Vertical feeding device capable of ensuring vacuum state

By designing a vertical feeding device with a sealing ring and a top disk movement mechanism, the problem of the vacuum state being destroyed during the feeding process of the electron beam smelting furnace is solved, and more efficient switching of feed and sealing structure is achieved, ensuring the maintenance of the vacuum state.

CN222887496UActive Publication Date: 2025-05-20JIANGSU RONGYAO NEW MATERIAL CO LTD
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Patent Information

Application Number
CN202421418402.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-20
Publication Date
2025-05-20
Estimated Expiration
2034-06-20

AI Technical Summary

Technical Problem

The existing electron beam smelting furnaces need to switch the feeding device and sealing structure multiple times during the feeding process, resulting in a long time of destruction of the vacuum state and a difficult subsequent recovery of the vacuum state.

Method used

A vertical feeding device including a sealing sleeve, an upper feeding barrel, a top disk and a sealing ring is designed. The position of the sealing ring is changed through the movement of the top disk, and the switching of the feed and sealing structure is completed simultaneously to ensure the maintenance of the vacuum state.

Benefits of technology

The feeding process time is shortened, the vacuum state is destroyed is reduced, the difficulty of subsequent vacuum state recovery is increased, and the vacuum state inside the crucible is ensured.

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Abstract

The utility model relates to the technical field of crucible feeding, in particular to a vertical feeding device capable of ensuring a vacuum state, which comprises a sealing sleeve, an upper feeding cylinder and a top tray, the sealing sleeve is detachably sleeved on a crucible body, and side grooves are arranged on the left side and the right side of the peripheral side wall of the upper feeding cylinder. Side communicating frames are arranged at the positions, matched with the side grooves, of the peripheral side wall of the upper feeding cylinder, the bottom end of the top disc is connected with a discharging flow guide cover through a vertical feeding pipe, and inclined rods are rotationally arranged at the symmetrical positions of the bottom end of the top disc. The top disc moves to drive the vertical feeding pipe to enter or leave the upper feeding cylinder so as to complete feeding or leaving, the position change of the sealing ring is completed synchronously through the movement of the top disc, namely, the opening or closing of the feeding channel of the upper feeding cylinder is completed, so that the movement of the feeding device and the switching of a sealing structure are synchronously carried out, and the working efficiency is improved. And the time of the actual feeding process is shortened, namely the time for damaging the sealed vacuum state in the crucible body is shortened.
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Description

Technical Field

[0001] The utility model relates to the technical field of crucible feeding, and particularly relates to a vertical feeding device capable of ensuring a vacuum state. Background Art

[0002] Electron beam melting refers to a vacuum melting method in which the kinetic energy of a high-speed electron beam is converted into heat energy and used as a heat source for metal melting under high vacuum. The melting furnace is a device that melts metal ingots and some waste metals and adds necessary alloy components, and melts them into the required alloy through operations such as slag skimming and refining. Melting is generally carried out in an electron beam melting furnace, specifically in a crucible inside the electron beam melting furnace. The crucible generally has an open upper end to facilitate feeding and discharging.

[0003] Since the crucible generally has an open upper end and is generally placed upright in the electron beam melting furnace, in most cases, the vertical feeding method is used to complete the feeding operation. And the electron beam melting furnace needs to ensure a sealed vacuum state during the melting process. Therefore, during the feeding process, the sealing structure needs to be opened, and then the feeding operation is completed through the feeding device. Subsequently, the feeding device is withdrawn and the sealing structure is immediately closed. Such a feeding process requires multiple state switches of the feeding device and the sealing structure, increasing the required steps and the required time, resulting in a longer time for the vacuum state in the melting furnace to be damaged, and it is more difficult to ensure the recovery of the vacuum state subsequently.

[0004] Therefore, it is very necessary to invent a vertical feeding device capable of ensuring a vacuum state to solve the above problems. Summary of the Utility Model

[0005] To solve the deficiencies of the prior art, the purpose of the present utility model is to provide a vertical feeding device capable of ensuring a vacuum state, which solves the problems in the prior art that the feeding process requires multiple state switches of the feeding device and the sealing structure, increasing the required steps and the required time, resulting in a longer time for the vacuum state in the melting furnace to be damaged, and it is more difficult to ensure the recovery of the vacuum state subsequently.

[0006] To achieve the above objectives, the present utility model adopts the following technical solutions:

[0007] A vertical feeding device capable of ensuring a vacuum state, comprising a sealed sleeve, an upper feeding cylinder extending above the sealed sleeve, and a top plate longitudinally slidably arranged. The sealed sleeve is detachably sleeved on the crucible body. Side grooves are formed on the left and right sides of the peripheral side wall of the upper feeding cylinder. Side communication frames are arranged at positions of the peripheral side wall of the upper feeding cylinder adapted to each side groove. A feeding diversion cover is installed at a position of the top end of the top plate adapted to a circular hole. The bottom end of the top plate is connected with a discharge diversion cover through a vertical feeding pipe. Oblique rods are rotatably arranged at symmetrical positions at the bottom end of the top plate. The other ends of the oblique rods are rotatably provided with sealing frames capable of horizontally sliding along the side communication frames. Sealing rings with the same inner diameter as the inner diameter of the upper feeding cylinder are connected to the sides of the sealing frames close to the center of the upper feeding cylinder. A sealing clamping ring is clamped on the peripheral side wall of the vertical feeding pipe;

[0008] When the top plate moves upward, the oblique rods pull the sealing frames and drive the sealing rings to move from the side communication frames into the upper feeding cylinder. When the feeding diversion cover moves upward to the maximum stroke, the sealing rings completely move into the upper feeding cylinder, the sealing frames are sleeved on the side communication frames, and the top surface of the sealing clamping ring is flush with the top surface of the upper feeding cylinder.

[0009] As a preferred solution of the present invention, a plurality of convex rings are arranged on the peripheral side wall of the sealed sleeve, and sealing rings are detachably embedded in the convex rings.

[0010] As a preferred solution of the present invention, the inner diameter of the cross section of the sealing frame is the same as the outer diameter of the cross section of the side communication frame, and one side of the sealing ring close to the sealing frame is detachably connected with the side wall of the sealing frame through a connecting rod.

[0011] As a preferred solution of the present invention, the sealing clamping ring is clamped on one side of the vertical feeding pipe close to the discharge diversion cover, and a circular hole with the same inner diameter as the inner diameter of the vertical feeding pipe is formed in the center of the top plate.

[0012] As a preferred solution of the present invention, a positioning collar capable of fixing the sleeved position of the sealed sleeve is detachably clamped on the peripheral side wall of the crucible body.

[0013] As a preferred solution of the present invention, upper clamping seats are arranged at symmetrical positions at the bottom end of the top plate, lower clamping seats are arranged on the top surfaces of the two sealing frames, the top ends of the oblique rods are rotatably connected with the upper clamping seats, and the bottom ends of the oblique rods are rotatably connected with the lower clamping seats.

[0014] In the above technical solution, the technical effects and advantages provided by the present invention:

[0015] In the present utility model, during the feeding process, as the top plate moves downward, through the pulling effect of two inclined rods, two sealing rings slide from the upper feeding cylinder into the side communication frame respectively. When the top plate pushes the vertical feeding pipe and the discharge guiding cover into the upper feeding cylinder, the downward movement of the top plate drives the two sealing rings to synchronously open the feeding channel of the upper feeding cylinder. Subsequently, when the vertical feeding pipe and the discharge guiding cover enter the upper feeding cylinder and complete the vertical feeding of the crucible body, when withdrawing the vertical feeding pipe and the discharge guiding cover after the feeding is completed, during the upward movement of the top plate, through the pulling effect of the two inclined rods, the two sealing rings slide from the side communication frame into the upper feeding cylinder respectively. Finally, when the top plate moves upward to the maximum stroke, the two sealing rings completely enter the upper feeding cylinder, overlapping in two layers to seal the feeding channel of the upper feeding cylinder. At the same time, the top surface of the sealing clamping ring is flush with the top surface of the upper feeding cylinder to seal the upper opening of the upper feeding cylinder. In the present utility model, the vertical feeding pipe is driven to enter or leave the upper feeding cylinder by the movement of the top plate to complete feeding or leaving, and simultaneously, the position change of the sealing ring is completed by the movement of the top plate, that is, the opening or closing of the feeding channel of the upper feeding cylinder is completed, so that the movement of the feeding device and the switching of the sealing structure are carried out synchronously, shortening the time of the actual feeding process, that is, reducing the time when the sealed vacuum state inside the crucible body is damaged. When the feeding device is in the state of leaving the upper feeding cylinder, the two layers overlap to seal the internal feeding channel of the upper feeding cylinder, and the top surface of the sealing clamping ring is flush with the top surface of the upper feeding cylinder to seal the upper opening of the upper feeding cylinder. Sealing treatments are carried out at multiple places to ensure the vacuum state inside the crucible body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic front view structure diagram of the present utility model;

[0018] Figure 3 is a schematic top view structure diagram of the present utility model;

[0019] Figure 4 is the present utility model Figure 3 the sectional structure diagram at A-A in.

[0020] Description of the reference numerals:

[0021] 1, crucible body; 2, sealing sleeve; 3, positioning collar; 4, convex ring; 5, sealing ring; 6, upper feeding cylinder; 7, side groove; 8, side communication frame; 9, top plate; 10, feeding guiding cover; 11, vertical feeding pipe; 12, discharge guiding cover; 13, sealing clamping ring; 14, upper clamping seat; 15, inclined rod; 16, lower clamping seat; 17, sealing frame; 18, connecting rod; 19, sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and cannot be used to limit the protection scope of the present utility model.

[0023] The present utility model provides a vertical feeding device capable of ensuring a vacuum state as shown in Figures 1-4 Figure 7, which includes a sealed sleeve 2, an upper feeding cylinder 6 extending above the sealed sleeve 2, and a top plate 9 slidably arranged longitudinally. The sealed sleeve 2 is detachably sleeved on the crucible body 1. Side grooves 7 are provided on both the left and right sides of the peripheral side wall of the upper feeding cylinder 6. Side communication frames 8 are provided at positions on the peripheral side wall of the upper feeding cylinder 6 that are adapted to each side groove 7. The bottom end of the top plate 9 is connected with a discharge guide cover 12 through a vertical feeding pipe 11. Diagonal rods 15 are rotatably arranged at symmetric positions at the bottom end of the top plate 9. The other ends of the diagonal rods 15 are rotatably provided with sealing frames 17 that can slide horizontally along the side communication frames 8. Sealing rings 19 with the same inner diameter as the inner diameter of the upper feeding cylinder 6 are connected to the sides of the sealing frames 17 close to the center of the upper feeding cylinder 6. A sealing clamping ring 13 is clamped on the peripheral side wall of the vertical feeding pipe 11. The crucible body 1 is placed in an electron beam melting furnace, and the top end of the upper feeding cylinder 6 is actually flush with the opening end of the electron beam melting furnace. For the longitudinal movement driving assembly of the top plate 9, it is not drawn in the figure and belongs to mature prior art;

[0024] When the top plate 9 moves upward, the diagonal rod 15 pulls the sealing frame 17 and drives the sealing ring 19 to move from the side communication frame 8 into the upper feeding cylinder 6. When the feeding guide cover 10 moves upward to the maximum stroke, the sealing ring 19 completely moves into the upper feeding cylinder 6, the sealing frame 17 is sleeved on the side communication frame 8, and the top surface of the sealing clamping ring 13 is flush with the top surface of the upper feeding cylinder 6.

[0025] A plurality of convex rings 4 are provided on the peripheral side wall of the sealed sleeve 2. Sealing rings 5 are detachably embedded in the convex rings 4. The sealed sleeve 2 is sleeved on the outer peripheral side wall of the crucible body 1 to complete the fixation between the sealed sleeve 2 and its upper structure and the crucible body 1, and the plurality of convex rings 4 and the sealing rings 5 can ensure the sealing at the sleeved position.

[0026] The inner diameter of the cross-section of the sealing frame 17 is the same as the outer diameter of the cross-section of the side communication frame 8. The side of the sealing ring 19 close to the sealing frame 17 is detachably connected to the side wall of the sealing frame 17 through a connecting rod 18. The sealing clamping ring 13 can ensure the sealing state of the opening end of the upper feeding cylinder 6.

[0027] The sealing clamping ring 13 is clamped on the side of the vertical feeding pipe 11 close to the discharge guide cover 12. A circular hole with the same inner diameter as the vertical feeding pipe 11 is provided at the center of the top plate 9. A feeding guide cover 10 is installed at the position on the top end of the top plate 9 that is adapted to the circular hole. The feeding guide cover 10 can facilitate the feeding of materials from the outside into the vertical feeding pipe 11, and the discharge guide cover 12 can prevent the discharge port of the vertical feeding pipe 11 from being blocked.

[0028] A positioning collar 3 for detachably clamping and connecting the side wall of the crucible body for one week is provided with a position where the fixed sealing sleeve 2 is sleeved. The bottom end of the sealing sleeve 2 abuts against the top end of the positioning collar 3, so as to lock the position of the sealing sleeve 2.

[0029] Upper clamping seats 14 are provided at symmetric positions at the bottom end of the top plate 9. Lower clamping seats 16 are provided on the top surfaces of the two sealing frames 17. The top end of the inclined rod 15 is rotatably connected to the upper clamping seat 14, and the bottom end of the inclined rod 15 is rotatably connected to the lower clamping seat 16.

[0030] In the present utility model, during the feeding process, by moving the top plate 9 downward, and then through the pulling action of the two inclined rods 15, the two sealing rings 19 slide from the upper feeding tube 6 into the side communication frame 8 respectively. When the top plate 9 pushes the vertical feeding tube 11 and the discharge guiding cover 12 into the upper feeding tube 6, through the downward pushing action of the top plate 9, the two sealing rings 19 are driven to synchronously open the feeding channel of the upper feeding tube 6. Subsequently, when the vertical feeding tube 11 and the discharge guiding cover 12 enter the upper feeding tube 6 and complete the vertical feeding of the crucible body 1, when the vertical feeding tube 11 and the discharge guiding cover 12 are withdrawn after the feeding is completed, during the upward movement of the top plate 9, through the pulling action of the two inclined rods 15, the two sealing rings 19 slide from the side communication frame 8 into the upper feeding tube 6 respectively. Finally, when the top plate 9 moves upward to the maximum stroke, the two sealing rings 19 completely enter the upper feeding tube 6 and overlap in an upper and lower layer to seal the feeding channel of the upper feeding tube 6. At the same time, the top surface of the sealing clamping ring 13 is flush with the top surface of the upper feeding tube 6 to seal the upper opening of the upper feeding tube 6. In the present utility model, by moving the top plate 9 to drive the vertical feeding tube 11 to enter or leave the upper feeding tube 6 to complete feeding or leaving, and simultaneously by moving the top plate 9 to complete the position change of the sealing ring 19, that is, to complete the opening or closing of the feeding channel of the upper feeding tube 6, the movement of the feeding device and the switching of the sealing structure are synchronized, shortening the time of the actual feeding process, that is, reducing the time when the sealed vacuum state in the crucible body 1 is damaged. And in the state where the feeding device leaves the upper feeding tube 6, the upper and lower layers overlap to seal the internal feeding channel of the upper feeding tube 6, and the top surface of the sealing clamping ring 13 is flush with the top surface of the upper feeding tube 6 to seal the upper opening of the upper feeding tube 6. Sealing treatment is carried out at multiple places to ensure the vacuum state inside the crucible body 1.

[0031] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present utility model.

Claims

1. A vertical feeding device capable of ensuring a vacuum state, characterized in that: The invention comprises a sealing sleeve (2), an upper feed tube (6) extending above the sealing sleeve (2), and a top plate (9) arranged to slide longitudinally, wherein the sealing sleeve (2) is detachably sleeved on the crucible body (1), side grooves (7) are provided on both sides of the side wall of the upper feed tube (6), and a side connecting frame (8) is provided at a position of the side wall of the upper feed tube (6) adapted to each side groove (7), a feed guide cover (10) is installed at a position of the circular hole adapted to the top of the top plate (9), and the top plate ( 9) The bottom end is connected to a discharge guide cover (12) through a vertical feed pipe (11), and inclined rods (15) are rotatably provided at symmetrical positions on the bottom end of the top plate (9), and a sealing frame (17) that can slide laterally along the side connecting frame (8) is rotatably provided at the other end of the inclined rod (15), and a sealing ring (19) that is consistent with the inner diameter of the upper feed barrel (6) is connected to the side of the sealing frame (17) close to the center of the upper feed barrel (6), and a sealing clamp ring (13) is clamped on the side wall of the vertical feed pipe (11); When the top plate (9) moves upward, the inclined rod (15) pulls the sealing frame (17) and drives the sealing ring (19) to move from the side connecting frame (8) to the upper feed barrel (6); when the feed guide cover (10) moves upward to the maximum stroke, the sealing ring (19) moves completely into the upper feed barrel (6), the sealing frame (17) is sleeved on the side connecting frame (8), and the top surface of the sealing clamp ring (13) is flush with the top surface of the upper feed barrel (6).

2. A vertical feeding device capable of ensuring a vacuum state according to claim 1, characterized in that: The sealing sleeve (2) is provided with a plurality of convex rings (4) on the peripheral side wall, and a sealing ring (5) is detachably embedded in the convex ring (4).

3. A vertical feeding device capable of ensuring a vacuum state according to claim 1, characterized in that: The inner diameter of the cross section of the sealing frame (17) is consistent with the outer diameter of the cross section of the side connecting frame (8), and the side of the sealing ring (19) close to the sealing frame (17) is detachably connected to the side wall of the sealing frame (17) via a connecting rod (18).

4. A vertical feeding device capable of ensuring a vacuum state according to claim 1, characterized in that: The sealing clamp ring (13) is clamped on a side of the vertical feed pipe (11) close to the discharge guide cover (12), and a circular hole having the same inner diameter as the vertical feed pipe (11) is opened in the center of the top plate (9).

5. A vertical feeding device capable of ensuring a vacuum state according to claim 1, characterized in that: The peripheral side wall of the crucible body (1) is detachably clamped with a positioning collar (3) which can fix the sleeve position of the sealing sleeve (2).

6. A vertical feeding device capable of ensuring a vacuum state according to claim 1, characterized in that: An upper clamping seat (14) is symmetrically provided at the bottom end of the top plate (9), and a lower clamping seat (16) is provided on the top surface of the two sealing frames (17). The top end of the inclined rod (15) is rotatably connected to the upper clamping seat (14), and the bottom end of the inclined rod (15) is rotatably connected to the lower clamping seat (16).