Molten salt feeding bin and molten salt electrolytic refining equipment

Abstract

The utility model relates to a molten salt feeding bin and molten salt electrolytic refining equipment. The fused salt feeding bin comprises a bin body, a vacuumizing assembly and a reverse blowing assembly, the vacuumizing assembly comprises a vacuumizing pipeline, a vacuum pump and a filter element, one end of the vacuumizing pipeline is communicated with the bin body, the other end of the vacuumizing pipeline is communicated with the vacuum pump, and the filter element is fixedly arranged in the vacuumizing pipeline; the back-blowing assembly is communicated with the vacuumizing pipeline, and the communication position is located between the filter element and the vacuum pump and used for back-blowing gas towards the filter element along the vacuumizing pipeline. By arranging the reverse blowing assembly communicated with the vacuumizing pipeline, when the fused salt powder blocks the filter element and affects the vacuumizing efficiency, the vacuum pump is closed, the reverse blowing assembly is opened, the filter element and the vacuumizing pipeline can be dredged through gas reverse blowing, the fused salt powder is blown back into the stock bin, and the vacuumizing efficiency is improved. And after dredging is completed, the blowback assembly is closed, the vacuum pump is started again, and high vacuumizing efficiency can be guaranteed by repeating the process.

Description

Technical Field

[0001] The utility model relates to the technical field related to molten salt feeding equipment, in particular to a molten salt feeding silo and electrolytic refining molten salt equipment. Background Art

[0002] Molten salt has good ionic conductivity and chemical stability and can be used as an excellent medium for chemical reactions. Before electrolytic refining of molten salt, it is usually necessary to pre-treat it to remove water and oxygen, so the raw materials need to be vacuumed.

[0003] Currently, vacuuming operations are mostly achieved by using a vacuum pump to evacuate air. When the vacuum pump is started, the gas in the molten salt tank is extracted, making the molten salt in a vacuum state, so that moisture and oxygen will quickly escape from the molten salt.

[0004] However, since most molten salts usually exist in powder form under normal conditions, when common vacuum pumping structures use them to evacuate the molten salts, the powders may clog the vacuum pipes, resulting in low vacuum efficiency and frequent maintenance. Utility Model Content

[0005] Based on this, it is necessary to provide a molten salt feed silo and electrolytic refining molten salt equipment with relatively high efficiency and no frequent maintenance, in order to address the problem that the current vacuum structure of molten salt raw materials is prone to vacuum pipes, resulting in low efficiency and frequent maintenance.

[0006] The present application first provides a molten salt feed silo, including a silo, a vacuum assembly and a back-blowing assembly, wherein the vacuum assembly includes a vacuum pipeline, a vacuum pump and a filter element, one end of the vacuum pipeline is connected to the silo, and the other end is connected to the vacuum pump, and the filter element is fixed inside the vacuum pipeline;

[0007] The back-blowing assembly is in communication with the vacuum pumping pipeline, and the communication position is located between the filter element and the vacuum pump, so as to back-blow gas along the vacuum pumping pipeline toward the filter element.

[0008] In one of the embodiments, the silo includes a silo body and a silo cover detachably fixed to the top of the silo body, and the vacuum pipeline is connected to the silo cover.

[0009] In one embodiment, the vacuum pipeline includes a first pipeline, a temporary storage bin and a second pipeline that are connected in sequence, the first pipeline is connected to the silo, the second pipeline is connected to the vacuum pump, and the filter element is disposed in the temporary storage bin.

[0010] In one embodiment, the temporary storage bin is cylindrical, the first pipeline is connected to the bottom surface of the temporary storage bin, and the second pipeline is connected to the side surface of the temporary storage bin.

[0011] In one embodiment, the filter element is cylindrical and has a through hole extending through it along the axial direction. The first pipeline corresponds to the through hole. There is a gap between the top of the filter element and the top wall of the temporary storage bin. The side wall of the through hole has multiple filter holes extending through it along the radial direction.

[0012] In one embodiment, the diameter of the filter hole gradually decreases from the inside to the outside.

[0013] In one of the embodiments, the temporary storage bin includes a temporary storage bin body and a temporary storage bin cover detachably fixed to the top of the temporary storage bin body.

[0014] In one embodiment, the back-blowing assembly includes a back-blowing pipeline and a back-blowing air pump. One end of the back-blowing pipeline is connected to the vacuum pipeline, and the other end is connected to the back-blowing air pump.

[0015] In one embodiment, the backflush pipeline is connected to the vacuum pipeline in a T-shape, and the backflush pipeline is perpendicular to the vacuum pipeline.

[0016] A second aspect of the present application provides an electrolytic refining molten salt device, comprising the above-mentioned molten salt feed silo.

[0017] The above-mentioned molten salt feeding silo is provided with a back-blowing component connected to the vacuum pipeline, so that when the molten salt powder blocks the filter element and affects the vacuum efficiency, the vacuum pump is turned off and the back-blowing component is turned on. The filter element and the vacuum pipeline can be unblocked by gas back-blowing, and the molten salt powder can be blown back into the silo. After the unblocking is completed, the back-blowing component is turned off and the vacuum pump is started again. Repeating the above process can ensure a higher vacuum efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of the feeding silo in the front view direction of this application;

[0019] Figure 2 This is a top view of the feeding silo for this application;

[0020] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0021] Figure numerals: 10, silo; 11, silo body; 12, silo cover; 20, vacuum assembly; 21, vacuum pipeline; 211, first pipeline; 212, temporary storage bin; 212a, temporary storage bin body; 212b, temporary storage bin cover; 213, second pipeline; 22, filter element; 221, through hole; 222, filter hole; 30, backflush assembly; 31, backflush pipeline. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0028] Please combine Figure 1 as well as Figure 2 As shown, the present application first provides a molten salt feed silo, including a silo 10, a vacuum assembly 20 and a back-blowing assembly 30, the vacuum assembly 20 includes a vacuum pipeline 21, a vacuum pump and a filter element 22, one end of the vacuum pipeline 21 is connected to the silo 10, and the other end is connected to the vacuum pump, and the filter element 22 is fixed inside the vacuum pipeline 21;

[0029] The back-blowing assembly 30 is in communication with the vacuum pumping pipeline 21 , and the communication position is located between the filter element 22 and the vacuum pump, so as to back-blow gas along the vacuum pumping pipeline 21 toward the filter element 22 .

[0030] In the present application, by setting up a backblowing component 30 connected to the vacuum pumping line 21, when the molten salt powder blocks the filter element 22 and affects the vacuum pumping efficiency, the vacuum pump is turned off and the backblowing component 30 is turned on. The filter element 22 and the vacuum pumping line 21 can be unblocked by gas backblowing, and the molten salt powder can be blown back into the silo 10. After the unblocking is completed, the backblowing component 30 is turned off and the vacuum pump is started again. Repeating the above process can ensure a higher vacuum pumping efficiency.

[0031] Please refer to Figure 1 As shown, in some embodiments, the silo 10 includes a silo body 11 and a silo cover 12 detachably fixed to the top of the silo body 11 , and the vacuum line 21 is connected to the silo cover 12 .

[0032] Since the molten salt powder in the silo 10 accumulates at the bottom of the silo body 11 under the action of its own weight, connecting the vacuum pipeline 21 with the silo cover 12 can minimize the possibility of inhaling molten salt powder during the vacuum process and reduce the probability of molten salt powder clogging the filter element 22, thereby improving the vacuum efficiency of the equipment.

[0033] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the vacuum pipeline 21 includes a first pipeline 211, a temporary storage bin 212 and a second pipeline 213 which are connected in sequence, the first pipeline 211 is connected to the silo 10, the second pipeline 213 is connected to the vacuum pump, and the filter element 22 is disposed in the temporary storage bin 212.

[0034] The temporary storage bin 212 can carry a certain amount of molten salt powder to prevent the powder from entering the subsequent pipeline. When the temporary storage bin 212 reaches the carrying capacity, the backflush assembly 30 is opened for backflush and dredging, and the molten salt powder in the temporary storage bin 212 is blown into the silo 10 through the first pipeline 211.

[0035] In addition, due to the temporary storage effect of the temporary storage bin 212, the startup frequency of the backflush assembly 30 can be reduced, further increasing the vacuuming efficiency of the equipment.

[0036] Please refer to Figure 3 As shown, in some embodiments, the temporary storage bin 212 is cylindrical, the first pipeline 211 is connected to the bottom surface of the temporary storage bin 212 , and the second pipeline 213 is connected to the side surface of the temporary storage bin 212 .

[0037] Please refer to Figure 3 As shown, in some embodiments, the filter element 22 is also cylindrical, and a through hole 221 is opened along the axial direction, the first pipeline 211 corresponds to the through hole 221, there is a gap between the top of the filter element 22 and the inner top wall of the temporary storage bin 212, and a plurality of filter holes 222 are opened along the radial direction on the side wall of the through hole 221.

[0038] After the vacuum pump is started, the air in the silo 10 is sucked out along the first pipeline 211, the through hole 221, and the second pipeline 213 in sequence. During the vacuuming process, the molten salt powder carried by the air will be blocked by the filter element 22 when passing through the filter hole 222.

[0039] After the back-blowing assembly 30 is started, the back-blowing air can back-blow and clear the molten salt powder blocked in the through hole 221 through the filter hole 222 and the gap between the top of the filter element 22 and the inner top wall of the temporary storage bin 212 .

[0040] Specifically, there is also a gap between the side surface of the filter element 22 and the inner wall of the temporary storage bin 212 .

[0041] Please refer to Figure 3As shown, in some embodiments, the diameter of the filter hole 222 gradually decreases from the inside to the outside.

[0042] Please refer to Figure 3 As shown, in some embodiments, the temporary storage bin 212 includes a temporary storage bin body 212a and a temporary storage bin cover 212b detachably fixed to the top of the temporary storage bin body 212a.

[0043] When a blockage that cannot be resolved by back-blowing occurs in the temporary storage bin 212 , the temporary storage bin cover 212 b can be opened to clean the interior of the temporary storage bin 212 , which also facilitates maintenance and replacement of the filter element 22 .

[0044] Please refer to Figure 2 As shown, in some embodiments, the back-blowing assembly 30 includes a back-blowing pipeline 31 and a back-blowing air pump. One end of the back-blowing pipeline 31 is connected to the vacuum pipeline 21, and the other end is connected to the back-blowing air pump.

[0045] Specifically, one end of the back-blowing pipeline 31 connected to the back-blowing air pump and one end of the vacuuming pipeline 21 connected to the vacuum pump are both provided with needle valves.

[0046] Please refer to Figure 2 As shown, in some embodiments, the backflush pipeline 31 is connected to the vacuum pumping pipeline 21 in a T-shape, and the backflush pipeline 31 is perpendicular to the vacuum pumping pipeline 21 .

[0047] Of course, in some other embodiments, the backflush pipeline 31 and the vacuum pipeline 21 are also connected in other structures. As long as the connection position of the backflush pipeline 31 is located between the filter element 22 and the vacuum pump, the present application will not make further comparisons here.

[0048] A second aspect of the present application provides an electrolytic refining molten salt device, comprising the above-mentioned molten salt feed silo.

[0049] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A molten salt feed silo, characterized in that: The invention comprises a material bin (10), a vacuum pumping assembly (20) and a back-blowing assembly (30), wherein the vacuum pumping assembly (20) comprises a vacuum pumping pipeline (21), a vacuum pump and a filter element (22), wherein one end of the vacuum pumping pipeline (21) is connected to the material bin (10), and the other end is connected to the vacuum pump, and the filter element (22) is fixedly arranged inside the vacuum pumping pipeline (21); The back-blowing assembly (30) is in communication with the vacuum pumping pipeline (21), and the communication position is located between the filter element (22) and the vacuum pump, and is used for back-blowing gas along the vacuum pumping pipeline (21) toward the filter element (22).

2. The molten salt feed silo according to claim 1, characterized in that: The silo (10) comprises a silo body (11) and a silo cover (12) detachably fixed to the top of the silo body (11), and the vacuum extraction pipeline (21) is connected to the silo cover (12).

3. The molten salt feed silo according to claim 2, characterized in that: The vacuum extraction pipeline (21) comprises a first pipeline (211), a temporary storage bin (212), and a second pipeline (213) which are connected in sequence, the first pipeline (211) being connected to the material bin (10), the second pipeline (213) being connected to the vacuum pump, and the filter element (22) being arranged in the temporary storage bin (212).

4. The molten salt feed silo according to claim 3, characterized in that: The temporary storage bin (212) is cylindrical, the first pipeline (211) is connected to the bottom surface of the temporary storage bin (212), and the second pipeline (213) is connected to the side surface of the temporary storage bin (212).

5. The molten salt feed silo according to claim 4, characterized in that: The filter element (22) is cylindrical and has a through hole (221) extending therethrough along the axial direction; the first pipeline (211) corresponds to the through hole (221); a gap is provided between the top of the filter element (22) and the inner top wall of the temporary storage bin (212); and a plurality of filter holes (222) are provided on the side wall of the through hole (221) along the radial direction.

6. The molten salt feed silo according to claim 5, characterized in that: The diameter of the filter hole (222) gradually decreases from the inside to the outside.

7. The molten salt feed silo according to claim 4, characterized in that: The temporary storage bin (212) comprises a temporary storage bin body (212a) and a temporary storage bin cover (212b) detachably fixed to the top of the temporary storage bin body (212a).

8. The molten salt feed silo according to claim 1, characterized in that: The back-blowing assembly (30) comprises a back-blowing pipeline (31) and a back-blowing air pump. One end of the back-blowing pipeline (31) is connected to the vacuum pump pipeline (21), and the other end is connected to the back-blowing air pump.

9. The molten salt feed silo according to claim 8, characterized in that: The backflush pipeline (31) is connected to the vacuum pumping pipeline (21) in a T-shape, and the backflush pipeline (31) is perpendicular to the vacuum pumping pipeline (21).

10. An electrolytic refining molten salt device, characterized in that: It comprises a molten salt feed silo as described in any one of claims 1 to 9.

Images