A secondary feeding device suitable for small-scale powder making equipment

Abstract

This utility model relates to the field of feeding technology, and in particular to a secondary feeding device suitable for small-scale powder making equipment. The feeding device includes: a rotating shaft body, one end of which is rotatably installed relative to the side wall of the furnace body, and the other end which horizontally penetrates the furnace body wall and is located in the inner cavity of the furnace body and is rotatably installed relative to the inner cavity of the furnace body; a hopper, which is fixedly installed relative to the rotating shaft body and located in the inner cavity of the furnace body; and a positioning part, which is fixedly installed relative to the rotating shaft body and cooperates with the furnace body to limit the rotation of the rotating shaft body to a specified angle, so as to prevent the rotating shaft body from rotating. This invention solves the technical problems of existing secondary feeding devices, which are generally complex in structure, difficult to disassemble and assemble, and susceptible to high temperature, resulting in a high failure rate.

Description

Technical Field

[0001] This utility model relates to the field of feeding technology, and in particular to a secondary feeding device suitable for small-scale powder making equipment. Background Technology

[0002] The descriptions in this section are provided only as background information relating to this disclosure and do not constitute prior art.

[0003] The secondary feeding device is one of the core functions of vacuum induction melting equipment. It is used to add alloying elements, deoxidizers, refining agents or other furnace materials to the molten main pool while maintaining a vacuum or protective atmosphere. Its setting method needs to comprehensively consider factors such as vacuum sealing and reliability. Conventional secondary feeding devices are usually installed on the furnace cover. The raw materials are delivered to the crucible by a motor-driven screw or lifting device and then released. It is required that there are no obstructions above the melting crucible to ensure that the raw materials can fall into the crucible smoothly. Moreover, conventional secondary feeding devices are composed of screws, motors, gate valves, water cooling devices and supports. They are costly and occupy a lot of space. They are only suitable for large-scale powder making equipment. For small-scale powder making equipment, the usable area of ​​the furnace cover is small, and the secondary feeding device in the existing technology is not suitable.

[0004] The prior art discloses a sealed rotary lifting feeding device, invention patent with announcement number CN113847815B, which discloses a feeding hopper, a sealing groove arranged at the upper end of the feeding hopper, the sealing groove containing liquid or grease, a rotating and lifting device located at the center of the feeding hopper, its conical structure located below the feeding hopper, which can block the lower end discharge port of the feeding hopper and drive the feeding hopper to be lifted or rotated together, an upper sealing element located above the feeding hopper, connected to the support frame by ropes, and equipped with a sealing ring corresponding to the sealing groove, a feeding gate arranged on the upper sealing element, the feeding gate being installed on the upper sealing element by hinges and connected to the support frame by ropes, and a lower sealing element set at the lower part of the feeding hopper, used for the docking and sealing of the lower end discharge port of the feeding hopper and the furnace feeding port. The related technologies, including the above technical solutions, still have many problems, such as: the secondary feeding device occupies a large space, is not suitable for installation on the furnace cover of small preparation equipment, and has a complex structure, is prone to failure under high temperature conditions, and is cumbersome to disassemble and maintain. Utility Model Content

[0005] The purpose of this utility model is to provide a secondary feeding device suitable for small-scale powder making equipment, which solves the technical problems of existing secondary feeding devices being complex in structure, difficult to disassemble and assemble, and susceptible to high temperature, resulting in a high failure rate.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A secondary feeding device suitable for small-scale powder making equipment, the feeding device comprising:

[0008] The rotating shaft body has one end rotatably installed relative to the side wall of the furnace body, and the other end horizontally penetrates the furnace body wall and is located in the inner cavity of the furnace body and rotatably installed relative to the inner cavity of the furnace body.

[0009] The hopper is fixedly installed relative to the main body of the rotating shaft and located in the inner cavity of the furnace body;

[0010] The positioning part is fixedly installed relative to the main body of the rotating shaft and cooperates with the furnace body to limit the rotation of the main body of the rotating shaft to a specified angle, so as to prevent the main body of the rotating shaft from rotating.

[0011] Furthermore, the rotating shaft body includes an active rotating shaft and a driven rotating shaft. The active rotating shaft and the driven rotating shaft are fixedly installed relative to each other and are not in direct contact. The active rotating shaft is located on the outside of the furnace body, and the driven rotating shaft is located on the inside of the furnace body.

[0012] Furthermore, the feeding device also includes a flange bushing that is fixedly installed relative to the furnace body, and a sealing flange sleeve is fixedly installed relative to the flange bushing. The active rotating shaft passes through the sealing flange sleeve and the sealing flange bushing and is installed in a sealed rotational manner. A pressure cover is fixedly installed relative to the outside of the sealing flange sleeve.

[0013] Furthermore, a rotating handle is installed at one end of the active rotating shaft located on the outside of the furnace body, the positioning part is fixedly installed on the rotating handle, and an insertion hole is provided on the pressure cover for the positioning part to be inserted and installed.

[0014] Furthermore, the hopper is fixedly installed on the driven rotating shaft, the driven rotating shaft is rotatably installed relative to the rotating support frame, and the rotating support frame is fixedly installed relative to the inner wall of the furnace.

[0015] Furthermore, a connecting block is fixedly installed at the end of the hopper. The connecting block is fitted onto the driven rotating shaft. A clamping component is installed on the connecting block, which passes through one side radially. The clamping component is used to clamp onto the driven rotating shaft after passing through the connecting block to ensure that the connecting block and the driven rotating shaft do not rotate relative to each other.

[0016] Furthermore, the driven rotating shaft is provided with an anti-rotation part for embedded installation. The top of the anti-rotation part protrudes from the driven rotating shaft, and the clamping member passes through the connecting block and clamps against the groove on the top surface of the anti-rotation part.

[0017] Furthermore, the active rotating shaft and the driven rotating shaft are connected by a connecting sleeve. The inner cavity of the connecting sleeve is configured with mounting holes at both ends of a central ring platform. The active rotating shaft and the driven rotating shaft are respectively inserted and installed into the mounting holes at both ends. The ring platform is used to prevent the active rotating shaft and the driven rotating shaft from contacting each other.

[0018] Furthermore, a sealing component is installed between the sealing flange sleeve and the active rotating shaft and is rotatably mounted relative to each other via a rotating bushing b, and the rotating support frame is rotatably mounted relative to the driven rotating shaft via a rotating bushing a.

[0019] Furthermore, the rotating bushings a and b are made of bearings or copper bushings, the driving rotating shaft is made of stainless steel, the driven rotating shaft is made of copper, and the connecting sleeve is made of Ti-6Al-4V alloy.

[0020] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0021] (1). This utility model abandons the conventional method of feeding material by setting a horizontally installed rotating shaft body, which is vertically installed on the top cover of the furnace body. It makes full use of the space on the side wall of the furnace body. Furthermore, by setting a rotating shaft body and a positioning part, the rotating and stopping of the rotating shaft body are realized. This allows the hopper installed on the rotating shaft body to feed material as it moves. The entire feeding process is convenient to operate, low in cost, easy to process, disassemble and maintain, and greatly saves manpower and material resources while improving feeding efficiency.

[0022] (2). This utility model sets up an active rotating shaft and a driven rotating shaft that are not in contact and are connected by a connecting sleeve. By limiting the materials of the active rotating shaft, the driven rotating shaft and the connecting sleeve, it is beneficial to eliminate the influence of electromagnetic reaction heating. At the same time, it ensures that the rotating shaft body has high strength for support. It can also prevent the high temperature environment inside the furnace from causing the sealing parts to deform due to heat conduction. This not only affects the airtightness of the furnace body, but also causes poor rotational stability of the rotating shaft body, abnormal noise, and time-consuming and laborious maintenance and disassembly, which affects the working efficiency of the entire equipment. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention installed on the furnace body;

[0024] Figure 2 This is a top view of the structure of the present invention installed on the furnace body;

[0025] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0026] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0027] Figure 5 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 6This is a three-dimensional structural diagram of a portion of the present utility model.

[0029] In the diagram: 100, furnace body; 200, feeding device; 201, rotating handle; 202, pressure cap; 203, sealing flange sleeve; 204, flange bushing; 205, driving rotating shaft; 206, sealing component; 207, connecting sleeve; 208, driven rotating shaft; 209, rotating support frame; 210, clamping component; 211, anti-rotation part; 212, connecting block; 213, hopper; 214, rotating bushing a; 215, positioning part; 216, rotating bushing b; 300, crucible. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent.

[0032] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of this application. The singular forms “a,” “described,” and “…” used in the embodiments of this application and the appended claims are also considered.

[0033] The word "the" is also intended to include the majority form unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0034] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0035] In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or"

[0037] The description of the relationship between associated objects indicates that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following associated objects have an "OR" relationship. The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0038] To address the limitations of existing technologies, this embodiment provides a technical solution. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0039] This utility model addresses the common problems of existing secondary feeding devices used in small vacuum melting furnaces, such as large space occupation, complex structure that is difficult to disassemble and maintain, poor airtightness and high failure rate due to long-term high temperature environment. It provides a secondary feeding device suitable for small powder making equipment, with the specific improved structure as follows:

[0040] See appendix Figure 1-6A secondary feeding device suitable for small-scale powder making equipment is disclosed. The feeding device 200 includes a rotating shaft body, a hopper 213, and a positioning part 215. One end of the rotating shaft body is rotatably mounted relative to the side wall of the furnace body 100, and the other end horizontally penetrates the wall of the furnace body 100 and is located in the inner cavity of the furnace body 100 and is rotatably mounted relative to the inner cavity of the furnace body 100. It can be understood that one end of the rotating shaft body is located outside the furnace body 100, and the other end is located inside the furnace body 100. The rotating shaft body is rotatably mounted relative to the furnace body 100 so that the hopper 213 mounted on it can pour the raw material into the crucible 300 inside the furnace body 100 while rotating. The rotating shaft body includes an active rotating shaft 205 and a driven rotating shaft 208. The active rotating shaft 205 and the driven rotating shaft 208 are fixedly mounted relative to each other and are not in direct contact. The active rotating shaft 205 is located outside the furnace body 100, and the driven rotating shaft 208 is located inside the furnace body 100. The active rotating shaft 205 and the driven rotating shaft 208 are connected by a connecting sleeve 207. The inner cavity of the connecting sleeve 207 is configured with mounting holes at both ends of a central ring platform. The active rotating shaft 205 and the driven rotating shaft 208 are respectively inserted into the mounting holes at both ends. The ring platform is used to prevent the active rotating shaft 205 and the driven rotating shaft 208 from contacting each other. The active rotating shaft 205 is made of stainless steel, the driven rotating shaft 208 is made of copper, and the connecting sleeve 207 is made of Ti-6Al-4V alloy. It is understood that after the active rotating shaft 205 and the driven rotating shaft 208 are inserted into the connecting sleeve 207, they are secured by radially installed screws to prevent them from detaching from the connecting sleeve 207. The purpose of the active rotating shaft 205 and the driven rotating shaft 208 not contacting each other and the material of the two combined with the material of the connecting sleeve 207 is to use copper for the driven rotating shaft 208 to eliminate the influence of electromagnetic reaction heating, and to use Ti-6Al-4V alloy for the connecting sleeve 207 to ensure that the rotating shaft body has high strength for support, while also preventing the high temperature environment inside the furnace body 100 from causing the sealing component 206 to deform due to heat conduction. This not only ensures the airtightness of the furnace body 100, but also ensures the rotational stability of the entire rotating shaft body, avoiding malfunctions caused by high temperature environment, thereby ensuring the feeding efficiency of the entire equipment.

[0041] See appendix Figure 3-6A hopper 213 is fixedly installed relative to the rotating shaft body and located inside the furnace body 100. The hopper 213 is fixedly installed relative to the driven rotating shaft 208. Specifically, a connecting block 212 is fixedly installed at the end of the hopper 213. Here, the end of the hopper 213 refers to the end away from the discharge. The connecting block 212 is fitted onto the driven rotating shaft 208. A tightening component 210 is installed on the connecting block 212, which extends radially through one side. The tightening component 210 can be an adjusting screw or other rotating component. The tightening component 210 is used to tighten the connecting block 212 and the driven rotating shaft 208 to ensure that the connecting block 212 and the driven rotating shaft 208 do not rotate relative to each other. More specifically, the driven rotating shaft 208 is provided with an anti-rotation part 211 for embedded installation. The top of the anti-rotation part 211 protrudes from the driven rotating shaft 208. Here, the anti-rotation part 211 is set as a block structure with a long hole in cross section. This structure is equivalent to the shape and function of a key. The clamping member 210 passes through the connecting block 212 and clamps against the groove on the top surface of the anti-rotation part 211. It can be understood that the anti-rotation part 211 is partially embedded in the cavity on the driven rotating shaft 208, but at the same time, the anti-rotation part 211 protrudes from the driven rotating shaft 208. The connecting block 212 is also provided with a matching groove for fitting with the anti-rotation part 211. The clamping member 210 passes through one side of the connecting block 212 and clamps against the anti-rotation part 211. The top of the anti-rotation part 211 is also provided with a groove. The clamping member 210 clamps against the groove of the anti-rotation part 211 to ensure the relative stability between the hopper 213 and the driven rotating shaft 208. The driven rotating shaft 208 and the rotating support frame 209 are rotatably mounted relative to each other. In this application, there are two rotating support frames 209, located on both sides of the connecting block 212. An axial retaining ring is installed between the rotating support frame 209 and the driven rotating shaft 208 at the section of the rotating support frame 209 away from the active rotating shaft 205 to limit the rotation of the rotating support frame 209. The rotating support frame 209 and the driven rotating shaft 208 are rotatably mounted relative to each other through a rotating bushing a214. The rotating bushing a214 is a bearing or a copper sleeve. The rotating support frame 209 is fixedly mounted relative to the inner wall of the furnace body 100. Here, the fixed mounting is preferably done by welding.

[0042] See appendix Figure 6The positioning part 215 is fixedly installed relative to the rotating shaft body and cooperates with the furnace body 100 to limit the rotation of the rotating shaft body to a specified angle, thereby preventing the rotating shaft body from rotating. It can be understood that the positioning part 215 uses an elastic pin. A rotating handle 201 is installed at one end of the active rotating shaft 205 located on the outside of the furnace body 100. The positioning part 215 is fixedly installed on the rotating handle 201. An insertion hole is provided on the pressure cover 202 for the insertion and installation of the positioning part 215. The specified angle can be understood as the angle at which all the raw materials in the hopper 213 are poured out after the hopper 213 rotates to a certain angle.

[0043] See appendix Figure 3 and attached Figure 4 The feeding device 200 also includes a flange sleeve 204 that is fixedly installed relative to the furnace body 100. This fixed installation can be achieved by welding or other methods. A sealing flange sleeve 203 is fixedly installed relative to the flange sleeve 204. The flange sleeve 204 and the sealing flange sleeve 203 are coaxially installed, and the sealing flange sleeve 203 is fitted into the inner hole of the flange sleeve 204. The active rotating shaft 205 passes through the sealing flange sleeve 203 and is rotatably installed with a seal between it and the sealing flange sleeve 204. A sealing component 206 is installed between the sealing flange sleeve 203 and the active rotating shaft 205 and is rotatably mounted relative to the rotating shaft sleeve b216. The rotating shaft sleeve b216 is a bearing or a copper sleeve. A pressure cover 202 is fixedly mounted on the outer side of the sealing flange sleeve 203. In this application, the flange sleeve 204 and the active rotating shaft 205 are rotatably mounted relative to each other, and the sealing flange sleeve 203 and the active rotating shaft 205 are sealed relative to each other. An axial retaining ring is installed between the pressure cover 202 and the active rotating shaft 205 to limit the axial movement of the pressure cover 202.

[0044] When using the secondary feeding device 200 of this utility model, first pull out the positioning part 215, turn the handle, and the main body of the rotating shaft rotates synchronously with the handle. The active rotating shaft 205 rotates around the flange sleeve 204, driving the driven rotating shaft 208 to rotate. The driven rotating shaft 208 drives the hopper 213 to rotate. When it is tilted to a specified angle, the raw material in the hopper 213 is released into the crucible 300 directly below, thus completing the secondary feeding action.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0046] 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 and improvements 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 secondary feeding device suitable for small-scale flour milling equipment, characterized in that, The feeding device (200) includes: The rotating shaft body has one end rotatably mounted relative to the side wall of the furnace body (100), and the other end horizontally penetrates the wall of the furnace body (100) and is located in the inner cavity of the furnace body (100) and rotatably mounted relative to the inner cavity of the furnace body (100); The hopper (213) is fixedly installed relative to the rotating shaft body and located in the inner cavity of the furnace body (100); The positioning part (215) is fixedly installed relative to the rotating shaft body and cooperates with the furnace body (100) to limit the rotation of the rotating shaft body to a specified angle, so as to prevent the rotating shaft body from rotating.

2. The secondary feeding device suitable for small-scale flour milling equipment according to claim 1, characterized in that, The rotating shaft body includes an active rotating shaft (205) and a driven rotating shaft (208). The active rotating shaft (205) and the driven rotating shaft (208) are fixedly installed relative to each other and are not in direct contact. The active rotating shaft (205) is located outside the furnace body (100), and the driven rotating shaft (208) is located inside the furnace body (100).

3. A secondary feeding device suitable for small-scale flour milling equipment according to claim 2, characterized in that, The feeding device (200) also includes a flange bushing (204) that is fixedly installed relative to the furnace body (100). The flange bushing (204) is fixedly installed relative to the sealing flange sleeve (203). The active rotating shaft (205) passes through the sealing flange sleeve (203) and the sealing flange bushing (204) and is installed in a sealed rotation. The outer side of the sealing flange sleeve (203) is fixedly installed with a pressure cap (202).

4. A secondary feeding device suitable for small-scale flour milling equipment according to claim 3, characterized in that, The active rotating shaft (205) is mounted with a rotating handle (201) at one end located outside the furnace body (100). The positioning part (215) is fixedly mounted on the rotating handle (201). The pressure cover (202) is provided with an insertion hole for the positioning part (215) to be inserted and installed.

5. A secondary feeding device suitable for small-scale flour milling equipment according to any one of claims 3-4, characterized in that, The hopper (213) is fixedly installed on the driven rotating shaft (208), the driven rotating shaft (208) is rotatably installed relative to the rotating support frame (209), and the rotating support frame (209) is fixedly installed relative to the inner wall of the furnace body (100).

6. A secondary feeding device suitable for small-scale flour milling equipment according to claim 5, characterized in that, The connecting block (212) is fixedly installed at the end of the hopper (213). The connecting block (212) is fitted onto the driven rotating shaft (208). A clamping component (210) is installed on the connecting block (212) and extends radially through one side of it. The clamping component (210) is used to clamp the connecting block (212) onto the driven rotating shaft (208) after passing through it to ensure that the connecting block (212) and the driven rotating shaft (208) do not rotate relative to each other.

7. A secondary feeding device suitable for small-scale flour milling equipment according to claim 6, characterized in that, An anti-rotation part (211) for embedded installation is provided on the driven rotating shaft (208). The top of the anti-rotation part (211) protrudes from the driven rotating shaft (208). The clamping member (210) passes through the connecting block (212) and clamps against the groove on the top surface of the anti-rotation part (211).

8. A secondary feeding device suitable for small-scale flour milling equipment according to claim 7, characterized in that, The active rotating shaft (205) and the driven rotating shaft (208) are connected by a connecting sleeve (207). The inner cavity of the connecting sleeve (207) is configured with mounting holes at both ends of a central ring platform. The active rotating shaft (205) and the driven rotating shaft (208) are respectively inserted into the mounting holes at both ends. The ring platform is used to prevent the active rotating shaft (205) and the driven rotating shaft (208) from contacting each other.

9. A secondary feeding device suitable for small-scale flour milling equipment according to claim 8, characterized in that, A sealing component (206) is installed between the sealing flange sleeve (203) and the active rotating shaft (205) and is rotatably mounted relative to each other via a rotating bushing b (216). The rotating support frame (209) is rotatably mounted relative to the driven rotating shaft (208) via a rotating bushing a (214).

10. A secondary feeding device suitable for small-scale flour milling equipment according to claim 9, characterized in that, The rotating bushings a (214) and b (216) are made of bearings or copper bushings, the driving rotating shaft (205) is made of stainless steel, the driven rotating shaft (208) is made of copper, and the connecting sleeve (207) is made of Ti-6Al-4V alloy.

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