An energy-saving docking device for the movable dust removal pipeline of the hot repair vehicle of the ladle

Abstract

The present invention provides an energy-saving docking device for a mobile dust removal pipeline of a hot repair vehicle for a ladle, which can achieve a sealed docking between the main air duct and the on-board pipeline interface of the mobile device, improve the dust removal efficiency, and reduce the energy waste rate. By setting a telescopic pipeline assembly and a first inflatable sealing ring, when performing dust removal operations, the mobile device drives to the corresponding interface position; at the interface position, the moving pipeline assembly and the telescopic pipeline assembly are aligned with the axis of the fixed pipeline interface; the telescopic pipeline assembly and the moving pipeline assembly move relative to each other and are inserted into the inlet pipeline of the main air duct, and then the first inflatable sealing ring seals between the inlet pipeline of the main air duct and the telescopic pipeline assembly; the diameter of the docking end port of the telescopic pipeline assembly is designed to be smaller than the diameter of the interface end of the inlet pipeline of the main air duct, so that even if the central axes of the two are offset, the docking end port of the telescopic pipeline assembly can be inserted into the inner cavity of the interface end of the inlet pipeline of the main air duct.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental protection dust removal and energy conservation, and particularly to an energy-saving docking device for a mobile dust removal pipeline of a hot repair vehicle for a ladle. Background Art

[0002] In industries such as iron and steel metallurgy, mines, and cement, mobile devices such as unloaders, hot repair vehicles for ladles, and slag treatment devices that work in a single-machine, multi-station, and track-running mode are mostly in working environments prone to generating dust and soot. To meet the requirements of environmental protection dust removal, mobile devices are usually equipped with on-board dust collection systems; a fixed dust collection main air duct for centralized treatment is laid beside multiple working points along the track; the on-board dust collection system usually includes a dust and soot capture device and a conveying pipeline. When the mobile device stops for work, the dust collection system set on the mobile device cooperates with the fixed dust collection main air duct, and relying on the negative pressure of the fixed dust collection main air duct, the dust and soot removal requirements of a single machine or multiple stations are realized.

[0003] The dust collection system set on the mobile device is provided with functional units such as a dust collection hood and on-board pipelines; the on-board pipelines have a docking port structure with the main air duct of the dust collection main pipeline. Valves and docking ports corresponding to multiple stations are set on the fixed dust collection main air duct. When the mobile device equipped with a dust collection system stops at a working point, the docking port structure of the on-board pipeline is axially aligned with the docking port of the fixed dust collection main air duct; under the negative pressure generated by the dust removal fan in the fixed dust collection main air duct, the dust and soot generated at the working point are sucked into the fixed dust collection main air duct through the on-board dust collection system pipeline and then transported to the centralized dust removal treatment device at the end point.

[0004] Such as Figure 1 and Figure 2 shown, it is a schematic structural diagram of a fixed dust collection main air duct for receiving dust in a centralized dust removal device in the prior art. On the main air duct 1, according to the working stations, a plurality of inlet pipeline structures 2 for receiving dust are arranged. When the mobile device equipped with a dust collection system stops at the working station, the dust collection system is docked with the main air duct 1 through the on-board pipeline interface 3. According to the nature of the work, in fact, there is a need for no less than two working stations, Figure 1 In the embodiment, only two working stations, namely Station A and Station B, are intercepted. The parking position number of the mobile device running on the track and the working station number of the corresponding main air duct inlet pipeline are determined by the factory dispatching system.

[0005] The mobile device conveys dust and soot to the main air duct 1 through the interface docking method, and the specific steps are as Figure 2As shown in the figure, it includes two steps S1 and S2. S1: The mobile device travels on the track, and through position adjustment, the axis of the on-board pipe interface 3 on the mobile device is aligned with the axis of the inlet pipe 2 on the main air duct 1 assigned by the system for it, so as to achieve interface docking; the arrow marked D in the figure indicates the moving direction of the on-board pipe interface on the track mobile device; S2: The dust removal fan at the end of the inlet pipe 2 generates negative pressure, and sucks the dust and soot in the on-board pipe interface 3 into the main air duct 1 for subsequent processing.

[0006] However, at present, most of the on-board dust removal pipes of track-mounted mobile devices and the fixed dust collection main air ducts use end-face flanges to implement the corresponding positions of the pipe orifices in the parked position; there is a gap between the flange of the on-board dust removal pipe of the mobile device and the fixed main air duct with end-face flanges, resulting in extremely large negative pressure losses and high energy consumption of the main air duct; at the same time, dust / soot in the workplace is prone to unorganized emissions, and the environmental pollution phenomenon is relatively serious.

[0007] Although there are also insertion connection forms for the on-board dust removal pipes of mobile devices and the fixed dust collection main air ducts in the prior art, however, although the design intention of the equipment requires that the inlet pipe 2 on the fixed main air duct and the on-board pipe interface 3 of the mobile device be designed with aligned axes, due to reasons such as position errors in the parked position and structural deformation after long-term use, the axis between the inlet pipe 2 on the fixed main air duct and the on-board pipe interface 3 will deviate and cannot be accurately aligned. At the same time, actually restricted by the driving conditions, the outline of the mobile device during track driving and the outlines of surrounding facilities must have no interference and maintain a certain safety distance. Therefore, there is a certain gap at the docking position of the on-board pipe interface 3 and the inlet pipe 2 during actual use. Due to the existence of the gap between the on-board pipe interface 3 of the mobile device and the inlet pipe 2 on the fixed main air duct, it is difficult for the negative pressure value at the on-board dust removal point to reach the expected value, weakening the negative pressure effect of the dust removal fan. At the same time, due to the existence of the gap, a large amount of air with low dust content directly enters the fixed main air duct 1 in a short-circuit form, reducing the dust removal efficiency; to make up for the efficiency loss and ensure the dust removal effect, usually the method of increasing the air volume of the dust removal fan is adopted; and the dust removal fan is often a large energy consumer in enterprises, thus causing great waste of energy. Summary of the Invention

[0008] In order to solve the problem that when the existing mobile dust removal pipes are docked, there is a gap at the docking position, resulting in a large amount of air with low dust content directly entering the main air duct, the present invention provides an energy-saving docking device for the mobile dust removal pipes of the hot repair vehicle for the ladle, which can achieve sealed docking between the main air duct and the on-board pipe interface of the mobile device, improve the dust removal efficiency, and reduce the energy waste rate.

[0009] The technical solution of the present invention is as follows: An energy-saving docking device for the mobile dust removal pipes of the hot repair vehicle for the ladle, characterized in that it includes: a main air duct inlet component, a telescopic pipe component, and a mobile pipe component;

[0010] The main air duct inlet assembly is installed on the fixed main air duct; the telescopic duct assembly and the movable duct assembly are installed on the mobile device and move together with the mobile device; the movable duct assembly is connected to the dust storage mechanism of the mobile device.

[0011] The main air duct inlet assembly includes: a main air duct inlet pipe and a first inflatable sealing ring. The main air duct inlet pipe is installed at the inlet of the main air duct branch with its axis perpendicular to the axis of the main air duct.

[0012] The diameter of the docking end port of the telescopic duct assembly is smaller than the diameter of the interface end of the main air duct inlet pipe.

[0013] The telescopic duct assembly is installed in the movable duct assembly. The telescopic duct assembly and the horizontal part of the movable duct assembly are coaxial and the inner cavities communicate with each other. The telescopic duct assembly realizes the linear motion of inserting into or withdrawing from the main air duct inlet pipe by relative movement with the movable duct assembly.

[0014] The first inflatable sealing ring is installed in the main air duct inlet pipe. After the telescopic duct assembly is inserted into the main air duct inlet assembly, the first inflatable sealing ring seals the interface by inflation.

[0015] Its further features are as follows:

[0016] The movable duct assembly includes: a movable duct body, an inner pipe structure, a support groove structure and a second inflatable sealing ring.

[0017] The movable duct body is of a cylindrical structure. One end of the movable duct body is an open end facing the main air duct, and the other end is connected to the dust collection system of the mobile device.

[0018] One end of the inner pipe structure extends out of the open end of the movable duct body, and the other end is arranged in the inner cavity of the movable duct body and is hermetically connected to the inner cavity of the movable duct body. An annular gap with one end open is formed between the outer wall of the inner pipe structure and the inner cavity of the movable duct; the telescopic duct assembly is sleeved on the outer periphery of the inner pipe structure and realizes the contraction movement based on the annular gap.

[0019] The support groove structure is an annular groove; the support groove is concentric with the movable duct body, is arranged outside the inlet of the annular gap, and is located on the outer periphery of the end of the inner pipe structure extending out of the movable duct body; the support groove structure opens towards the inner pipe structure, and the second inflatable sealing ring is installed in the inner cavity of the support groove structure.

[0020] After inflation, the second inflatable sealing ring presses the inner pipe structure against the outer periphery of the telescopic pipe assembly to seal between the two. At the same time, it also seals the opening of the annular gap, so that the inner cavity of the annular gap forms a static pressure chamber;

[0021] The movable pipe assembly further includes: a telescopic drive cylinder assembly;

[0022] The telescopic drive cylinder assembly is arranged on the outer wall of the movable pipe body. The output end of the cylinder is parallel to the axis of the movable pipe body and points to the open end of the movable pipe body; the output end of the telescopic drive cylinder assembly is connected to the telescopic pipe assembly based on a hinge connection, and the hinge axis is perpendicular to the output end of the cylinder;

[0023] The inner pipe structure includes: a contraction part, a straight cylinder part and an outward expansion part. Both the contraction part and the outward expansion part are frustum-shaped cylinder structures; the narrower end of the contraction part is arranged towards the open end of the movable pipe body and extends out of the open end of the movable pipe body. The wider end of the contraction part is connected to one end of the straight cylinder part, the other end of the straight cylinder part is connected to the narrower end of the outward expansion part, the diameter of the wider end of the outward expansion part is adapted to the inner cavity diameter of the movable pipe body, and the outer wall of the wider end of the outward expansion part is hermetically connected to the inner cavity of the movable pipe body to form the annular gap;

[0024] The telescopic pipe assembly includes: a telescopic pipe and a traction flange;

[0025] The traction flange is arranged on the telescopic pipe and is connected to the telescopic drive structure;

[0026] The telescopic pipe includes: three straight cylinder diversion sections and two conical diversion sections;

[0027] The three straight cylinder diversion sections are arranged in sequence and the diameters gradually increase. The diameter of the largest straight cylinder diversion section is adapted to the diameter of the annular gap cavity of the movable pipe assembly; one conical diversion section is arranged between every two adjacent straight cylinder diversion sections; the straight cylinder diversion section with the largest diameter is movably inserted into the annular gap for linear motion;

[0028] The movable pipe assembly further includes: a guiding structure;

[0029] The guiding structure includes: a guiding hole structure and a guiding rod; the guiding hole structure is arranged on the movable pipe body;

[0030] The guiding rod is arranged parallel to the central axis of the movable pipe body and the telescopic pipe; one end of the guiding rod is installed on the outer wall of the telescopic pipe through a guiding rod fixing structure, and the other end of the guiding rod is movably inserted into the channel of the guiding hole structure;

[0031] The main air duct inlet pipe includes: an inlet straight pipe and an inlet connecting pipe;

[0032] One end of the inlet straight pipe is connected to the inlet of the main air duct branch, and the other end is connected to the inlet connecting pipe;

[0033] The inlet connecting pipe includes: a first straight cylinder section, a tapered cylinder section, and a second straight cylinder section that are coaxially arranged in sequence and have interconnected inner cavities. One end of the first straight cylinder section is connected to the inlet straight pipe, and the other end is connected to the narrower end of the tapered cylinder section. The wider end of the tapered cylinder section is connected to the second straight cylinder section; the first inflatable sealing ring is installed in the inner cavity of the second straight cylinder section;

[0034] The main air duct inlet assembly further includes: a branch switch valve;

[0035] The branch switch valve is arranged at a position in the inner cavity of the inlet straight pipe adjacent to the inlet connecting pipe; the inlet of the main air duct branch where it is located is opened or closed through the branch switch valve;

[0036] The first inflatable sealing ring and the second inflatable sealing ring have the same structure;

[0037] The structure of the inflatable sealing ring includes: an air inlet pipe, an inflatable ring pipe, and a wear-resistant ring pipe. The inflatable ring pipe is made of a high-temperature resistant rubber and plastic material, the wear-resistant ring pipe is made of a dip-coated woven material, the inflatable ring pipe communicates with the air inlet pipe, and the wear-resistant ring pipe wraps around the outside of the inflatable ring pipe;

[0038] The setting angles of the open end of the movable pipe body include: horizontal setting, upward inclination setting, or downward inclination setting; the inclination angle of the main air duct inlet assembly is set to be adapted to the angle of the open end of the movable pipe.

[0039] An energy-saving docking device for the mobile dust removal pipeline of the hot repair vehicle of the ladle, which is provided by the present application. By setting a telescopic pipeline assembly and a first inflatable sealing ring, when performing dust removal operations, the mobile device drives to the corresponding interface position; at the interface position, the moving pipeline assembly and the telescopic pipeline assembly are aligned with the axis of the fixed pipeline interface; the telescopic pipeline assembly and the moving pipeline assembly move relative to each other and are inserted into the inlet pipeline of the main air duct. Then, the first inflatable sealing ring seals the space between the inlet pipeline of the main air duct and the telescopic pipeline assembly, ensuring that a sealed docking can be achieved between the main air duct and the on-board pipeline interface of the mobile device, preventing external air from being inhaled, preventing dust leakage, improving the dust removal efficiency, and reducing the energy consumption rate. The diameter of the docking end port of the telescopic pipeline assembly is designed to be smaller than the diameter of the interface end of the inlet pipeline of the main air duct. Even if the central axes of the two are offset, the docking end port of the telescopic pipeline assembly can be inserted into the inner cavity of the interface end of the inlet pipeline of the main air duct, effectively improving the docking success rate of the two. At the same time, a second inflatable sealing ring is also provided in the present application to perform soft sealing on the tube section where the telescopic pipeline assembly and the moving pipeline assembly move relative to each other, further improving the dust removal efficiency and reducing the energy consumption. In the present application, a double-sealing structure is formed by the first inflatable sealing ring and the first inflatable sealing ring, so that the interfaces between the mobile device and the fixed air duct, between the inner pipe structure and the telescopic pipeline assembly, and the entrances of the annular gaps are all sealed, eliminating the soot and dust escape links in the whole process and achieving the maximum environmental protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic structural diagram of the main air duct in the prior art;

[0041] Figure 2 is the docking method of the dust removal pipeline of the mobile device in the prior art;

[0042] Figure 3 is a schematic diagram of the overall structure of the energy-saving docking device for the mobile dust removal pipeline of the ladle in the present application;

[0043] Figure 4 is a schematic diagram of the structure of the main air duct inlet assembly in the present application;

[0044] Figure 5 is a schematic diagram of the structure of the moving pipeline assembly in the present application;

[0045] Figure 6 is a schematic diagram of the positional relationship between the telescopic pipeline assembly and the moving pipeline assembly;

[0046] Figure 7 is for Figure 6 the left view structural schematic diagram;

[0047] Figure 8 is a schematic diagram of the structure of the inflatable sealing ring;

[0048] Figure 9 Schematic diagram of the docking process. DETAILED DESCRIPTION

[0049] like Figures 3 to 8 As shown, the present application includes an energy-saving docking device for a mobile dust removal pipeline of a hot repair car for a steel tank, which includes: a main air duct inlet assembly 100, a telescopic pipe assembly 200 and a mobile pipe assembly 300. The fixed main air duct in the present application can be a single-machine docking pipeline or a dust collection pipeline for centralized processing at multiple stations. When the mobile equipment is parked at a preset station, it is docked according to the main air duct inlet assembly 100 corresponding to the system allocation. Therefore, in the present application, the docking structure of the mobile equipment is set to be a telescopic structure including: a telescopic pipe assembly 200 and a mobile pipe assembly 300; during the driving process, the telescopic pipe assembly 200 is retracted in the mobile pipe assembly 300, and when the docking is stopped, the telescopic pipe assembly 200 extends from the mobile pipe assembly 300 to achieve docking. The telescopic pipe assembly 200 moves linearly relative to the mobile pipe assembly 300 in a direction perpendicular to the moving direction of the mobile equipment, and the gap generated ensures the safety of the track driving of the equipment, and avoids the interference of the docking structure with other equipment during the driving of the mobile equipment due to excessive length, resulting in equipment damage.

[0050] The main air duct inlet assembly 100 is installed on the fixed main air duct 1 in a vertically fixed manner; the telescopic duct assembly 200 and the mobile duct assembly 300 are installed on the mobile equipment (not marked in the figure), and move with the mobile equipment to transport dust and smoke in the workplace environment. In specific implementation, the structural axis of the docking end of the telescopic duct assembly 200 is theoretically coaxial with the axis of the main air duct inlet duct at the parking position. The mobile duct assembly 300 is connected to the smoke and dust collection device (not marked in the figure) of the track-moving mobile equipment.

[0051] The telescopic duct assembly 200 is installed in the mobile duct assembly 300. The telescopic duct assembly 200 is coaxial with the horizontal part of the mobile duct assembly 300 and the inner cavities are interconnected. The telescopic duct assembly 200 realizes the linear movement of inserting into or withdrawing from the main air duct inlet duct by relative movement with the mobile duct assembly 300. In the present application, the port diameter of the butt end of the telescopic duct assembly 200 is set to be smaller than the interface end diameter of the main air duct inlet duct, ensuring that even if the axis of the telescopic duct assembly 200 and the axis of the main air duct inlet duct are slightly different, it can be inserted into the main air duct inlet duct.

[0052] like Figure 4As shown in the figure, the main air duct inlet assembly 100 includes: a branch switch valve 110, an inlet connecting pipe 120, a first inflatable sealing ring 130, and an inlet straight pipe 140. One end of the inlet straight pipe is connected to the inlet of the main air duct branch 11, and the other end is connected to the inlet connecting pipe 120; the inlet straight pipe 140 and the inlet connecting pipe 120 form the main air duct inlet pipe, which is connected to the main air duct branch 11 based on the flange connection method.

[0053] The main air duct inlet pipe is installed at the inlet of the main air duct branch 11 in a manner that its axis is perpendicular to the axis of the main air duct; the first inflatable sealing ring 130 is installed inside the main air duct inlet pipe. After the telescopic pipe assembly 200 is inserted into the main air duct inlet assembly 100, the first inflatable sealing ring 130 seals the interface by inflation.

[0054] The branch switch valve 110 is arranged in the inner cavity of the main air duct inlet pipe. Specifically, it is installed at one end of the inner cavity of the inlet straight pipe 140 adjacent to the inlet connecting pipe, and opens or closes the inlet of the main air duct branch where it is located through the branch switch valve 110; the inside of the fixed main air duct 1 maintains a negative pressure state for a long time based on a negative pressure fan. Once the valve of the branch switch valve 110 is opened, the inlet of the main air duct branch where it is located is opened, and a negative pressure state will be formed at the end of the inlet connecting pipe 120, entering the working state. When the inlet of the main air duct branch where it is located is in a non-working state, the branch switch valve 110 closes to seal the branch inlet. The branch switch valve 110 is realized based on existing valve technologies, such as a louver valve or other forms of valves. The branch switch valve 110 is used for branch opening / closing control to ensure the energy-saving effect of the system.

[0055] The setting angles of the open end of the movable pipe body 310 include: horizontal setting, upward or downward with an angle to the horizontal plane; the inclination angle of the main air duct inlet assembly is adapted to the angle of the open end of the movable pipe. The technical solution of this application is applicable to the docking of main air duct inlet assemblies with different angle settings. In this embodiment, the main air duct inlet assembly is horizontally set, and similarly, the telescopic pipe assembly 200 and the movable pipe assembly 300 are also horizontally set. As Figure 5 shown, the rear part of the movable pipe body 310 is sequentially connected to a rear end bending transition structure and a vertical cylinder structure. Specifically, during implementation, the rear part structure of the movable pipe body 310 is realized based on the pipe structure in the dust collection system of existing equipment.

[0056] In this application, the entire docking and dust collection process is controlled by an electric control system. In the electric control system, the opening / closing state of the branch switch valve 110 is interlocked and sequentially controlled by the position state of the movable pipe assembly and the insertion state of the telescopic pipe assembly. When the branch is not enabled, the branch switch valve 110 is in the closed state; when the axis of the movable pipe assembly on the mobile device is aligned with the axis of the main air duct inlet assembly and the telescopic pipe assembly is inserted into the inlet connecting pipe 120, the branch switch valve 110 opens and the suction channel is opened.

[0057] The inlet connection pipe 120 is a pipe fitting with flanges at both ends and a combined structure of a truncated cone cylinder and a straight cylinder in the middle. Specifically, the inlet connection pipe 120 includes: a first straight cylinder section 121, a cone cylinder section 122, and a second straight cylinder section 123 that are coaxially arranged in sequence and have interconnected inner cavities. One end of the first straight cylinder section 121 is connected to the inlet straight pipe 140, and the other end is connected to the smaller end of the cone cylinder section 122. The larger end of the cone cylinder section 122 is connected to the second straight cylinder section 123; the inlet connection pipe 120 is arranged on the side of the branch switch valve 110 away from the main air duct; the first inflatable sealing ring 130 is installed in the inner cavity of the second straight cylinder section 123. The inlet connection pipe 120 is installed after the position of the branch switch valve 110 and is used to accommodate the sealing ring and the telescopic pipe assembly. The flange at the conical end of the inlet connection pipe 120 is connected to the branch switch valve 110 implemented based on the louver valve.

[0058] The first inflatable sealing ring 130 and the second inflatable sealing ring 340 in this application are both implemented based on inflatable sealing rings with the same structure. As Figure 8 shown, taking the first inflatable sealing ring 130 as an example to illustrate the structure of the inflatable sealing ring in this application. The inflatable sealing ring is an annular structural functional element with a circular cross-section of multi-layer composite material, which includes: an inlet pipe 131, an inflatable ring pipe 133, and a wear-resistant ring pipe 132. The inflatable ring pipe 133 is made of high-temperature resistant rubber and plastic material and has airtight performance; the wear-resistant ring pipe 132 is made of dip-coated woven material with a certain tensile mechanical strength and wear resistance. The inflatable ring pipe 133 is connected to the inlet pipe, and the wear-resistant ring pipe 132 is wrapped outside the inflatable ring pipe 133. The first inflatable sealing ring 130 is installed in the inner cavity of the second straight cylinder section 123 and is used to seal the telescopic pipe.

[0059] The first inflatable sealing ring 130 is controlled for inflation / deflation through the inlet pipe 131, and the cross-sectional shape of the sealing ring can be changed; when the inside of the inflatable ring pipe 133 is inflated, the cross-section of the sealing ring expands into a circle, and the surface contacts the surface of the telescopic pipe inserted into the inlet connection pipe 120 to achieve the sealing function; when the inside of the inflatable ring pipe 133 is deflated, the cross-section of the sealing ring shrinks / deflates to facilitate the interference-free insertion or withdrawal of the telescopic pipe into / from the inner cavity of the inlet connection pipe 120. The inflation / deflation of the first inflatable sealing ring 130 is supplied by a compressed air system and is controlled according to the interlock conditions in the electric control system.

[0060] As Figure 5 shown, the movable pipe assembly 300 includes: a movable pipe body 310, an inner pipe structure 320, a support groove structure 330, and a second inflatable sealing ring 340. Specifically, when implemented, the movable pipe body 310 is welded and connected to the inner pipe structure 320 and the support groove structure 330 to form an integral body. The movable pipe assembly 300 is installed on the mobile device and changes with its position relative to the fixed main air duct, but its position relative to the mobile device remains unchanged.

[0061] The moving duct body 310 has a cylindrical structure. One end of the moving duct body is an open end facing the fixed main air duct 1, and the other end is connected to the original dust and fume collection device of the mobile equipment, and the collected dust and fume are concentrated and sent into the fixed main air duct 1.

[0062] One end of the inner pipe structure 320 extends out of the open end of the moving duct body 310, and the other end is arranged in the inner cavity of the open end of the moving duct body 310 and is hermetically connected to the inner cavity of the moving duct body 310; a ring-shaped gap 324 with one end open is formed between the outer wall of the inner pipe structure 320 and the inner cavity of the moving duct body 310; the telescopic duct assembly 210 is sleeved on the outer periphery of the inner pipe structure, and the ring-shaped gap can accommodate the cylindrical structure part of the telescopic duct 210 to make an axial displacement matching the telescopic amount therein, that is, to realize the telescopic movement of the telescopic duct assembly 200.

[0063] The support groove structure 330 is used to accommodate and support the second inflatable seal ring 340. The support groove structure 330 is an annular groove, concentric with the moving duct body, arranged outside the entrance of the ring-shaped gap 324, and located on the outer periphery of the end of the inner pipe structure extending out of the moving duct body. Specifically, during installation, the support groove structure 330 can be installed on the outer wall of the open end of the moving duct body 310. The support groove structure 330 opens towards the outer wall of the inner pipe structure 320, the opening of the groove body is located at the entrance of the ring-shaped gap 324, and the depth of the groove body is less than or equal to the diameter of the second inflatable seal ring 340; the second inflatable seal ring 340 is installed in the inner cavity of the support groove structure 330. When the second inflatable seal ring 340 is inflated, the inner pipe structure is pressed against the outer periphery of the telescopic duct assembly, so that the two are sealed; at the same time, the opening of the ring-shaped gap is also sealed, so that the inner cavity of the ring-shaped gap forms a static pressure chamber.

[0064] Through the setting of the second inflatable seal ring 340, it is possible to prevent the dust-containing air flow from overflowing between the ring-shaped gap 324, the inner pipe structure 320 and the telescopic duct assembly 200, and it is also possible to prevent dust from accumulating in the ring-shaped gap 324 and affecting the telescopic movement of the telescopic duct 210 in the ring-shaped gap. It is also possible to prevent the outside air from being sucked into the inner cavity of the moving duct body 310, effectively reducing the energy consumption.

[0065] The specific structure of the second inflatable sealing ring 340 is the same as that of the first inflatable sealing ring 130. Through the air inlet pipe, the inflation / deflation control can change the cross-sectional shape of the sealing ring. When the pipe is inflated, the cross-section of the sealing ring expands into a circle, and the surface of the second inflatable sealing ring 340 contacts the surface of the moving pipe body 310 to achieve the sealing function. When the pipe is deflated, the cross-section of the sealing ring shrinks / deflates, so that the telescopic pipe can be inserted into or withdrawn from the inlet nozzle 120 without interference. The inflation / deflation of the second inflatable sealing ring 340 is controlled by the compressed air system according to the interlock conditions. The double sealing of the first inflatable sealing ring 130 and the second inflatable sealing ring 340 seals the interfaces between the moving equipment and the fixed air duct, and the annular gaps at the relative displacements between the moving pipe and the telescopic pipe provided for the docking function of the moving equipment itself, eliminating the escape of smoke and dust in the whole process.

[0066] The moving pipe assembly 300 further includes a telescopic drive cylinder assembly 360; the telescopic drive cylinder assembly 360 is arranged on the outer wall of the moving pipe body 310, the output end of the cylinder is parallel to the moving pipe body 310 and points to the open end of the moving pipe body 310, and the output end of the cylinder is connected to the telescopic pipe assembly 200.

[0067] The inner pipe structure 320 includes: an outward expansion part 321, a straight cylinder part 322, and a contraction part 323. Both the contraction part 323 and the outward expansion part 321 are truncated cone cylinder structures; the smaller end of the contraction part 323 is arranged towards the open end of the moving pipe body 310 and extends out of the open end of the moving pipe body 310. The larger end of the contraction part 323 is connected to one end of the straight cylinder part 322, the other end of the straight cylinder part 322 is connected to the smaller end of the outward expansion part 321, and the edge of the truncated cone cylinder at the larger end of the outward expansion part 321 is annularly and hermetically welded to the inner wall of the cylindrical structure of the moving pipe body 310. The outward expansion part 321 and the straight cylinder part 322 of the inner pipe structure 320 together with the inner cavity of the moving pipe body 310 form an annular gap 324 with one end open.

[0068] In this application, the annular gap 324 is formed by the outward expansion part 321 and the straight cylinder part 322 of the truncated cone cylinder structure, rather than directly welding the straight cylinder part 322 to the inner cavity of the moving pipe body 310. Because during the process of sending the airflow mixed with smoke and dust through the inner cavity of the moving pipe body 310 into the telescopic pipe 210 after docking, the joint part between the inner pipe structure 320 and the inner cavity of the moving pipe body 310 will be scoured. Based on the joint part in the shape of a flared mouth formed by the outward expansion part 321 and the annular gap 324 structure, this application can not only effectively guide the dust-containing airflow, reduce the damage probability of the joint part, but also effectively guarantee the sealing structure and effectively extend the service life of the equipment.

[0069] Such as Figure 6 and Figure 7As shown, the telescopic pipe assembly 200 includes: a telescopic pipe 210 and a traction flange 220; the telescopic pipe assembly 200 is installed in the mobile pipe assembly 300, and realizes the insertion / detachment function with the inlet pipe 120 through the change of the telescopic position, and cooperates with the inlet pipe assembly and the mobile pipe assembly to realize the mobile interface sealing function.

[0070] The traction flange 220 is disposed on one end of the telescopic pipe 210 away from the telescopic driving cylinder assembly 360 , and is connected to the output end of the telescopic driving cylinder assembly 360 .

[0071] The telescopic pipe 210 includes: three straight guide sections and two tapered guide sections. The three straight guide sections are arranged in sequence and their diameters gradually increase. The diameter of the largest straight guide section is adapted to the diameter of the cavity of the annular gap 324 of the movable pipe assembly 300. A tapered guide section is arranged between every two adjacent straight guide sections. The straight guide section with the largest diameter is movably inserted in the annular gap 324 and can make linear motion in the annular gap 324.

[0072] The installation order of several guide sections in the telescopic pipe 210 is: the first straight guide section 211, the first tapered guide section 212, the second straight guide section 213, the second tapered guide section 214, and the third straight guide section 215. The rear end of the telescopic pipe 210 is designed as a straight structure based on the third straight guide section 215, which is convenient for inserting into the annular gap of the double-layer structure of the mobile pipe, so as to facilitate the organization of the airflow structure and avoid the dust-containing airflow in the mobile pipe from scouring the sealing ring of the telescopic pipe and the mobile pipe.

[0073] The first straight guide section 211 with the smallest diameter ensures that the telescopic pipe 210 can be smoothly inserted into the inner cavity of the inlet pipe 120 during docking, and the third straight guide section 215 with the largest diameter ensures that the telescopic pipe 210 can smoothly enter and exit the annular gap 324 to achieve telescopic movement; the first conical guide section 212 and the second conical guide section 214 ensure that the three straight guide sections with different diameters are connected together, and the telescopic pipe 210 is set to a shape with one end narrow and the other end wide; the airflow mixed with smoke and dust sucked out of the mobile pipe body 310 by negative pressure is sent from the wider third straight guide section 215 of the telescopic pipe 210 to the main air duct inlet assembly 100 through the first straight guide section 211 with the smallest diameter. Due to the narrow tube effect, the air flow rate will increase, which effectively avoids dust accumulation at the docking position, and can also avoid smoke and dust from flowing back into the annular gap 324, thereby reducing the probability of smoke and dust entering the annular gap 324.

[0074] The contraction portion 323 of the inner tube structure 320 is arranged in parallel with the second conical guide section 214, the length of the straight tube portion 322 is greater than or equal to the length of the third straight tube guide section 215, and the third straight tube guide section 215 is sleeved on the outer periphery of the straight tube portion 322.Figure 9 As shown in state (1) in Figure 9 , when the telescopic duct 210 contracts back into the annular gap 324, the second tapered guide section 214 can be parallel and fitted to the contraction section 323, and the third straight guide section 215 can be fully contracted into the annular gap 324, ensuring that when the mobile device is operating in the non-working state, the telescopic duct 210 in the contracted state can maintain stability with the mobile duct assembly 300, avoiding the structure of the annular gap 324 being damaged by the bumps during the operation of the mobile device and extending the service life of the device.

[0075] The telescopic duct 210 is coaxial with the horizontal part of the mobile duct and can move relative to it. The telescopic duct 210 is moved and inserted into the main air duct inlet connection pipe 120. The front end is sealed by the first inflatable seal ring 130 at the interface of the inlet connection pipe 120, and the rear end is sealed by the second inflatable seal ring 340 at the part between the telescopic duct and the mobile duct.

[0076] In this application, the shape of the inlet connection pipe 120 is designed as: a first straight section 121, a tapered section 122, and a second straight section 123 connected in sequence; at the same time, several guide sections in the telescopic duct 210 are designed as: a first straight guide section 211, a first tapered guide section 212, a second straight guide section 213, a second tapered guide section 214, and a third straight guide section 215.

[0077] In specific implementation, the inner cavity diameter of the second straight section 123 with the largest diameter is greater than the outer diameter of the second straight guide section 213 in the telescopic duct 210, ensuring that there is enough space in the inner cavity of the second straight section 123 to install the first inflatable seal ring 130. When sealing between the inlet connection pipe 120 and the telescopic duct 210, based on the first inflatable seal ring 130 achieving sealing when the positions of the two straight sections, the second straight section 123 and the second straight guide section 213, coincide, ensuring better sealing effect.

[0078] Similarly, when sealing between the telescopic duct 210 and the inner pipe structure 320, the second inflatable seal ring 340 achieves sealing when the positions of the two straight sections, the third straight guide section 215 and the straight section 322, coincide, ensuring better sealing effect.

[0079] As Figure 3 shown, in this application, the first inflatable seal ring 130 and the second inflatable seal ring 340 are used to seal the intersection parts of three structures: the inlet connection pipe 120, the telescopic duct 210, and the inner pipe structure 320 respectively, ensuring the sealed docking between the fixed main air duct and the on-board pipe interface of the mobile device.

[0080] The mobile duct assembly 300 further includes a guiding structure; the guiding structure includes: a guiding hole structure 350 and a guiding rod 230.

[0081] The guiding hole structure 350 is provided on the moving pipeline body 310, such as on the outer wall of the moving pipeline body 310 and the outer wall of the support groove structure. The specific installation position is adaptively set according to the actual structure of the equipment. The guiding rod 230 is arranged parallel to the central axes of the moving pipeline body 310 and the telescopic pipeline; one end of the guiding rod 230 is installed on the outer wall of the telescopic pipeline through the fixing structure of the guiding rod 230, and the other end of the guiding rod 230 is movably inserted into the pore passage of the guiding hole structure 350.

[0082] As Figure 7 shown, in this embodiment, there are 3 connection structures 221 with the cylinder fork and 3 fixing structures 231 of the guiding rod evenly distributed on the end traction flange of the telescopic pipeline 210. The connection structures 221 and the fixing structures 231 of the guiding rod are respectively distributed at an angle of 120°. One end of the guiding rod is fixed on the traction flange based on the fixing structure 231 of the guiding rod, and the other end is inserted into the inner cavity of the pore of the guiding hole structure 350. The guiding rod 230 is parallel to the axis of the telescopic pipeline body. At the same time, the aperture of the guiding hole structure 350 is larger than the diameter of the guiding rod 230. When the telescopic pipeline 210 is inserted into the inlet nozzle 120 and if there is a slight adjustment of the axis, the guiding rod can still work properly.

[0083] In order to ensure that the axis can be slightly adjusted during the process of inserting the telescopic pipeline 210 into the inlet nozzle 120, in this application, the cylinder output end of the telescopic driving cylinder assembly is connected to the telescopic pipeline 210 in an articulated manner, and the articulated shaft 361 is perpendicular to the axis of the telescopic pipeline 210.

[0084] Matched with the fixing structure 231 of the guiding rod, the guiding hole structure 350 is distributed at 120 0 for supporting the guiding rod 230. In this application, 3 groups of guiding structures are provided. The three guiding rods 230 are evenly arranged on the circumferential direction of the telescopic pipeline 210. Through the cooperation of the guiding rod 230 and the guiding hole structure 350, it is ensured that the axis of the telescopic pipeline 210 coincides with the axis of the inner pipe structure 320, so that the telescopic pipeline 210 will not shift during the movement in the annular gap 324, ensuring that the telescopic movement can be carried out smoothly and avoiding the problem of damage to the equipment caused by the collision between the telescopic pipeline 210 and the inner pipe structure 320 or the moving pipeline body 310 during the telescopic movement, and prolonging the service life of the equipment.

[0085] As Figure 9 shown, the moving pipeline interface of the mobile device finds the inlet pipeline on the main air duct allocated by the system and docks with the inlet pipeline on the main air duct. After the following technological processes are carried out in sequence, the main air duct sucks the dust and soot generated during the stationary operation of the mobile device:

[0086] 1) Status: The shutter valve is closed, the moving pipeline is aligned, the telescopic pipeline is not inserted, and the seal ring is deflated;

[0087] The shutter valve is closed, the movable duct assembly 300 is aligned with the axis of the inlet duct on the main air duct, the telescopic duct is not inserted into the inlet duct on the main air duct, and the two sealing rings are in a deflated state;

[0088] 2) State: The shutter valve is closed, the movable duct is aligned, the telescopic duct is inserted, and the sealing ring is deflated;

[0089] When the shutter valve is in the closed state, after the movable duct assembly 300 is aligned with the axis of the inlet nozzle 120, the telescopic drive cylinder assembly 360 is started, and the output end of the cylinder drives the telescopic duct 210 to move towards the inlet nozzle 120 until the telescopic duct 210 is inserted into the inlet duct on the main air duct. At this time, the two sealing rings are in a deflated state;

[0090] 3) State: The shutter valve is closed, the movable duct is aligned, the telescopic duct is inserted, and the sealing ring is inflated;

[0091] The shutter valve is closed. After the axis of the movable duct is aligned with the axis of the inlet duct of the main air duct and the telescopic duct is inserted into the inlet duct on the main air duct, the two sealing rings are activated until the inflation is completed to seal the pipe interface;

[0092] 4) State: The shutter valve is open, the movable duct is aligned, the telescopic duct is inserted, and the sealing ring is inflated;

[0093] At this time, the movable duct is aligned with the axis of the inlet duct of the main air duct, the telescopic duct is inserted into the inlet duct on the main air duct, and after the two sealing rings are in the inflated state, the shutter valve is opened. After the shutter valve enters the open state, the interface between the inlet nozzle 120 and the telescopic duct 210 enters a negative pressure state.

[0094] After the shutter valve is opened in state 4), the fixed main air duct sucks the dust and soot generated during the stationary operation of the mobile device. When the stationary operation of the rail-mounted mobile device ends and a signal is sent to the electronic control system, the electronic control system closes the shutter valve, then releases the sealing state of the two sealing rings. After the sealing state is released, the telescopic drive cylinder assembly 360 is started in the reverse direction to withdraw the telescopic duct 210 from the inlet nozzle 120. The third straight cylinder diversion section 215 in the telescopic duct 210 retracts into the annular gap 324. After the telescopic duct 210 returns to the default position, the mobile device is disengaged from the inlet duct on the main air duct to complete. In specific applications, the compressed air system and the electronic control system in this application are both implemented based on the prior art.

[0095] The dust removal pipeline interface device of the mobile equipment of the present invention can adapt to the working conditions requirements of single machines and multi-station scenarios, and can also adapt to the working conditions requirements of multiple machines and multi-station scenarios on the same track when conditions are met. When the mobile equipment traveling on the track executes the process task and reaches the set stop point, the interface position of the fixed main air duct corresponds to it. At the interface position, the movable pipeline assembly and the telescopic pipeline assembly are aligned with the axis of the fixed pipeline interface; in the telescopic pipeline assembly, the telescopic pipeline is inserted into the inlet pipeline of the main air duct under the drive of the cylinder, and then the interface is sealed by the inflatable sealing ring. After using the technical solution of the present application, due to the sealing of the interface gap of the traditional docking device between the mobile equipment and the fixed air duct and the pipeline gap of the relative displacement of the docking pipeline of the mobile equipment itself, the smoke and dust escape links in the whole process are eliminated, the dust removal efficiency is improved, and at the same time the waste of energy is eliminated. With the same dust removal effect, a low-air-volume fan can be configured, the diameter of the main air duct can be reduced, and the investment and operation costs can be reduced. It can be widely used in the docking process of the pipeline of the dust collection system on the track mobile equipment and the fixed pipeline for dust removal treatment in industries such as iron and steel metallurgy, mines, and cement.

Claims

1. An energy-saving docking device for a mobile dust removal pipeline of a hot repair vehicle for a molten steel tank, characterized in that: It includes: a main air duct inlet assembly, a telescopic duct assembly and a movable duct assembly; The main air duct inlet assembly is installed on the fixed main air duct; the telescopic pipe assembly and the mobile pipe assembly are installed on the mobile equipment and move with the mobile equipment; the mobile pipe assembly is connected to the dust storage mechanism of the mobile equipment; The main air duct inlet assembly comprises: a main air duct inlet pipe and a first inflatable sealing ring, wherein the main air duct inlet pipe is installed at the main air duct branch inlet in a manner that the axis is perpendicular to the axis of the main air duct; The port diameter of the butt end of the telescopic pipe assembly is smaller than the interface end diameter of the main air duct inlet pipe; The telescopic pipe assembly is installed in the mobile pipe assembly, the telescopic pipe assembly is coaxial with the horizontal part of the mobile pipe assembly and the inner cavities are interconnected, and the telescopic pipe assembly realizes the linear movement of inserting into or withdrawing from the main air duct inlet pipe by relative movement with the mobile pipe assembly; The first inflatable sealing ring is installed in the main air duct inlet pipe, and when the telescopic pipe assembly is inserted into the main air duct inlet assembly, the first inflatable sealing ring seals the interface by inflating; The mobile pipe assembly comprises: a mobile pipe body, an inner pipe structure, a support groove structure and a second inflatable sealing ring; The mobile duct body is a cylindrical structure, one end of the mobile duct body is an open end facing the main air duct, and the other end is connected to the dust collection system of the mobile equipment; One end of the inner tube structure extends out of the open end of the movable pipe body, and the other end is arranged in the inner cavity of the movable pipe body and is sealed and connected to the inner cavity of the movable pipe body, so that an annular gap with one end open is formed between the outer wall of the inner tube structure and the inner cavity of the movable pipe; the telescopic pipe assembly is sleeved on the outer periphery of the inner tube structure, and realizes the contraction movement based on the annular gap; The support groove structure is an annular groove; the support groove is cocentric with the movable pipe body, is arranged outside the entrance of the annular gap, and is located at the outer periphery of one end of the inner pipe structure extending out of the movable pipe body; the support groove structure opens toward one side of the inner pipe structure, and the second inflatable sealing ring is installed in the inner cavity of the support groove structure; After the second inflatable sealing ring is inflated, the inner tube structure is pressed against the outer periphery of the telescopic pipe assembly to seal the inner tube structure and the inner tube structure is sealed to seal the inner tube structure and the inner tube structure is sealed to form a static pressure chamber. The inner tube structure includes: a contraction portion, a straight tube portion and an outward expansion portion, wherein the contraction portion and the outward expansion portion are both truncated cone tube structures; the narrower end of the contraction portion is arranged toward the opening end of the movable pipe body and extends out of the opening end of the movable pipe body, the wider end of the contraction portion is connected to one end of the straight tube portion, and the other end of the straight tube portion is connected to the narrower end of the outward expansion portion, the diameter of the wider end of the outward expansion portion is adapted to the inner cavity diameter of the movable pipe body, and the outer wall of the wider end of the outward expansion portion is closed and connected to the inner cavity of the movable pipe body to form the annular gap.

2. According to claim 1, an energy-saving docking device for a mobile dust removal pipeline of a hot repair vehicle for a molten steel tank, characterized in that: The mobile pipeline assembly also includes: a telescopic drive cylinder assembly; The telescopic driving cylinder assembly is arranged on the outer wall of the mobile pipe body, and the cylinder output end is parallel to the axis of the mobile pipe body and points to the opening end of the mobile pipe body; the cylinder output end of the telescopic driving cylinder assembly is connected to the telescopic pipe assembly based on a hinged manner, and the hinge axis is perpendicular to the cylinder output end.

3. According to claim 1, an energy-saving docking device for a mobile dust removal pipeline of a hot repair vehicle for a molten steel tank, characterized in that: The telescopic pipe assembly comprises: a telescopic pipe and a traction flange; The traction flange is arranged on the telescopic pipe and connected to the telescopic driving structure; The telescopic pipeline comprises: three straight flow guide sections and two conical flow guide sections; The three straight guide sections are arranged in sequence and their diameters gradually increase. The diameter of the largest straight guide section is adapted to the diameter of the annular gap cavity of the movable pipe assembly. One conical guide section is arranged between every two adjacent straight guide sections. The straight guide section with the largest diameter is movably inserted in the annular gap for linear motion.

4. According to claim 3, an energy-saving docking device for a mobile dust removal pipeline of a hot repair vehicle for a molten steel tank, characterized in that: The mobile pipeline assembly further includes: a guide structure; The guide structure comprises: a guide hole structure and a guide rod; the guide hole structure is arranged on the movable pipe body; The guide rod is arranged parallel to the central axis of the movable pipe body and the telescopic pipe; one end of the guide rod is installed on the outer wall of the telescopic pipe through a guide rod fixing structure, and the other end of the guide rod is movably inserted into the channel of the guide hole structure.

5. According to claim 1, an energy-saving docking device for a mobile dust removal pipeline of a hot repair vehicle for a molten steel tank, characterized in that: The main air duct inlet pipeline includes: an inlet straight pipe and an inlet connecting pipe; One end of the inlet straight pipe is connected to the main air duct branch inlet, and the other end is connected to the inlet connecting pipe; The inlet connecting pipe comprises: a first straight cylinder section, a conical cylinder section and a second straight cylinder section which are coaxially arranged in sequence and have interconnected inner cavities, one end of the first straight cylinder section is connected to the inlet straight pipe, and the other end is connected to the narrower end of the conical cylinder section, and the wider end of the conical cylinder section is connected to the second straight cylinder section; the first inflatable sealing ring is installed in the inner cavity of the second straight cylinder section.

6. According to claim 5, an energy-saving docking device for a mobile dust removal pipeline of a hot repair vehicle for a molten steel tank, characterized in that: The main air duct inlet assembly also includes: a branch switch valve; The branch switch valve is arranged in the inner cavity of the inlet straight pipe adjacent to the inlet connecting pipe; the branch switch valve is opened or closed by the inlet of the main air duct branch where it is located.

7. According to claim 1, an energy-saving docking device for a mobile dust removal pipeline of a hot repair vehicle for a molten steel tank, characterized in that: The first inflatable sealing ring and the second inflatable sealing ring have the same structure; The structure of the inflatable sealing ring includes: an air intake pipe, an inflatable ring tube and a wear-resistant ring tube. The inflatable ring tube is made of high-temperature resistant rubber and plastic material, and the wear-resistant ring tube is made of plastic-dip treated woven material. The inflatable ring tube is connected to the air intake pipe, and the wear-resistant ring tube is wrapped outside the inflatable ring tube.

8. The energy-saving docking device for the mobile dust removal pipeline of the hot repair machine of the molten steel tank according to claim 1 is characterized by: The setting angle of the opening end of the movable duct body includes: horizontal setting, upward tilting setting or downward tilting setting; the tilting angle of the main air duct inlet component is set to adapt to the angle of the opening end of the movable duct.

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