CN210934596U - A catalyst slurry dispersion device - Google Patents

Abstract

The utility model discloses a catalyst slurry dispersing device. The catalyst slurry dispersing device of the utility model comprises at least two stirring tanks, a high-speed disperser and two multi-way valves; the stirring tank is provided with a slurry inlet, a slurry return port and a slurry outlet which communicate with the inside thereof. , two multi-port valves have multiple ports, one port of one multi-port valve is communicated with the discharge port of the high-speed disperser, and the remaining ports are respectively communicated with the pulp outlet of the mixing tank one by one, and the other port One port of the multi-port valve is communicated with the feed port of the high-speed disperser, one port is used for discharging, and the remaining ports are respectively communicated with the slurry return port of the mixing tank one by one. The catalyst slurry dispersing device of the utility model uses a plurality of stirring tanks and a high-speed dispersing machine for circulation to realize the improvement of the dispersing efficiency of the catalyst.

Description

A catalyst slurry dispersion device

technical field

The utility model relates to the technical field of fuel cells, in particular to a catalyst slurry dispersion device.

Background technique

A proton exchange membrane fuel cell is a power generation device that converts chemical energy into electrical energy, in which the catalyst is the core component for adsorbing and reacting hydrogen and air. Therefore, the preparation of the catalyst slurry has a direct impact on the performance of the fuel cell. Although the catalyst particles are often nano-scale, the catalyst particles and the sulfonic acid resin tend to agglomerate into larger particles when the mixture is dispersed in the solvent, and the agglomeration into larger particles leads to a decrease in the catalyst utilization rate, and the coating process is relatively poor. Large particles will lead to coating defects, such as causing problems such as cracking of the catalyst coating at the agglomerates. Conventional dispersing equipment, such as planetary power mixer and ultrasonic dispersing machine, often uses a batching tank to homogenize. In a single tank, there are often dead corners that cannot be stirred or sheared, and the catalyst particles are easy to form agglomeration at the dead corners.

Utility model content

The purpose of the present invention is to propose a catalyst slurry dispersing device with high dispersing efficiency in view of the above-mentioned deficiencies of the prior art.

The catalyst slurry dispersing device of the utility model comprises at least two stirring tanks, a high-speed disperser and two multi-way valves; the stirring tank is provided with a slurry inlet, a slurry return port and a slurry inlet which communicate with the inside thereof. Slurry outlet, two of the multi-port valves have multiple ports, one port of one of the multi-port valves is communicated with the discharge port of the high-speed disperser, and the remaining ports are respectively connected with the stirring tank. The slurry return ports are in one-to-one correspondence, one port of the other multi-port valve is communicated with the feed port of the high-speed disperser, one port is used for discharging, and the remaining ports are respectively connected with the The pulp outlets are connected one by one.

Preferably, the high-speed disperser includes a casing, a rotor, a stator, a stirring shaft and a first driving device, the rotor and the stator are both arranged in the casing, the rotor and the stator are both cylindrical, and the stator Coaxially spaced on the outer circumference of the rotor, two ends of the stator are fixedly connected to the casing, one end of the rotor is open, and a plurality of slits are spaced on the side wall of the rotor. A plurality of dispersion holes are arranged on the side wall of the rotor at intervals, one end of the stirring shaft extends into the casing and is connected and fixed with the other end of the rotor, and the other end is connected with the first driving device in a driving manner. The first driving device drives the rotor to rotate; the feeding port and the discharging port are both arranged on the side wall of the casing.

Preferably, the feed port is arranged on the side wall of the casing corresponding to the other end face of the rotor.

Preferably, the casing is cylindrical, the stator and the rotor are coaxially arranged in the casing, one end of the stirring shaft passes through the casing and one end of the stator is connected and fixed to the rotor, so The feed port is arranged on the other end face of the casing, and the discharge outlet is arranged on the side wall of the casing.

Preferably, the stirring shaft and the central axis of the rotor are on the same straight line, and the feeding port is arranged on the extension line of the central axis of the rotor.

Preferably, both ends of the stator are open, and the two ends of the stator are respectively fixedly connected to the inner walls of the casing at both ends.

Preferably, the first driving device includes a first motor, and a transmission shaft of the first motor is in driving connection with the other end of the stirring shaft.

Preferably, the stirring tank includes a tank body and a stirring device, and the stirring device is used for stirring the slurry in the tank.

Preferably, the stirring device includes a stirring paddle and a second driving device, the stirring paddle comprises a paddle shaft and a paddle disposed at one end of the paddle shaft, and one end of the paddle shaft extends into the tank, the The other end of the paddle shaft extends through the tank body to the outside thereof and is connected with the second driving device in a driving manner.

Preferably, the second driving device includes a second motor, and a transmission shaft of the second motor is in driving connection with the other end of the propeller shaft.

The operation process of the catalyst slurry dispersing device of the present invention is as follows: the configured catalyst slurry enters into a plurality of stirring tanks through the slurry inlet respectively, and performs preliminary stirring. After stirring for a certain period of time, the catalyst materials in the stirring tanks The slurry is pumped to the high-speed disperser for further dispersion, and the sheared slurry enters the mixing tank from the slurry return port through a multi-way valve until all the slurry in the high-speed disperser enters the mixing tank. It can be considered that the slurry has been sheared and ground once, and the stirring tank can repeat the above method, and then the slurry is pumped to the high-speed disperser after stirring. The port of the valve used for discharging to the next link. In this way, multiple stirred tanks and high-speed dispersers are used for circulation to achieve an increase in catalyst dispersion efficiency.

Description of drawings

Fig. 1 is the structural representation of a kind of catalyst slurry dispersing device of the present invention;

2 is a cross-sectional view of a high-speed disperser of a catalyst slurry dispersing device of the present invention.

1- mixing tank; 10- tank body; 11- slurry inlet; 12- slurry outlet; 13- slurry outlet; 2- high-speed disperser; 21- outlet; 22- inlet; 3- multi-pass Valve; 4-housing; 5-rotor; 51-slot; 6-stator; 61-dispersion hole; 7-stirring shaft; 8-first drive device; 81-first motor; 9-stirring device; 91-stirring paddle ; 911 - propeller shaft; 912 - blade; 92 - second drive unit; 921 - second motor.

Detailed ways

The following are specific embodiments of the present utility model combined with the accompanying drawings to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

As shown in Figure 1, a catalyst slurry dispersing device of the present invention includes at least two stirring tanks 1, a high-speed disperser 2 and two multi-way valves 3; the stirring tank 1 has a variety of structures, and here Without limitation, in this embodiment, the stirring tank 1 may include a tank body 10 and a stirring device 9, and the stirring device 9 is used for slurry in the tank body 10; the tank body 10 is provided with a slurry inlet that communicates with its interior 11. The slurry return port 12 and the slurry outlet 13, two multi-port valves 3 have multiple ports, one port of one multi-port valve 3 is communicated with the outlet port 21 of the high-speed disperser 2, and the remaining ports They are connected with the slurry return port 12 of the tank body 10 in a one-to-one correspondence, and one port of the other multi-port valve 3 is communicated with the feed port 22 of the high-speed disperser 2. One port is used for discharging, and the remaining ports They are in one-to-one correspondence with the pulp outlet 13 of the tank body 10 .

The operation process of a catalyst slurry dispersing device of the present invention is as follows: the configured catalyst slurry enters a plurality of stirring tanks 1 through the slurry inlets 11 respectively, and performs preliminary stirring. After stirring for a certain period of time, the stirring tanks 1 The catalyst slurry is pumped to the high-speed disperser 2 for further dispersion, and the sheared slurry enters the mixing tank 1 from the slurry return port 12 through a multi-way valve 3 again, until all the slurry in the high-speed disperser 2 enters Stirring tank 1, so that the slurry in stirring tank 1 can be considered to be all sheared and ground, and stirring tank 1 can repeat the above method, and then stir and then pump the slurry to high-speed disperser 2, and so on until the catalyst particles If the diameter is within the required range, it can go to the next link through the port used for discharging of another multi-port valve 3. In this way, a plurality of stirring tanks 1 and a high-speed disperser 2 are used for circulation to achieve an improvement in catalyst dispersion efficiency.

As shown in FIG. 2 , the high-speed disperser 2 has various structures, which are not limited here. In this embodiment, the high-speed disperser 2 may include a casing 4 , a rotor 5 , a stator 6 , a stirring shaft 7 and a first drive In the device 8, the rotor 5 and the stator 6 are both arranged in the casing 4, the rotor 5 and the stator 6 are both cylindrical, the stator 6 is arranged on the outer periphery of the rotor 5 at a coaxial interval, and the two ends of the stator 6 are fixedly connected to the casing 4, One end of the rotor 5 is open, the side wall of the rotor 5 is provided with a plurality of slits 51 at intervals, the side wall of the stator 6 is provided with a plurality of dispersion holes 61 at intervals, and one end of the stirring shaft 7 extends into the casing 4 and the rotor. The other end of the 5 is connected and fixed, and the other end is connected with the first driving device 8 in a driving manner, and the first driving device 8 drives the rotor 5 to rotate; The first drive device 8 drives the rotor 5 to rotate. The rotor 5 has a number of slits 51 for the slurry to pass through. The stator 6 has a number of dispersion holes 61 for the slurry to pass through. The slurry enters the rotor 5 of the high-speed disperser 2 from the feed port 22. In the high-speed rotation of the rotor 5 (usually 1000r/min～10000r/min), centrifugal force throws the slurry out of the gap 51 into the gap between the rotor 5 and the stator 6, so that the speed difference generated by the rotor 5 and the stator 6 produces a strong The high shearing force enables the incoming slurry to be ground without dead ends, which ensures that all the slurry in the tank 1 is sheared, and improves the consistency of the particle size distribution of the catalyst. The slurry has a certain kinetic energy under the action of centrifugal force, so it can flow out from the discharge port 21 through the dispersion hole 61 of the stator 6 .

There are various positions for the feeding port 22 , which are not limited here. In this embodiment, the feeding port 22 may be provided on the side wall of the casing 4 corresponding to the other end face of the rotor 5 .

There are various shapes of the casing 4, which are not limited here. In this embodiment, the casing 4 can be cylindrical, the stator 6 and the rotor 5 are coaxially arranged in the casing 4, and one end of the stirring shaft 7 passes through the casing 4. One end of the stator 6 is connected and fixed to the rotor 5 , the feed port 22 is arranged on the other end face of the casing 4 , and the discharge port 21 is arranged on the side wall of the casing 4 , which facilitates the processing of the feed port 22 .

The stirring shaft 7 is on the same line as the central axis of the rotor 5 , and the feeding port 22 is arranged on the extension line of the central axis of the rotor 5 . The catalyst feed port 22 and the stirring shaft 7 are on the same line, that is, on the same line with the bearing of the rotor 5, and the catalyst is distributed to the shearing area under the action of centrifugal force, so that the catalyst slurry has no shear dead angle.

Both ends of the stator 6 may be open, and the two ends of the stator 6 are fixedly connected to the inner walls of the housing 4 at both ends respectively.

Of course, the two ends of the stator may not be open, and the end faces of the two ends can be fixed to the inner walls of the two ends of the casing 4. The open stator can reduce the weight of the overall equipment of the high-speed disperser, and at the same time facilitate the processing of the feeding port and the installation. Stirring shaft 7.

There are various structures of the first driving device 8, which are not limited here. In this embodiment, the first driving device 8 may include a first motor 81, and the transmission shaft of the first motor 81 is driven by the other end of the stirring shaft 7. connect. The first motor 81 drives the stirring shaft 7 to rotate, thereby driving the rotor 5 to rotate.

There are various structures of the stirring device 9, which are not limited here. In this embodiment, the stirring device 9 may include a stirring paddle 91 and a second driving device 92, and the stirring paddle 91 includes a paddle shaft 911 and is arranged at one end of the paddle shaft 911. One end of the paddle shaft 911 extends into the tank body 10 , and the other end of the paddle shaft 911 extends through the tank body 10 to the outside thereof and is connected to the second drive device 92 in a driving manner. The second driving device 92 drives the paddle shaft 911 to rotate.

There are various structures of the second driving device 92, which are not limited here. In this embodiment, the second driving device 92 may include a second motor 921, and the transmission shaft of the second motor 921 is driven by the other end of the paddle shaft 911. Connected, the second motor 921 drives the paddle shaft 911 to rotate.

The parts not covered above are applicable to the prior art.

Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present invention, which belongs to the technical field of the present invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or substitute in similar ways, but will not deviate from the direction of the present invention or go beyond the scope defined by the appended claims. . Those skilled in the art should understand that any modification, equivalent replacement, improvement, etc. made to the above embodiments according to the technical essence of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A catalyst slurry dispersing device is characterized in that: comprising at least two stirring tanks (1), a high-speed disperser (2) and two multi-way valves (3); the stirring tank (1) comprises a tank A body (10) and a stirring device (9), the stirring device (9) is used for stirring the slurry in the tank body (10); the tank body (10) is provided with a slurry feeder communicated with the inside of the tank body (10) Port (11), pulp return port (12) and pulp outlet (13), two of the multi-port valves (3) have multiple ports, and one port of one of the multi-port valves (3) is connected to all ports. The discharge ports (21) of the high-speed disperser (2) are communicated with each other, and the remaining ports are communicated with the slurry return ports (12) of the tank body (10) in a one-to-one correspondence, and another multi-port valve (3) One of the through ports is communicated with the feed port (22) of the high-speed disperser (2), one port is used for discharging, and the remaining ports are respectively connected with the pulp outlet (13) of the tank body (10). ) are in one-to-one correspondence. 2. A catalyst slurry dispersing device according to claim 1, characterized in that: the high-speed dispersing machine (2) comprises a casing (4), a rotor (5), a stator (6), and a stirring shaft (7) and the first drive device (8), the rotor (5) and the stator (6) are both arranged in the casing (4), the rotor (5) and the stator (6) are both cylindrical, and the The stator (6) is coaxially arranged on the outer circumference of the rotor (5), both ends of the stator (6) are fixedly connected to the casing (4), and one end of the rotor (5) is open, so The side wall of the rotor (5) is provided with a plurality of slits (51) at intervals, the side wall of the stator (6) is provided with a plurality of dispersion holes (61) at intervals, and one end of the stirring shaft (7) extends. into the casing (4) to be connected and fixed to the other end of the rotor (5), and the other end to be drive-connected to the first drive device (8), which drives the rotor (8). 5) Rotation; the feeding port (22) and the discharging port (21) are both arranged on the side wall of the casing (4). 3. A catalyst slurry dispersing device according to claim 2, characterized in that: the feeding port (22) is arranged on the side of the casing (4) corresponding to the other end face of the rotor (5). on the wall. 4. A catalyst slurry dispersion device according to claim 3, characterized in that: the casing (4) is cylindrical, and the stator (6) and the rotor (5) are coaxially arranged on the casing In (4), one end of the stirring shaft (7) passes through the casing (4) and one end of the stator (6) is connected and fixed to the rotor (5), and the feeding port (22) is provided On the other end face of the casing (4), the outlet (21) is arranged on the side wall of the casing (4). 5. A catalyst slurry dispersing device according to claim 4, characterized in that: the stirring shaft (7) and the central axis of the rotor (5) are on the same straight line, and the feeding port (22) ) is arranged on the extension line of the central axis of the rotor (5). 6 . The catalyst slurry dispersing device according to claim 4 , wherein both ends of the stator ( 6 ) are open, and the two ends of the stator ( 6 ) are fixedly connected to the inner walls of the two ends of the casing ( 4 ) respectively. 7 . superior. 7. The catalyst slurry dispersing device according to any one of claims 2-6, wherein the first driving device (8) comprises a first motor (81), and the first motor (81) ) drive shaft is connected with the other end of the stirring shaft (7). 8. A catalyst slurry dispersing device according to any one of claims 1-6, characterized in that: the stirring device (9) comprises a stirring paddle (91) and a second driving device (92), the The stirring paddle (91) includes a paddle shaft (911) and a paddle (912) arranged at one end of the paddle shaft (911), and one end of the paddle shaft (911) extends into the tank body (10), so The other end of the paddle shaft (911) extends through the tank body (10) to the outside of the tank body (10) and is connected to the second driving device (92) in a driving manner. 9 . The catalyst slurry dispersion device according to claim 8 , wherein the second driving device ( 92 ) comprises a second motor ( 921 ), and the transmission shaft of the second motor ( 921 ) is connected to the The other end of the paddle shaft (911) is connected in a driving manner.

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