Energy-saving butt joint device for movable dust removal pipeline of molten steel tank hot repair vehicle

Abstract

The invention provides an energy-saving butt joint device for a movable dust removal pipeline of a molten steel tank hot repair vehicle, which can realize sealed butt joint between a main air duct and an onboard pipeline interface of movable equipment, improve the dust removal efficiency and reduce the energy waste rate. By arranging the telescopic pipeline assembly capable of stretching out and drawing back and the first inflation sealing ring, when dust removal operation is executed, the mobile equipment is driven to the position of the corresponding connector; the movable pipeline assembly and the telescopic pipeline assembly are aligned with the joint axis of the fixed pipeline at the joint position; the telescopic pipeline assembly and the movable pipeline assembly move relatively and are inserted into the main air duct inlet pipeline, and then the first inflation sealing ring is used for sealing the position between the main air duct inlet pipeline and the telescopic pipeline assembly. The diameter of the port of the butt joint end of the telescopic pipeline assembly is designed to be smaller than that of the connector end of the main air duct inlet pipeline, and even if the central axes of the telescopic pipeline assembly and the main air duct inlet pipeline deviate, the port of the butt joint end of the telescopic pipeline assembly can be inserted into the inner cavity of the connector end of the main air duct inlet pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection, dust removal and energy saving, and in particular to an energy-saving docking device for a mobile dust removal pipeline of a hot repair car for a molten steel tank. Background Art

[0002] In the iron and steel metallurgy, mining, cement and other industries, most of the mobile equipment such as unloaders, hot repair cars for molten steel tanks, slag treatment equipment, etc., which work in a single-machine, multi-station, rail-based mode, are in working environments that are prone to dust and smoke. In order to meet the requirements of environmental dust removal, mobile equipment is usually equipped with an on-board dust collection system; a fixed dust collection main air duct for centralized treatment is laid along the track beside multiple work points; the on-board dust collection system usually includes smoke and dust capture devices and conveying pipelines. When the mobile equipment is stationary, the dust collection system installed on the mobile equipment cooperates with the fixed dust collection main air duct, relying on the negative pressure of the fixed dust collection main air duct to achieve the dust and smoke removal needs of a single machine or multiple stations.

[0003] The dust collection system installed on the mobile equipment is equipped with functional units such as dust collection hoods and onboard pipes; the onboard pipes have a docking structure with the main air duct of the dust collection main pipe. Valves and docking ports corresponding to multiple stations are set on the fixed dust collection main air duct. When the mobile equipment stops working at an operating point, the docking structure of the onboard pipe is aligned with the axis of the docking 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 smoke generated at the operating point are sucked into the fixed dust collection main air duct through the onboard dust collection system pipe, and then transported to the centralized dust removal treatment device at the end point.

[0004] like Figure 1 and Figure 2 The figure is a schematic diagram of the structure of a fixed dust collecting main air duct for receiving dust in a centralized dust removal device in the prior art. On the main air duct 1, multiple inlet duct structures 2 for receiving dust are arranged according to the work station. When the mobile equipment equipped with a dust collection system stops at the work station, the dust collection system is connected to the main air duct 1 through the on-board duct interface 3. According to the nature of the work, there is actually a demand for no less than two work stations, Figure 1 In the embodiment, only two workstations A and B are captured. The parking position number of the mobile equipment traveling on the track and the corresponding workstation number of the main air duct inlet pipe are determined by the factory scheduling system.

[0005] The mobile equipment transports dust and smoke to the main air duct 1 through the interface docking method. The specific steps are as follows: Figure 2As shown, it includes two steps S1 and S2. S1: The mobile equipment travels on the track, and the position is adjusted to align the axis between the on-board pipe interface 3 and the inlet pipe 2 on the main air duct 1 allocated by the system, so as to achieve interface docking; the arrow marked as D in the figure indicates the moving direction of the on-board pipe interface on the track mobile equipment; S2: The dust removal fan at the end of the inlet pipe 2 generates negative pressure, and collects the dust and smoke in the on-board pipe interface 3 to the main air duct 1 by suction for subsequent treatment.

[0006] However, at present, most of the dust removal ducts on rail-mounted mobile equipment and the fixed dust collection main air ducts use end face flanges to implement pipe mouth correspondence at the parking position; the dust removal duct flanges on the mobile equipment and the fixed main air ducts use end face flanges with a gap, which results in huge negative pressure losses and high energy consumption in the main air duct; at the same time, dust / smoke in the workplace is prone to unorganized emissions, and environmental pollution is relatively serious.

[0007] Although the prior art also adopts the plug-in connection form of the dust removal duct on the mobile device and the fixed dust collection main air duct, although the equipment design intention requires that the inlet duct 2 on the fixed main air duct and the on-board duct interface 3 of the mobile device be designed to be axially aligned, the position error at the parking position, structural deformation after long-term use, etc. will cause the axis centerline between the inlet duct 2 on the fixed main air duct and the on-board duct interface 3 to be offset and cannot be accurately aligned. At the same time, under the constraints and restrictions of actual driving conditions, the outer contour of the mobile device traveling on the track must not interfere with the contour of the surrounding facilities and maintain a certain safety distance. Therefore, there is a certain gap at the joint of the on-board duct interface 3 and the inlet duct 2 when actually used. Due to the existence of the gap at the joint of the on-board duct interface 3 of the mobile device and the inlet duct 2 on the fixed main air duct, it is difficult for the negative pressure value of the on-board dust removal point to reach the expected value, which weakens 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 the form of a short circuit, which reduces the dust removal efficiency; in order to make up for the efficiency loss and ensure the dust removal effect, the method of increasing the air volume of the dust removal fan is usually adopted; and the dust removal fan is often a large energy consumer in the enterprise, thus causing a huge waste of energy. Summary of the invention

[0008] In order to solve the problem that when existing mobile dust removal pipes are connected, there is a gap at the connection point, which causes a large amount of air with low dust content to directly enter the main air duct. The present invention provides an energy-saving connection device for the mobile dust removal pipe of a molten steel tank hot repair car, which can achieve sealed connection between the main air duct and the on-board pipe interface of the mobile equipment, thereby improving the dust removal efficiency and reducing the energy waste rate.

[0009] The technical solution of the present invention is as follows: 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 comprises: a main air duct inlet assembly, a telescopic pipeline assembly and a mobile pipeline 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. When the telescopic pipe assembly is inserted into the main air duct inlet assembly, the first inflatable sealing ring seals the interface by inflating.

[0010] It is further characterized by: 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 mobile pipeline assembly also includes: a telescopic drive cylinder assembly; The telescopic drive 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 open end of the mobile pipe body; the cylinder output end of the telescopic drive 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; The inner tube structure comprises: a contraction portion, a straight tube portion and an expansion portion, wherein the contraction portion and the expansion portion are both truncated cone tube structures; the narrower end of the contraction portion is arranged toward the open end of the mobile pipe body and extends out of the open end of the mobile 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 expansion portion, the diameter of the wider end of the expansion portion is adapted to the inner cavity diameter of the mobile pipe body, and the outer wall of the wider end of the expansion portion is sealed and connected to the inner cavity of the mobile pipe body to form the annular gap; 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 mobile pipe assembly. One conical guide section is arranged between each two adjacent straight guide sections. The straight guide section with the largest diameter is movably inserted in the annular gap to perform linear motion. 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 mounted 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 hole of the guide hole structure; 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 pipe comprises: a first straight tube section, a conical tube section and a second straight tube section which are coaxially arranged in sequence and have interconnected inner cavities; one end of the first straight tube section is connected to the inlet straight tube, and the other end is connected to the narrower end of the conical tube section; the wider end of the conical tube section is connected to the second straight tube section; the first inflatable sealing ring is installed in the inner cavity of the second straight tube section; 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 used to open or close the main air duct branch inlet where it is located; 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 pipe and a wear-resistant ring pipe, wherein the inflatable ring pipe is made of high-temperature resistant rubber and plastic material, and the wear-resistant ring pipe is made of a plastic-dipped braided material. The inflatable ring pipe is connected to the air intake pipe, and the wear-resistant ring pipe is wrapped outside the inflatable ring pipe. 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.

[0011] The present application provides an energy-saving docking device for a mobile dust removal pipeline of a hot repair vehicle for a molten steel tank. The device is provided with a retractable telescopic pipeline assembly and a first inflatable sealing ring. When performing dust removal operations, the mobile equipment drives to the corresponding interface position; the mobile pipeline assembly and the telescopic pipeline assembly are aligned with the axis center line of the fixed pipeline interface at the interface position; the telescopic pipeline assembly and the mobile pipeline assembly move relative to each other and are inserted into the main air duct inlet pipeline, and then the first inflatable sealing ring is used to seal the main air duct inlet pipeline and the telescopic pipeline assembly, ensuring that the main air duct and the on-board pipeline interface of the mobile equipment can be sealed and docked, preventing external air from being sucked in, preventing dust from leaking, improving dust removal efficiency, and reducing energy consumption. The docking end port diameter of the telescopic pipeline assembly is designed to be smaller than the interface end diameter of the main air duct inlet pipeline. 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 main air duct inlet pipeline, which can effectively improve the docking success rate of the two. At the same time, the present application also provides a second inflatable sealing ring to perform soft sealing on the tube where the telescopic pipe assembly and the mobile pipe assembly are relatively displaced, further improving the dust removal efficiency and reducing energy consumption. In the present application, the first inflatable sealing ring and the second inflatable sealing ring form a double sealing structure, so that the interface between the mobile device and the fixed air duct, the inner tube structure and the telescopic pipe assembly, and the entrance of the annular gap are all sealed, eliminating the smoke and dust escape link in the whole process, and achieving the maximum environmental protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the main air duct in the prior art; Figure 2 It is a dust removal pipe docking method for mobile equipment in the prior art; Figure 3 This is a schematic diagram of the overall structure of the mobile dust removal pipeline energy-saving docking device for the molten steel tank in this application; Figure 4 This is a schematic diagram of the structure of the main air duct inlet assembly in this application; Figure 5 This is a schematic diagram of the structure of the mobile pipeline assembly in this application; Figure 6 It is a schematic diagram of the positional relationship between the telescopic pipe component and the movable pipe component; Figure 7 for Figure 6 A schematic diagram of the structure of the left view; Figure 8 It is a structural schematic diagram of an inflatable sealing ring; Fig. 9 Schematic diagram of the docking process. DETAILED DESCRIPTION

[0013] like Figure 3~Figure 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.

[0014] 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.

[0015] 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.

[0016] like Figure 4 As shown, 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 constitute the main air duct inlet pipe, which is connected to the main air duct branch 11 based on a flange connection.

[0017] The main air duct inlet pipe is installed at the entrance of the main air duct branch 11 in a way that the axis line is perpendicular to the axis line of the main air duct; the first inflatable sealing ring 130 is installed in the main air duct inlet pipe. When the telescopic pipe assembly 200 is inserted into the main air duct inlet assembly 100, the first inflatable sealing ring 130 seals the interface through inflation.

[0018] The branch switch valve 110 is arranged in the inner cavity of the main air duct inlet pipe, specifically, it is installed in the inner cavity of the inlet straight pipe 140 adjacent to one end of the inlet pipe, and the branch inlet of the main air duct where the branch switch valve 110 is located is opened or closed; the negative pressure state is maintained for a long time inside the fixed main air duct 1 based on the negative pressure fan. Once the valve of the branch switch valve 110 is opened, the main air duct branch inlet where it is located is opened, and the negative pressure state will be entered at the end of the inlet pipe 120, and the working state will be entered. When the main air duct branch inlet where it is located is in a non-working state, the branch switch valve 110 is closed to seal the branch inlet. The branch switch valve 110 is implemented based on existing valve technology, such as a shutter 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.

[0019] The setting angle of the opening end of the mobile duct body 310 includes: horizontal setting, upward or downward setting with an angle with the horizontal plane; the inclination angle of the main air duct inlet assembly is adapted to the angle of the opening end of the mobile duct. The technical solution of the present application is applicable to the docking of main air duct inlet assemblies set at different angles. In this embodiment, the main air duct inlet assembly is horizontally set, and the telescopic duct assembly 200 and the mobile duct assembly 300 are also horizontally set. Figure 5As shown, the rear part of the mobile duct body 310 is connected to the rear end curved transition structure and the vertical cylindrical structure in sequence. In specific implementation, the rear part structure of the mobile duct body 310 is realized based on the duct structure in the dust collection system of the existing equipment.

[0020] 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 mobile pipe assembly and the insertion state of the telescopic pipe assembly. When the branch is not enabled, the branch switch valve 110 is in a closed state; when the axis of the mobile pipe assembly on the mobile equipment is aligned with the axis of the main air duct inlet assembly, and the telescopic pipe assembly is inserted into the inlet pipe 120, the branch switch valve 110 is opened and the suction channel is opened.

[0021] The inlet pipe 120 is a pipe with flanges at both ends and a combination of a truncated cone cylinder and a straight cylinder structure in the middle. Specifically, the inlet pipe 120 includes: a first straight cylinder section 121, a conical cylinder section 122, and a second straight cylinder section 123, which 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 conical cylinder section 122. The larger end of the conical cylinder section 122 is connected to the second straight cylinder section 123; the inlet 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 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 conical tube end flange of the inlet pipe 120 is connected to the branch switch valve 110 based on the shutter valve.

[0022] The first inflatable seal ring 130 and the second inflatable seal ring 340 in the present application are both implemented based on inflatable seal rings of the same structure. Figure 8 As shown, the structure of the inflatable sealing ring in the present application is explained by taking the first inflatable sealing ring 130 as an example. The inflatable sealing ring is a ring-shaped structural functional element with a circular cross-section and a multilayer 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 airtightness; the wear-resistant ring pipe 132 is made of a plastic-dipped braided material with certain tensile mechanical strength and wear resistance. The inflatable ring pipe 133 is connected to the inlet pipe, and the inflatable ring pipe 133 is wrapped with the wear-resistant ring pipe 132. The first inflatable sealing ring 130 is installed in the inner cavity of the second straight tube section 123 to seal the telescopic pipe.

[0023] The first inflatable seal ring 130 is inflated / deflated through the air inlet pipe 131, and the cross-sectional shape of the seal ring can be changed; when the inside of the inflatable ring tube 133 is inflated, the cross-sectional shape of the seal ring expands and rounds, and the surface contacts the surface of the telescopic pipe inserted into the inlet pipe 120 to achieve the sealing function; when the inside of the inflatable ring tube 133 is deflated, the cross-sectional shape of the seal ring shrinks / collapses, so as to be inserted into the telescopic pipe without interference or withdraw from the inner cavity of the inlet pipe 120. The inflation / deflation of the first inflatable seal ring 130 is supplied by the compressed air system and controlled according to the interlocking conditions in the electronic control system.

[0024] like Figure 5 As shown, the mobile duct assembly 300 includes: a mobile duct body 310, an inner tube structure 320, a support groove structure 330 and a second inflatable seal ring 340. In a specific implementation, the mobile duct body 310 is welded and connected with the inner tube structure 320 and the support groove structure 330 to form an integral body. The mobile duct assembly 300 is installed on the mobile equipment and changes with its position relative to the fixed main air duct, but the position relative to the mobile equipment does not change.

[0025] The mobile duct body 310 is a cylindrical structure, one end of which is an open end facing the fixed main air duct 1 , and the other end is connected to the original smoke and dust collection device of the mobile equipment to collect the smoke and dust and send them to the fixed main air duct 1 .

[0026] One end of the inner tube structure 320 extends out of the open end of the mobile pipe body 310, and the other end is arranged in the inner cavity of the open end of the mobile pipe body 310 and is closed and connected with the inner cavity of the mobile pipe body 310; an annular gap 324 with one end open is formed between the outer wall of the inner tube structure 320 and the inner cavity of the mobile pipe body 310; the telescopic pipe assembly 210 is sleeved on the outer periphery of the inner tube structure, and the annular gap can accommodate the cylindrical structure part of the telescopic pipe 210 to make axial displacement matching the telescopic amount, thereby realizing the telescopic movement of the telescopic pipe assembly 200.

[0027] The support groove structure 330 is used to accommodate and support the second inflatable sealing ring 340. The support groove structure 330 is an annular groove, which is cocentric with the mobile pipe body and is arranged outside the entrance of the annular gap 324, and is located at the periphery of one end of the inner tube structure extending out of the mobile pipe body. During specific installation, the support groove structure 330 can be installed on the outer wall of the open end of the mobile pipe body 310. The support groove structure 330 opens toward one side of the outer wall of the inner tube structure 320, and the opening of the groove body is located at the entrance of the annular gap 324, and the depth of the groove body is less than or equal to the diameter of the second inflatable sealing ring 340; the second inflatable sealing ring 340 is installed in the inner cavity of the support groove structure 330, and when the second inflatable sealing ring 340 is inflated, the inner tube structure is pressed against the outer periphery of the telescopic pipe assembly to seal between the two; at the same time, the opening of the annular gap is also sealed, so that the inner cavity of the annular gap constitutes a static pressure chamber.

[0028] By setting the second inflatable sealing ring 340, the dust-containing airflow can be prevented from overflowing from the annular gap 324, the inner tube structure 320 and the telescopic pipe assembly 200, and dust can be prevented from accumulating in the annular gap 324 and affecting the telescopic action of the telescopic pipe 210 in the annular gap. It can also prevent external air from being sucked into the inner cavity of the mobile pipe body 310, effectively reducing energy consumption.

[0029] The specific structure of the second inflatable sealing ring 340 is the same as that of the first inflatable sealing ring 130. When the air inlet pipe is used for inflation / deflation control, the cross-sectional shape of the sealing ring can be changed; when the pipe is inflated, the cross-sectional shape of the sealing ring expands, and the surface of the second inflatable sealing ring 340 contacts the surface of the mobile pipe body 310 to achieve the sealing function; when the pipe is deflated, the cross-sectional shape of the sealing ring shrinks / deflates, so that the telescopic pipe can be inserted into or withdrawn from the inlet pipe 120 without interference. The inflation / deflation of the second inflatable sealing ring 340 is controlled by the compressed air system according to the interlocking conditions. The first inflatable sealing ring 130 and the second inflatable sealing ring 340 are double-sealed, so that the interface between the mobile device and the fixed air duct and the annular gap at the relative displacement of the mobile pipe and the telescopic pipe set for the docking function of the mobile device itself are sealed, eliminating the smoke and dust escape link in the whole process.

[0030] The mobile pipe assembly 300 also includes a telescopic drive cylinder assembly 360; the telescopic drive cylinder assembly 360 is arranged on the outer wall of the mobile pipe body 310, the cylinder output end is parallel to the mobile pipe body 310 and points to the open end of the mobile pipe body 310, and the cylinder output end is connected to the telescopic pipe assembly 200.

[0031] The inner tube structure 320 includes: an outward expansion part 321, a straight tube part 322 and a contraction part 323. The contraction part 323 and the outward expansion part 321 are both truncated cone cylinder structures. The smaller end of the contraction part 323 is arranged toward the open end of the mobile pipe body 310 and extends out of the open end of the mobile pipe body 310. The larger end of the contraction part 323 is connected to one end of the straight tube part 322. The other end of the straight tube part 322 is connected to the smaller end of the outward expansion part 321. The edge of the truncated cone cylinder at the larger end of the outward expansion part 321 is annularly sealed and welded to the inner wall of the cylindrical structure of the mobile pipe body 310. The outward expansion part 321 and the straight tube part 322 of the inner tube structure 320 and the inner cavity of the mobile pipe body 310 together form an annular gap 324 with one end open.

[0032] In the present application, an annular gap 324 is formed by the expanded portion 321 of the truncated cone cylinder structure and the straight cylinder portion 322, instead of directly welding the straight cylinder portion 322 to the inner cavity of the mobile pipe body 310. This is because after docking, when the airflow mixed with smoke and dust is sent into the telescopic pipe 210 through the inner cavity of the mobile pipe body 310, the joint between the inner tube structure 320 and the inner cavity of the mobile pipe body 310 will be flushed. The present application forms a trumpet-shaped joint and an annular gap 324 structure based on the expanded portion 321, which can effectively guide the dust-laden airflow and reduce the probability of damage to the joint, and also effectively guarantee the sealing structure, thereby effectively extending the service life of the equipment.

[0033] like Figure 6 and Figure 7 As 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.

[0034] 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 .

[0035] 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 respectively 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.

[0036] 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.

[0037] 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.

[0038] 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. Fig. 9 As shown in state (1), when the telescopic pipe 210 is retracted back into the annular gap 324, the second conical guide section 214 and the contraction portion 323 can be parallel to each other, and the third straight guide section 215 can be completely retracted into the annular gap 324, ensuring that in the non-working state, when the mobile device is running, the telescopic pipe 210 in the retracted state and the mobile pipe assembly 300 can remain stable, avoiding the structure of the annular gap 324 being damaged by the bumpy operation of the mobile device, thereby extending the service life of the device.

[0039] The telescopic pipe 210 is coaxial with the horizontal part of the mobile pipe and can move relative to it. The telescopic pipe 210 is inserted into the main air duct inlet pipe 120, and the front end is sealed by the first inflatable sealing ring 130 at the inlet pipe 120, and the rear end is sealed by the second inflatable sealing ring 340 at the telescopic pipe and the mobile pipe.

[0040] In the present application, the shape of the inlet pipe 120 is designed to be connected in sequence: a first straight tube section 121, a conical tube section 122, and a second straight tube section 123; at the same time, several guide sections in the telescopic pipe 210 are designed to be: a first straight tube guide section 211, a first conical guide section 212, a second straight tube guide section 213, a second conical guide section 214, and a third straight tube guide section 215.

[0041] In specific implementation, the inner diameter of the second straight-cylinder section 123 with the largest diameter is larger than the outer diameter of the second straight-cylinder guide section 213 in the telescopic pipe 210, ensuring that the inner cavity of the second straight-cylinder section 123 has sufficient space to install the first inflatable sealing ring 130. When sealing between the inlet pipe 120 and the telescopic pipe 210, sealing is achieved based on the first inflatable sealing ring 130 when the positions of the two straight-cylinder sections, the second straight-cylinder section 123 and the second straight-cylinder guide section 213, overlap, ensuring a better sealing effect.

[0042] Similarly, when sealing is achieved between the telescopic pipe 210 and the inner tube structure 320, the second inflatable sealing ring 340 is used to achieve sealing when the positions of the two straight sections: the third straight guide section 215 and the straight section 322 overlap, thereby ensuring a better sealing effect.

[0043] like Figure 3 As shown, in the present application, the intersection of three structures: the inlet pipe 120, the telescopic pipe 210 and the inner pipe structure 320 are sealed respectively by the first inflatable sealing ring 130 and the second inflatable sealing ring 340 to ensure the sealed connection between the fixed main air duct and the on-board pipe interface of the mobile equipment.

[0044] The moving pipe assembly 300 further includes a guide structure; the guide structure includes: a guide hole structure 350 and a guide rod 230 .

[0045] The guide hole structure 350 is arranged on the mobile pipe body 310, for example, on the outer wall of the mobile pipe body 310 and the outer wall of the support groove structure, and the specific installation position is adaptively arranged according to the actual structure of the equipment. The guide rod 230 is arranged parallel to the central axis of the mobile pipe body 310 and the telescopic pipe; one end of the guide rod 230 is installed on the outer wall of the telescopic pipe through the guide rod 230 fixing structure, and the other end of the guide rod 230 is movably inserted in the channel of the guide hole structure 350.

[0046] like Figure 7 As shown, in this embodiment, 3 cylinder fork connection structures 221 and 3 guide rod fixing structures 231 are evenly distributed on the traction flange at the end of the telescopic pipe 210, and the connection structures 221 and the guide rod fixing structures 231 are spaced at an angle of 120°. One end of the guide rod is fixed on the traction flange based on the guide rod fixing structure 231, and the other end is inserted into the inner cavity of the guide hole structure 350. The guide rod 230 is parallel to the axis of the telescopic pipe body, and the aperture of the guide hole structure 350 is larger than the diameter of the guide rod 230. When the telescopic pipe 210 is inserted into the inlet pipe 120, if the axis is fine-tuned, the guide rod can also work normally.

[0047] In order to ensure that the axis can be fine-tuned during the insertion of the telescopic pipe 210 into the inlet pipe 120, the cylinder output end of the telescopic drive cylinder assembly in the present application is connected to the telescopic pipe 210 in an articulated manner, and the articulated shaft 361 is perpendicular to the axis of the telescopic pipe 210.

[0048] Matching with the guide rod fixing structure 231, the guide hole structure 350 is 120 0 The guide rods 230 are distributed to support the guide rods 230. In the present application, three sets of guide structures are provided, and the three guide rods 230 are evenly provided on the circumference of the telescopic pipe 210. The guide rods 230 cooperate with the guide hole structure 350 to support the alignment of the axis of the telescopic pipe 210 with the axis of the inner pipe structure 320, so that the telescopic pipe 210 will not deviate when moving in the annular gap 324, ensuring that the telescopic activity can be smooth and avoiding the problem of damage to the equipment caused by collision between the telescopic pipe 210 and the inner pipe structure 320 or the mobile pipe body 310 during the telescopic movement, thereby extending the service life of the equipment.

[0049] like Fig. 9 As shown in the figure, the mobile duct interface of the mobile equipment finds the upper inlet duct of the main air duct assigned by the system, and docks with the upper inlet duct of the main air duct. After the following process is carried out in sequence, the main air duct sucks the dust and smoke generated during the stationary operation of the mobile equipment: 1) Status: the shutter valve is closed, the movable pipe is aligned, the telescopic pipe is not inserted, and the sealing ring is deflated; The shutter valve is closed, the movable pipe assembly 300 is aligned with the axis of the inlet pipe on the main air duct, the telescopic pipe is not inserted into the inlet pipe on the main air duct, and the two sealing rings are in a deflated state; 2) Status: the shutter valve is closed, the movable pipe is aligned, the telescopic pipe is inserted, and the sealing ring is deflated; The shutter valve is in the closed state. After the axis of the movable pipe assembly 300 is aligned with the inlet pipe 120, the telescopic drive cylinder assembly 360 is started, and the cylinder output end drives the telescopic pipe 210 to move toward the inlet pipe 120 until the telescopic pipe 210 is inserted into the inlet pipe on the main air duct. At this time, the two sealing rings are in a deflated state. 3) Status: the shutter valve is closed, the movable pipe is aligned, the telescopic pipe is inserted, and the sealing ring is inflated; The shutter valve is closed, the axis of the moving pipe is aligned with the axis of the main air duct inlet pipe, and the telescopic pipe has been inserted into the inlet pipe on the main air duct. The two sealing rings are activated until the inflation is completed to achieve sealing of the pipe interface; 4) Status: the shutter valve is open, the movable pipe is aligned, the telescopic pipe is inserted, and the sealing ring is inflated; At this time, the movable pipe is aligned with the axis of the main air duct inlet pipe, the telescopic pipe has been inserted into the inlet pipe on the main air duct, and 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 pipe 120 and the telescopic pipe 210 enters a negative pressure state.

[0050] After the shutter valve is opened in state 4), the fixed main air duct sucks the dust and smoke generated during the parking operation of the mobile equipment. When the parking operation of the track-moving mobile equipment is completed, a signal is sent to the electronic control system, and the electronic control system closes the shutter valve, and then releases the sealing state of the two sealing rings. After the sealing state is released, the telescopic drive cylinder assembly 360 starts in reverse, and the telescopic pipe 210 is pulled out from the inlet pipe 120, and the third straight tube guide section 215 in the telescopic pipe 210 is retracted into the annular gap 324. After the telescopic pipe 210 returns to the default position, the mobile equipment is separated from the inlet pipe on the main air duct. In specific applications, the compressed air system and the electronic control system in this application are both implemented based on existing technologies.

[0051] The dust removal pipeline interface device of the mobile equipment of the present invention can adapt to the working conditions of a single machine and multiple workstations, and can also adapt to the working conditions of multiple machines and multiple workstations on the same track when the conditions are met. When the track-travel mobile equipment performs the set stop point for the process task operation, the interface position of the fixed main air duct corresponds to it. At the interface position, the mobile pipe assembly and the telescopic pipe assembly are aligned with the axis center line of the fixed pipe interface; in the telescopic pipe assembly, the telescopic pipe is inserted into the main air duct inlet pipe 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 link in the whole process is eliminated, the dust removal efficiency is improved, and the waste of energy is eliminated at the same time. Under the same dust removal effect, a low air volume fan can be configured, the main air duct diameter configuration is reduced, and the investment and operating costs are reduced. It can be widely used in the iron and steel metallurgy, mining, cement and other industries, and the docking process of the pipeline of the dust collection system on the track mobile equipment and the fixed pipeline of the dust removal treatment.

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. When the telescopic pipe assembly is inserted into the main air duct inlet assembly, the first inflatable sealing ring seals the interface by inflating.

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 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 being inflated, the second inflatable sealing ring presses the inner tube structure against the outer periphery of the telescopic pipe assembly to seal the two, and also seals the opening of the annular gap to make the inner cavity of the annular gap form a static pressure cavity.

3. According to claim 2, 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.

4. According to claim 2, 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 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.

5. According to claim 2, 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.

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 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.

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 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.

8. The energy-saving docking device for the mobile dust removal pipeline of the hot repair car of the molten steel tank according to claim 7 is characterized by: 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.

9. According to claim 2, 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.

10. The energy-saving docking device for the mobile dust removal pipeline of the hot repair machine of the molten steel tank according to claim 2 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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