Automatic connecting device for blanking port of metallurgical system

Abstract

The application belongs to the technical field of metallurgy, in particular to a metallurgical system blanking port automatic connecting device, which comprises a fixed seat, a sealing flange slidingly installed at the bottom end of the fixed seat, an electric push rod arranged on the ring side of the fixed seat and used for driving the sealing flange to move downward, and a supporting spring used for pushing the sealing flange to move upward; by arranging the sealing flange outside the blanking pipe, the sealing flange is started to move downward during blanking, and the feeding port is sealed by the sealing flange, so that the blanking pipe and the feeding port are sealed, the dust in the blanking process is prevented from entering the surrounding environment, the dust problem in the metallurgical blanking is improved, a gap is left between the inner wall of the sealing flange and the outer wall of the blanking pipe, only when blanking, the sealing gasket is stretched and tightly sealed on the side of the blanking pipe, the abrasion is reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of metallurgy, in particular to a kind of automatic connection device for blanking port of metallurgical system. BACKGROUND

[0002] When preparing auxiliary materials such as alloy before smelting in metallurgical enterprises, the auxiliary materials need to be put into each feeding port in the stock bin. The general operation method is to place the auxiliary materials in the distribution trolley, which is provided with a blanking port. The distribution trolley walks along the stock bin to each work station and then stops, and then the auxiliary materials are put into the feeding port through the blanking port.

[0003] In order not to affect the walking of the distribution trolley, the blanking port in the distribution trolley is not in contact with the feeding port in the stock bin, and a gap is left between the two. Since many auxiliary materials contain dust, a large amount of dust will be generated during the blanking process. The dust will escape from the gap between the blanking port and the feeding port into the surrounding environment, which is also the main source of dust and ash in the metallurgical system loading workshop. The dust not only increases the difficulty of ultra-low emission maintenance work and significantly reduces the service life of the equipment, but also affects the occupational health and safety of employees. Therefore, how to effectively solve or reduce the dust in the metallurgical system loading workshop is a technical problem that needs to be solved in enterprise production.

[0004] Therefore, the present application provides an automatic connection device for blanking port of metallurgical system. SUMMARY

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0006] The technical scheme adopted by the present application to solve its technical problems is: the automatic connection device for blanking port of metallurgical system, comprising a fixed seat, the fixed seat is fixedly connected to the outside of the blanking pipe in the distribution trolley, the lower segment of the blanking pipe is cylindrical, and the distribution trolley moves to carry out blanking work on the feeding port on the stock bin. It also includes: a sealing flange slidingly installed at the bottom end of the fixed seat, the sealing flange is located outside the cylindrical segment of the blanking pipe, and the sealing flange covers the outside of the blanking pipe and the feeding port after moving downward; an electric push rod provided on the ring side of the fixed seat for driving the sealing flange to move downward; a supporting spring for pushing the sealing flange to move upward, the bottom end of the supporting spring extends below the sealing flange; a limit switch for controlling the distribution trolley, and the electric push rod contacts the limit switch after moving upward.

[0007] Preferably, the bottom end of the sealing flange is provided with a receiving groove for receiving the supporting spring.

[0008] Preferably, a gap is left between the inner wall of the sealing flange and the feeding pipe, and the sealing flange further comprises a sealing pad arranged on the inner wall of the sealing flange, the sealing pad is annular, and the sealing pad extends towards the feeding pipe to seal the gap between the sealing flange and the feeding pipe; and a control mechanism is arranged for controlling the extension and retraction of the sealing pad.

[0009] Preferably, the control mechanism comprises a storage groove arranged on the inner wall of the sealing flange, the storage groove comprises an upper inclined groove section and a lower vertical groove section, the sealing pad is arranged on the top opening of the inclined groove section, particles are filled in the storage groove, and a piston is movably inserted into the vertical groove section, and the particles are arranged above the piston.

[0010] Preferably, the control mechanism further comprises a plurality of positioning mechanisms, each of the positioning mechanisms comprises a guide rod fixedly connected to the bottom of the piston, a flange is arranged on the ring side of the guide rod, an outer rod is movably inserted into the sealing flange at the bottom end of the sealing flange, the guide rod is movably inserted into the inner rod, the bottom end of the outer rod extends below the sealing flange, a pushing spring is fixedly connected to the top end of the outer rod, a striker plate is fixedly connected to the top end of the pushing spring, the striker plate is in contact with the flange after being moved upwards by the pushing spring, a first clamping block is movably inserted into the sealing flange, the first clamping block is arranged above the striker plate, and the first clamping block is arranged below the flange.

[0011] Preferably, the positioning mechanism further comprises a first wedge block fixedly connected to the outer rod, the outer rod is moved upwards to drive the first clamping block to separate from the striker plate through the first wedge block, and a first reset spring is arranged on the first clamping block.

[0012] Preferably, the positioning mechanism further comprises a second clamping block movably inserted into the sealing flange, a second reset spring is arranged on the second clamping block, the second clamping block is arranged below the piston after the piston is moved upwards and is pushed downwards by the second reset spring, a second wedge block is fixedly connected to the electric push rod, and the second clamping block is driven to separate from the piston through the second wedge block after the electric push rod is moved upwards.

[0013] Preferably, the width of the guide rod is smaller than the groove width of the vertical groove section, a sliding groove is arranged in the inner rod of the outer rod for the guide rod to slide, and a gap is left between the bottom end of the guide rod and the groove bottom of the sliding groove.

[0014] Preferably, the bottom end of the electric push rod is provided with a limiting block, a stepped hole corresponding to the limiting block is arranged in the receiving groove, a gap is left between the limiting block and the hole bottom of the stepped hole, and the supporting spring is fixedly connected to the bottom end of the electric push rod.

[0015] Preferably, the sealing flange comprises two flange pieces which are detachable.

[0016] The beneficial effects of the present application are as follows:

[0017] 1. The automatic connection device for the discharge port of a metallurgical system, by setting a sealing flange outside the discharge pipe, when discharging, the sealing flange is activated to move downward, and the feeding port is sealed by the sealing flange, which realizes the sealing of the discharge pipe and the feeding port, avoids the dust in the discharging process from entering the surrounding environment, and improves the dust problem of metallurgical discharging.

[0018] 2. The automatic connection device for the discharge port of a metallurgical system, a gap is left between the inner wall of the sealing flange and the outer wall of the discharge pipe, only when discharging, the sealing gasket is stretched and tightly attached to the side of the discharge pipe, sealing the gap between the sealing flange and the discharge pipe, not only reducing the wear of the sealing flange and the discharge pipe, but also reducing the wear of the sealing gasket, which is not always attached to the discharge pipe, and prolonging the service life.

[0019] 3. The automatic connection device for the discharge port of a metallurgical system, by setting a control mechanism and a positioning mechanism, during the discharging process, after the sealing flange moves downward, the particles are pushed upward by the outer rod and the inner rod, so that the sealing gasket is stretched and inflated, and the sealing is performed, and the second clamping block clamps the piston piece, which ensures the stability of the sealing, after the discharging is completed, the whole device is automatically reset, the sealing work and the sealing release work of the sealing gasket are automatically performed, without the need for additional electrical driving system, simple structure, convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a three-dimensional view of the working state of the embodiment one of the present application;

[0022] Figure 2 is a front view of the present application;

[0023] Figure 3 is a schematic view of the cooperation between the sealing flange and the discharge pipe;

[0024] Figure 4 is a half-section view of the cooperation structure between the sealing flange and the discharge pipe;

[0025] Figure 5 is an exploded view of the sealing flange and the sealing gasket;

[0026] Figure 6 is an exploded view of the piston piece and the electric push rod;

[0027] Figure 7 is Figure 4 is a local enlarged view of A in the middle;

[0028] Figure 8 This is an exploded view of the guide rod and the outer rod;

[0029] Figure 9 This is a partial schematic diagram of the electric push rod and the second locking block. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0031] Example 1

[0032] like Figures 1-3 As shown in the embodiment of the present invention, an automatic feeding port connection device for a metallurgical system includes a fixed base 1, which is fixedly connected to the outside of the feeding pipe 101 in the feeding trolley 100. The lower section of the feeding pipe 101 is cylindrical. During the movement of the feeding trolley 100, the feeding device performs feeding work on the feeding port 201 on the hopper 200. The device also includes: a sealing flange 2 slidably installed at the bottom end of the fixed base 1, the sealing flange 2 being located outside the cylindrical section of the feeding pipe 101. After the sealing flange 2 moves down, it covers the outside of the feeding pipe 101 and the feeding port 201; an electric push rod 3 provided on the ring side of the fixed base 1 for driving the sealing flange 2 to move down; a support spring 4 for pushing the sealing flange 2 to move up, the bottom end of the support spring 4 extending below the sealing flange 2; and a limit switch 5 for controlling the feeding trolley 100. After the electric push rod 3 moves up, it contacts the limit switch 5.

[0033] The adapter is installed at the discharge pipe 101 of the distributing trolley 100, and is used in combination with the distributing trolley 100 and the stock bin 200 in the metallurgical discharging system. The top end of the stock bin 200 is provided with a plurality of feeding ports 201, and each feeding port 201 is a working position. The distributing trolley 100 is loaded with metallurgical auxiliary materials. Since the metallurgical auxiliary materials contain dust, dust will be raised during discharging. In order to improve the dust raising problem of the metallurgical discharging, a sealing flange 2 is arranged on the discharge pipe 101. Specifically, in the initial state, the sealing flange 2 is located at the top end of its moving range and does not contact the stock bin 200, so as not to affect the movement of the distributing trolley 100. When discharging the stock bin 200, the distributing trolley 100 is started to move at the top end of the stock bin 200, and the distributing trolley 100 stops at the working position. At this time, the discharge pipe 101 in the distributing trolley 100 is aligned with the feeding port 201. The electric push rod 3 is energized, so that the electric push rod 3 moves downward, and the sealing flange 2 moves downward and is attached to the top of the stock bin 200 and covers the outside of the feeding port 201. The height of the sealing flange 2 is greater than the distance between the bottom end of the discharge pipe 101 and the top end of the feeding port 201. The feeding port 201 is sealed by the sealing flange 2. Then, the distributing trolley 100 can send the metallurgical auxiliary materials into the discharge pipe 101. The device realizes the sealing of the discharge pipe 101 and the feeding port 201, avoids the dust raising in the discharging process from entering the surrounding environment, improves the dust raising problem during the feeding of the metallurgical system, reduces the amount of dust raising, and reduces the safety risk of cleaning the accumulated dust in the complex environment of the feeding workshop.

[0034] After the discharging is completed, the electric push rod 3 is de-energized. The electric push rod 3 is lifted upward under the action of the supporting spring 4, so that the sealing flange 2 is separated from the feeding port 201. After the electric push rod 3 is lifted to the highest point, the limit switch 5 is touched, and the limit switch 5 is connected, so that the trolley is started and runs to the next working position to continue discharging. In this way, automatic continuous work can be realized.

[0035] As shown in Figures 4-7 the bottom end of the sealing flange 2 is provided with a receiving groove 21 for receiving the supporting spring 4.

[0036] Specifically, during discharging, the sealing flange 2 moves downward, and the supporting spring 4 is compressed and shrunk in the receiving groove 21, so as to ensure that the sealing flange 2 can be closely attached to the top end of the stock bin 200, and the sealing property between the discharge pipe 101 and the feeding port 201 during discharging is ensured.

[0037] As shown in Figures 4-7As shown, the inner wall of the sealing flange 2 and the blanking pipe 101 leave a gap, and further comprises: a sealing gasket 6 arranged on the inner wall of the sealing flange 2, the sealing gasket 6 is annular, and the sealing gasket 6 extends to the direction of the blanking pipe 101 to seal the gap between the sealing flange 2 and the blanking pipe 101; and a control mechanism 7 for controlling the expansion and contraction of the sealing gasket 6.

[0038] Specifically, the sealing gasket 6 is made of rubber material with elastic expansion deformation ability. If the sealing flange 2 is always closely attached to the blanking pipe 101, the sealing flange 2 moves up and down continuously during the whole metallurgical blanking process, and the whole inner wall of the sealing flange 2 is rubbed with the blanking pipe 101, so that the sealing flange 2 and the blanking pipe 101 are both prone to wear, resulting in reduced service life of the sealing flange 2 and the blanking pipe 101. In order to reduce the wear and ensure the sealing effect, a gap is left between the inner wall of the sealing flange 2 and the outer wall of the blanking pipe 101. In the initial state, the sealing gasket 6 is in a contracted state, and the sealing flange 2 and the sealing gasket 6 are not in direct contact with the blanking pipe 101. When the sealing flange 2 moves down to be attached to the stock bin 200, the sealing gasket 6 is stretched, and the sealing gasket 6 is tightly attached to the circumferential side of the blanking pipe 101 after being stretched, thereby sealing the gap between the sealing flange 2 and the blanking pipe 101. This scheme not only reduces the wear of the sealing flange 2 and the blanking pipe 101, but also reduces the wear of the sealing gasket 6 as the sealing gasket 6 is not always attached to the blanking pipe 101, thereby prolonging the service life.

[0039] As shown in the drawings, Figures 4-7 The control mechanism 7 comprises: a storage groove 71 opened on the inner wall of the sealing flange 2, the storage groove 71 comprises an upper inclined groove section and a lower vertical groove section, and the sealing gasket 6 is covered on the top opening of the inclined groove section; granular materials 72 filled in the storage groove 71; and a piston 73 movably inserted into the vertical groove section, and the granular materials 72 are located above the piston 73.

[0040] Specifically, as shown in the drawings, Figure 7 The right side of the inclined groove section is close to the blanking pipe 101, the left side of the inclined groove section is lower than the right side, the vertical groove section is communicated with the left end of the inclined groove section, and the granular materials 72 can be selected from fine sand and other powders. In the initial state, the granular materials 72 are located in the storage groove 71 region between the piston 73 and the sealing gasket 6. During the blanking process, after the sealing flange 2 is attached to the stock bin 200, the piston 73 is started to move upward, the piston 73 pushes the granular materials 72 to move upward, the granular materials 72 further push the sealing gasket 6 to stretch and bulge, so that the sealing gasket 6 is attached to the blanking pipe 101. By arranging the granular materials 72, it can be ensured that the inner side of the sealing gasket 6 can be attached to the outer wall of the blanking pipe 101 all around, thereby ensuring the sealing effect.

[0041] After the discharging is completed, the piston 73 is lowered, and the granular objects 72 automatically fall back into the storage groove 71 under the action of gravity due to the inclined chute section.

[0042] As shown in Figures 2-8 , the positioning mechanism 8 further comprises a guide rod 81 fixed to the bottom of the piston 73, a flange 811 is arranged on the ring side of the guide rod 81; an outer rod 82 movably inserted into the bottom end of the sealing flange 2, the guide rod 81 movably inserted into the inner part of the outer rod 82, and the bottom end of the outer rod 82 extends below the sealing flange 2; a push spring 83 fixed to the top end of the outer rod 82; a baffle plate 84 fixed to the top end of the push spring 83, which is in contact with the flange 811 after being pushed upward by the push spring 83; a first clamping block 85 movably inserted into the sealing flange 2, which is located above the baffle plate 84 and below the flange 811.

[0043] Specifically, the guide rod 81 and the outer rod 82 can slide up and down, the first clamping block 85 can slide left and right, the guide rod 81 passes through the inside of the push spring 83 and the baffle plate 84, and the push spring 83 is in a relaxed state in the initial state.

[0044] As shown in Figures 2-8 , the positioning mechanism 8 further comprises a first wedge block 86 fixed to the outer rod 82, which drives the first clamping block 85 to separate from the baffle plate 84 after the outer rod 82 is moved upward, and a first reset spring 851 is arranged on the first clamping block 85.

[0045] Specifically, the top end of the first wedge block 86 is provided with a slope, and a through groove corresponding to the slope is formed in the inner part of the first clamping block 85, as shown in Figure 7 , in the initial state, the first clamping block 85 is located on the left side of its moving range under the push of the first reset spring 851, and blocks the baffle plate 84 from moving upward.

[0046] As shown in Figures 2-8 , the positioning mechanism 8 further comprises a second clamping block 87 movably inserted into the sealing flange 2, a second reset spring 871 is arranged on the second clamping block 87, and the second clamping block 87 is located below the piston 73 under the push of the second reset spring 871 after the piston 73 is moved upward; a second wedge block 88 fixed to the electric push rod 3, which drives the second clamping block 87 to separate from the piston 73 after the electric push rod 3 is moved upward.

[0047] Specifically, the top end of the second wedge block 88 is provided with a slope, and a recess corresponding to the slope is formed in the bottom of the second clamping block 87; asFigure 7 As shown, in the initial state, the second stop block 87 is located to the left of the piston 73, and the second stop block never comes into contact with the particulate matter 72;

[0048] like Figures 7-9 As shown, the width of the guide rod 81 is less than the width of the vertical groove section, and the outer rod 82 has a sliding groove 821 inside for the guide rod 81 to slide. There is a gap between the bottom end of the guide rod 81 and the bottom of the sliding groove 821.

[0049] Specifically, the vertical groove section serves to support and limit the piston 73, thereby limiting the downward stroke of the inner rod. In the initial state, the outer rod 82 and the inner rod are located at the bottom of their respective movement ranges under their own gravity. After the sealing flange 2 moves down, the outer rod 82 contacts the hopper 200 and moves upward. During the upward movement of the outer rod 82, the bottom of the groove 821 does not contact the bottom of the inner rod. Therefore, the outer rod 82 does not push the inner rod upward.

[0050] like Figures 7-9 As shown, the bottom end of the electric push rod 3 is provided with a limiting block 31, and the storage groove 21 is provided with a stepped hole 211 corresponding to the limiting block 31. A gap is left between the limiting block 31 and the bottom of the stepped hole 211, and the support spring 4 is fixedly connected to the bottom end of the electric push rod 3.

[0051] Specifically, the limiting block 31 and the stepped hole 211 are used to limit the up and down movement of the electric push rod 3 relative to the sealing flange 2. In the initial state, the sealing flange 2 is suspended on the limiting block 31.

[0052] During material unloading, the electric push rod 3 is activated to move downwards, which in turn moves the sealing flange 2 downwards as well; Figure 7 For example, when the sealing flange 2 moves down, the outer rod 82 contacts the hopper 200 and moves up automatically. After the outer rod 82 moves up, it squeezes the push spring 83, causing the push spring 83 to be compressed. As the outer rod 82 continues to move up, the first wedge block 86 contacts the first locking block 85 and pushes the first locking block 85 to the right, causing the first locking block 85 to separate from the impact plate 84. Then, the impact plate 84 moves up under the push of the push spring 83 and drives the piston 73 to push the particles 72 up. After the particles 72 move up, they cause the sealing gasket 6 to stretch and deform. After stretching, the bulging sealing gasket 6 is tightly attached to the feed pipe 101. The stretched sealing gasket 6 seals the gap between the inner wall of the sealing flange 2 and the outer wall of the feed pipe 101. At this time, the piston 73 moves to the top of the second locking block 87.

[0053] When the sealing flange 2 is lowered to fit the top end of the silo 200, the electric push rod 3 can also be lowered by a distance, and after the electric push rod 3 continues to be lowered, the second wedge block 88 is lowered to be separated from the second clamping block 87, and the second clamping block 87 is moved to the lower side of the piston piece 73 under the pushing of the second reset spring 871, blocks the piston piece 73, prevents the piston piece 73 from moving downward, and maintains the state of the granular material 72 to bulge the sealing gasket 6, thereby further ensuring the stability of the sealing effect.

[0054] During the discharging process, the pushing spring 83 is also compressed. After the discharging is completed, the electric push rod 3 is powered off, the supporting spring 4 pushes the electric push rod 3 to move upward, after the electric push rod 3 moves upward, the second wedge block 88 contacts the second clamping block 87 and drives the second clamping block 87 to separate from the piston piece 73, the piston piece 73 and the inner rod move downward under the action of their own gravity, the granular material 72 falls back into the storage groove 71, the sealing gasket 6 automatically shrinks and separates from the discharging pipe 101, then the electric push rod 3 drives the sealing flange 2 to move upward through the limiting block 31, so that the sealing flange 2 is separated from the feeding port 201, and the sealing gasket 6 does not contact the discharging pipe 101 during the upward movement of the sealing flange 2, which not only avoids the obstruction caused by the sealing gasket 6 during the upward movement, but also reduces the wear of the sealing gasket 6; the sealing work and the unsealing work of the sealing gasket 6 are automatically performed, without the need for an additional electrical driving system, and the structure is simple and convenient to use.

[0055] Embodiment two

[0056] As shown in Figures 1-5 Comparative Embodiment One, another embodiment of the present application is that: the sealing flange 2 comprises two detachable flange pieces.

[0057] Specifically, the upper flange of the two flange pieces is connected with the electric push rod 3, and the lower flange is detachably installed at the bottom end of the upper flange. Through this arrangement, when the sealing flange 2 is fitted with the silo 200, the friction between the sealing flange 2 and the silo 200 is mainly concentrated on the lower flange, and when wear occurs, the entire sealing flange 2 does not need to be replaced, and the replacement is convenient.

[0058] Working principle: when the silo 200 is discharging, the electric push rod 3 is powered on, so that the electric push rod 3 moves downward, and the sealing flange 2 moves downward and fits the top of the silo 200 and covers the outside of the feeding port 201, and then the feeding port 201 is sealed by the sealing flange 2, and then the metallurgical auxiliary material is fed into the discharging pipe 101, and the device realizes the sealing of the discharging pipe 101 and the feeding port 201, and avoids the dust in the discharging process from entering the surrounding environment.

[0059] During the unloading process, after the electric push rod 3 moves down, it drives the sealing flange 2 to move down as well; Figure 7 For example, when the sealing flange 2 moves down, the outer rod 82 contacts the hopper 200 and moves up automatically. After the outer rod 82 moves up, it squeezes the push spring 83, causing the push spring 83 to be compressed. As the outer rod 82 continues to move up, the first wedge block 86 contacts the first locking block 85 and pushes the first locking block 85 to the right, causing the first locking block 85 to separate from the impact plate 84. Then, the impact plate 84 moves up under the push of the push spring 83 and drives the piston 73 to push the particles 72 up. After the particles 72 move up, they cause the sealing gasket 6 to stretch and deform. After stretching, the bulging sealing gasket 6 is tightly attached to the feed pipe 101. The stretched sealing gasket 6 seals the gap between the inner wall of the sealing flange 2 and the outer wall of the feed pipe 101. At this time, the piston 73 moves to the top of the second locking block 87.

[0060] After the sealing flange 2 moves down to fit against the top of the hopper 200, the electric push rod 3 can move down a certain distance. After the electric push rod 3 continues to move down, the second wedge block 88 moves down to separate from the second locking block 87. The second locking block 87 moves under the push of the second return spring 871 to the bottom of the piston 73, blocking the piston 73 and preventing the piston 73 from moving down. The particles 72 maintain the state of bulging the sealing gasket 6, further ensuring the sealing effect.

[0061] During the feeding process, the push spring 83 is also compressed. After feeding is completed, the electric push rod 3 is de-energized, and the support spring 4 pushes the electric push rod 3 upward. After the electric push rod 3 moves upward, the second wedge block 88 contacts the second locking block 87 and drives the second locking block 87 to separate from the piston 73. The piston 73 and the inner rod move downward and reset under their own gravity, and the particles 72 fall back into the storage tank 71. The sealing gasket 6 automatically retracts and separates from the feeding pipe 101. Then, the electric push rod 3 drives the sealing flange 2 upward through the limit block 31, so that the sealing flange 2 separates from the feed port 201. During the upward movement of the sealing flange 2, the sealing gasket 6 does not contact the feeding pipe 101, which not only avoids the obstruction caused by the sealing gasket 6 to the upward movement process, but also reduces the wear of the sealing gasket 6. The sealing and unsealing work of the sealing gasket 6 is carried out automatically without the need for an additional electrical drive system. The structure is simple and easy to use.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic feeding port connection device for a metallurgical system, comprising a fixed base (1), wherein the fixed base (1) is fixedly connected to the outside of the feeding pipe (101) in a feeding trolley (100), the lower section of the feeding pipe (101) is cylindrical, and the feeding trolley (100) performs feeding work on the feeding port (201) on the hopper (200) during movement, characterized in that: Also includes: A sealing flange (2) is slidably installed at the bottom of the fixed seat (1). The sealing flange (2) is located on the outside of the cylindrical section in the feed pipe (101). After the sealing flange (2) moves down, it covers the outside of the feed pipe (101) and the feed inlet (201). An electric push rod (3) is provided on the ring side of the fixed seat (1) to drive the sealing flange (2) to move downward; A support spring (4) is used to push the sealing flange (2) upward, the bottom end of the support spring (4) extending below the sealing flange (2); The limit switch (5) is used to control the fabric trolley (100). After the electric push rod (3) moves up, it contacts the limit switch (5). A gap is left between the inner wall of the sealing flange (2) and the feed pipe (101), and it also includes: A sealing gasket (6) is provided on the inner wall of the sealing flange (2). The sealing gasket (6) is in the shape of a ring. After the sealing gasket (6) extends towards the feed pipe (101), it seals the gap between the sealing flange (2) and the feed pipe (101). Control mechanism (7) for controlling the extension and retraction of the sealing gasket (6); The control mechanism (7) includes: A storage groove (71) is formed on the inner wall of the sealing flange (2), the storage groove (71) includes an upper inclined groove section and a lower vertical groove section, and the sealing gasket (6) covers the top opening of the inclined groove section; Particles (72) filling the inside of the storage tank (71); A piston (73) is movably inserted into the vertical groove section, and the particulate matter (72) is located above the piston (73); It also includes several sets of positioning mechanisms (8), wherein the positioning mechanisms (8) include: A guide rod (81) is fixed to the bottom of the piston (73), and the guide rod (81) has a flange (811) on its circumferential side. An outer rod (82) is movably inserted into the bottom end of the sealing flange (2), and a guide rod (81) is movably inserted into the interior of the outer rod (82). The bottom end of the outer rod (82) extends to the bottom of the sealing flange (2). A push spring (83) is fixed to the top of the outer rod (82); A striking plate (84) is fixed to the top of the push spring (83). After the striking plate (84) moves upward under the push of the push spring (83), it contacts the flange (811). A first locking block (85) is movably inserted inside the sealing flange (2), the first locking block (85) blocks above the impact plate (84), and the first locking block (85) is located below the flange (811); The positioning mechanism (8) further includes a first wedge (86) fixed to the outer rod (82). After the outer rod (82) moves upward, the first wedge (86) drives the first locking block (85) to separate from the impact plate (84). The first locking block (85) is provided with a first return spring (851). When the sealing flange (2) moves down, the outer rod (82) contacts the hopper (200) and moves up automatically. After the outer rod (82) moves up, it squeezes the push spring (83).

2. The automatic feeding port connection device for a metallurgical system according to claim 1, characterized in that: The bottom end of the sealing flange (2) is provided with a storage groove (21) for storing the support spring (4).

3. The automatic feeding port connection device for a metallurgical system according to claim 2, characterized in that: The positioning mechanism (8) further includes: A second locking block (87) is movably inserted inside the sealing flange (2). A second return spring (871) is provided on the second locking block (87). After the piston (73) moves upward, the second locking block (87) is pushed by the second return spring (871) and blocks below the piston (73). The second wedge (88) is fixed to the electric push rod (3). After the electric push rod (3) moves upward, the second wedge (88) drives the second locking block (87) to separate from the piston (73).

4. The automatic feeding port connection device for a metallurgical system according to claim 3, characterized in that: The width of the guide rod (81) is less than the width of the vertical groove section. The outer rod (82) has a sliding groove (821) inside for the guide rod (81) to slide. There is a gap between the bottom of the guide rod (81) and the bottom of the sliding groove (821).

5. An automatic feeding port connection device for a metallurgical system according to claim 4, characterized in that: The electric push rod (3) has a limiting block (31) at its bottom end. The storage groove (21) has a stepped hole (211) corresponding to the limiting block (31). There is a gap between the limiting block (31) and the bottom of the stepped hole (211). The support spring (4) is fixed to the bottom end of the electric push rod (3).

6. An automatic feeding port connection device for a metallurgical system according to claim 5, characterized in that: The sealing flange (2) comprises two detachable flanges.

Images