Fuel cell catalyst filter cake dispersing and cleaning equipment

Abstract

The utility model relates to the technical field of filter cake processing equipment, and discloses fuel cell catalyst filter cake dispersing and cleaning equipment, which comprises a barrel body, a filter cake dispersing and cleaning device, a filter cake dispersing and cleaning device and a filter cake dispersing and cleaning device, the dispersing base is assembled at the cavity bottom of the stirring cavity; the stirring and dispersing disc is arranged opposite to the dispersing base, a feeding channel is formed in the stirring and dispersing disc, and the feeding channel is used for allowing a filter cake solution to enter the space between the dispersing base and the stirring and dispersing disc; the stirring and dispersing motor is in transmission connection with the stirring and dispersing disc; the stirring and dispersing motor is assembled on the lifting device, and the stirring and dispersing disc has a dispersing state in which the stirring and dispersing disc is attached to the stirring and dispersing disc to extrude and disperse a filter cake and a stirring state in which the stirring and dispersing disc is far away from the stirring and dispersing disc to stir liquid in the lifting stroke. And the friction force between the stirring dispersion disc and the dispersion base grinds and disperses the filter cake, and the process does not need to manually grind the filter cake, so that the labor intensity is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter cake processing equipment, in particular to a fuel cell catalyst filter cake dispersion and cleaning equipment. Background Art

[0002] The hydrogen fuel cell catalyst prepared by the liquid phase reduction process is prepared by mixing the catalyst carrier slurry, organic solvent and metal salt in a reactor, and then reducing the metal salt by heating and using an organic reducing solvent and loading it on the carrier. At this time, a mixed liquid is obtained in which the catalyst coexists with other ions in the solution, water, organic solvent, additives, etc. In order to obtain a hydrogen fuel cell catalyst powder product, everything except the catalyst in the mixed liquid needs to be separated and cleaned.

[0003] In order to improve the separation and cleaning efficiency, the synthesized hydrogen fuel cell catalyst slurry is generally directly filtered out with filtering equipment such as suction filtration or filter press equipment to remove water, organic solvents, and other impurities to obtain a filter cake containing catalysts and a small amount of impurities. At this time, there is still organic solvent remaining in the hydrogen fuel cell catalyst filter cake. The hydrogen fuel cell catalyst filter cake needs to be manually re-dispersed and then a certain amount of pure water is added to stir and wash, and then the hydrogen fuel cell catalyst filter cake is left to stand for stratification, and the supernatant is poured out. Repeat this operation several times until the organic solvent is cleaned. Finally, the hydrogen fuel cell catalyst deposition liquid obtained by washing is placed in a drying device to dry to obtain a hydrogen fuel cell catalyst product.

[0004] When filtering the mixed liquid after the hydrogen fuel cell catalyst synthesis reaction is completed, the filtration speed is very slow because the sedimentation liquid contains a large amount of organic solvents. At this time, filter pressing or suction filtration is generally used for filtration. The filter cake obtained by filtration by filter pressing or suction filtration is relatively hard, and it is not easy to disperse it completely by conventional water-adding and stirring dispersion process. It needs to be broken up by manual crushing, and then water can be added to quickly disperse and dissolve. However, this filter cake dispersion method has low production efficiency, high labor intensity, and is easy to introduce new impurities. Utility Model Content

[0005] The utility model aims to provide a fuel cell catalyst filter cake dispersing and cleaning device to solve the problems of low production efficiency, high labor intensity and easy introduction of new impurities in the prior art filter cake dispersing method during stirring and dispersing.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a fuel cell catalyst filter cake dispersion and cleaning device, comprising:

[0007] A cylinder, wherein the cylinder has a stirring chamber, and a discharge valve connected to the stirring chamber is installed on the cylinder;

[0008] A dispersion base, the dispersion base is assembled at the bottom of the stirring chamber;

[0009] A stirring and dispersing disk, the stirring and dispersing disk is arranged opposite to the dispersing base, the stirring and dispersing disk is arranged on the side of the dispersing base away from the bottom of the cavity, a feeding channel is opened on the stirring and dispersing disk, the feeding channel runs through the stirring and dispersing disk, and the feeding channel is used to allow the filter cake solution to enter between the dispersing base and the stirring and dispersing disk;

[0010] A stirring and dispersing motor, the stirring and dispersing motor is drivingly connected to the stirring and dispersing disk, and the stirring and dispersing motor is used to drive the stirring and dispersing disk to rotate;

[0011] A lifting device, wherein the stirring and dispersing motor is mounted on the lifting device, and the lifting device is used to drive the stirring and dispersing motor and the stirring and dispersing disk to lift and lower. The stirring and dispersing disk has a dispersing state in which it is in contact with the stirring and dispersing disk to squeeze and disperse the filter cake, and a stirring state in which it is away from the stirring and dispersing disk to stir the liquid during the lifting stroke.

[0012] Preferably, it further comprises a feeder, wherein the feeder is mounted on a side of the feed channel away from the dispersing base.

[0013] Preferably, the feed channel is a threaded hole, and the feeder is threadably assembled with the feed channel.

[0014] Preferably, the lifting device comprises a lifting bracket, a lifting motor and a transmission assembly, the transmission assembly is connected between the lifting bracket and the lifting motor, and the stirring and dispersing motor is fixedly assembled on the lifting bracket.

[0015] Preferably, the transmission assembly includes a screw rod, a lifting nut and a sleeve, the screw rod is rotatably assembled on the sleeve, the screw rod is transmission-connected to the lifting motor, the lifting nut is threadedly assembled with the screw rod, the lifting nut is fixedly assembled on the bottom of the lifting bracket, and the lifting bracket and the sleeve are guided and assembled along the vertical direction.

[0016] Preferably, there are a plurality of discharge valves, and the discharge valves are evenly spaced apart along the up-and-down directions on the cylinder.

[0017] Preferably, the bottom wall of the stirring chamber is an inclined surface which gradually descends toward the direction approaching the discharge valve, and the discharge valve at the bottom is flush with the inclined surface.

[0018] Preferably, a sight glass is also provided on the cylinder, and the sight glass is arranged on a side of the cylinder away from the discharge valve.

[0019] Compared with the prior art, the fuel cell catalyst filter cake dispersing and cleaning device of the utility model has the following beneficial effects: a dispersing base and a dispersing disk are arranged in a stirring chamber of a cylinder body, and the height of the dispersing motor and the dispersing disk is adjusted by a lifting device, thereby adjusting the distance between the dispersing base and the dispersing disk. When dispersing and cleaning the filter cake, the lifting device adjusts the dispersing disk to a dispersing state, and a solution after the filter cake is mixed with a part of water can enter between the dispersing disk and the dispersing base through a feeding channel on the dispersing disk, and the dispersing motor drives the dispersing disk to rotate, and the friction between the dispersing disk and the dispersing base grinds and disperses the filter cake, thereby ensuring that the filter cake is completely dispersed; after all the filter cake solution enters the stirring chamber, water is added to the stirring chamber, and the lifting device adjusts the dispersing disk to a stirring state, and the dispersing motor drives the dispersing disk to stir and clean the solution, and the supernatant after cleaning and standing can be discharged through a discharge valve. In this process, there is no need to manually crush the filter cake, thereby reducing labor intensity, and no impurities will be introduced due to manual operation, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a fuel cell catalyst filter cake dispersion and cleaning device of the utility model.

[0021] In the figure, 1. cylinder, 11. stirring chamber, 12. discharge valve, 2. stirring and dispersing disk, 21. feeding channel, 22. feeder, 3. dispersing base, 4. stirring and dispersing motor, 5. lifting device, 51. lifting bracket, 52. lifting motor, 53. screw rod, 54. lifting nut, 55. sleeve, 6. dispersing controller, 7. sight glass, 8. lifting controller, 9. universal wheel. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] A preferred embodiment of a fuel cell catalyst filter cake dispersion and cleaning device of the utility model is as follows: Figure 1 As shown, the fuel cell catalyst filter cake dispersion and cleaning device includes a cylinder 1, a dispersion base 3, a stirring and dispersing disk 2, a stirring and dispersing motor 4 and a lifting device 5.

[0024] The cylinder 1 is a cylindrical structure, and has a stirring chamber 11, which is used to contain the filter cake solution to be dispersed and cleaned. A discharge valve 12 is also installed on the cylinder 1, and the discharge valve 12 is connected to the stirring chamber 11 inside the cylinder 1. After the filter cake solution is washed and left to stand, the supernatant can be discharged through the discharge valve 12, instead of pouring out the supernatant manually. In this embodiment, universal wheels 9 are also installed at the four corners of the bottom of the cylinder 1 for easy movement.

[0025] The dispersion base 3 is assembled at the bottom of the stirring chamber 11. The dispersion base 3 is coaxially arranged with the stirring chamber 11. The dispersion base 3 protrudes from the middle of the bottom of the cylinder 1. There is an annular space between the dispersion base 3 and the inner wall of the stirring chamber 11 for accommodating the filter cake solution.

[0026] The stirring and dispersing disc 2 is arranged opposite to the dispersing base 3, and the stirring and dispersing disc 2 is arranged on the side of the dispersing base 3 away from the cavity bottom. The stirring and dispersing disc 2 and the dispersing base 3 are both cylindrical structures, and the diameters of the stirring and dispersing disc 2 and the dispersing base 3 are the same. When the stirring and dispersing disc 2 and the dispersing base 3 are rotated in contact, a grinding effect can be achieved, and the grinding efficiency can be adjusted by controlling the distance between the stirring and dispersing disc 2 and the dispersing base 3.

[0027] A feeding channel 21 is also provided on the stirring and dispersing disk 2, and the feeding channel 21 runs through the stirring and dispersing disk 2. The feeding channel 21 is used to allow the filter cake solution to enter between the dispersing base 3 and the stirring and dispersing disk 2. When the filter cake is dispersed and cleaned, the filtered catalyst filter cake is mixed with a certain amount of pure water and enters between the dispersing base 3 and the stirring and dispersing disk 2 through the feeding channel 21 on the stirring and dispersing disk 2. If the feeding is not smooth, a thick stainless steel rod can be used to squeeze and assist the feeding.

[0028] The stirring and dispersing motor 4 is connected to the stirring and dispersing disk 2, and the stirring and dispersing motor 4 is used to drive the stirring and dispersing disk 2 to rotate. When the stirring and dispersing motor 4 drives the stirring and dispersing disk 2 to rotate, the friction between the stirring and dispersing disk 2 and the dispersing base 3 can grind the filter cake, and the centrifugal effect of the stirring and dispersing disk 2 itself can stir the solution, playing a dual role of stirring and dispersing.

[0029] It also includes a dispersion controller 6, which is connected to the stirring and dispersing motor 4 by signal. The dispersion controller 6 is used to control the start and stop, speed and running time of the stirring and dispersing motor 4, so as to control the stirring and dispersing process.

[0030] The stirring and dispersing motor 4 is mounted on the lifting device 5, and the lifting device 5 is used to drive the stirring and dispersing motor 4 and the stirring and dispersing plate 2 to rise and fall, so as to adjust the height of the stirring and dispersing motor 4 and the stirring and dispersing plate 2. In this embodiment, universal wheels 9 are also mounted at the four corners of the bottom of the lifting device 5 to facilitate the movement of the lifting device 5 so that the stirring and dispersing motor 4, the stirring and dispersing plate 2 and the dispersing base 3 are coaxial.

[0031] The stirring and dispersing disk 2 has a dispersing state in which it is in contact with the stirring and dispersing disk 2 to squeeze and disperse the filter cake, and a stirring state in which it is away from the stirring and dispersing disk 2 to stir the liquid during the lifting stroke. When the stirring and dispersing disk 2 is in the dispersing state, the stirring and dispersing disk 2 and the dispersing base 3 disperse the filter cake through friction; when the stirring and dispersing disk 2 is in the stirring state, the stirring and dispersing motor 4 can drive the stirring and dispersing disk 2 to rotate to stir the solution.

[0032] The fuel cell catalyst filter cake dispersion and cleaning device arranges a dispersion base 3 and a stirring and dispersing disk 2 in a stirring chamber 11 of a barrel 1, and adjusts the height of a stirring and dispersing motor 4 and a stirring and dispersing disk 2 by a lifting device 5, thereby adjusting the distance between the dispersion base 3 and the stirring and dispersing disk 2. When dispersing and cleaning the filter cake, the lifting device 5 adjusts the stirring and dispersing disk 2 to a dispersed state, and a solution after the filter cake is mixed with a portion of water can enter between the stirring and dispersing disk 2 and the dispersion base 3 through a feed channel 21 on the stirring and dispersing disk 2, and the stirring and dispersing motor 4 drives the stirring and dispersing disk 2 to rotate, and the friction between the stirring and dispersing disk 2 and the dispersion base 3 grinds and disperses the filter cake, ensuring that the filter cake is completely dispersed; after all the filter cake solution enters the stirring chamber 11, water is added to the stirring chamber 11, and the lifting device 5 adjusts the stirring and dispersing disk 2 to a stirring state, and the stirring and dispersing motor 4 drives the stirring and dispersing disk 2 to stir and clean the solution, and the supernatant after cleaning and standing can be discharged through a discharge valve 12, and this process does not require manual crushing of the filter cake, thereby reducing labor intensity, and will not introduce impurities due to manual operation, thereby improving production efficiency.

[0033] Preferably, a feeder 22 is further included, and the feeder 22 is installed on a side of the feed channel 21 away from the dispersing base 3 .

[0034] The feeder 22 is a funnel-shaped structure and is arranged on the feed channel 21 . The feeder 22 can ensure that the filter cake solution mixed with water enters the feed channel 21 to prevent the solution from spilling.

[0035] Preferably, the feed channel 21 is a threaded hole, and the feeder 22 is threadedly assembled with the feed channel 21 .

[0036] The feeder 22 is threadably assembled with the feed channel 21 so that the feeder 22 and the feed channel 21 are detachably connected. After all the filter cake solution enters between the stirring and dispersing disk 2 and the dispersing base 3, the feeder 22 can be taken out and pure water can be added to the stirring barrel for cleaning to prevent the feeder 22 from affecting the stirring of the solution.

[0037] Preferably, the lifting device 5 includes a lifting bracket 51 , a lifting motor 52 and a transmission assembly, the transmission assembly is connected between the lifting bracket 51 and the lifting motor 52 , and the stirring and dispersing motor 4 is fixedly assembled on the lifting bracket 51 .

[0038] The lifting motor 52 drives the lifting bracket 51 to move up and down through the transmission assembly, thereby adjusting the height of the stirring and dispersing motor 4 and the stirring and dispersing plate 2 located on the lifting bracket 51. In this embodiment, the lifting device 5 also includes a lifting controller 8, which is connected to the lifting motor 52 by signal. The lifting controller 8 can control the start and stop of the lifting motor 52, thereby controlling the height of the lifting bracket 51.

[0039] Preferably, the transmission assembly includes a screw rod 53, a lifting nut 54 and a sleeve 55. The screw rod 53 is rotatably assembled in the sleeve 55. The screw rod 53 is transmission-connected to the lifting motor 52. The lifting nut 54 is threadedly assembled with the screw rod 53. The lifting nut 54 is fixedly assembled at the bottom of the lifting bracket 51. The lifting bracket 51 and the sleeve 55 are guided and assembled along the vertical direction.

[0040] The transmission assembly is formed by a sleeve 55, a screw rod 53 and a lifting nut 54, which can realize continuous adjustment of the lifting bracket 51. The screw rod 53 and the lifting nut 54 are commonly used transmission mechanisms with low cost, and the lifting motor 52 has a simple transmission structure.

[0041] Preferably, there are multiple discharge valves 12 , and the discharge valves 12 are evenly spaced on the cylinder 1 along the up-down direction.

[0042] Multiple discharge valves 12 can separate the cylinder 1 into four areas of equal height from top to bottom. After repeated cleaning, the height of the supernatant is different. After the filter cake is cleaned and left to stand for a period of time, the discharge valve 12 closest to the stratified liquid surface can be opened to release the supernatant. No manual operation is required, which improves production efficiency and reduces the loss of catalyst carried out by the supernatant.

[0043] Preferably, the bottom wall of the stirring chamber 11 is an inclined surface that gradually descends toward the discharge valve 12 , and the discharge valve 12 at the bottom is flush with the inclined surface.

[0044] The bottom wall of the stirring chamber 11 is an inclined surface, which facilitates the catalyst deposition liquid to flow out smoothly from the discharge valve 12 and avoids the residue in the stirring chamber 11 and the loss.

[0045] Preferably, a sight glass 7 is further provided on the cylinder 1 , and the sight glass 7 is arranged on a side of the cylinder 1 facing away from the discharge valve 12 .

[0046] The sight glass 7 allows the operator to observe the stratification of the liquid and select to open the discharge valve 12 closest to the stratified liquid surface according to the stratification to improve efficiency.

[0047] The working process of the fuel cell catalyst filter cake dispersion and cleaning equipment is as follows:

[0048] First, the lifting controller 8 controls the lifting motor 52 to adjust the height of the lifting bracket 51 so that the stirring and dispersing disk 2 and the dispersing base 3 fit naturally. At this time, the stirring and dispersing disk 2 is in a dispersed state. The catalyst filter cake obtained by filtration is mixed with a certain amount of pure water and enters the feeding channel 21 of the stirring and dispersing disk 2 through the feeder 22. If the feeding is not smooth, a thick stainless steel rod can be used for manual extrusion to assist the feeding.

[0049] The start and stop, speed and running time of the stirring and dispersing motor 4 are controlled by the dispersion controller 6, so as to adjust the working state of the stirring and dispersing disk 2, disperse the catalyst filter cake, and the dispersed catalyst filter cake becomes slurry and flows out from the gap between the stirring and dispersing disk 2 and the dispersion base 3. In the process of dispersing the catalyst filter cake, the dispersion effect and the feeding condition are observed. When the dispersion effect is not good, the dispersion effect can be ensured by adjusting the speed of the stirring and dispersing disk 2 and the height of the stirring and dispersing disk 2. When the feeding is not smooth, pure water and thick stainless steel rods can be added to the feeder 22 of the stirring and dispersing disk 2 to extrude auxiliary feeding and other measures.

[0050] After the catalyst filter cake is redispersed into slurry, the catalyst slurry can be cleaned. First, the feeder 22 is disassembled, and an appropriate amount of ultrapure water is added to the cylinder 1. Then, the lifting motor 52 is driven by the lifting controller 8 to work, and the height of the lifting bracket 51 is adjusted to lift the stirring and dispersing disk 2 to a suitable height.

[0051] Start the stirring and dispersing motor 4, set the speed and running time of the stirring and dispersing disk 2 to start stirring and cleaning the catalyst slurry, at which time the stirring and dispersing disk 2 acts as a stirring paddle. After the stirring and dispersing disk 2 runs for the set time, the dispersing controller 6 will stop the operation of the stirring and dispersing motor 4, and the stirring and dispersing disk 2 will also stop working if it loses power.

[0052] After a period of standing, the catalyst particles in the catalyst slurry will settle at the bottom. The liquid stratification interface is observed through the sight glass 7, and the supernatant is discharged from the discharge valve 12 closest to the boundary liquid surface, leaving the catalyst deposition liquid. In order to clean the catalyst, the cleaning process needs to be repeated several times. The cleaned catalyst deposition liquid is sent to the drying device for drying to obtain the finished catalyst.

[0053] In summary, the embodiment of the utility model provides a fuel cell catalyst filter cake dispersion and cleaning device, which arranges a dispersion base and a stirring and dispersing disk in a stirring chamber of a cylinder body, and adjusts the height of the stirring and dispersing motor and the stirring and dispersing disk by a lifting device, thereby adjusting the distance between the dispersion base and the stirring and dispersing disk. When dispersing and cleaning the filter cake, the lifting device adjusts the stirring and dispersing disk to a dispersed state, and the solution after the filter cake is mixed with part of the water can enter between the stirring and dispersing disk and the dispersion base through a feed channel on the stirring and dispersing disk, and the stirring and dispersing motor drives the stirring and dispersing disk to rotate, and the friction between the stirring and dispersing disk and the dispersion base grinds and disperses the filter cake to ensure that the filter cake is completely dispersed; after the filter cake solution completely enters the stirring chamber, water is added to the stirring chamber, and the lifting device adjusts the stirring and dispersing disk to a stirring state, and the stirring and dispersing motor drives the stirring and dispersing disk to stir and clean the solution, and the supernatant after cleaning and standing can be discharged through a discharge valve. This process does not require manual crushing of the filter cake, reduces labor intensity, and does not introduce impurities due to manual operation, thereby improving production efficiency.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A fuel cell catalyst filter cake dispersion and cleaning device, characterized in that: include: A barrel (1), the barrel (1) having a stirring chamber (11), and a discharge valve (12) connected to the stirring chamber (11) is also mounted on the barrel (1); A dispersion base (3), wherein the dispersion base (3) is mounted at the bottom of the stirring chamber (11); A stirring and dispersing disk (2), the stirring and dispersing disk (2) being arranged opposite to the dispersing base (3), the stirring and dispersing disk (2) being arranged on a side of the dispersing base (3) away from the bottom of the cavity, the stirring and dispersing disk (2) being provided with a feed channel (21), the feed channel (21) penetrating the stirring and dispersing disk (2), the feed channel (21) being used for allowing the filter cake solution to enter between the dispersing base (3) and the stirring and dispersing disk (2); A stirring and dispersing motor (4), the stirring and dispersing motor (4) is drivingly connected to the stirring and dispersing disk (2), and the stirring and dispersing motor (4) is used to drive the stirring and dispersing disk (2) to rotate; A lifting device (5), the stirring and dispersing motor (4) is mounted on the lifting device (5), the lifting device (5) is used to drive the stirring and dispersing motor (4) and the stirring and dispersing disk (2) to lift and lower, and the stirring and dispersing disk (2) has a dispersing state of being in contact with the stirring and dispersing disk (2) to squeeze and disperse the filter cake and a stirring state of being away from the stirring and dispersing disk (2) to stir the liquid during the lifting stroke.

2. The fuel cell catalyst filter cake dispersion and cleaning equipment according to claim 1, characterized in that: It also includes a feeder (22), which is mounted on a side of the feed channel (21) away from the dispersing base (3).

3. The fuel cell catalyst filter cake dispersion and cleaning equipment according to claim 2, characterized in that: The feed channel (21) is a threaded hole, and the feeder (22) is threadedly assembled with the feed channel (21).

4. The fuel cell catalyst filter cake dispersing and cleaning device according to any one of claims 1 to 3, characterized in that: The lifting device (5) comprises a lifting bracket (51), a lifting motor (52) and a transmission assembly, wherein the transmission assembly is connected between the lifting bracket (51) and the lifting motor (52), and the stirring and dispersing motor (4) is fixedly mounted on the lifting bracket (51).

5. The fuel cell catalyst filter cake dispersion and cleaning equipment according to claim 4, characterized in that: The transmission assembly comprises a screw rod (53), a lifting nut (54) and a sleeve (55); the screw rod (53) is rotatably assembled on the sleeve (55); the screw rod (53) is transmission-connected to the lifting motor (52); the lifting nut (54) is threadedly assembled with the screw rod (53); the lifting nut (54) is fixedly assembled on the bottom of the lifting bracket (51); and the lifting bracket (51) and the sleeve (55) are guided and assembled along a vertical direction.

6. The fuel cell catalyst filter cake dispersing and cleaning device according to any one of claims 1 to 3, characterized in that: There are a plurality of discharge valves (12), and the discharge valves (12) are evenly spaced on the cylinder (1) in the up-down direction.

7. The fuel cell catalyst filter cake dispersion and cleaning device according to claim 6, characterized in that: The bottom wall of the stirring chamber (11) is an inclined surface that gradually descends in a direction approaching the discharge valve (12), and the discharge valve (12) at the bottom is flush with the inclined surface.

8. The fuel cell catalyst filter cake dispersion and cleaning device according to any one of claims 1 to 3, characterized in that: The cylinder (1) is also provided with a sight glass (7), and the sight glass (7) is arranged on a side of the cylinder (1) facing away from the discharge valve (12).

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