Acid mixing machine

Abstract

The utility model relates to an acid mixing machine. The acid mixing machine comprises a shell, a first rotating shaft and an acid supply mechanism, the shell is provided with a mixing cavity; a first rotating shaft is rotatably connected to the shell, the first rotating shaft is hollow, a plurality of first spraying holes are formed in the part, located in the mixing cavity, of the first rotating shaft, and each first spraying hole is used for communicating the mixing cavity with the interior of the first rotating shaft; the acid supply mechanism is rotatably connected with one end, extending out of the mixing cavity, of the first rotating shaft, and is communicated with the interior of the first rotating shaft. By adopting the acid mixing machine, in the process of mixing materials and sulfuric acid in the mixing cavity, the sulfuric acid can be sprayed out through the first spraying holes in the surface of the first rotating shaft, and the sulfuric acid can be more uniformly sprayed into the mixing cavity along with the rotation of the first rotating shaft, so that the distribution uniformity of the sulfuric acid is provided, the sulfuric acid and the materials are more uniformly mixed, and the mixing efficiency is improved. The accumulation of the material blocks in the mixing cavity is avoided, so that the influence on the use of equipment due to accumulation is avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of mixing equipment, and specifically relates to an acid mixing machine. Background Art

[0002] In the process of lithium extraction from ore, after static roasting, transformation and grinding of spodumene, sulfuric acid needs to be used for acidification to replace the lithium ions in the spodumene and form lithium sulfate, which is convenient for subsequent leaching and purification. The acid mixer is used to mix the ground spodumene material with sulfuric acid. Existing acid mixers usually use a distributor or nozzle to add acid from the top of the equipment. Sulfuric acid flows from top to bottom by gravity and gradually mixes with the material. This method is prone to uneven mixing, that is, the material close to the distributor or nozzle is better mixed, and the material far from the distributor or nozzle cannot be effectively mixed with sulfuric acid, resulting in material agglomeration and accumulation inside the equipment. In severe cases, the stirring shaft will be stuck and the motor will be burned. Utility Model Content

[0003] The technical problem to be solved by the present application is that the sulfuric acid and the material are not mixed evenly in the existing acid mixer, which causes the material to agglomerate and accumulate inside the equipment. A mixing acid machine is provided to ensure that the material and sulfuric acid are mixed evenly and to avoid the agglomeration and accumulation of the material affecting the use of the equipment.

[0004] The technical solution proposed in this application is:

[0005] A mixed acid machine, comprising:

[0006] a housing having a mixing chamber;

[0007] A first rotating shaft is rotatably connected to the housing, the first rotating shaft is hollow, and a portion of the first rotating shaft located in the mixing chamber is provided with a plurality of first spray holes, each of the first spray holes is used to connect the mixing chamber with the interior of the first rotating shaft;

[0008] The acid supply mechanism is rotatably connected to one end of the first rotating shaft extending out of the mixing chamber, and is communicated with the interior of the first rotating shaft.

[0009] Furthermore, it also includes a plurality of first one-way valves, each of which is arranged at a corresponding first spray hole.

[0010] Furthermore, it also includes a second rotating shaft, which is rotatably connected to the housing and parallel to the first rotating shaft, the second rotating shaft is hollow, and a portion of the second rotating shaft located in the mixing chamber is provided with a plurality of second spray holes, each of the second spray holes is used to communicate the mixing chamber with the interior of the second rotating shaft;

[0011] The acid supply mechanism is rotatably connected to one end of the second rotating shaft extending out of the shell, and is communicated with the interior of the second rotating shaft.

[0012] Furthermore, it also includes a plurality of second one-way valves, each of which is disposed at a corresponding second spray hole.

[0013] Furthermore, it also includes a plurality of stirring blades, which are respectively arranged on the first rotating shaft and the second rotating shaft in the mixing chamber, and each stirring blade is detachably connected to the first rotating shaft or the second rotating shaft.

[0014] Furthermore, it also includes a driving member and a transmission member, the driving member is connected to the first rotating shaft or the second rotating shaft, and the transmission member is connected between the first rotating shaft and the second rotating shaft to make the first rotating shaft and the second rotating shaft rotate synchronously.

[0015] Furthermore, it also includes a spray assembly, which is connected to the shell and at least partially extends into the top of the mixing chamber, and the acid supply mechanism is connected to the spray assembly.

[0016] Furthermore, the shell is also provided with a feed inlet and a discharge port which are connected with the mixing chamber, the feed inlet is located at the top of the shell, and the discharge port is located at the bottom of the shell.

[0017] Furthermore, the discharge port penetrates the bottom wall of the mixing chamber, and the level of the discharge port is lower than the level of other positions of the bottom wall of the mixing chamber.

[0018] Furthermore, the shell is also provided with an inspection port communicating with the mixing chamber, and the inspection port is located at the top of the shell.

[0019] By using the above-mentioned acid mixer, during the process of mixing the material in the mixing chamber and the sulfuric acid, the sulfuric acid can be sprayed out through the first spray hole on the surface of the first rotating shaft, and as the first rotating shaft rotates, the sulfuric acid can be sprayed into the mixing chamber more evenly, thereby providing uniformity of sulfuric acid distribution, making the sulfuric acid and the material mixed more evenly, avoiding the accumulation of material agglomerates in the mixing chamber, and thus avoiding affecting the use of the equipment due to the accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present application and constitute a part of the specification. They are used together with the embodiments of the present application to explain the present application and do not constitute a limitation of the present application.

[0021] Figure 1 This is a schematic diagram of the structure of this application.

[0022] Description of labels:

[0023] 10. Acid mixer; 11. Shell; 111. Mixing chamber; 112. Feed inlet; 113. Discharge outlet; 114. Inspection port; 12. First rotating shaft; 121. First one-way valve; 13. Second rotating shaft; 131. Second one-way valve; 14. Rotary joint; 15. Stirring blade; 16. Shaft seal structure; 171. Connecting pipe; 172. Nozzle; 181. Driving member; 182. Transmission member. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] In the description of the present application, 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" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 application.

[0026] like Figure 1 As shown, an embodiment of the present application provides an acid mixing machine 10, including a housing 11, a first rotating shaft 12 and an acid supply mechanism.

[0027] The shell 11 has a mixing chamber 111, and the first rotating shaft 12 is rotatably connected to the shell 11. The first rotating shaft 12 is hollow, and a portion of the first rotating shaft 12 located in the mixing chamber 111 is provided with a plurality of first spray holes, each of which is used to connect the mixing chamber 111 and the interior of the first rotating shaft 12.

[0028] The acid supply mechanism is rotatably connected to one end of the first rotating shaft 12 extending out of the mixing chamber 111 , and is communicated with the interior of the first rotating shaft 12 to supply acid to the interior of the first rotating shaft 12 .

[0029] It should be noted that, in this embodiment, the acid supply mechanism is used to input sulfuric acid into the inner wall of the first rotating shaft 12, and the mixing chamber 111 is used to mix sulfuric acid and spodumene materials. Of course, in other embodiments, other materials and other acids may also be used, which are not limited here.

[0030] By using the above-mentioned acid mixer, during the process of mixing the material in the mixing chamber 111 and sulfuric acid, the sulfuric acid can be sprayed out through the first spray hole on the surface of the first rotating shaft 12, and as the first rotating shaft 12 rotates, the sulfuric acid can be sprayed into the mixing chamber 111 more evenly, thereby providing uniform distribution of sulfuric acid, making the sulfuric acid and material mixed more evenly, avoiding the accumulation of material agglomerates in the mixing chamber 111, and thus avoiding the use of the equipment affected by the accumulation.

[0031] Preferably, the shell 11 is made of carbon steel, and the inner wall of the mixing chamber 111 is provided with a ceramic bushing to improve corrosion resistance, thereby improving the reliability of the acid mixer.

[0032] In one embodiment, the housing 11 is further provided with a feed port 112 and a discharge port 113 connected to the mixing chamber 111. The feed port 112 is used for inputting materials, and the discharge port 113 is used for discharging the materials after sufficient mixing and reaction. In order to facilitate the input and discharge of materials, the feed port 112 is located at the top of the housing 11, and the discharge port 113 is located at the bottom of the housing 11.

[0033] Furthermore, the discharge port 113 penetrates the bottom wall of the mixing chamber 111, and the level of the discharge port 113 is lower than the level of other positions of the bottom wall of the mixing chamber 111, so that the material in the mixing chamber 111 flows to the discharge port 113 under the action of gravity, which facilitates the discharge of the material. Figure 1 In the illustrated embodiment, the discharge port 113 is located at one end of the bottom wall of the mixing chamber 111 , and the level of the bottom wall of the mixing chamber 111 gradually increases from the end to the other end.

[0034] It is understandable that in order to prevent the material or sulfuric acid from splashing or leaking during the mixing process of the material and sulfuric acid, valves are provided at the feed inlet 112 and the discharge outlet 113 .

[0035] In one embodiment, the housing 11 is further provided with an inspection port 114 connected to the mixing chamber 111. The inspection port 114 is located at the top of the housing 11, and is used for maintenance personnel to observe the internal conditions of the mixing chamber 111 and to repair the structure in the mixing chamber 111. It should be noted that the inspection port 114 is covered with a transparent cover to facilitate observation while preventing internal materials or sulfuric acid from splashing out.

[0036] In one embodiment, the acid mixer further includes a plurality of first one-way valves 121, each of which is disposed at a corresponding first spray hole to prevent the medium in the mixing chamber 111 from flowing back into the first rotating shaft 12. It can be determined that in the above embodiment, sulfuric acid is input into the mixing chamber 111 through the first spray hole, so the flow direction of the first one-way valve 121 is toward the mixing chamber 111, thereby preventing the liquid in the mixing chamber 111 from flowing back.

[0037] In one embodiment, the acid mixer further includes a second rotating shaft 13, which is rotatably connected to the housing 11 and parallel to the first rotating shaft 12. The second rotating shaft 13 is hollow, and a portion of the second rotating shaft 13 located in the mixing chamber 111 is provided with a plurality of second spray holes, each of which is used to connect the mixing chamber 111 with the interior of the second rotating shaft 13. At the same time, one end of the second rotating shaft 13 extending out of the housing 11 is also connected to the acid supply mechanism, and the acid supply mechanism is connected to the interior of the second rotating shaft 13. In this way, sulfuric acid can be input into the mixing chamber 111 through the two rotating shafts, further improving the uniformity of sulfuric acid distribution, thereby improving the uniformity of sulfuric acid and material mixing.

[0038] It should be noted that the acid supply mechanism includes two rotary joints 14, which are rotatably connected to the first rotating shaft 12 and the second rotating shaft 13 respectively, so as to avoid rotating with the first rotating shaft 12 and the second rotating shaft 13 while being connected to the inside of the first rotating shaft 12 and the second rotating shaft 13. In addition, it can be understood that the same end of the first rotating shaft 12 and the second rotating shaft 13 is connected to the rotary joint 14, such as Figure 1 As shown, the right ends of the first rotating shaft 12 and the second rotating shaft 13 are penetrated and connected to the rotating joint 14, and the other end (i.e., the left end) is in a closed state. It needs to be further explained that the rotating joint 14 adopts a dynamic ring and a static ring to achieve sealing and rotatable connection, and the dynamic ring and the static ring are made of SSiC (sintering silicon carbide) material to extend the service life.

[0039] Furthermore, the acid mixer further includes a plurality of second one-way valves 131, each of which is disposed at a corresponding second spray hole to prevent the medium in the mixing chamber 111 from flowing back into the second rotating shaft 13. It can be determined that the function of the second one-way valve 131 is the same as that of the first one-way valve 121, and will not be described in detail here.

[0040] In one embodiment, the acid mixer further includes a plurality of stirring blades 15, which are respectively arranged on the first rotating shaft 12 and the second rotating shaft 13 located in the mixing chamber 111, so as to stir the material and sulfuric acid during the rotation of the first rotating shaft 12 and the second rotating shaft 13, so that the sulfuric acid and the material are evenly mixed.

[0041] Furthermore, each stirring blade 15 is detachably connected to the first rotating shaft 12 or the second rotating shaft 13, so that when the stirring blade 15 is damaged, it can be replaced individually without removing the entire rotating shaft for replacement, which facilitates subsequent maintenance and reduces maintenance costs.

[0042] In one embodiment, the acid mixer further includes a sealing assembly, which is used to seal the connection between the housing 11 and the first rotating shaft 12 and the housing 11 and the second rotating shaft 13 to ensure the sealing of the mixing chamber 111 and prevent leakage of materials and sulfuric acid in the mixing chamber 111.

[0043] Specific to Figure 1 In the illustrated embodiment, the sealing assembly includes four shaft sealing structures 16, two of which are arranged between the first rotating shaft 12 and the housing 11, and the other two are arranged between the second rotating shaft 13 and the housing 11. The shaft sealing structures 16 are conventional mechanical seals, which will not be described in detail herein.

[0044] In one embodiment, the acid mixer further includes a spray assembly, which is connected to the housing 11 and at least partially extends into the top of the mixing chamber 111, and the acid supply mechanism is connected to the spray assembly to spray sulfuric acid into the mixing chamber 111 through the spray assembly. In this way, sulfuric acid is simultaneously input into the mixing chamber 111 through the first rotating shaft 12, the second rotating shaft 13 and the spray assembly, thereby improving the input efficiency of sulfuric acid. It can be understood that the first rotating shaft 12 and the second rotating shaft 13 can ensure the uniformity of sulfuric acid distribution and improve the uniformity of sulfuric acid and material mixing, while the spray assembly can improve the efficiency of sulfuric acid input to a certain extent.

[0045] Specific to Figure 1 In the illustrated embodiment, the spray assembly includes a connecting pipe 171 and a plurality of nozzles 172. One end of the connecting pipe 171 is located outside the shell 11 to be connected to the acid supply mechanism, and the other end extends into the mixing chamber 111 and is connected to the plurality of nozzles 172. The plurality of nozzles 172 are arranged at the top of the mixing chamber 111.

[0046] In one embodiment, the acid mixer further includes a driving member 181 and a transmission member 182, wherein the driving member 181 is connected to the first rotating shaft 12 or the second rotating shaft 13, and the transmission member 182 is connected between the first rotating shaft 12 and the second rotating shaft 13, so that the first rotating shaft 12 and the second rotating shaft 13 rotate synchronously, thereby driving the first rotating shaft 12 and the second rotating shaft 13 to rotate synchronously through the driving member 181.

[0047] Preferably, the driving member 181 is a variable frequency motor, and the driving member 181 is connected to an end of the first rotating shaft 12 away from the acid supply mechanism, and the transmission member 182 is a reducer.

[0048] In order to facilitate understanding of the technical solution of this application, Figure 1 The working process of the acid mixing machine in the above embodiment is described as follows:

[0049] The driving member 181 is started, and the driving member 181 drives the first rotating shaft 12 and the second rotating shaft 13 to rotate synchronously. The feed port 112 is opened, and the calcined powdered spodumene material is added into the mixing chamber 111 through the feed port 112, and then the feed port 112 is closed. The acid supply mechanism sprays sulfuric acid into the mixing chamber 111 through the spray mechanism and the first rotating shaft 12 and the second rotating shaft 13. During the rotation of the first rotating shaft 12 and the second rotating shaft 13, the stirring blade 15 stirs the sulfuric acid and the material so that the material and the sulfuric acid are fully mixed and reacted. After the sufficient mixing reaction, the discharge port 113 is opened to discharge the mixture in the mixing chamber 111.

[0050] It should be noted that the radial dimensions of the internal cavity of the first rotating shaft 12 and the internal cavity of the second rotating shaft 13 can be determined according to the acid inlet flow rate; similarly, the number and aperture of the first spray holes and the second spray holes can also be determined according to the acid inlet flow rate.

[0051] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A mixed acid machine, characterized in that: include: a housing having a mixing chamber; A first rotating shaft is rotatably connected to the housing, the first rotating shaft is hollow, and a portion of the first rotating shaft located in the mixing chamber is provided with a plurality of first spray holes, each of the first spray holes is used to connect the mixing chamber with the interior of the first rotating shaft; The acid supply mechanism is rotatably connected to one end of the first rotating shaft extending out of the mixing chamber, and is communicated with the interior of the first rotating shaft.

2. The acid mixing machine according to claim 1, characterized in that: It also includes a plurality of first one-way valves, each of which is disposed at a corresponding first spray hole.

3. The acid mixing machine according to claim 1, characterized in that: It also includes a second rotating shaft, which is rotatably connected to the housing and parallel to the first rotating shaft, the second rotating shaft is hollow, and a portion of the second rotating shaft located in the mixing chamber is provided with a plurality of second spray holes, each of the second spray holes is used to communicate the mixing chamber with the interior of the second rotating shaft; The acid supply mechanism is rotatably connected to one end of the second rotating shaft extending out of the shell, and is communicated with the interior of the second rotating shaft.

4. The acid mixing machine according to claim 3, characterized in that: It also includes a plurality of second one-way valves, each of which is disposed at a corresponding second spray hole.

5. The acid mixing machine according to claim 3, characterized in that: It also includes a plurality of stirring blades, which are respectively arranged on the first rotating shaft and the second rotating shaft at the part of the mixing chamber, and each of the stirring blades is detachably connected to the first rotating shaft or the second rotating shaft.

6. The acid mixing machine according to claim 3, characterized in that: It also includes a driving member and a transmission member, wherein the driving member is connected to the first rotating shaft or the second rotating shaft, and the transmission member is connected between the first rotating shaft and the second rotating shaft to enable the first rotating shaft and the second rotating shaft to rotate synchronously.

7. The acid mixing machine according to claim 1, characterized in that: It also includes a spray assembly, which is connected to the shell and at least partially extends into the top of the mixing chamber, and the acid supply mechanism is connected to the spray assembly.

8. The acid mixing machine according to claim 1, characterized in that: The shell is also provided with a feed inlet and a discharge outlet which are connected with the mixing chamber. The feed inlet is located at the top of the shell, and the discharge outlet is located at the bottom of the shell.

9. The acid mixing machine according to claim 8, characterized in that: The discharge port penetrates through the bottom wall of the mixing chamber, and the level of the discharge port is lower than the level of other positions of the bottom wall of the mixing chamber.

10. The acid mixing machine according to claim 8, characterized in that: The shell is also provided with an inspection port communicating with the mixing chamber, and the inspection port is located at the top of the shell.

Images