the structure on the side of the lifting component heat preservation box; Figure 3 is Figure 2 a partially enlarged schematic diagram of the structure; Figure 4 is Figure 1 a partially enlarged schematic diagram of the structure on the side of the lifting component dust removal housing; Figure 5 is Figure 4 a schematic diagram of the structure of the top beam bushing in; Figure 6 is Figure 4 a schematic diagram of the structure of the sealing box in.

[0032] As shown in the figure, the present application provides a lifting component of a dust collector small unit isolation vibration knocking system. The dust collector includes a heat preservation box 4 provided with a box-side socket and a dust removal housing 3 provided with a housing-side socket. The lifting component includes a lifting rod part, a box-side sealing component, and a housing-side sealing component 8. The lifting rod part enters the heat preservation box 4 through the box-side socket and enters the dust removal housing 3 through the housing-side socket. A fixed orifice plate 1 and a movable orifice plate 2 are arranged in the dust removal housing 3. The fixed orifice plate 1 is fixed at the end of the flue gas direction between two adjacent anode plates in the last electric field of the electrostatic precipitator, and the movable orifice plate 2 is placed inside the fixed orifice plate 1 and connected to the lifting rod part.

[0033] See Figure 1 , Figure 2 and Figure 4As shown, the box-side socket and the housing-side socket can be openings formed in the wall of the heat preservation box 4, or can be formed by opening a hole in the wall of the heat preservation box 4 and then arranging a box-side bushing 14 in the hole. The box-side bushing 14 extends a certain dimension in the height direction, and its outer wall is hermetically connected to the wall of the heat preservation box 4. The box-side bushing 14 encloses a channel (box-side channel) connecting the outside and the inside of the heat preservation box 4. The box-side socket is the opening of this channel, and the lifting rod part can enter the box-side channel through this opening and then enter the inside of the heat preservation box 4; similarly, the housing-side socket can also be an opening formed in the main body of the dust removal housing 3. For example, if the lifting rod part penetrates the top beam of the dust removal housing 3, then the housing-side socket is located on the top beam of the dust removal housing 3; or the dust removal housing 3 is provided with a top beam bushing 7, and the top beam bushing 7 is hermetically connected to the main body of the dust removal housing 3. The inside of the top beam bushing 7 is used for the lifting rod part to pass through. At this time, the housing-side socket is defined by the top beam bushing 7.

[0034] A box-side spacing part is defined between a part of the outer wall of the lifting rod part and the box-side socket, and a housing-side spacing part is defined between a part of the outer wall of the lifting rod part and the housing-side socket; the box-side spacing part and the housing-side spacing part are formed by the clearance fit between the outer wall of the lifting rod part and the gaps between the housing-side socket and the box-side socket, so that the lifting rod part can move in the height direction along the heat preservation box 4 and the dust removal housing 3; the box-side sealing assembly is arranged on the heat preservation box 4 to seal the box-side spacing part, and the housing-side sealing assembly 8 is arranged on the dust removal housing 3 to seal the housing-side spacing part.

[0035] By adopting the technical solution in the present application, the box-side spacing part and the housing-side spacing part can be sealed by the box-side sealing assembly and the housing-side sealing assembly 8; on the one hand, it can ensure that the air leakage rate of the dust removal equipment is within a certain limit value and prevent the dust in the dust removal housing 3 from escaping into the heat preservation box 4 through the housing-side spacing part; on the other hand, it can also form a gas seal between the inner cavity of the heat preservation box 4 and the outside through the box-side sealing assembly to ensure the normal operation of the heat preservation box 4; specifically, it can prevent the inner cavity of the heat preservation box 4 from forming gas communication with the outside through the box-side spacing part and prevent the external humid cold air from entering the heat preservation box 4 to cause the formation of condensed water, thereby ensuring the stable and efficient operation of the heat preservation box 4; at the same time, by arranging the box-side sealing assembly, it can also provide a secondary guarantee for the air leakage rate of the dust remover.

[0036] In a specific embodiment, both the housing-side sealing assembly 8 and the box-side sealing assembly have a sealing box, and the sealing box correspondingly covers the box-side spacing part and the housing-side spacing part; the sealing box is made of metal and can be hermetically connected by welding. The sealing boxes all have a filling cavity, such as Figure 2 and Figure 4As shown, the filling cavity is filled with a sealing filler 9. The sealing box has corresponding openings in the extension direction of the lifting rod, so that the lifting rod can pass through the sealing box and enter the corresponding shell side socket and box side socket; thus, part of the lifting rod is located in the filling cavity and can move in the height direction relative to the filling cavity, and the sealing filler 9 can be squeezed on the outer wall of the lifting rod. The sealing filler 9 is, for example, an asbestos rope, a rubber ring or a soft graphite packing material. By setting the sealing filler 9 to be tightly against the outer wall of the lifting rod, the box side sealing component and the shell side sealing component 8 are both sealed.

[0037] During long-term use, the sealing packing 9 will wear against the outer wall of the lifting rod, and after long-term accumulation, the sealing failure problem is likely to occur. Further, in order to increase the reliable sealing time of the box side sealing component and the shell side sealing component 8, the volume of the filling cavity in this embodiment is adjustable; in this embodiment, by providing a filling cavity with adjustable volume, after the sealing packing 9 and the outer wall of the lifting rod are worn, the volume of the filling cavity can be reduced, so that the sealing packing 9 and the outer wall of the lifting rod are always kept squeezed.

[0038] In addition to the aforementioned structure, the shell side sealing assembly 8 and the box side sealing assembly can also be a bellows with a certain radial tensile capacity. The bellows is sleeved on the outside of the lifting rod, and one end of the bellows is tightly clamped to the outer wall of the lifting rod; the other end is covered on the corresponding box side socket and shell side socket, and is sealed with the insulation box 4 or the dust removal shell 3 by gluing or other means; in this way, the threaded tube can be stretched and compressed when the lifting rod moves up and down, and form a seal with the shell side socket and the box side socket during the movement of the lifting rod.

[0039] In a specific implementation, the sealed box has a shell and a cover, at least part of the cover is inserted into the shell and defines a filling cavity with the shell, the cover is threadedly connected to the shell, and the cover can be made of a square tube or a polygonal tube; the shell is provided with an internal thread, and the length of the internal thread of the shell is 30mm-50mm.

[0040] By means of threaded connection between the shell and the cover, the cover can be pushed to move axially by circumferential rotation to reduce the volume of the filling cavity, squeezing the filler 9 so that the filler 9 is always pressed against the outer wall of the lifting rod. This operation method is simple, the structure of the sealing box is simple and the axial movement accuracy of the cover is high.

[0041] In the above-mentioned embodiment, in combination with Figure 1 , Figure 2 and Figure 3, the lifting assembly further includes a box side bushing 14 for accommodating a part of the lifting rod portion, and the box side bushing 14 penetrates through the wall of the heat preservation box 4; the box side bushing 14 includes a sleeve 141, and the sleeve 141 extends along the axial direction of the lifting rod portion, its bottom end extends into the heat preservation box 4, and its top end protrudes from the top plate 5 of the heat preservation box 4 and has a certain height from the top plate 5 of the heat preservation box 4; an outer barrel reinforcing plate 142 is arranged outside the sleeve 141, and the outer barrel reinforcing plate 142 is pressed against the top plate 5 of the heat preservation box 4 in the height direction and is welded to the top plate 5; the top end of the box side bushing 14 has an end plate 143, and the end plate 143 protrudes radially to the outside of the sleeve 141, and a box side channel penetrates through the end plate 143 to form a box side socket. By arranging the box side bushing 14, the structural strength of the matching position between the heat preservation box 4 and the lifting rod portion can be increased.

[0042] In Figure 2 and Figure 3 In the embodiment shown, the shell part of the box side sealing assembly is defined as the box side shell part 144, and the cover part of the box side sealing assembly is defined as the box side cover part 145. The bottom end of the box side shell part is welded to the upper surface of the end plate 143 away from the heat preservation box 4, so as to jointly enclose a filling cavity with the end plate 143. The box side shell part 144 is welded to the end plate 143, and the end plate 143 constitutes a part of the filling cavity of the box side sealing assembly. By adopting this embodiment, the box side socket is an opening formed on the end plate 143, and a box side gap is formed radially between the outer wall of the part of the lifting rod portion located in the opening and the opening. The way that the end plate 143 constitutes the wall part of the filling cavity can enable the filler 9 in the filling cavity to seal the box side gap. In this way, while meeting the clearance fit between the lifting rod portion and the box side socket for movement, the sealing performance of the box side gap can be ensured, and a gas seal is formed between the heat preservation box 4 and the outside.

[0043] In a specific way, referring to Figures 1-3 , the lifting assembly further includes a rain shield 15, and the rain shield 15 is connected to the lifting rod portion; specifically, the top end of the rain shield 15 is fixed to the outer wall of the lifting rod portion through a steel belt clamp group 17, and a sealing ring 16 is also arranged at the position where the steel belt clamp group 17 is clamped to the lifting rod portion. The position where the steel belt clamp group 17 is connected to the lifting rod portion is located above the box side sealing assembly. A cavity is enclosed inside the rain shield 15, and at least part of the box side sealing assembly is located in the cavity inside the rain shield 15. When the lifting rod portion moves up to the limit position, the bottom of the rain shield 15 also moves up, but it is necessary to ensure that at least the top end of the box side sealing assembly is still located inside the rain shield 15. By arranging the rain shield 15, external rainwater is prevented from wetting the box side sealing assembly.

[0044] In some alternative embodiments, please combine Figure 1 , Figures 4-6, the shell-side seal assembly 8 further includes a bottom plate 82. The shell part of the shell-side seal assembly 8 is defined as the shell-side shell part 81, and the cover part of the shell-side seal assembly 8 is defined as the shell-side cover part 83. The bottom plate 82 is connected inside the shell-side shell part 81, that is, the bottom plate 82 is welded to the inner wall of the shell-side shell part 81 and is spaced from the shell-side socket in the height direction. The surface of the bottom plate 82 away from the shell-side socket constitutes part of the wall of the filling cavity. In this way, two cavities can be formed inside the shell-side shell part 81, the spaced cavity below the bottom plate 82 and the filling cavity above the bottom plate 82. The spaced cavity covers the shell-side socket, and the filling cavity is located above the spaced cavity, which can play a role in sealing the shell-side space.

[0045] Specifically, the lifting assembly further includes a top beam bushing 7. The top beam bushing 7 includes an axially extending protection tube 72, a tube body strengthening plate 71 and a tube body strengthening plate 73. The protection tube 72 provides a passage for the lifting rod part to pass through the top beam. The inner diameter of the protection tube 72 is 30 mm - 50 mm larger than the diameter of the lifting rod part to ensure that the lifting rod part has enough working space and to consider appropriate installation errors. The tube body strengthening plate 71 is arranged on the upper side of the top beam and is welded to the top beam. The tube body strengthening plate 73 is arranged on the lower side of the top beam and is welded to the top beam. The top end of the protection tube 72 extends out of the top beam. The box-side socket is the pipe orifice at the top end of the protection tube 72. The shell-side shell part 81 covers the outside of the tube body strengthening plate 71 and is welded to the top beam, thereby forming a substantially sealed spaced cavity.

[0046] Furthermore, the bottom plate 82 is provided with a plate-side socket. A part of the lifting rod part is located inside the plate-side socket. The plate-side socket is 2 mm - 4 mm larger than the diameter of the lifting rod part. The radial dimension of the plate-side socket is smaller than the radial dimension of the shell-side socket. The installation accuracy requirement between the plate-side socket and the lifting rod part is relatively high, which not only ensures no friction with the lifting rod part but also ensures that the packing 9 is not easily loosened due to too large a gap, resulting in a decrease in the sealing effect;

[0047] In some other alternative embodiments, the shell-side cover portion 83 of the shell-side seal assembly 8 has a cover body, a stop tube portion 84, and a pressing plate 11. The cover body is threadedly connected to the shell-side shell portion 81. The stop tube portion 84 axially protrudes from the cover body, and the lifting rod portion is inserted into the stop tube portion 84. The end wall of the stop tube portion 84 is opposite to the pressing plate 11 in the height direction. The pressing plate 11 is sleeved on the outside of the lifting rod portion, and the lifting rod portion has a limiting member. Specifically, the limiting member is, for example, a double limiting nut structure, which is threadedly connected to the lifting rod portion and locked at a set height of the lifting rod portion. When the lifting rod portion moves downward to the limit position, the pressing plate 11 can be axially pressed against the end wall of the stop tube portion 84 through the limiting member. A buffer pad 10 is provided between the pressing plate 11 and the stop tube portion 84. Thereby, the impact force between the pressing plate 11 and the stop tube portion 84 can be avoided. At the same time, the load of the lifting rod portion can also be transmitted to the stop tube portion 84 through the pressing plate 11, and then transmitted to the shell-side cover portion 83, the shell-side shell portion 81, and finally transmitted to the top beam of the dust removal housing 3, thereby reducing part of the load of the lifting rod portion and increasing the service life of the lifting assembly.

[0048] In some other specific embodiments, as Figure 1 , Figure 2 and Figure 4 shown, the lifting assembly includes an output shaft. The lifting rod portion includes a pipe section 12, a rod section 6, an upper coupling sleeve 18, and a lower coupling sleeve 13. The pipe section 12 is detachably connected to the output shaft of the cylinder 19 through the upper coupling sleeve 18. The rod section 6 is detachably connected to the pipe section 12 through the lower coupling sleeve 13. The radial dimensions of the part of the pipe section 12 and the output shaft located inside the upper coupling sleeve 18 are different. It can be that the radial dimension of the pipe section 12 is greater than the radial dimension of the output shaft, or the radial dimension of the pipe section 12 is less than the radial dimension of the output shaft, so as to facilitate the connection between the pipe section 12 and the output shaft. The pipe section 12, the output shaft, and the upper coupling sleeve 18 are threadedly connected. The radial dimensions of the pipe section 12 and the rod section 6 are also different. It can be that the radial dimension of the pipe section 12 is greater than that of the rod section 6, or the radial dimension of the pipe section 12 is less than the radial dimension of the rod section 6. The pipe section 12 and the rod section 6 are respectively threadedly connected to the lower coupling sleeve 13. In the example shown in the figure, the upper coupling sleeve 18 is located outside the heat preservation box 4 and on the side of the box-side seal assembly away from the heat preservation box 4. The lower coupling sleeve 13 is located inside the heat preservation box 4 and on the side of the shell-side seal assembly 8 away from the dust removal housing 3. In the traditional technical solution, the lifting rod portion is an integral structure. When local maintenance is required inside the lifting assembly or the heat preservation box 4, the maintenance cost is high, the difficulty is great, and even the matching performance of the device may decline after maintenance, affecting the service life of the device. By setting the lifting rod portion to be detachably installed in multiple sections, it is convenient for the subsequent maintenance and repair of the lifting assembly.

[0049] Among them, in order to form a threaded fit with the double limit nut and the lower coupling sleeve 13, an external thread is provided on the outer wall of the lifting rod portion. The length from the top end (the highest position) of the double limit nut to the bottom end (the lowest position) of the lower coupling sleeve 13 is greater than 1.2 times the length of the lower coupling sleeve 13, ensuring sufficient space for maintenance and disassembly.

[0050] Compared with the prior art, the advantages of this technical solution include:

[0051] First, compared with the traditional technology, a box-side seal assembly is added, eliminating the direct contact between the hot and cold air inside and outside the insulation box 4, avoiding heat loss and condensate generation in the insulation box 4, having the effects of anti-condensation and energy conservation, ensuring the more safe and stable operation of the dust collector, with a simple structure, low cost, significant functional effects, and high comprehensive benefits.

[0052] Second, compared with the traditional technology, the structure of the shell-side seal assembly 8 is optimized, the sealing performance is greatly improved and the volume of the filling cavity is adjustable, ensuring the sealing effect of the shell-side seal assembly 8, guaranteeing the body air leakage rate of the dust collector equipment. Combined with the double guarantee of the box-side seal assembly, the risk of increasing the body air leakage rate is eliminated, and the operation safety of the dust collector is more effectively guaranteed.

[0053] Third, compared with the traditional technology, by setting the pipe section 12 and the rod section 6, the pipe section 12 and the rod section 6 are detachably connected through the lower coupling sleeve 13, and a portable breakable disassembly and maintenance point is set inside the insulation box 4, minimizing the impact on the overall device when local maintenance of the equipment is required, reducing the maintenance difficulty and cost, and extending the service life of the device.

[0054] Specific examples are used in the text to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A lifting assembly of a dust collector small unit isolation rapping system, wherein the dust collector comprises an insulation box with a box side socket and a dust collector housing with a shell side socket; characterized in that: The lifting assembly includes a lifting rod, a box side sealing assembly and a shell side sealing assembly, the lifting rod enters the insulation box through the box side socket, and enters the dust removal shell through the shell side socket; A box side partition is defined between a portion of the outer wall of the lifting rod and the box side socket, and a shell side partition is defined between the outer wall of the lifting rod and the shell side socket; the box side sealing assembly is arranged on the insulation box to form a seal with the box side partition, and the shell side sealing assembly is arranged on the dust removal shell to form a seal with the shell side partition.

2. The lifting assembly of the dust collector small unit isolation rapping system according to claim 1 is characterized in that: The shell-side sealing assembly and the box-side sealing assembly both include sealing boxes, and the sealing boxes are correspondingly covered on the box-side partition and the shell-side partition; The sealing box is provided with a filling cavity, the volume of which is adjustable, the filling cavity is filled with sealing filler, part of the lifting rod is located in the filling cavity, and the sealing filler can be squeezed on the outer wall of the lifting rod.

3. The lifting assembly of the dust collector small unit isolation rapping system according to claim 2 is characterized in that: The sealed box comprises a shell portion and a cover portion, at least a portion of the cover portion is inserted into the shell portion and defines the filling cavity with the shell portion, and the cover portion is threadedly connected to the shell portion.

4. The lifting assembly of the dust collector small unit isolation rapping system according to claim 3 is characterized in that: It also includes a box side bushing for accommodating part of the lifting rod, and the box side bushing passes through the wall of the insulation box; the top end of the box side bushing is provided with an end plate, and the end plate is provided with the box side socket.

5. The lifting assembly of the dust collector small unit isolation rapping system according to claim 4 is characterized in that: The shell portion of the box side sealing assembly is welded to the end plate, and the end plate constitutes part of the filling cavity of the box side sealing assembly.

6. The lifting assembly of the dust collector small unit isolation rapping system according to claim 1 is characterized in that: It also includes a rain cover, which is connected to the lifting rod. The connection position between the two is located on the upper side of the box side sealing assembly, and at least part of the box side sealing assembly is located in the rain cover.

7. The lifting assembly of the dust collector small unit isolation rapping system according to claim 3 is characterized in that: The shell side sealing assembly also includes a bottom plate, which is connected to the shell portion of the shell side sealing assembly and is spaced apart from the shell side socket in the height direction. The surface of the bottom plate away from the shell side socket constitutes part of the cavity wall of the filling cavity.

8. The lifting assembly of the dust collector small unit isolation rapping system according to claim 7 is characterized in that: The bottom plate is provided with a plate side socket, part of the lifting rod is located in the plate side socket, and the radial dimension of the plate side socket is smaller than the radial dimension of the shell side socket.

9. The lifting assembly of the dust collector small unit isolation rapping system according to claim 7, characterized in that: The cover portion of the shell side sealing assembly has a stop tube portion and a pressure plate, the pressure plate is sleeved on the outside of the lifting rod portion, the lifting rod portion has a limiter, and the pressure plate can be axially pressed against the stop tube portion through the limiter; a buffer pad is arranged between the pressure plate and the stop tube portion.

10. The lifting assembly of the dust collector small unit isolation rapping system according to any one of claims 1 to 9, characterized in that: It also includes an output shaft, the lifting rod portion includes a pipe section, a rod section, an upper connecting sleeve and a lower connecting sleeve, the pipe section and the output shaft are detachably connected via the upper connecting sleeve; the rod section and the pipe section are detachably connected via the lower connecting sleeve.

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