RH alloy feeding device with dynamic feeding sealing mechanism

Abstract

The utility model belongs to the technical field of molten steel purification, and particularly relates to an RH alloy feeding device with a dynamic feeding sealing mechanism. The device comprises an air cylinder, a material receiving box, a connector, a guide channel, a conical sealing mechanism and a bottom flange, the air cylinder is vertically connected to the upper surface of the top of the material receiving box, and a piston of the air cylinder penetrates through the upper top surface of the material receiving box, extends into the material receiving box and is connected with the conical sealing mechanism through a connector. The guide channel is fixedly connected to the inner top surface of the receiving box; the conical sealing mechanism is arranged in the guide channel and can move up and down along the inner side wall of the guide channel; and the bottom flange is hermetically connected to a discharge hole in the bottom of the receiving box. The stroke of the air cylinder is controlled according to a set value of the pressure sensor, and dynamic and reliable sealing is achieved; the air cylinder is connected with the sealing body through the knuckle bearing, so that the sealing effect is optimal, the service life of the sealing ring is prolonged, the leakproofness of all links in the feeding process is guaranteed, and the influence of leakage points on the load of a vacuum system is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of molten steel purification, and in particular relates to an RH alloy feeding device with a dynamic feeding sealing mechanism. Background Art

[0002] During RH refining, charging is one of the main core operations. According to the steel smelting process, the raw materials are transported from the high-level silo to the hopper via a belt conveyor, a weighing silo, and a vibrating feeder. The carbon and aluminum hoppers are added in advance according to the predetermined design amount, and no material is added during the vacuuming process. The alloy hopper is charged in batches according to the process requirements, so the airtightness of each link in the charging process must be ensured to reduce the impact of leakage points on the vacuum system load.

[0003] Since the vacuum system involves many links, when the vacuum degree does not meet the standard, each link needs to be checked, which is a lot of work. The existing alloy feeding device sets the stroke of the cylinder to make the sealing ring press and form a seal. With the repeated wear of the sealing ring, the preset stroke cannot meet the sealing requirements, and dynamic sealing cannot be achieved. The sealing ring can only be replaced regularly, which reduces the service life of the sealing ring and cannot guarantee the vacuum degree requirements. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an RH alloy feeding device with a dynamic feeding sealing mechanism.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A RH alloy feeding device with a dynamic feeding sealing mechanism comprises a cylinder, a receiving box, a connecting head, a guide channel, a conical sealing mechanism and a bottom flange; the cylinder is vertically connected to the upper surface of the top of the receiving box, the piston of the cylinder passes through the top surface of the receiving box and extends into the receiving box, and is connected to the conical sealing mechanism through the connecting head; the guide channel is fixedly connected to the inner top surface of the receiving box; the conical sealing mechanism is placed in the guide channel and can move up and down along the inner side wall of the guide channel; the bottom flange is sealingly connected to the discharge port at the bottom of the receiving box.

[0007] The receiving box is a hollow structure with a square top and a round bottom, and a discharge port is arranged at its bottom; the receiving box includes a conical sealing mechanism moving bin, a feeding bin and a sleeve flange mechanism; the moving bin is connected with the feeding bin; a feeding port is arranged on the feeding bin; the bottoms of the conical sealing mechanism moving bin and the feeding bin are connected with the bottom flange; the sleeve flange mechanism is horizontally connected to the upper side walls of the conical sealing mechanism moving bin and the guide channel, and one end of the sleeve flange mechanism is connected with the guide channel, and the end face of the sleeve flange mechanism is flush with the inner side wall of the guide channel, and the other end of the sleeve flange mechanism extends to the outside of the side wall of the receiving box; a conical sealing mechanism is arranged in the conical sealing mechanism moving bin.

[0008] The sleeve flange mechanism includes a sleeve flange joint, a sealing plate, a first O-ring and a sleeve flange; one end of the sleeve flange is connected to the guide channel, and the end face of the end is flush with the inner wall of the guide channel; the other end of the sleeve flange mechanism extends to the outside of the side wall of the conical sealing mechanism moving bin, and a sealing plate is connected to the end face of the end, and a first O-ring is provided at the connection between the sealing plate and the sleeve flange; the sealing plate is connected to the sleeve flange joint.

[0009] The sleeve flange joint includes a screw plug, a distance ring, a nut, a sealing ring and a third O-ring; one end of the nut is placed outside the sealing plate, and the other end is placed horizontally inside the sealing plate and connected to the sleeve flange; a third O-ring is provided at the junction of the nut and the surface of the sealing plate; the screw plug is threadedly connected in the nut; the distance ring is placed in the nut and at the bottom of the screw plug; a sealing ring is provided between the distance ring and the inner wall of the nut.

[0010] The nut is an integrated structure consisting of an upper circular ring and a lower circular ring; threads are arranged on the inner side wall of the upper circular ring and the outer side wall of the lower circular ring.

[0011] The sealing plate is an RF type flange; a first O-type sealing ring is arranged between the sealing plate and the sleeve flange.

[0012] The guide channel is in the shape of a circular ring, and the top of the guide channel is fixedly connected to the top surface of the receiving box.

[0013] The conical sealing mechanism includes a spherical bearing, a bearing seat, a pressure sensor, a sealing body plate and a conical sealing body; the conical sealing body is a bell-mouth structure with an open top and a pipe flange at the bottom, a pressure plate is connected to the bottom surface of the pipe flange, and a sealing ring is arranged between the pressure plate and the pipe flange; the bottom of the outer side of the sealing ring is a conical surface corresponding to the inner ring of the bottom flange; the sealing body plate is horizontally fixedly connected to the bottom side wall inside the conical sealing body; a plurality of pressure sensors are connected between the bearing seat and the sealing body plate; the connecting head is assembled on the bearing seat through a spherical bearing; the conical sealing body can move up and down in the guide channel.

[0014] The bottom flange has a conical surface that is larger at the top and smaller at the bottom; the height of the guide channel is greater than the height of the conical sealing mechanism and less than the height of the receiving box. Beneficial Effects

[0015] (1) The utility model is composed of a cylinder, a material receiving box, a connector, a guide channel, a conical sealing mechanism and a bottom flange. The utility model controls the stroke of the cylinder according to the set value of the pressure sensor in the conical sealing mechanism, thereby achieving dynamic and reliable sealing during the feeding process.

[0016] (2) In the utility model, the cylinder and the sealing body are connected by a spherical bearing, so that the sealing effect is optimized, which not only increases the service life of the sealing ring, but also ensures the airtightness of each link in the feeding process and reduces the influence of leakage points on the load of the vacuum system.

[0017] (3) The conical sealing body of the utility model adopts a conical structure with a larger upper part and a smaller lower part, which can effectively reduce the material pressure and play a better guiding role.

[0018] (4) The sealing body plate in the utility model is horizontally fixedly connected to the inner wall of the conical sealing body, thereby enhancing the pressure bearing capacity of the conical sealing mechanism.

[0019] (5) The design of the sleeve flange mechanism in the utility model ensures the sealing of the signal line lead-out.

[0020] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is a structural schematic diagram of the casing flange joint in the utility model.

[0024] Figure 3 for Figure 1 AA section view in.

[0025] Figure 4 It is a structural schematic diagram of the conical sealing body in the utility model.

[0026] Figure 5 It is a structural schematic diagram of the nut in the utility model.

[0027] In the figure: 1. cylinder; 2. receiving box; 3. sleeve flange joint; 4. sealing plate; 5. first O-ring; 6. connecting nut; 7. connector; 8. spherical bearing; 9. bearing seat; 10. pressure sensor; 11. second O-ring; 12. bottom flange; 13. sealing ring; 14. pressure plate; 15. sealing body plate; 16. conical sealing body; 17. piston; 18. guide channel; 19. pipe flange; 301. screw plug; 302. distance ring; 303. nut; 304. sealing ring; 305. third O-ring; 3031. upper ring; 3032. lower ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0029] according to Figure 1-Figure 5 The RH alloy feeding device with a dynamic feeding sealing mechanism shown in the figure comprises a cylinder 1, a receiving box 2, a connecting head 7, a guide channel 18, a conical sealing mechanism and a bottom flange 12; the cylinder 1 is vertically connected to the upper surface of the top of the receiving box 2, the piston 17 of the cylinder 1 passes through the top surface of the receiving box 2 and extends into the receiving box 2, and is connected to the conical sealing mechanism through the connecting head 7; the guide channel 18 is fixedly connected to the inner top surface of the receiving box 2; the conical sealing mechanism is in the guide channel 18 and can move up and down along the inner wall of the guide channel 18; the bottom flange 12 is sealingly connected to the discharge port at the bottom of the receiving box 2.

[0030] When feeding is needed, the cylinder 1 applies downward pressure to the conical sealing mechanism according to the set pressure, so that the conical sealing mechanism is tightly combined with the bottom flange 12; then, feed is added to the receiving box 2 until the material flow accumulates along the feed port to the bottom position of the guide channel 18; then, the cylinder 1 drives the piston 17 to move the connecting head 7 upward according to the set stroke, thereby driving the conical sealing mechanism to rise until the bottom of the conical sealing mechanism reaches the bottom position of the guide channel 18, and continuous feeding is realized at this time; when the feeding is about to end, the cylinder 1 drives the piston 17 to drive the connecting head 7 downward until the conical sealing mechanism is tightly combined with the bottom flange 12, waiting for the next feeding.

[0031] In specific application, the flange at the bottom of the cylinder 1 is bolted to the flange at the top of the receiving box 2. The piston 17 is connected to the connector 7 through a connecting nut 6, which is convenient for installation and disassembly.

[0032] The utility model controls the stroke of the cylinder 1 according to the set pressure value, thereby achieving dynamic and reliable sealing during the feeding process.

[0033] In order to ensure the sealing performance of the connection between the material receiving box 2 and the bottom flange 12 in this embodiment, a second O-ring 11 is further provided between the material receiving box 2 and the bottom flange 12 . Embodiment 2

[0034] according to Figure 1 The RH alloy feeding device with a dynamic feeding sealing mechanism shown in the figure is different from the embodiment 1 in that: the receiving box 2 is a hollow structure with a square top and a round bottom, and a discharge port is arranged at its bottom; the receiving box 2 includes a conical sealing mechanism moving bin, a feeding bin and a sleeve flange mechanism; the mobile bin and the feeding bin are connected; a feeding port is arranged on the feeding bin; the bottom of the conical sealing mechanism moving bin and the feeding bin are both connected to the bottom flange 12; the sleeve flange mechanism is horizontally connected to the upper side wall of the conical sealing mechanism moving bin and the guide channel 18, and one end of the sleeve flange mechanism is connected to the guide channel 18, and the end face of the sleeve flange mechanism is flush with the inner side wall of the guide channel 18, and the other end of the sleeve flange mechanism extends to the outside of the side wall of the receiving box 2; a conical sealing mechanism is arranged in the conical sealing mechanism moving bin.

[0035] In actual use, the guide channel 18 is an internal welded cylinder of the receiving box 2 .

[0036] When feeding is required, the cylinder 1 applies downward pressure to the conical sealing mechanism according to the set pressure, so that the conical sealing mechanism is tightly combined with the bottom flange 12; then, feed the material into the receiving box 2 through the feed port set on the feed bin, and the material flow accumulates along the feed port to the bottom position of the guide channel 18 to achieve the material sealing effect. Then, according to the set stroke, the cylinder 1 drives the piston 17 to drive the connector 7, thereby driving the conical sealing body 16 to rise to the bottom position of the guide channel 18, and continuous feeding is achieved at this time.

[0037] The sleeve flange mechanism is adopted to ensure that the signal line is in a sealed state. Embodiment 3

[0038] according to Figure 1 , Figure 2 and Figure 5The RH alloy feeding device with a dynamic feeding sealing mechanism shown in the figure is different from the second embodiment in that: the sleeve flange mechanism includes a sleeve flange joint 3, a sealing plate 4, a first O-ring 5 and a sleeve flange; one end of the sleeve flange is connected to the guide channel 18, and the end face of the end is flush with the inner wall of the guide channel 18; the other end of the sleeve flange mechanism extends to the outside of the side wall of the conical sealing mechanism moving bin, and a sealing plate 4 is connected to the end face of the end, and a first O-ring 5 is provided at the connection between the sealing plate 4 and the sleeve flange; the sealing plate 4 is connected to the sleeve flange joint 3.

[0039] Furthermore, the sleeve flange joint 3 includes a screw plug 301, a distance ring 302, a nut 303, a sealing ring 304 and a third O-ring 305; one end of the nut 303 is placed outside the sealing plate 4, and the other end thereof is horizontally placed inside the sealing plate 4 and is connected to the sleeve flange; a third O-ring 305 is provided at the junction between the nut 303 and the surface of the sealing plate 4; the screw plug 301 is threadedly connected inside the nut 303; the distance ring 302 is placed inside the nut 303 and at the bottom of the screw plug 301; a sealing ring 304 is provided between the distance ring 302 and the inner wall of the nut 303.

[0040] Furthermore, the nut 303 is an integrated structure consisting of an upper circular ring 3031 and a lower circular ring 3032; threads are provided on the inner wall of the upper circular ring 3031 and the outer wall of the lower circular ring 3032. The outer diameter of the upper circular ring 3031 is larger than the outer diameter of the lower circular ring 3032; the inner diameter of the upper circular ring 3031 is larger than the inner diameter of the lower circular ring 3032; the inner diameter of the upper circular ring 3031 and the lower circular ring 3032 is smoothly inclined, and the inclination thereof matches the bottom structure of the sealing ring 304.

[0041] Furthermore, the sealing plate 4 is an RF type flange; a first O-ring 5 is provided between the sealing plate 4 and the sleeve flange.

[0042] In actual use, the casing flange joint 3 is threadedly connected to the sealing plate 4, and the two are sealed by the third O-ring 305. The sealing plate 4 is bolted to the casing flange, and the two are sealed by the first O-ring 5. The signal line of the pressure sensor 10 is gathered through the casing flange of the receiving box 2 and introduced into the control system.

[0043] The sealing ring 304 is placed in the nut 303, and the screw plug 301 is threadedly connected with the nut 303 to compress the distance ring 302, so that the sealing ring 304 is slightly deformed, the inner hole is tightened, and a sealing effect is formed with the signal line; the screw plug 301 is threadedly connected with the sealing plate 4 for easy disassembly. Embodiment 4

[0044] According to the RH alloy feeding device with a dynamic feeding sealing mechanism shown in the figure, the difference from the first embodiment is that the guide channel 18 is annular, and its top is fixedly connected to the top surface of the receiving box 2.

[0045] In actual use, the setting of the guide channel 18 ensures that the conical sealing mechanism can move up and down along a preset vertical direction, thereby ensuring the stability of the feeding of the utility model and effectively extending the service life. Embodiment 5

[0046] according to Figure 1 and Figure 4 The RH alloy feeding device with a dynamic feeding sealing mechanism shown in the figure is different from the embodiment 1 in that: the conical sealing mechanism includes a spherical bearing 8, a bearing seat 9, a pressure sensor 10, a sealing body plate 15 and a conical sealing body 16; the conical sealing body 16 is a bell-mouth structure, with an open top and a pipe flange 19 at the bottom, a pressure plate 14 is connected to the bottom surface of the pipe flange 19, and a sealing ring 13 is arranged between the pressure plate 14 and the pipe flange 19; the bottom of the outer side of the sealing ring 13 is a conical surface corresponding to the inner ring of the bottom flange 12; the sealing body plate 15 is horizontally fixedly connected to the bottom side wall inside the conical sealing body 16; a plurality of pressure sensors 10 are connected between the bearing seat 9 and the sealing body plate 15; the connector 7 is assembled on the bearing seat 9 through the spherical bearing 8; the conical sealing body 16 can move up and down in the guide channel 18.

[0047] In actual use, the cylinder 1 and the conical sealing body 16 are connected by a spherical bearing 8 to achieve the best sealing effect, which not only increases the service life of the sealing ring, but also ensures the airtightness of each link in the feeding process and reduces the impact of leakage points on the load of the vacuum system.

[0048] The conical sealing body 16 adopts a conical structure with a large upper portion and a small lower portion, which can effectively reduce material pressure and play a better guiding role.

[0049] The sealing body plate 15 is horizontally fixedly connected to the inner wall of the conical sealing body, thereby enhancing the pressure bearing capacity of the conical sealing mechanism.

[0050] The designed cross-section of the sealing ring 13 effectively prolongs its expected service life while satisfying the expected sealing effect.

[0051] In this embodiment, three pressure sensors 10 are provided, which can satisfy the pressure monitoring requirement and reduce the cost. Embodiment 6

[0052] according to Figure 1The RH alloy feeding device with a dynamic feeding sealing mechanism shown is different from the first embodiment in that: the bottom flange 12 has a conical surface that is larger at the top and smaller at the bottom; the height of the guide channel 18 is greater than the height of the conical sealing mechanism and less than the height of the receiving box 2.

[0053] In actual use, the bottom flange 12 adopts the above technical solution to ensure the stability and sealing performance of the bottom flange 12 when it contacts the lower part of the conical sealing mechanism.

[0054] The conical surface of the bottom flange 12 in this embodiment is a machined surface, which can be easily repaired or replaced after being worn out by the scouring of the material flow. Embodiment 7

[0055] Reference Figure 1-Figure 5 A feeding method of an RH alloy feeding device with a dynamic feeding sealing mechanism comprises the following steps:

[0056] In the first step, the cylinder 1 applies downward pressure to the conical sealing mechanism according to the set pressure, so that the conical sealing mechanism is tightly combined with the bottom flange 12;

[0057] Step 2: Add material to the receiving box 2 until the material flow accumulates along the feed inlet to a position higher than the bottom of the guide channel 18, thereby achieving a material sealing effect;

[0058] Step 3: According to the set stroke, the cylinder 1 drives the piston 17 to drive the connector 7 to move upward, thereby driving the conical sealing mechanism to rise until the bottom of the conical sealing mechanism reaches the bottom position of the guide channel 18, at which time continuous feeding is achieved;

[0059] Step 4: When the feeding is about to be finished, the cylinder 1 drives the piston 17 to drive the connector 7 downward until the conical sealing mechanism is tightly combined with the bottom flange 12, and the material is added again to a position higher than the bottom of the guide channel 18, waiting for the next feeding.

[0060] The utility model controls the stroke of the cylinder 1 according to the set value of the pressure sensor in the conical sealing mechanism, thereby achieving dynamic and reliable sealing during the feeding process. In the utility model, the cylinder and the sealing body are connected by a joint bearing, so that the sealing effect is optimized, which not only increases the service life of the sealing ring, but also ensures the airtightness of each link in the feeding process, and reduces the influence of the leakage point on the load of the vacuum system.

[0061] In the absence of conflicts, technicians in this field can combine the relevant technical features in the above examples according to actual conditions to achieve corresponding technical effects. The specific combinations are not described here one by one.

[0062] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0063] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0064] The above is only a preferred embodiment of the utility model. The utility model will not be limited to these embodiments shown in this article, but should conform to the widest range consistent with the principles and novel features disclosed in this article. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model still fall within the scope of the technical solution of the utility model.

Claims

1. An RH alloy feeding device with a dynamic feeding sealing mechanism, characterized in that: The invention comprises a cylinder (1), a material receiving box (2), a connector (7), a guide channel (18), a conical sealing mechanism and a bottom flange (12); the cylinder (1) is vertically connected to the upper surface of the top of the material receiving box (2); the piston (17) of the cylinder (1) passes through the upper surface of the material receiving box (2) and extends into the material receiving box (2), and is connected to the conical sealing mechanism through the connector (7); the guide channel (18) is fixedly connected to the inner top surface of the material receiving box (2); the conical sealing mechanism is placed in the guide channel (18) and can move up and down along the inner side wall of the guide channel (18); the bottom flange (12) is sealingly connected to the discharge port at the bottom of the material receiving box (2).

2. The RH alloy feeding device with a dynamic feeding sealing mechanism as claimed in claim 1, characterized in that: The receiving box (2) is a hollow structure with a square top and a round bottom, and a discharge port is arranged at its bottom; the receiving box (2) comprises a conical sealing mechanism moving bin, a feeding bin and a sleeve flange mechanism; the moving bin and the feeding bin are connected; the feeding port is arranged on the feeding bin; the bottoms of the conical sealing mechanism moving bin and the feeding bin are both connected to the bottom flange (12); the sleeve flange mechanism is horizontally connected to the upper side wall of the conical sealing mechanism moving bin and the guide channel (18), and one end of the sleeve flange mechanism is connected to the guide channel (18), and the end face of the sleeve flange mechanism is flush with the inner side wall of the guide channel (18), and the other end of the sleeve flange mechanism extends to the outside of the side wall of the receiving box (2); a conical sealing mechanism is arranged in the conical sealing mechanism moving bin.

3. The RH alloy feeding device with a dynamic feeding sealing mechanism as claimed in claim 2, characterized in that: The sleeve flange mechanism comprises a sleeve flange joint (3), a sealing plate (4), a first O-ring (5) and a sleeve flange; one end of the sleeve flange is connected to the guide channel (18), and the end face of the end is flush with the inner wall of the guide channel (18); the other end of the sleeve flange mechanism extends to the outside of the side wall of the conical sealing mechanism moving bin, and the end face of the end is connected to the sealing plate (4), and the first O-ring (5) is provided at the connection between the sealing plate (4) and the sleeve flange; the sealing plate (4) is connected to the sleeve flange joint (3).

4. The RH alloy feeding device with a dynamic feeding sealing mechanism as claimed in claim 3, characterized in that: The casing flange joint (3) comprises a screw plug (301), a distance ring (302), a nut (303), a sealing ring (304) and a third O-ring (305); one end of the nut (303) is placed outside the sealing plate (4), and the other end is placed horizontally inside the sealing plate (4) and communicates with the casing flange; a third O-ring (305) is provided at the junction between the nut (303) and the surface of the sealing plate (4); the screw plug (301) is threadedly connected inside the nut (303); the distance ring (302) is placed inside the nut (303) and at the bottom of the screw plug (301); and a sealing ring (304) is provided between the distance ring (302) and the inner wall of the nut (303).

5. The RH alloy feeding device with a dynamic feeding sealing mechanism as claimed in claim 4, characterized in that: The nut (303) is an integral structure consisting of an upper circular ring (3031) and a lower circular ring (3032); threads are provided on the inner wall of the upper circular ring (3031) and the outer wall of the lower circular ring (3032).

6. The RH alloy feeding device with a dynamic feeding sealing mechanism as claimed in claim 3 or 4, characterized in that: The sealing plate (4) is an RF type flange; a first O-type sealing ring (5) is provided between the sealing plate (4) and the sleeve flange.

7. The RH alloy feeding device with a dynamic feeding sealing mechanism as claimed in claim 1, characterized in that: The guide channel (18) is in the shape of a ring, and its top is fixedly connected to the inner top surface of the material receiving box (2).

8. The RH alloy feeding device with a dynamic feeding sealing mechanism as claimed in claim 1, characterized in that: The conical sealing mechanism comprises a spherical bearing (8), a bearing seat (9), a pressure sensor (10), a sealing body plate (15) and a conical sealing body (16); the conical sealing body (16) is a bell-mouth structure, with an open top and a pipe flange (19) arranged at the bottom, a pressure plate (14) connected to the bottom surface of the pipe flange (19), and a sealing ring (13) arranged between the pressure plate (14) and the pipe flange (19); the bottom of the outer side of the sealing ring (13) is a conical surface corresponding to the inner ring of the bottom flange (12); the sealing body plate (15) is horizontally fixedly connected to the bottom side wall of the conical sealing body (16); a plurality of pressure sensors (10) are connected between the bearing seat (9) and the sealing body plate (15); the connector (7) is assembled on the bearing seat (9) through the spherical bearing (8); and the conical sealing body (16) can move up and down in the guide channel (18).

9. The RH alloy feeding device with a dynamic feeding sealing mechanism as claimed in claim 1, characterized in that: The bottom flange (12) has a conical surface that is larger at the top and smaller at the bottom. The height of the guide channel (18) is greater than the height of the conical sealing mechanism and less than the height of the receiving box (2).

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