Screening and pickling device for recycling braising materials
By designing a material screen and soaking box device with rotatable spare plate, the problems of spilling and multi-screening equipment during the recycling of stewing furnace ingredients are solved, and convenient screening and pickling of multi-size stewing furnace ingredients are achieved, improving operational convenience and equipment efficiency.
Patent Information
- Application Number
- CN202422189281.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The existing material screen can easily cause the remaining part of the stewing furnace material to spill during the recycling process of stewing furnace material, and only one size of materials can be screened. Multiple material screens are required to complete the screening of different sizes, which is inconvenient to use.
A device including a material screen and a soaking box is designed. The material screen can be placed in the soaking box. The spare plate can be rotated and is equipped with screen holes of different diameters. It is used to screen different sizes of stewing furnace ingredients, and directly put the screened stewing furnace ingredients into the soaking box for pickling to prevent spilling.
It realizes convenient screening and pickling of multi-size stewing ingredients, improves operation convenience and the use value of material screens, and reduces the number of equipment and operation complexity.
Smart Images
Figure CN223128773U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of single crystal pulling rod production, in particular to a screening and pickling device for recovery of furnace-stewing materials. Background Art
[0002] Photovoltaic power generation is a sustainable energy source. With the continuous decline of the cost of photovoltaic power generation and the continuous drop of the price of monocrystalline silicon wafers, how to reduce silicon material waste and improve the recycling rate to effectively reduce production costs in the production of single crystal pulling rods has become the focus of the industry.
[0003] In the production process of single crystal pulling rods, a large amount of furnace-stewing materials will be generated after normal furnace shutdown and abnormal pulling and furnace stewing due to other reasons. The furnace-stewing materials are the remaining materials in the crucible after multiple pulling of crystal rods through processes such as initial charging, multiple recharging and melting, and then seeding, shoulder releasing, shoulder turning, and equal diameter. The furnace-stewing materials can be divided into different weight ranges, recovered in the form of recycled materials, and then sorted, cleaned, and crushed before being put into the furnace for reuse to reduce silicon material waste. At present, when recovering furnace-stewing materials, usually a material sieve is first used to screen the furnace-stewing materials, and small pieces of materials that are not easy to separate are screened out as non-recyclable parts for scrapping treatment. The remaining parts attached with small pieces of quartz and not easy to knock off with a tungsten-cobalt hammer are poured into a soaking basket for pickling, so as to corrode the quartz and oxidation residues on the silicon material without affecting the physical and electrical properties of the silicon material, and enable the pickled silicon material to be reused.
[0004] However, after screening out small pieces of materials that are not easy to separate with the above-mentioned material sieve, when pouring the remaining part into the soaking basket, it is easy for the furnace-stewing materials to spill, which brings inconvenience to the operators; and the existing material sieve can only screen materials of one size. When screening materials of different sizes, multiple material sieves are required to complete the screening, which is extremely inconvenient to use. Content of the Utility Model
[0005] The purpose of the utility model is to provide a screening and pickling device for recovery of furnace-stewing materials to solve the problems raised in the above background art, that is, when pouring the remaining part of the furnace-stewing materials into the soaking basket, it is easy for the materials to spill, which brings inconvenience to the operators; and the existing material sieve can only screen materials of one size. When screening materials of different sizes, multiple material sieves are required to complete the screening, which is extremely inconvenient to use.
[0006] To achieve the above purpose, the utility model provides the following technical solutions:
[0007] A screening and pickling device for recovery of furnace-stewing materials, comprising a material sieve and a soaking tank;
[0008] The material sieve includes side plates, a bottom plate and a spare plate, and one end of the spare plate is rotatably connected to the intersection of the side plates and the bottom plate;
[0009] The soaking tank can accommodate the material sieve;
[0010] Wherein, a plurality of first sieve holes are formed in the side plate and the bottom plate, and second sieve holes corresponding to the first sieve holes on the bottom plate are formed in the spare plate;
[0011] The diameter of the second sieve hole is smaller than the diameter of the first sieve hole.
[0012] Preferably, the inner bottom corners of the material sieve are all arc-shaped.
[0013] Preferably, a handle is further provided at the top of the side plate of the material sieve, and an anti-pinch structure is provided on the handle.
[0014] Preferably, a hook is provided at the other end of the spare plate, the hook can rotate circumferentially along the axial direction of the spare plate at the end of the spare plate, and the hook can be engaged with the bottom of the handle or the first sieve hole.
[0015] Preferably, the spare plate can be one or more.
[0016] Preferably, both the first sieve hole and the second sieve hole are in an inverted funnel shape.
[0017] Preferably, a retaining strip is provided at the inner bottom of the soaking tank, and an anti-slip layer is provided on the retaining strip.
[0018] Preferably, an acid supply pipe, a water supply pipe, an acid discharge pipe and a drain pipe are provided on the soaking tank, and a switching valve is provided on each of the acid supply pipe, the water supply pipe, the acid discharge pipe and the drain pipe.
[0019] Preferably, a liquid level scale line is provided on the inner side of the side wall of the soaking tank.
[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows: By designing the material sieve into a structure that can be placed in the soaking tank, after screening the muffle furnace charge, the screened muffle furnace charge together with the material sieve can be directly put into the soaking tank, preventing the muffle furnace charge from spilling, and being more convenient in operation; A rotatable spare plate is designed on the material sieve, and second sieve holes with a diameter smaller than the first sieve holes on the bottom plate of the material sieve are formed on the spare plate. When screening large-size materials, the spare plate can be rotated to the side of the material sieve, and when screening small-size materials, the spare plate can be rotated to the bottom of the material sieve, thereby realizing the screening of multi-size materials and improving the use value and convenience of the material sieve. Description of the Drawings
[0021] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0022] Figure 1 Schematic diagram of the overall structure of the embodiment of the present utility model;
[0023] Figure 2 Schematic perspective view of the material sieve of the embodiment of the present utility model;
[0024] Figure 3 Front view of the material sieve of the embodiment of the present utility model;
[0025] Figure 4 Schematic diagram of the overlap of the first sieve holes and the second sieve holes of the embodiment of the present utility model;
[0026] Figure 5 Schematic perspective view of the soaking tank of the embodiment of the present utility model.
[0027] Reference numerals:
[0028] 10. Material sieve; 101. Spare plate; 1011. Second sieve hole; 1012. Hook; 102. First sieve hole; 103. Handle;
[0029] 20. Soaking tank; 201. Bar; 202. Acid supply pipe; 203. Water supply pipe; 204. Acid discharge pipe; 205. Drain pipe; 206. Base;
[0030] 30. Rotating shaft. Detailed implementation manners
[0031] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.
[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "top", "bottom", "inner", "axial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the products of the present utility model are customarily placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.
[0034] In the present utility model, unless otherwise clearly specified and defined, terms such as "connected" and "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0035] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.
[0036] The embodiments of the present utility model will be described in detail below with reference to the drawings.
[0037] As Figures 1 to 5 shown, an embodiment of the present utility model provides a screening and pickling device for recuperating furnace charge, including a material screen 10 and a soaking tank 20;
[0038] The material sieve 10 includes side plates, a bottom plate, and a spare plate 101. One end of the spare plate 101 is rotatably connected to the intersection of the side plates and the bottom plate;
[0039] The soaking tank 20 can accommodate the material sieve 10;
[0040] Among them, a number of first sieve holes 102 are provided on the side plates and the bottom plate, and second sieve holes 1011 corresponding to the first sieve holes 102 on the bottom plate are provided on the spare plate 101;
[0041] The diameter of the second sieve holes 1011 is smaller than the diameter of the first sieve holes 102.
[0042] Specifically, an installation groove is provided at the connection of the side plates and the bottom plate. A rotating shaft 30 is provided in the installation groove, and the spare plate 101 is connected to the intersection of the side plates and the bottom plate through the rotating shaft 30.
[0043] In order to prevent silicon materials from getting stuck in the sieve holes, both the first sieve holes 102 and the second sieve holes 1011 are in the shape of an inverted funnel.
[0044] Specifically, the diameter of the end of the first sieve hole 102 in contact with the silicon material is 30 mm, and the diameter of the end of the second sieve hole 1011 in contact with the silicon material is 8 mm.
[0045] During use, first rotate the spare plate 101 to the side of the material sieve 10, put the collected furnace-simmered materials into the material sieve 10, and use the first sieve holes 102 to screen out quartz residues with a block linear dimension of not less than 30 mm, so as to clean the large-sized quartz residues from the furnace-simmered materials; then separately collect the remaining furnace-simmered materials after screening according to different sizes. Among them, for the small pieces of silicon materials with quartz and oxidation parts that are not easy to clean attached, use a small-sized pointed tungsten-cobalt hammer to pick the attached quartz and oxidation parts. Put the remaining small pieces of silicon materials after picking into the material sieve 10, rotate the spare plate 101 under the bottom plate of the material sieve 10, and use the second sieve holes 1011 to screen out silicon materials with a block linear dimension of not less than 8 mm. Then put the material sieve 10 and this part of the silicon materials into the soaking tank 20, and put an acid-base solvent into the soaking tank 20 until the solution submerges the silicon materials, so as to pickle the silicon materials. The silicon materials smaller than 8 mm are regarded as non-recyclable parts and are scrapped.
[0046] It should be noted that since the material sieve 10 needs to be soaked in acid for a long time, the material sieve 10 needs to be made of corrosion-resistant materials.
[0047] By designing the material sieve 10 to be placed in the soaking tank 20, after screening the closed furnace material, the screened closed furnace material together with the material sieve 10 can be directly put into the soaking tank 20, preventing the closed furnace material from spilling, which is more convenient in operation; a rotatable spare plate 101 is designed on the material sieve 10, and a second sieve hole 1011 with a diameter smaller than the first sieve hole 102 on the bottom plate of the material sieve is opened on the spare plate 101. When screening large-size materials, the spare plate 101 can be rotated to the side of the material sieve 10, and when screening small-size materials, the spare plate 101 can be rotated to the bottom of the material sieve 10, thereby realizing the screening of multi-size materials and improving the use value and convenience of the material sieve.
[0048] To prevent the material from being difficult to clean at the dead corners of the material sieve 10, the inner bottom corners of the material sieve 10 are all arc-shaped.
[0049] Furthermore, to facilitate the handling of the material sieve 10, a handle 103 is provided at the top of the side plate of the material sieve 10, and an anti-strangulation structure is provided on the handle 103 to prevent the operator from getting hurt when handling the material sieve 10.
[0050] To fix the spare plate 101 in the standby state or in the use state, a hook 1012 is provided at the other end of the spare plate 101. The hook 1012 can rotate circumferentially along the axial direction of the hook 1012 at the end of the spare plate 101, and the hook 1012 can be engaged with the bottom of the handle 103 and the first sieve hole 102.
[0051] When the spare plate 101 is not in use, the hook 1012 is engaged with the bottom of the handle 103 of the side plate on the connection side of the spare plate 101; when the spare plate 101 is in the use state, the hook 1012 is engaged with the first sieve hole 102 in the side plate opposite to the side plate on the connection side of the spare plate 101.
[0052] Specifically, the spare plate 101 is not larger than the bottom plate, so that the hook 1012 can be engaged with the first sieve hole 102 when the spare plate 101 is in the use state.
[0053] Furthermore, the spare plate 101 can be one or more, and the diameters of the sieve holes on different spare plates 101 are different, so as to realize the screening of various sizes of materials according to needs.
[0054] To facilitate the cleaning after the silicon material falls to the bottom of the soaking tank 20, a retaining strip 201 is provided at the inner bottom of the soaking tank 20, which can separate the material sieve 10 from the bottom of the soaking tank 20. An anti-slip layer is provided on the retaining strip 201 to prevent the material sieve 10 from sliding due to uneven distribution of the silicon material on the bottom plate of the material sieve 10 during the soaking process.
[0055] Further, the soaking tank 20 is provided with an acid supply pipe 202, a water supply pipe 203, an acid discharge pipe 204 and a drain pipe 205. Switch valves are provided on the acid supply pipe 202, the water supply pipe 203, the acid discharge pipe 204 and the drain pipe 205, which facilitates the supply and discharge of the acid-base solvent during pickling and the water for rinsing the soaking tank 20.
[0056] As Figure 5 shown, in order to conveniently observe the liquid level height, a liquid level scale line is provided on the inner side of the side wall of the soaking tank 20.
[0057] In addition, a base 206 is further provided at the bottom of the soaking tank 20, which facilitates the cleaning of the bottom of the soaking tank 20.
[0058] It should be noted that, in addition to being used in combination, the material sieve 10 and the soaking tank 20 can also be used separately, so that the device can meet more usage requirements and improve the usage range of the device.
[0059] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A screening and pickling device for recovering furnace charge, characterized in that It includes a material sieve (10) and a soaking tank (20); The material sieve (10) includes side plates, a bottom plate and a spare plate (101), and one end of the spare plate (101) is rotatably connected to the intersection of the side plate and the bottom plate; The soaking tank (20) can accommodate the material sieve (10); Among them, a number of first sieve holes (102) are provided on the side plate and the bottom plate, and second sieve holes (1011) corresponding to the first sieve holes (102) on the bottom plate are provided on the spare plate (101); The diameter of the second sieve hole (1011) is smaller than the diameter of the first sieve hole (102).
2. The screening and pickling device for recovery of closed furnace materials according to claim 1, characterized in that: The inner bottom corners of the material sieve (10) are all arc-shaped.
3. The screening and pickling device for recovery of furnace charge according to claim 1, characterized in that: A handle (103) is also provided at the top of the side plate of the material sieve (10), and an anti-slip structure is provided on the handle (103).
4. The screening and pickling device for recuperating the muffle furnace charge according to claim 3, characterized in that: A hook (1012) is provided at the other end of the spare plate (101), the hook (1012) can rotate circumferentially along the axial direction of the hook (1012) at the end of the spare plate (101), and the hook (1012) can be engaged with the bottom of the handle (103) or the first sieve hole (102).
5. The screening and pickling device for recuperating the furnace charge according to claim 1, wherein: The spare plate (101) can be one or more.
6. The screening and pickling device for recuperating the muffle furnace charge according to claim 1, wherein: Both the first sieve hole (102) and the second sieve hole (1011) are in an inverted funnel shape.
7. The screening and pickling device for recovery of stuff in covered furnace, as claimed in claim 1, wherein: A retaining strip (201) is provided at the inner bottom of the soaking tank (20), and an anti-slip layer is provided on the retaining strip (201).
8. The screening and pickling device for recuperating the stuff in the covered furnace according to claim 1, wherein: A sour supply pipe (202), a water supply pipe (203), an acid discharge pipe (204) and a drain pipe (205) are provided on the soaking tank (20), and on-off valves are provided on the sour supply pipe (202), the water supply pipe (203), the acid discharge pipe (204) and the drain pipe (205).
9. The screening and pickling device for recuperating oven charge according to claim 1, characterized in that: A liquid level scale line is provided on the inner side wall of the soaking tank (20).