Vacuum feeding bin for feeding of experimental vacuum melting furnace
By designing a vacuum feeding chamber with a double-layer feeding pipe and components, the problems of air mixing and heat loss in the vacuum furnace were solved, achieving non-continuous, anti-clogging, and safe feeding, and improving the feeding quality and efficiency of the experimental vacuum furnace.
Patent Information
- Application Number
- CN202422728960.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-09
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-09
AI Technical Summary
Existing vacuum feeders are not suitable for vacuum furnaces with small experimental volumes. They are prone to air mixing, which affects the melting quality and causes heat loss. Existing equipment is difficult to achieve a non-continuous, anti-clogging, and safe preheating feeding method.
A vacuum feeding chamber for an experimental vacuum furnace was designed, which adopts components such as a double-layer feeding pipe, a vacuum gate valve, a compartment door, and a tilting door. Through segmented preheating and sealing design, air mixing and heat loss are prevented, and a non-continuous, anti-clogging feeding process is achieved.
It effectively avoids air mixing and heat loss caused by feeding in vacuum melting furnaces, and provides a safe and preheatable non-continuous feeding method, ensuring the reliability and accuracy of feeding.
Smart Images
Figure CN223500110U_ABST
Abstract
Description
[Technical Field]
[0001] This utility model relates to the field of feeding equipment technology, specifically a vacuum feeding device. [Background Technology]
[0002] The experimental vacuum furnace is characterized by a small crucible capacity and a small amount of material added each time. Ordinary open-lid feeding inevitably introduces air, which seriously affects the melting quality. Existing vacuum feeders are generally continuous feeders, which are not suitable for feeding experimental vacuum furnaces with small amounts of material. Therefore, there is an urgent need to develop a feeding port that is not easy to clog, does not affect the vacuum degree of the furnace, and is convenient for manual feeding as needed. [Utility Model Content]
[0003] To achieve the above objectives, the technical solution adopted by the present invention is as follows:
[0004] A vacuum charging chamber for feeding an experimental vacuum furnace includes a double-layer charging pipe, a vacuum gate valve and its mounting assembly, a partition door and its mounting drive assembly, and a tilting door and its mounting drive assembly. The double-layer charging pipe has corresponding openings for the vacuum gate valve, the partition door, and the tilting door to enter and exit its chamber. The vacuum gate valve, the partition door, and the tilting door together divide the double-layer charging pipe into an insulation chamber, a transition chamber, a preheating chamber, and a furnace entry chamber. The vacuum gate valve and the partition door are driven horizontally in and out of the double-layer charging pipe by their respective drive assemblies, ensuring that the added magnesium ingots are preheated in stages when entering the vacuum furnace, thus minimizing the risk of air mixing and heat loss during charging.
[0005] The vacuum gate valve and its mounting assembly, as well as the tilting door and its mounting drive assembly, are all fixed to the double-layer feeding pipe or the nearby vacuum furnace body through their respective mounting assemblies. Furthermore, their installation must ensure the sealing and heat insulation of the double-layer feeding pipe. The vacuum gate valve serves to insulate heat and prevent air from entering the operation. An intermediate chamber is added between the heat insulation chamber and the preheating chamber to enhance the heat insulation and prevent air from entering the operation.
[0006] The tilting door and its installation drive assembly consist of a tilting door mounting frame, a swing cylinder, a rotating shaft system, an in-chamber tilting door, and a pair of limit switches. The rotating shaft system consists of a bearing seat, a pressing end cover, a bearing, and a rotating shaft. The in-chamber tilting door is mounted on the rotating shaft of the rotating shaft system. The swing cylinder provides power to drive the rotating shaft system to rotate, thereby causing the in-chamber tilting door to rotate 90° to open or close the feeding pipe channel. The pair of limit switches are fixed in a cross shape through the tilting door mounting assembly and are used to detect and receive the tilting position signal of the in-chamber tilting door. Preferably, the circumferential dimension of the in-chamber tilting door is 5-10 mm smaller than the inner diameter of the double-layer feeding pipe.
[0007] The double-layer feeding pipe is sealed and fixed to the vacuum furnace cover by the feeding hopper mounting flange. The double-layer feeding pipe also has a vacuum ball valve mounting hole, a protective gas ball valve mounting hole, and an observation hole for connecting the vacuum system and the protective gas circuit system. The observation hole is used to observe the feeding hopper. The furnace inlet hopper that extends into the vacuum furnace cover plays the role of guiding and accurately feeding materials.
[0008] Compared with the existing feeders for vacuum furnaces, this new utility model has the following advantages:
[0009] 1. It avoids the air mixing and heat loss caused by adding materials to a vacuum melting furnace.
[0010] 2. Specifically designed for use in experimental vacuum furnaces, this product provides a non-continuous, clog-proof, safe, and preheatable feeding method and device. [Attached Image Description]
[0011] Figure 1 This is the front view of this utility model.
[0012] Figure 2 This is a schematic diagram of the installation of the vacuum gate valve in direction A.
[0013] Figure 3 This is a schematic diagram of the installation of the compartment door in direction B.
[0014] Figure 4 This is a schematic diagram of a C-shaped flip door structure.
[0015] Figure 5 This is the left view of this utility model.
[0016] In the diagram: 1. Charging hopper handle; 2. Charging pipe; 3. Vacuum ball valve mounting hole; 4. Insulation chamber; 5. Vacuum gate valve; 6. Vacuum gate valve; 7. Isolation chamber door and its mounting drive assembly; 8. Isolation chamber door; 9. Preheating chamber; 10. Transition chamber; 11. Tilting door and its mounting drive assembly; 12. Inner tilting door; 13. Charging hopper mounting flange; 14. Furnace inlet chamber; 15. Insulation door mounting assembly; 16. Protective gas ball valve mounting hole; 17. Tilting door mounting frame; 18. Limit switch ×2; 19. Rotating shaft system; 20. Observation hole; 21. Bearing seat; 22. Swing cylinder; 23. Clamping end cover; 24. Bearing; 25. Rotating shaft; 26. Vacuum furnace cover.
Detailed Implementation Methods
[0017] The present invention will be further described below with reference to the accompanying drawings.
[0018] The accompanying drawings are simplified versions of embodiments of the present invention and are intended only to clearly and concisely illustrate the embodiments of the present invention. The technical solutions shown in the drawings below are specific embodiments of the present invention and are not intended to limit the scope of the claimed invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0019] In the description of this utility model, the terms "design," "fixed," and "connection" should be used in a broad sense. For example, they can refer to fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections through an intermediate medium, and internal connections between components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0020] As attached Figure 1-5 As shown, the vacuum charging chamber for the experimental vacuum furnace includes a double-layer charging pipe 2, a vacuum gate valve and its installation assembly 6, a partition door and its installation drive assembly 7, and a tilting door and its installation drive assembly 11. The double-layer charging pipe 2 has corresponding openings for the vacuum gate valve valve 5, the partition door 8, and the tilting door 12 to enter and exit its chamber. The vacuum gate valve valve 5, the partition door 8, and the tilting door 12 together divide the double-layer charging pipe 2 into an insulation chamber 4, a transition chamber 10, a preheating chamber 9, and a furnace entry chamber 14. The vacuum gate valve valve 5 and the partition door 8 are driven horizontally in and out of the double-layer charging pipe 2 by their respective drive assemblies, ensuring that the magnesium ingots are preheated in stages when entering the vacuum furnace, and minimizing the risk of heat loss due to air mixing during charging.
[0021] As attached Figure 2 As shown, the vacuum gate valve and its mounting assembly 6 and the tilting door and its mounting drive assembly 11 are all fixed to the double-layer feeding pipe 2 or the nearby vacuum furnace body through their respective mounting assemblies. Moreover, their installation must ensure the sealing and heat insulation of the double-layer feeding pipe 2. The vacuum gate valve is used for heat insulation and to prevent air from mixing in. An intermediate chamber 10 is added between the heat insulation chamber 4 and the preheating chamber 9 to enhance the heat insulation and prevent air from mixing in.
[0022] As attached Figure 3-5As shown, the tilting door and its installation drive assembly 11 consist of a tilting door mounting frame 17, a swing cylinder 22, a rotating shaft system 19, an in-chamber tilting door 12, and a pair of limit switches 18. The rotating shaft system 19 consists of a bearing seat 21, a pressing end cover 23, a bearing 24, and a rotating shaft 25. The in-chamber tilting door 12 is mounted on the rotating shaft 25 of the rotating shaft system. The swing cylinder 22 provides power to drive the rotating shaft system to rotate, thereby causing the in-chamber tilting door 12 to rotate 90° to open or close the feeding pipe channel. The pair of limit switches 18 are fixed in a cross shape through the tilting door installation drive assembly 11 and are used to detect and receive the tilting position signal of the in-chamber tilting door 12. Preferably, the circumferential dimension of the in-chamber tilting door 12 is 5-10 mm smaller than the inner diameter of the double-layer feeding pipe 2.
[0023] As attached Figure 1 and attached Figure 5 As shown, the double-layer feeding pipe 2 is sealed and fixed to the vacuum furnace cover 26 through the feeding bin mounting flange 13. The double-layer feeding pipe 2 is also provided with a vacuum ball valve mounting hole 3, a protective gas ball valve mounting hole 16 and an observation hole 20, which are used to connect the vacuum system and the protective gas circuit system. The observation hole 20 is used to observe the feeding bin. The furnace inlet 14 that extends into the vacuum furnace cover 26 plays the role of guiding and accurately feeding materials.
[0024] The working process of this utility model is as follows: The feeding bin is installed on the sealing cover of the vacuum furnace. First, a vacuum is drawn, and then protective gas is introduced, maintaining the set vacuum level and protective gas flow rate. When the system sends a signal that feeding is required, the feeding bin handle 1 is manually turned open, and the alloy ingot is vertically placed into the heat insulation bin 4 to the set block. Then, the feeding bin handle 1 is turned in the opposite direction, and the controller sends a signal to open the vacuum gate valve 5 and the partition door 8 horizontally. The alloy ingot then slides into the preheating bin 9, and the vacuum gate valve 5 and the partition door 8 are then horizontally closed. After the alloy ingot stays in the preheating bin for the set preheating time, the flip door 12 is rotated 90° clockwise under the action of the flip cylinder. The alloy ingot passes through the furnace inlet bin 14 and enters the vacuum furnace crucible. Then, the flip door rotates 90° counterclockwise to close the feeding bin, completing one feeding cycle.
[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A vacuum feeding chamber for feeding an experimental vacuum furnace, characterized in that, The vacuum feeding chamber includes a double-layer feeding pipe (2), a vacuum gate valve and its installation assembly (6), a partition door and its installation drive assembly (7), and a tilting door and its installation drive assembly (11). The double-layer feeding pipe (2) has corresponding openings for the valve (5) of the vacuum gate valve, the partition door (8), and the tilting door (12) to enter and exit its chamber. The valve (5), the partition door (8), and the tilting door (12) of the vacuum gate valve together divide the double-layer feeding pipe (2) into an insulation chamber (4), a transition chamber (10), a preheating chamber (9), and a furnace entry chamber (14). The valve (5) and the partition door (8) of the vacuum gate valve are driven horizontally into and out of the double-layer feeding pipe (2) by their respective drive assemblies.
2. The vacuum feeding chamber for feeding the experimental vacuum furnace according to claim 1, characterized in that, The vacuum gate valve and its mounting assembly (6) and the tilting door and its mounting drive assembly (11) are all fixed to the double-layer feeding pipe (2) or the nearby vacuum furnace body through their respective mounting assemblies, and their installation must ensure the sealing and heat insulation of the double-layer feeding pipe (2).
3. The vacuum feeding chamber for feeding the experimental vacuum furnace according to claim 1, characterized in that, The flip door and its installation drive assembly (11) consist of a flip door mounting frame (17), a swing cylinder (22), a rotating shaft system (19), an in-chamber flip door (12), and a pair of limit switches (18). The rotating shaft system (19) consists of a bearing seat (21), a pressing end cover (23), a bearing (24), and a rotating shaft (25). The in-chamber flip door (12) is mounted on the rotating shaft (25) of the rotating shaft system. The swing cylinder (22) provides power to drive the rotating shaft system to rotate, thereby driving the in-chamber flip door (12) to rotate 90° to open or close the feeding pipe channel. The pair of limit switches (18) are fixed in a cross shape through the flip door and its installation drive assembly (11) and are used to detect and receive the flip position signal of the in-chamber flip door (12).
4. The vacuum feeding chamber for feeding the experimental vacuum furnace according to claim 1, characterized in that, The double-layer feeding pipe (2) is sealed and fixed on the vacuum furnace cover (26) through the feeding hopper mounting flange (13). The double-layer feeding pipe (2) also has a vacuum ball valve mounting hole (3), a protective gas ball valve mounting hole (16) and an observation hole (20) for connecting the vacuum system and the protective gas circuit system. The observation hole (20) is used to observe the feeding hopper.