A purification system and purification method of stannous octoate

Abstract

The invention discloses a purification system and purification method of stannous octoate, including a sedimentation separation tank and a washing tank, wherein the sedimentation separation tank is tilted and rotated to be installed on the top of a support base, one end of the sedimentation separation tank is provided with a feed port, the other end of the sedimentation separation tank is rotatably connected with a discharge port, the horizontal height of one side of the discharge port is less than the horizontal height of one side of the feed port, and a filter is fixed on the discharge port, a filtrate discharge port is connected to the filter, a flushing liquid discharge port is also connected to the discharge port, the discharge port and the filter are fixed to the support base through a first support frame, a filter element is installed inside the filter, and a filter element replacement port is provided. The present invention can remove tetravalent tin compound impurities through the sedimentation separation tank, and then remove stannous chloride impurities after multiple water washings, thereby completing purification, and can effectively improve the purity of the product and improve the quality of the product.

Description

Technical Field

[0001] The invention relates to the technical field of stannous octoate purification, in particular to a stannous octoate purification system and a purification method thereof. Background Art

[0002] Many organic metal compounds, such as alkyl compounds and carboxylates of lead, tin, titanium, antimony, mercury, zinc, bismuth, zirconium, aluminum, etc., have catalytic activity for the reaction between isocyanate and hydroxyl groups. However, in the production of polyurethane foam, the important ones are tin organic compounds, especially stannous octoate, which has a wide range of applications and can be used in polyurethane foam, adhesives, elastomers, etc.

[0003] In the field of polyurethane, stannous octoate is mainly used as a polyurethane catalyst, mainly in the production of soft block polyether polyurethane foam plastics. It can also be used as a catalyst for polyurethane coatings, elastomers, room temperature curing silicone rubber, etc.

[0004] Since the chemical valence of the key element tin in the product stannous octoate is divalent, which is an unstable intermediate valence state of tin, in the actual production process, the presence of oxidants (air, chlorine, sulfuric acid, etc.) may easily cause the substance stannous octoate to undergo an oxidation reaction to generate stannous octoate, in which the divalent tin is oxidized to a tetravalent metal valence state. Although tetravalent tin compounds can be used as antioxidants, these substances will greatly reduce their foaming activity and significantly reduce the content of stannous octoate. In addition, in the production process of this product, due to different chemical processes, in the process of synthesizing stannous octoate from stannous chloride as raw material, there will also be unreacted metal elements in the raw material stannous chloride, resulting in a low product content. At the same time, a high content of stannous octoate has an important impact on the service life, environmental protection, and safety of the product. Summary of the invention

[0005] In order to solve the problems mentioned in the above background technology, the present invention provides a purification system and a purification method of stannous octoate.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A stannous octoate purification system comprises a precipitation separation tank and a water washing tank, wherein the precipitation separation tank is tilted and rotatably installed on the top of a supporting base, one end of the precipitation separation tank is provided with a feed port, the other end of the precipitation separation tank is rotatably connected with a discharge port, the horizontal height of one side of the discharge port is smaller than the horizontal height of one side of the feed port, a filter is fixed on the discharge port, the filter is connected with a filtrate discharge port, and the discharge port is also connected with a flushing liquid discharge port.

[0008] Preferably, the filter is fixed to the support base via a first support frame, a filter element is installed inside the filter, and a filter element replacement port is provided.

[0009] Preferably, a bevel gear ring is fixed to the outside of the sedimentation separation tank, a first rotating motor is fixed to the top of the supporting base through a second supporting frame, a first bevel gear is fixed to the output end of the first rotating motor, and the first bevel gear is meshed with the bevel gear ring.

[0010] Preferably, a plurality of circular stirring disks are evenly distributed inside the sedimentation separation tank, a plurality of leakage holes are opened on the circular stirring disks, the circular stirring disks are rotatably installed inside the sedimentation separation tank, and a rotating shaft on one side of the circular stirring disks extends to the outside of the sedimentation separation tank and is fixed with a spur gear.

[0011] Preferably, a connecting cross bar is fixed to the top of the support base through a third support frame, a plurality of spur gear rings are fixed on the connecting cross bar, and the plurality of spur gear rings are meshed with the plurality of spur gears in a one-to-one correspondence.

[0012] Preferably, a first rotating shaft is installed on the circular stirring disk, and both ends of the first rotating shaft extend to both sides of the circular stirring disk respectively, and a scraper is fixed to one end of the first rotating shaft close to the feed port, and a second bevel gear is fixed to the other end of the first rotating shaft, the second bevel gear is located in the protective cover, and a second rotating shaft is rotatably installed on the protective cover, and a third bevel gear is fixed to one end of the second rotating shaft, and the third bevel gear is meshed with the second bevel gear.

[0013] Preferably, a first arc plate is fixed to the other end of the second rotating shaft, a second rotating motor is fixed on the outer wall of the sedimentation separation tank, the output end of the second rotating motor is connected to a driving shaft, the driving shaft extends to the interior of the sedimentation separation tank and is respectively fixed with a second arc plate and a third arc plate, and the first arc plate extends between the second arc plate and the third arc plate.

[0014] Preferably, the top of the water washing tank is respectively provided with a material addition port and a water inlet, the bottom of the water washing tank is provided with a discharge port, the water washing tank also includes a circulating pump, the liquid inlet pipe of the circulating pump is connected with the discharge port, the liquid outlet pipe of the circulating pump is connected with the water inlet, and a water adding branch pipe is also provided on the liquid outlet pipe.

[0015] Preferably, a heat-insulating interlayer is provided on the water-washing tank, a heat medium inlet pipe is provided on one side of the water-washing tank, and a heat medium outlet pipe is provided on the other side of the water-washing tank, and the heat medium inlet pipe and the heat medium outlet pipe are connected to the heat-insulating interlayer.

[0016] Preferably, a guide baffle is fixed inside the thermal insulation interlayer, and the guide baffle extends in a spiral shape.

[0017] Preferably, an agitator is rotatably mounted on the inner wall of the top end of the water washing tank, a plurality of agitation branches are fixed on the agitator, and the agitator is driven to rotate by a third rotating motor mounted on the top end of the water washing tank.

[0018] Preferably, an annular mounting frame is installed inside the washing tank near the top position, an annular tube is fixedly installed on the annular mounting frame, an annular notch is opened on the inner side of the annular tube, and a retaining ring corresponding to the annular notch is provided inside the annular tube, a plurality of horizontal drainage pipes are fixed on the inner side of the retaining ring, one end of the horizontal drainage pipe close to the agitator passes through the annular notch and is fixed to the agitator, and the annular tube is connected to the water inlet.

[0019] Preferably, a vertical drainage pipe is installed at the bottom end of the horizontal drainage pipe, a plurality of drainage branches are fixed on the vertical drainage pipe, and a plurality of drainage holes are opened on the drainage branches.

[0020] A method for purifying stannous octoate comprises the following steps:

[0021] S1: adding stannous octoate containing impurities into the sedimentation separation tank through the feed port, and adding a tetravalent tin flocculant, turning on the first rotating motor to drive the sedimentation separation tank to rotate as a whole, and accelerating the dispersion of the flocculant;

[0022] S2: After the flocculation is fully completed, the material is discharged from the discharge port, the solid is filtered out through the filter, and the liquid is discharged from the filtrate discharge port and transported to the washing tank;

[0023] S3: The material is added into the water washing tank through the material adding port, pure water is added into the water washing tank through the water adding branch pipe, the mixed liquid is pumped out from the discharge port through the circulation pump, and is injected back into the water washing tank from the water inlet, and stirred by the agitator;

[0024] S4: After multiple cycles of washing, the mixture is left to stand for a period of time. After complete stratification, the lower layer of stannous octoate is discharged first, and then the upper layer of aqueous solution is discharged to complete one water washing. After three to four water washings, the purification is completed.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. Add stannous octoate containing impurities into the sedimentation separation tank through the feed port, and add a tetravalent tin flocculant. After the flocculation is fully completed, the material is discharged from the discharge port, the solid is filtered through the filter, and the liquid is discharged from the filtrate discharge port and transported to the water washing tank. Since the sedimentation separation tank is installed at an angle, the material can be discharged by gravity, and the tetravalent tin compound impurities can be removed through the sedimentation separation tank. After multiple water washings, the stannous chloride impurities are removed, thereby completing the purification, which can effectively improve the purity of the product and improve the quality of the product;

[0027] 2. The solids flocculated by the flocculant are filtered out through the filter. The filter element can be regularly removed and cleaned and replaced to ensure that the filtering effect will not be reduced. Since the discharge port and the filter as a whole are rotatably connected to the sedimentation separation tank, the discharge port and the filter will not rotate with the sedimentation separation tank during rotation, thereby ensuring that the connection between the filtrate discharge port and the flushing liquid discharge port and the pipeline will not be affected during the rotation of the sedimentation separation tank;

[0028] 3. The first rotating motor can drive the first bevel gear to rotate, thereby driving the sedimentation separation tank to rotate as a whole through the meshing of the first bevel gear and the bevel gear ring, thereby driving the mixed liquid to shake and mix in the sedimentation separation tank through the action of gravity, thereby accelerating the mixing speed between the flocculant and the solution and improving the flocculation efficiency;

[0029] 4. During the self-rotation of the sedimentation separation tank, since the spur gear ring is fixed relative to the supporting base, the spur gear will continuously move along the spur gear ring during the rotation of the sedimentation separation tank inside the spur gear ring, thereby driving the circular stirring plate to continuously flip inside the sedimentation separation tank, thereby achieving a stirring effect, further improving the mixing rate of the flocculant and the solution, accelerating flocculation, and no additional power device is required, which is more energy-saving and environmentally friendly;

[0030] 5. After flocculation is completed, when discharging the liquid, the circular stirring plate can be adjusted to a state perpendicular to the direction of liquid flow ( Figure 4 In the middle state), during the process of releasing the liquid, most of the solid impurities will be filtered through the circular stirring disk and remain on the side of the circular stirring disk close to the feed inlet. The circular stirring disk can not only play the stirring function but also pre-filter the material, thereby reducing the filtering pressure of the filter and preventing the occurrence of the phenomenon that the filtering efficiency is reduced due to the accumulation of solid impurities in the filter position;

[0031] 6. Turning on the second rotating motor can drive the scraper to actively clean the surface of the circular stirring plate without affecting the rotation of the circular stirring plate;

[0032] 7. By introducing heat medium into the insulation interlayer, the material is kept warm, thereby increasing the solubility of the impurity stannous chloride in water, so that the stannous chloride can be extracted and separated more efficiently;

[0033] 8. The liquid that flows into the washing tank through the water inlet first enters the annular pipe, then disperses into each horizontal drainage pipe, and then disperses into the drainage branch through the vertical drainage pipe, and then dispersedly discharged from the drainage hole. This method can greatly improve the dispersion of the liquid, thereby accelerating the washing process. Since the horizontal drainage pipe and the agitator are fixed, the horizontal drainage pipe, baffle ring, vertical drainage pipe and drainage branch will all rotate with the agitator, thereby playing a role in auxiliary stirring and improving the stirring effect. The position of the drainage hole will also change continuously, which can further improve the dispersion of the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a front view of the sedimentation separation tank of the present invention;

[0036] Figure 2 It is a three-dimensional diagram of the sedimentation separation tank of the present invention;

[0037] Figure 3 It is a three-dimensional cross-sectional view of the sedimentation separation tank of the present invention;

[0038] Figure 4 This is a first-view enlarged detail view of the position of the circular stirring plate in the sedimentation separation tank of the present invention;

[0039] Figure 5 It is a second perspective enlarged detail view of the position of the circular stirring plate in the sedimentation separation tank of the present invention;

[0040] Figure 6 It is an exploded view of the first perspective of the docking position of the driving shaft and the second rotating shaft of the present invention;

[0041] Figure 7 It is an exploded view of the second viewing angle of the docking position of the driving shaft and the second rotating shaft of the present invention;

[0042] Figure 8 It is a three-dimensional diagram of the water washing tank of the present invention;

[0043] Fig. 9 It is a three-dimensional cross-sectional view of the water washing tank of the present invention;

[0044] Fig.10 It is a three-dimensional cross-sectional view of the water washing tank of the present invention (the guide baffle is omitted);

[0045] Fig.11 for Fig.10 A zoomed-in detail of position A in the middle;

[0046] Fig.12 This is an enlarged detail view of the annular tube position of the present invention;

[0047] In the figure: 1 sedimentation separation tank, 101 discharge port, 102 filter, 103 flushing liquid discharge port, 104 filtrate discharge port, 105 feed port, 106 bevel gear ring, 2 support base, 201 second support frame, 202 first support frame, 203 third support frame, 204 connecting cross bar, 205 spur gear ring, 3 first rotating motor, 301 first bevel gear, 4 circular stirring plate, 401 leakage hole, 402 spur gear, 403 first rotating shaft, 404 second bevel gear, 405 scraper, 406 second rotating shaft, 407 third bevel gear, 408 first arc plate, 5 second rotating motor, 501 driving shaft, 502 second arc plate, 503 third arc plate, 6 washing tank, 601 water inlet, 602 material adding port, 603 discharge port, 604 thermal insulation interlayer, 605 heat medium inlet pipe, 606 heat medium discharge pipe, 607 guide baffle, 7 agitator, 701 third rotating motor, 702 stirring branch, 8 circulating pump, 801 liquid inlet pipe, 802 liquid outlet pipe, 803 water adding branch pipe, 9 annular mounting frame, 901 annular pipe, 902 annular notch, 903 retaining ring, 904 horizontal drainage pipe, 905 vertical drainage pipe, 906 drainage branch, 907 drainage hole. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0049] Reference Figure 1-12 A stannous octoate purification system comprises a precipitation separation tank 1 and a water washing tank 6, wherein the precipitation separation tank 1 is tilted and rotatably mounted on the top of a supporting base 2, wherein a feed port 105 is arranged at one end of the precipitation separation tank 1, and a discharge port 101 is rotatably connected to the other end of the precipitation separation tank 1, wherein a horizontal height of one side of the discharge port 101 is less than a horizontal height of one side of the feed port 105, and a filter 102 is fixed on the discharge port 101, a filtrate discharge port 104 is connected to the filter 102, and a flushing liquid discharge port 103 is also connected to the discharge port 101;

[0050] Stannous octoate containing impurities is added into the sedimentation separation tank 1 through the feed port 105, and a tetravalent tin flocculant is added. After flocculation is fully completed, the material is discharged from the discharge port 101, the solid is filtered out through the filter 102, and the liquid is discharged from the filtrate discharge port 104 and transported to the washing tank 6. Since the sedimentation separation tank 1 is installed at an angle, the material can be discharged by gravity, and the tetravalent tin compound impurities can be removed through the sedimentation separation tank 1. After multiple water washings, the stannous chloride impurities are removed, thereby completing the purification, which can effectively improve the purity of the product and improve the quality of the product.

[0051] The filter 102 is fixed to the support base 2 via the first support frame 202, a filter element is installed inside the filter 102, and a filter element replacement port is provided;

[0052] The solids flocculated by the flocculant are filtered out through the filter 102, and the filter element can be regularly removed and cleaned and replaced to ensure that the filtering effect will not be reduced. Since the discharge port 101 and the filter 102 are rotatably connected to the sedimentation separation tank 1 as a whole, the discharge port 101 and the filter 102 will not rotate with the sedimentation separation tank 1 during its rotation, thereby ensuring that the rotation of the sedimentation separation tank 1 will not affect the connection between the filtrate discharge port 104 and the flushing liquid discharge port 103 and the pipeline. Example 2

[0053] Reference Figure 1-12 The difference between this embodiment and embodiment 1 is that a bevel gear ring 106 is fixed to the outside of the sedimentation separation tank 1, a first rotating motor 3 is fixed to the top of the supporting base 2 through a second supporting frame 201, a first bevel gear 301 is fixed to the output end of the first rotating motor 3, and the first bevel gear 301 is meshed with the bevel gear ring 106;

[0054] The first rotating motor 3 can drive the first bevel gear 301 to rotate, thereby driving the sedimentation separation tank 1 to rotate as a whole through the engagement of the first bevel gear 301 and the bevel gear ring 106, thereby driving the mixed liquid to shake and mix in the sedimentation separation tank 1 through the action of gravity, thereby accelerating the mixing speed between the flocculant and the solution and improving the flocculation efficiency. Example 3

[0055] Reference Figure 1-12The difference between this embodiment and embodiment 2 is that a plurality of circular stirring disks 4 are evenly distributed inside the sedimentation separation tank 1, a plurality of leak holes 401 are opened on the circular stirring disk 4, the circular stirring disk 4 is rotatably installed inside the sedimentation separation tank 1, and a rotating shaft on one side of the circular stirring disk 4 extends to the outside of the sedimentation separation tank 1 and is fixed with a spur gear 402, a connecting cross bar 204 is fixed to the top of the support base 2 through a third support frame 203, a plurality of spur gear rings 205 are fixed on the connecting cross bar 204, and the plurality of spur gear rings 205 are meshed with the plurality of spur gears 402 one by one;

[0056] During the self-rotation of the sedimentation separation tank 1, since the spur gear ring 205 is fixed relative to the supporting base 2, the spur gear 402 will continuously move along the spur gear ring 205 during the rotation of the sedimentation separation tank 1 inside the spur gear ring 205, thereby driving the circular stirring disk 4 to continuously flip inside the sedimentation separation tank 1, thereby achieving a stirring effect, further improving the mixing rate of the flocculant and the solution, accelerating flocculation, and no additional power device is required, which is more energy-saving and environmentally friendly;

[0057] After flocculation is completed, when discharging the liquid, the circular stirring disk 4 can be adjusted to a state perpendicular to the liquid flow direction ( Figure 4 In the middle state), during the process of releasing the liquid, most of the solid impurities will be filtered through the circular stirring disk 4 and remain on the side of the circular stirring disk 4 close to the feed inlet 105. The circular stirring disk 4 can not only perform the stirring function but also pre-filter the material, thereby reducing the filtering pressure of the filter 102 and preventing the occurrence of the phenomenon that the filtering efficiency is reduced due to the accumulation of solid impurities at the filter 102 position.

[0058] When it is necessary to flush the interior of the sedimentation separation tank 1 and discharge solid impurities, the circular stirring disk 4 is adjusted to a state parallel to the liquid flow direction, and the interior of the sedimentation separation tank 1 and the circular stirring disk 4 are flushed with cleaning liquid to carry away the solid impurities and discharge them through the flushing liquid discharge port 103. Example 4

[0059] Reference Figure 1-12, the difference between this embodiment and embodiment 3 is that a first rotating shaft 403 is installed on the circular stirring disk 4, and the two ends of the first rotating shaft 403 extend to the two sides of the circular stirring disk 4 respectively, and a scraper 405 is fixed to one end of the first rotating shaft 403 close to the feed port 105, and a second bevel gear 404 is fixed to the other end of the first rotating shaft 403, and the second bevel gear 404 is located in the protective cover, and a second rotating shaft 406 is rotatably installed on the protective cover, and a third bevel gear 407 is fixed to one end of the second rotating shaft 406, and the third bevel gear 407 is meshed with the second bevel gear 404, and a first arc plate 408 is fixed to the other end of the second rotating shaft 406, and a second rotating motor 5 is fixed to the outer wall of the sedimentation separation tank 1, and the output end of the second rotating motor 5 is connected to a driving shaft 501, and the driving shaft 501 extends to the interior of the sedimentation separation tank 1 and is respectively fixed with a second arc plate 502 and a third arc plate 503, and the first arc plate 408 extends between the second arc plate 502 and the third arc plate 503;

[0060] The second rotating motor 5 can drive the second arc plate 502 and the third arc plate 503 to rotate. When the second arc plate 502 and the third arc plate 503 rotate to a certain state, the arc center points of the second arc plate 502 and the third arc plate 503 coincide with the mounting shaft of the circular stirring disk 4. At this time, the arc center point of the first arc plate 408 coincides with the mounting shaft of the circular stirring disk 4. In this state, when the first arc plate 408 rotates with the circular stirring disk 4 as a whole, the first arc plate 408 will happen to pass between the second arc plate 502 and the third arc plate 503, thereby ensuring that the three will not interfere with each other, and there is a certain damping between the first rotating shaft 403 and the circular stirring disk 4, ensuring that during the rotation of the circular stirring disk 4, the first rotating shaft 403 will not rotate due to the action of fluid pressure and inertia, and ensuring that the first arc plate 408 will not deflect arbitrarily;

[0061] When it is necessary to actively clean the solid impurities on the surface of the circular stirring disk 4, first stop the circular stirring disk 4 Figure 4 state, at this time, it is ensured that the first arc plate 408 is just sandwiched between the second arc plate 502 and the third arc plate 503. At this time, turning on the second rotating motor 5 can drive the second arc plate 502 and the third arc plate 503 to rotate, and the second arc plate 502 and the third arc plate 503 will rotate while clamping the first arc plate 408, thereby driving the second rotating shaft 406 to rotate, and the third bevel gear 407 is engaged with the second bevel gear 404 to drive the scraper 405 to actively clean the surface of the circular stirring disk 4. After the cleaning is completed, it is necessary to ensure that the second arc plate 502, the third arc plate 503 and the first arc plate 408 stop in a state where the center points of the three arcs coincide with the rotating shaft of the circular stirring disk 4, so as to ensure that the rotation of the circular stirring disk 4 is not affected, thereby achieving the effect of actively cleaning the circular stirring disk 4 without affecting the rotation of the circular stirring disk 4 itself. Example 5

[0062] Reference Figure 1-12 The difference between this embodiment and embodiment 1 is that the top of the water washing tank 6 is respectively provided with a material adding port 602 and a water inlet 601, the bottom of the water washing tank 6 is provided with a discharge port 603, the water washing tank 6 also includes a circulation pump 8, the liquid inlet pipe 801 of the circulation pump 8 is connected with the discharge port 603, the liquid outlet pipe 802 of the circulation pump 8 is connected with the water inlet 601, and the liquid outlet pipe 802 is also provided with a water adding branch pipe 803;

[0063] The material after one purification is added into the water washing tank 6 through the material adding port 602, and pure water is added into the water washing tank 6 through the water adding branch pipe 803. The mixed liquid is pumped out from the discharge port 603 through the circulating pump 8 and injected back into the water washing tank 6 from the water inlet 601, so that the mixed material can be circulated and washed, thereby improving the washing efficiency.

[0064] The water washing tank 6 is provided with a heat insulation interlayer 604, a heat medium inlet pipe 605 is provided on one side of the water washing tank 6, and a heat medium outlet pipe 606 is provided on the other side of the water washing tank 6. The heat medium inlet pipe 605 and the heat medium outlet pipe 606 are connected to the heat insulation interlayer 604;

[0065] By introducing heat medium into the heat-insulating interlayer 604, the material is kept warm, thereby increasing the solubility of the impurity stannous chloride in water, so that the stannous chloride can be extracted and separated more efficiently.

[0066] A guide baffle 607 is fixed inside the heat-insulating interlayer 604, and the guide baffle 607 extends in a spiral shape;

[0067] The flow guide baffle 607 can extend the distance that the heat medium flows inside the thermal insulation interlayer 604 and increase the residence time of the heat medium in the thermal insulation interlayer 604, thereby improving the thermal insulation effect.

[0068] Among them, a stirrer 7 is rotatably mounted on the inner wall of the top of the water washing tank 6, and a plurality of stirring branches 702 are fixed on the stirrer 7. The stirrer 7 is driven to rotate by a third rotating motor 701 installed on the top of the water washing tank 6;

[0069] The stirrer 7 can be driven to stir the material, thereby accelerating the dissolution of stannous chloride into water and improving the extraction and separation efficiency of stannous chloride.

[0070] Among them, an annular mounting frame 9 is installed near the top position inside the washing tank 6, and an annular mounting frame 9 is fixedly installed with an annular tube 901. An annular notch 902 is opened on the inner side of the annular tube 901, and a retaining ring 903 corresponding to the annular notch 902 is arranged inside the annular tube 901. A plurality of horizontal drainage pipes 904 are fixed on the inner side of the retaining ring 903. One end of the horizontal drainage pipe 904 close to the agitator 7 passes through the annular notch 902 and is fixed to the agitator 7. The annular tube 901 is connected with the water inlet 601. A vertical drainage pipe 905 is installed at the bottom end of the horizontal drainage pipe 904, and a plurality of drainage branches 906 are fixed on the vertical drainage pipe 905. A plurality of drainage holes 907 are opened on the drainage branch 906.

[0071] The liquid flowing into the washing tank 6 through the water inlet 601 first enters the annular tube 901, and then disperses into each horizontal drainage tube 904, and then disperses into the drainage branch 906 through the vertical drainage tube 905, and then dispersedly discharged from the drainage hole 907. This method can greatly improve the dispersion of the liquid, thereby accelerating the washing process, and because the horizontal drainage tube 904 and the agitator 7 are fixed, the horizontal drainage tube 904, the baffle ring 903, the vertical drainage tube 905 and the drainage branch 906 will all rotate with the agitator 7, thereby playing a role in auxiliary stirring and improving the stirring effect, and the position of the drainage hole 907 will also change constantly, which can further improve the dispersion of the liquid. Example 6

[0072] A method for purifying stannous octoate comprises the following steps:

[0073] S1: adding stannous octoate containing impurities into the sedimentation separation tank 1 through the feed port 105, and adding a tetravalent tin flocculant, turning on the first rotating motor 3 to drive the sedimentation separation tank 1 to rotate as a whole, and accelerating the dispersion of the flocculant;

[0074] S2: After the flocculation is fully completed, the material is discharged from the discharge port 101, the solid is filtered out through the filter 102, and the liquid is discharged from the filtrate discharge port 104 and transported to the washing tank 6;

[0075] S3: The material is added into the water washing tank 6 through the material adding port 602, and pure water is added into the water washing tank 6 through the water adding branch pipe 803. The mixed liquid is pumped out from the discharge port 603 through the circulation pump 8, and is injected back into the water washing tank 6 from the water inlet 601, and is stirred by the stirrer 7;

[0076] S4: After multiple cycles of washing, the mixture is left to stand for a period of time. After complete stratification, the lower layer of stannous octoate is discharged first, and then the upper layer of aqueous solution is discharged to complete one water washing. After three to four water washings, the purification is completed.

[0077] 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 limiting the present invention.

[0078] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0080] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stannous octoate purification system, comprising a precipitation separation tank (1) and a water washing tank (6), characterized in that: The sedimentation separation tank (1) is tiltably mounted on the top of the support base (2); one end of the sedimentation separation tank (1) is provided with a feed port (105); the other end of the sedimentation separation tank (1) is rotatably connected to a discharge port (101); the horizontal height of one side of the discharge port (101) is less than the horizontal height of one side of the feed port (105); a filter (102) is fixed on the discharge port (101); a plurality of circular stirring discs (4) are evenly distributed inside the sedimentation separation tank (1); and the circular stirring discs (4) are provided with a plurality of circular stirring discs (4). A plurality of leakage holes (401) are provided, a circular stirring disc (4) is rotatably mounted inside the sedimentation separation tank (1), and a rotating shaft on one side of the circular stirring disc (4) extends to the outside of the sedimentation separation tank (1) and is fixed with a spur gear (402), a connecting cross bar (204) is fixed to the top of the support base (2) via a third support frame (203), a plurality of spur gear rings (205) are fixed on the connecting cross bar (204), and the plurality of spur gear rings (205) are meshed with the plurality of spur gears (402) in a one-to-one correspondence; A first rotating shaft (403) is mounted on the circular stirring disc (4), two ends of the first rotating shaft (403) respectively extend to two sides of the circular stirring disc (4), and a scraper (405) is fixed to one end of the first rotating shaft (403) close to the feed port (105), a second bevel gear (404) is fixed to the other end of the first rotating shaft (403), the second bevel gear (404) is located in the protective cover, and a second rotating shaft (406) is rotatably mounted on the protective cover, a third bevel gear (407) is fixed to one end of the second rotating shaft (406), and the third bevel gear (407) is meshed with the second bevel gear (404); A first arc plate (408) is fixed to the other end of the second rotating shaft (406); a second rotating motor (5) is fixed to the outer wall of the sedimentation separation tank (1); an output end of the second rotating motor (5) is connected to a drive shaft (501); the drive shaft (501) extends to the interior of the sedimentation separation tank (1) and is respectively fixed with a second arc plate (502) and a third arc plate (503); and the first arc plate (408) extends between the second arc plate (502) and the third arc plate (503); The second rotating motor (5) can drive the second arc plate (502) and the third arc plate (503) to rotate. When the second arc plate (502) and the third arc plate (503) rotate to a certain state, the arc center points of the second arc plate (502) and the third arc plate (503) coincide with the mounting shaft of the circular stirring plate (4). At this time, the arc center point of the first arc plate (408) coincides with the mounting shaft of the circular stirring plate (4). In this state, when the first arc plate (408) rotates with the circular stirring plate (4) as a whole, the first arc plate (408) will happen to be moved from the second arc plate (502) and the third arc plate (503). The first circular plate (408) and the third circular plate (503) are passed between the first circular plate (408) and the third circular plate (503), thereby ensuring that the three will not interfere with each other. When it is necessary to actively clean the solid impurities on the surface of the circular stirring plate (4), the circular stirring plate (4) is first stopped to ensure that the first circular plate (408) is exactly sandwiched between the second circular plate (502) and the third circular plate (503). At this time, the second rotating motor (5) is turned on to drive the second circular plate (502) and the third circular plate (503) to rotate. The second circular plate (502) and the third circular plate (503) will rotate while sandwiching the first circular plate (408), thereby driving the second rotating shaft (406) to rotate.

2. A purification system for stannous octoate according to claim 1, characterized in that: The filter (102) is connected to a filtrate discharge port (104), and the discharge port (101) is also connected to a flushing liquid discharge port (103). The filter (102) is fixed to the support base (2) via a first support frame (202). A filter element is installed inside the filter (102), and a filter element replacement port is provided.

3. A purification system for stannous octoate according to claim 1, characterized in that: A bevel gear ring (106) is fixed to the outside of the sedimentation separation tank (1); a first rotating motor (3) is fixed to the top of the supporting base (2) via a second supporting frame (201); a first bevel gear (301) is fixed to the output end of the first rotating motor (3); and the first bevel gear (301) is meshed with the bevel gear ring (106).

4. A purification system for stannous octoate according to claim 1, characterized in that: The top of the water washing tank (6) is respectively provided with a material adding port (602) and a water inlet (601), and the bottom of the water washing tank (6) is provided with a discharge port (603). The water washing tank (6) further comprises a circulation pump (8), a liquid inlet pipe (801) of the circulation pump (8) is connected to the discharge port (603), a liquid outlet pipe (802) of the circulation pump (8) is connected to the water inlet (601), and a water adding branch pipe (803) is further provided on the liquid outlet pipe (802).

5. A purification system for stannous octoate according to claim 4, characterized in that: The water washing tank (6) is provided with a heat insulation interlayer (604), one side of the water washing tank (6) is provided with a heat medium inlet pipe (605), and the other side of the water washing tank (6) is provided with a heat medium outlet pipe (606), and the heat medium inlet pipe (605) and the heat medium outlet pipe (606) are in communication with the heat insulation interlayer (604).

6. A method for purifying stannous octoate, applied to a stannous octoate purification system as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1: adding stannous octoate containing impurities into the sedimentation separation tank (1) through the feed port (105), adding a tetravalent tin flocculant, and turning on the first rotating motor (3) to drive the sedimentation separation tank (1) to rotate as a whole, thereby accelerating the dispersion of the flocculant; S2: After the flocculation is fully completed, the material is discharged from the discharge port (101), the solid is filtered through the filter (102), and the liquid is discharged from the filtrate discharge port (104) and transported to the washing tank (6); S3: the material is added into the water washing tank (6) through the material adding port (602), pure water is added into the water washing tank (6) through the water adding branch pipe (803), the mixed liquid is pumped out from the discharge port (603) through the circulation pump (8), and is injected back into the water washing tank (6) through the water inlet (601), and stirred by the stirrer (7); S4: After multiple cycles of washing, the mixture is left to stand for a period of time. After complete stratification, the lower layer of stannous octoate is discharged first, and then the upper layer of aqueous solution is discharged to complete one water washing. After three to four water washings, the purification is completed.

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