CN118681860B - Washing equipment for preparing conductive silver powder and using method thereof - Google Patents

Abstract

The invention discloses a washing device for preparing conductive silver powder and a use method thereof, wherein the washing device comprises: the washing tank body is internally provided with a stirring shaft in a rotating way, and stirring blades are fixedly connected on the stirring shaft; the feeding mechanism comprises a fixed container, wherein the inner side of the fixed container is fixedly connected with a filter plate, and the inner side of the filter plate is fixedly connected with filter cloth; the filter pressing mechanism comprises an air duct connected to a sealing cover at the inner side of the filter plate, a one-way valve is arranged on the air duct, a filter pressing pipe communicated to the fixed container is fixedly connected in the washing tank body, a filter pressing piston is arranged in the filter pressing pipe, an iron plate is outwards fixedly connected with the filter pressing piston, and a push rod and a pull rod corresponding to the iron plate are fixedly connected at the upper part of the stirring shaft; a drain mechanism comprising a liquid collection container communicatively connected to the bottom side of the stationary container. The silver powder slurry treatment device can effectively carry out suction filtration, stirring washing and dispersion treatment on silver powder slurry, and can obviously improve the connection efficiency between working procedures.

Description

Washing equipment for preparing conductive silver powder and using method thereof

Technical Field

The invention relates to the technical field of washing processing for preparing conductive silver powder, in particular to washing equipment for preparing conductive silver powder and a using method thereof.

Background

The silver powder can be prepared by various methods, such as a liquid-liquid interface reaction method, an electrochemical method, a chemical deposition method, a rapid solidification method, a thermal decomposition method, a chemical reduction method, an electrochemical method, a soft template method, an ultrasonic method, an electrolytic method, a phase transfer method, an optical reduction method, a photochemical method, an electroplating method, a grinding method, a vacuum evaporation method and the like. In general, the chemical liquid phase reduction method is mainly used, is the most common method and is the most important method, and the method has wide application in the field of electronic industry due to simple and feasible process flow, low cost and large production scale.

The washing process is an indispensable process in the silver powder chemical liquid phase reduction process, after the silver powder slurry is subjected to suction filtration through a corresponding suction filtration device, the silver powder slurry is put into a corresponding washing tank and is stirred and washed through washing liquid, a surface modifier is added into the washed material to disperse the material, and then the material is pumped and discharged into corresponding solid-liquid separation equipment to carry out solid-liquid separation treatment. At present, the suction filtration, stirring washing and dispersion treatment of silver powder slurry are carried out separately, three sets of corresponding processing equipment are required to be arranged, the processing cost is high, the whole process is connected time-consuming, and the washing efficiency of materials is relatively low.

Therefore, the silver powder slurry can be effectively subjected to suction filtration, stirring and washing and dispersion treatment, so that the production cost is reduced; and the connection efficiency between the working procedures can be obviously improved, so that the washing efficiency of materials is improved, and the washing equipment for preparing the conductive silver powder and the using method thereof are the research purpose of the invention.

Disclosure of Invention

The invention aims at solving the technical problems in the prior art, and provides a washing device for preparing conductive silver powder and a using method thereof.

The technical scheme of the invention is as follows:

a washing apparatus for the production of conductive silver powder, comprising:

the washing tank body is internally provided with a stirring shaft driven by a corresponding driving motor in a rotating way, a plurality of corresponding stirring blades are fixedly connected to the stirring shaft, and the bottom of the washing tank body is downwards connected with a discharging pipe provided with a discharging valve;

The feeding mechanism comprises a fixed container fixedly connected to the outer side wall of the top of the washing tank body, wherein the inner side of the fixed container is fixedly connected with a corresponding filter plate in an interval state, corresponding filter holes are uniformly distributed on the filter plate, a corresponding filter cloth is fixedly connected to the inner side of the filter plate, a discharging pipe with a feeding end connected to the bottom side of the fixed container is obliquely and fixedly connected to the inside of the washing tank body, a corresponding discharging valve is fixedly arranged on the discharging pipe, a corresponding sealing cover is detachably arranged on the upper part of the fixed container, and a feeding pipe provided with a feeding valve is outwards connected to the sealing cover;

The filter pressing mechanism comprises an air duct connected to a sealing cover at the inner side of the filter plate, a corresponding one-way valve is fixedly arranged on the air duct, a filter pressing pipe communicated to the inside of the fixed container is fixedly connected in a washing tank body at the upper side of the discharge pipe, a corresponding filter pressing piston is arranged in the filter pressing pipe, a corresponding iron plate is outwards fixedly connected to the filter pressing piston through a corresponding connecting piece, push rods and pull rods corresponding to the positions of the iron plate are fixedly connected to the upper part of the stirring shaft in a staggered manner at intervals, the length of each push rod is larger than that of each pull rod, and corresponding magnets are fixedly connected to the end parts of the pull rods respectively; when the push rod rotates to pass through the iron plate, the iron plate is pushed outwards, and when the pull rod rotates to pass through the iron plate, the magnet adsorbs and drives the iron plate inwards;

The liquid draining mechanism comprises a liquid collecting container which is connected to the bottom side of the fixed container in a communicating way, and the bottom of the liquid collecting container is outwards connected with a liquid draining pipe provided with a liquid draining valve.

The bottom side of the washing tank body is fixedly provided with a suction filtration pipe, the liquid inlet end of the suction filtration pipe is fixedly provided with a corresponding filter element, and the liquid outlet end of the suction filtration pipe is connected to a corresponding suction filtration pump.

The suction filtration pipe is fixedly provided with a corresponding siphon three-way pipe, and a siphon section of the siphon three-way pipe is connected to the upper side of the fixed container through a corresponding suction pressure pipe.

The stirring blades are square platy, the lower sides of the middle parts of the stirring blades are rotatably mounted on the stirring shafts through corresponding plug-in shafts, the stirring shafts on the back sides of the stirring blades are respectively and transversely fixedly connected with corresponding gear rod pieces, the top ends of the gear rod pieces are inclined, and the driving motor is a forward and reverse rotation adjustable speed motor; when the stirring shaft starts to rotate reversely, the upper part of the stirring blade is turned upwards after being pushed by the material, and the lower side of the stirring blade is propped against the side edge of the gear rod piece so as to vertically stir the material; when the stirring shaft starts to rotate positively, the upper part of the stirring blade is turned downwards after being pushed by the material, and the upper part of the stirring blade is obliquely abutted to the top surface of the gear rod piece.

The front side of stirring vane evenly upwards rigid coupling has a plurality of corresponding members of scattering, stirring vane's upper portion slope butt when the top surface of keeping off the position member, the member of scattering sets up upwards.

The speed of the stirring shaft when starting forward rotation is greater than the speed of the stirring shaft when starting reverse rotation.

The top surface inclination angle of the gear rod piece is not more than 30 degrees.

The top of the washing tank body is upwards connected with a surface modifier adding pipe provided with an additive feeding valve.

The washing tank body is supported and installed by corresponding supporting feet.

The application method of the washing equipment for preparing the conductive silver powder comprises the following specific steps:

S1, opening the feeding valve and the discharging valve, and directly feeding external conductive silver powder slurry into a washing tank body through the discharging pipe;

s2, starting the suction filtration pump to pump the liquid in the conductive silver powder slurry, and stopping the suction filtration pump after the pumping is completed;

s3, washing liquid enters the washing tank body through the feeding pipe, the discharging valve is closed, external conductive silver powder slurry enters the position inside the filter cloth through the feeding pipe, and the feeding valve is closed;

S4, the driving motor starts to rotate reversely, and the stirring blades vertically stir the materials and the washing liquid to enable the materials to fully contact with the washing liquid; along with the rotation of the stirring shaft, the push rod and the pull rod continuously rotate to pass through the position of the iron plate; when the push rod rotates to pass through the iron plate, the iron plate is pushed outwards to form filter pressing on the conductive silver powder slurry at the inner side of the filter cloth, and liquid in the conductive silver powder slurry is extruded out of the filter cloth and is collected by the liquid collecting container; when the pull rod rotates to pass through the iron plate, the magnet adsorbs and drives the iron plate inwards, at the moment, the one-way valve is opened, and external air enters the inner side of the filter cloth;

S5, after stirring is completed, the suction filtration pump is started again to perform suction filtration on the washing liquid; when the washing liquid passes through the siphon three-way pipe, the siphon section of the siphon three-way pipe pumps negative pressure to the fixed container so as to further pump and discharge liquid in the conductive silver powder slurry;

S6, after the suction filtration of the washing liquid is completed, the suction filtration pump is stopped, a surface modifier is added into the washing tank body through the surface modifier adding pipe, the driving motor is started to rotate positively, and the stirring blades incline to form dispersion operation on materials;

S7, pumping the modified material on the inner surface of the washing tank body to external solid-liquid separation equipment through the material discharging pipe for solid-liquid separation processing;

s8, opening a discharge valve on the discharge pipe to enable materials on the inner side of the filter cloth to enter the washing tank body;

And S9, repeating the steps S3-S8 so as to continuously wash the conductive silver powder material.

The invention has the advantages that:

1) On the basis of the improved design of the feeding mechanism, the invention is further additionally provided with the filter pressing mechanism, and the push rod and the pull rod continuously rotate through the position of the iron plate along with the rotation of the stirring shaft in the material washing or dispersing process. When the push rod rotates to pass through the iron plate, the iron plate is pushed outwards to form filter pressing on the conductive silver powder slurry at the inner side of the filter cloth, and liquid in the conductive silver powder slurry is extruded out of the filter cloth and is collected by the liquid collecting container; when the pull rod rotates to pass through the iron plate, the magnet adsorbs and drives the iron plate inwards, at the moment, the one-way valve is opened, and external air enters the inner side of the filter cloth. Therefore, in the process of washing or dispersing the materials, the next batch of materials to be washed can be synchronously subjected to filter pressing operation, so that the process connection efficiency of the invention is greatly improved, and the processing efficiency of the materials is improved.

2) The bottom side of the washing tank body is fixedly provided with the suction filtration pipe, the suction filtration pipe is fixedly provided with the siphon three-way pipe, and the siphon section of the siphon three-way pipe is connected to the upper side of the fixed container through the corresponding suction negative pressure pipe. In the process of pumping, filtering and discharging the washing liquid, a siphon three-way pipe can be used for forming negative pumping pressure on the fixed container, so that the next batch of materials to be washed is further subjected to pumping, the liquid content of the next batch of materials to be washed is obviously reduced, and the practical effect of the invention is effectively improved.

3) According to the invention, the stirring shafts on the back sides of the stirring blades are respectively and transversely fixedly connected with corresponding gear rod pieces, the top ends of the gear rod pieces are arranged in an inclined plane, when the stirring shafts are started to rotate reversely, the upper parts of the stirring blades are turned upwards after being pushed by materials, the lower sides of the stirring blades are abutted to the side edges of the gear rod pieces so as to vertically stir the materials, and therefore, the stirring blades are ensured to have enough stirring area for the materials, and the stirring effect on the materials is improved; when the stirring shaft starts to rotate positively, the upper part of the stirring blade is turned downwards after being pushed by the material, and the upper part of the stirring blade is obliquely abutted to the top surface of the gear rod piece so as to reduce the stirring area, and the stirring speed is increased and the rod piece is scattered so as to effectively carry out sufficient dispersion treatment on the material and enable the material to be in full contact with the surface modifier under the dispersion effect. Therefore, the silver powder slurry stirring and washing device can stir and wash and disperse and modify materials, and can realize filter pressing and suction filtration treatment of the materials to be washed in the next batch in the stirring and washing and dispersing and modifying processes, so that suction filtration, stirring and washing and dispersing treatment can be effectively carried out on the silver powder slurry, and the production cost is obviously reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a schematic view of a stirring shaft with stirring blades mounted thereon.

Fig. 4 is an exploded view of a part of the feed mechanism.

In the accompanying drawings: the washing tank 1, the driving motor 2, the stirring shaft 3, the stirring blade 4, the discharge pipe 5, the discharge valve 501, the feeding mechanism 6, the fixed container 601, the filter plate 602, the filter cloth 603, the discharge pipe 7, the discharge valve 701, the cover 8, the feed pipe 9, the feeding valve 901, the filter pressing mechanism 10, the gas guide pipe 1001, the check valve 1002, the filter pressing pipe 1003, the filter pressing piston 1004, the connecting piece 1005, the iron plate 1006, the push rod 1007, the pull rod 1008, the magnet 1009, the liquid discharging mechanism 11, the liquid collecting container 1101, the liquid discharging valve 1102, the liquid discharging pipe 1103, the suction filtration pipe 12, the filter element 13, the suction filtration pump 14, the siphon tee 15, the suction pressure pipe 16, the gear lever 17, the break-up lever 18, the surface modifier adding pipe 19, the additive feeding valve 20 and the support leg 21.

Detailed Description

For the convenience of understanding by those skilled in the art, the structure of the present invention will now be described in further detail with reference to the accompanying drawings:

embodiment one:

Referring to fig. 1 to 4, a washing apparatus for preparing conductive silver powder, comprising:

The washing tank body 1 is rotatably provided with a stirring shaft 3 driven by a corresponding driving motor 2, a plurality of corresponding stirring blades 4 are fixedly connected to the stirring shaft 3, and the bottom of the washing tank body 1 is downwards connected with a discharging pipe 5 provided with a discharging valve 501;

The feeding mechanism 6 comprises a fixed container 601 fixedly connected to the outer side wall of the top of the washing tank 1, wherein the inner side of the fixed container 601 is fixedly connected with a corresponding filter plate 602 in a spaced state, corresponding filter holes are uniformly distributed on the filter plate 602, a corresponding filter cloth 603 is fixedly connected to the inner side of the filter plate 602, a discharging pipe 7 with a feeding end connected to the bottom side of the fixed container 601 is obliquely fixedly connected in the washing tank 1, a corresponding discharging valve 701 is fixedly arranged on the discharging pipe 7, a corresponding sealing cover 8 is detachably arranged on the upper part of the fixed container 601, and a feeding pipe 9 provided with a feeding valve 901 is outwards connected to the sealing cover 8;

The filter pressing mechanism 10 comprises an air duct 1001 connected to a sealing cover 8 at the inner side of the filter plate 602, a corresponding one-way valve 1002 is fixedly arranged on the air duct 1001, a filter pressing pipe 1003 communicated to the inside of the fixed container 601 is fixedly connected in the washing tank 1 at the upper side of the discharging pipe 7, a corresponding filter pressing piston 1004 is arranged in the filter pressing pipe 1003, a corresponding iron plate 1006 is fixedly connected to the filter pressing piston 1004 outwards through a corresponding connecting piece 1005, a push rod 1007 and a pull rod 1008 corresponding to the position of the iron plate 1006 are fixedly connected to the upper part of the stirring shaft 3 in a staggered manner at intervals, the length of the push rod 1007 is longer than that of the pull rod 1008, and corresponding magnets 1009 are fixedly connected to the end parts of the pull rod 1008 respectively; when the push rod 1007 rotates to pass through the iron plate 1006, the iron plate 1006 is pushed outwards, and when the pull rod 1008 rotates to pass through the iron plate 1006, the magnet 1009 performs inward adsorption driving on the iron plate 1006;

The liquid draining mechanism 11 comprises a liquid collecting container 1101 which is connected to the bottom side of the fixed container in a communicating way, and a liquid draining pipe 1103 provided with a liquid draining valve 1102 is connected to the bottom of the liquid collecting container 1101 outwards.

On the basis of the improved design of the feeding mechanism 6, the invention is further provided with the filter pressing mechanism 10, and during the material washing or dispersing process, along with the rotation of the stirring shaft 3, the push rod 1007 and the pull rod 1008 continuously rotate to pass through the position of the iron plate 1006. When the push rod 1007 rotates to pass through the iron plate 1006, the iron plate 1006 is pushed outwards to press-filter the conductive silver powder slurry inside the filter cloth 603, and the liquid in the conductive silver powder slurry is extruded out of the filter cloth 603 and collected by the liquid collecting container 1101; when the pull rod 1008 rotates to pass through the iron plate 1006, the magnet 1009 is used for driving the iron plate 1006 to absorb the air inwards, at this time, the check valve 1002 is opened, and the outside air enters the inside of the filter cloth 603. Therefore, in the process of washing or dispersing the materials, the next batch of materials to be washed can be synchronously subjected to filter pressing operation, so that the process connection efficiency of the invention is greatly improved, and the processing efficiency of the materials is improved.

The bottom side of the washing tank body 1 is fixedly provided with a suction filtration pipe 12, the liquid inlet end of the suction filtration pipe 12 is provided with a corresponding filter element 13, and the liquid outlet end of the suction filtration pipe 12 is connected to a corresponding suction filtration pump 14. A corresponding siphon tee 15 is fixedly installed on the suction filtration pipe 12, and a siphon section of the siphon tee 15 is connected to the upper side of the fixed container 601 through a corresponding suction pressure pipe 16.

In the process of pumping, filtering and discharging the washing liquid, a pumping negative pressure can be formed on the fixed container 601 through the siphon three-way pipe 15, so that the pumping and filtering operation is further carried out on the materials to be washed in the next batch, the liquid content to be washed in the next batch is obviously reduced, and the practical effect of the invention is effectively improved.

The stirring blades 4 are square plate-shaped, the lower sides of the middle parts of the stirring blades 4 are rotatably mounted on the stirring shaft 3 through corresponding plug-in shafts, the stirring shafts 3 on the back sides of the stirring blades 4 are respectively and transversely fixedly connected with corresponding gear rod pieces 17, the top ends of the gear rod pieces 17 are inclined, and the driving motor 2 is a forward and reverse rotation adjustable speed motor; when the stirring shaft 3 starts to rotate reversely, the upper part of the stirring blade 4 is turned upwards after being pushed by the material, and the lower side of the stirring blade 4 is abutted to the side edge of the gear rod piece 17 so as to vertically stir the material; when the stirring shaft 3 starts to rotate positively, the upper part of the stirring blade 4 is turned downwards after being pushed by the material, and the upper part of the stirring blade 4 is obliquely abutted to the top surface of the gear rod piece 17.

The front side of the stirring blade 4 is uniformly and upwardly fixedly connected with a plurality of corresponding scattering rod pieces 18, and when the upper part of the stirring blade 4 is obliquely abutted to the top surface of the gear rod piece 17, the scattering rod pieces 18 are upwards arranged.

The speed of the stirring shaft 3 when starting forward rotation is higher than the speed of the stirring shaft 3 when starting reverse rotation. The top surface of the gear lever 17 is inclined by an angle of not more than 30 °.

When the stirring shaft 3 starts to rotate reversely, the upper part of the stirring blade 4 is turned upwards after being pushed by the material, the lower side of the stirring blade 4 is propped against the side edge of the gear rod piece 17 so as to vertically stir the material, thereby ensuring that the stirring blade 4 has enough stirring area for the material so as to promote the stirring effect on the material; when the stirring shaft 3 starts to rotate positively, the upper part of the stirring blade 4 is turned downwards after being pushed by the material, the upper part of the stirring blade 4 is obliquely abutted to the top surface of the gear rod piece 17, so that the stirring area is reduced, and the materials are fully dispersed by the lifting of the stirring speed and the setting of the scattering rod piece 18, so that the materials are fully contacted with the surface modifier under the dispersing action. Therefore, the silver powder slurry stirring and washing device can stir and wash and disperse and modify materials, and can realize filter pressing and suction filtration treatment of the materials to be washed in the next batch in the stirring and washing and dispersing and modifying processes, so that suction filtration, stirring and washing and dispersing treatment can be effectively carried out on the silver powder slurry, and the production cost is obviously reduced.

A surface modifier addition pipe 19 provided with an additive feed valve 20 is connected upward to the top of the wash tank 1. The washing tank 1 is supported by respective legs 21.

Embodiment two:

the method for using the washing equipment for preparing the conductive silver powder, which is described in the embodiment one, comprises the following specific steps:

s1, opening a feeding valve 901 and a discharging valve 701, and enabling external conductive silver powder slurry to directly enter a washing tank body 1 through a discharging pipe 7;

S2, starting the suction filtration pump 14 to pump the liquid in the conductive silver powder slurry, and stopping the suction filtration pump 14 after the pumping is completed;

S3, washing liquid enters the washing tank body 1 through the feeding pipe 9, the discharging valve 701 is closed, external conductive silver powder slurry enters the position inside the filter cloth 603 through the feeding pipe 9, and the feeding valve 901 is closed;

S4, the driving motor 2 starts to rotate reversely, and the stirring blades 4 vertically stir the materials and the washing liquid to enable the materials to fully contact with the washing liquid; as the stirring shaft 3 rotates, the push rod 1007 and the pull rod 1008 continuously rotate to pass through the position of the iron plate 1006; when the push rod 1007 rotates to pass through the iron plate 1006, the iron plate 1006 is pushed outwards to press-filter the conductive silver powder slurry inside the filter cloth 603, and the liquid in the conductive silver powder slurry is extruded out of the filter cloth 603 and collected by the liquid collecting container 1101; when the pull rod 1008 rotates to pass through the iron plate 1006, the magnet 1009 performs inward adsorption driving on the iron plate 1006, at this time, the one-way valve 1002 is opened, and external air enters the inside of the filter cloth 603;

S5, after stirring is completed, the suction filtration pump 14 is started again to perform suction filtration on the washing liquid; when the washing liquid passes through the siphon tee 15, the siphon section of the siphon tee 15 pumps the negative pressure of the fixed container 601 so as to pump and discharge the liquid in the conductive silver powder slurry further;

S6, after the washing liquid is filtered, the suction filtration pump 14 is stopped, a surface modifier is added into the washing tank 1 through the surface modifier adding pipe 19, the driving motor 2 is started to rotate positively, and the stirring blades 4 are inclined to form dispersion operation on materials;

s7, pumping the modified material on the inner surface of the washing tank 1 to external solid-liquid separation equipment through the material discharging pipe 5 for solid-liquid separation processing;

s8, opening a discharge valve 701 on the discharge pipe 7 to enable materials on the inner side of the filter cloth 603 to enter the washing tank 1;

And S9, repeating the steps S3-S8 so as to continuously wash the conductive silver powder material.

In the material washing process, the liquid discharge valve 1102 is only required to be opened at fixed time, so that the liquid material stored in the liquid collecting container 1101 can be discharged in time.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (10)

1. A washing apparatus for producing conductive silver powder, comprising:

The washing tank body (1), a stirring shaft (3) driven by a corresponding driving motor (2) is rotatably arranged in the washing tank body (1), a plurality of corresponding stirring blades (4) are fixedly connected to the stirring shaft (3), and a discharging pipe (5) provided with a discharging valve (501) is downwards connected to the bottom of the washing tank body (1);

The feeding mechanism (6) comprises a fixed container (601) fixedly connected to the outer side wall of the top of the washing tank body (1), a corresponding filter plate (602) is fixedly connected to the inner side of the fixed container (601) in an interval state, corresponding filter holes are uniformly distributed on the filter plate (602), a corresponding filter cloth (603) is fixedly connected to the inner side of the filter plate (602), a discharging pipe (7) with a feeding end connected to the bottom side of the fixed container (601) is obliquely fixedly connected in the washing tank body (1), a corresponding discharging valve (701) is fixedly arranged on the discharging pipe (7), a corresponding sealing cover (8) is detachably arranged on the upper portion of the fixed container (601), and a feeding pipe (9) provided with the feeding valve (901) is connected to the outer side of the sealing cover (8);

The filter pressing mechanism (10) comprises an air duct (1001) connected to a sealing cover (8) on the inner side of the filter plate (602), a corresponding one-way valve (1002) is fixedly arranged on the air duct (1001), a filter pressing pipe (1003) communicated to the inside of the fixed container (601) is fixedly connected in a washing tank (1) on the upper side of the discharge pipe (7), a corresponding filter pressing piston (1004) is arranged in the filter pressing pipe (1003), a corresponding iron plate (1006) is fixedly connected to the filter pressing piston (1004) outwards through a corresponding connecting piece (1005), push rods (1007) and pull rods (1008) corresponding to the positions of the iron plate (1006) are fixedly connected to the upper portion of the stirring shaft (3) in a staggered mode at intervals, the length of each push rod (1007) is larger than that of each pull rod (1008), and corresponding magnets (1009) are fixedly connected to the end portions of each pull rod (1008); the push rod (1007) pushes the iron plate (1006) outwards when rotating through the iron plate (1006), and the magnet (1009) adsorbs and drives the iron plate (1006) inwards when the pull rod (1008) rotates through the iron plate (1006);

The liquid draining mechanism (11) comprises a liquid collecting container (1101) which is connected to the bottom side of the fixed container in a communicating way, and a liquid draining pipe (1103) provided with a liquid draining valve (1102) is connected to the bottom of the liquid collecting container (1101) outwards.

2. The washing device for preparing the conductive silver powder according to claim 1, wherein a suction filtration pipe (12) is fixedly arranged at the bottom side of the washing tank body (1), a corresponding filter element (13) is fixedly arranged at the liquid inlet end of the suction filtration pipe (12), and the liquid outlet end of the suction filtration pipe (12) is connected to a corresponding suction filtration pump (14).

3. The washing device for preparing the conductive silver powder according to claim 2, wherein a corresponding siphon tee pipe (15) is fixedly arranged on the suction filtration pipe (12), and a siphon section of the siphon tee pipe (15) is connected to the upper side of the fixed container (601) through a corresponding suction negative pressure pipe (16).

4. The washing equipment for preparing the conductive silver powder according to claim 3, wherein the stirring blades (4) are square plate-shaped, the lower sides of the middle parts of the stirring blades (4) are rotatably mounted on the stirring shaft (3) through corresponding plug-in shafts, corresponding gear rod pieces (17) are transversely fixedly connected to the stirring shaft (3) on the back sides of the stirring blades (4), the top ends of the gear rod pieces (17) are inclined, and the driving motor (2) is a positive and negative rotation adjustable speed motor; when the stirring shaft (3) starts to rotate reversely, the upper part of the stirring blade (4) is upwards turned over after being pushed by the material, and the lower side of the stirring blade (4) is abutted to the side edge of the gear rod piece (17) so as to vertically stir the material; when the stirring shaft (3) starts to rotate positively, the upper part of the stirring blade (4) is turned downwards after being pushed by materials, and the upper part of the stirring blade (4) is obliquely abutted to the top surface of the gear rod piece (17).

5. The washing equipment for preparing the conductive silver powder according to claim 4, wherein a plurality of corresponding scattering rod pieces (18) are uniformly and fixedly connected to the front side surface of the stirring blade (4) upwards, and the scattering rod pieces (18) are upwards arranged when the upper parts of the stirring blade (4) are obliquely abutted to the top surfaces of the gear rod pieces (17).

6. The washing apparatus for producing conductive silver powder according to claim 5, wherein the speed at which the stirring shaft (3) starts forward rotation is greater than the speed at which the stirring shaft (3) starts reverse rotation.

7. The washing equipment for preparing the conductive silver powder according to claim 6, wherein the inclination angle of the top surface of the gear lever (17) is not more than 30 degrees.

8. The washing device for preparing the conductive silver powder according to claim 7, wherein the top of the washing tank body (1) is upwardly connected with a surface modifier adding pipe (19) provided with an additive feeding valve (20).

9. A washing device for the preparation of conductive silver powder according to claim 1, characterized in that the washing tank (1) is supported by respective feet (21).

10. The method for using a washing device for preparing conductive silver powder according to claim 8, comprising the following specific steps:

s1, opening a feeding valve (901) and a discharging valve (701), and enabling external conductive silver powder slurry to directly enter a washing tank body (1) through a discharging pipe (7);

S2, starting the suction filtration pump (14) to pump and discharge liquid in the conductive silver powder slurry, and stopping the suction filtration pump (14) after the pumping and discharging are completed;

S3, washing liquid enters the washing tank body (1) through the feeding pipe (9), the discharging valve (701) is closed, external conductive silver powder slurry enters the position inside the filter cloth (603) through the feeding pipe (9), and the feeding valve (901) is closed;

S4, the driving motor (2) starts to rotate reversely, and the stirring blades (4) vertically stir the materials and the washing liquid to enable the materials to be fully contacted with the washing liquid; with the rotation of the stirring shaft (3), the push rod (1007) and the pull rod (1008) continuously rotate to pass through the position of the iron plate (1006); when the push rod (1007) rotates to pass through the iron plate (1006), the iron plate (1006) is pushed outwards to form filter pressing on the conductive silver powder slurry on the inner side of the filter cloth (603), and the liquid in the conductive silver powder slurry is extruded out of the filter cloth (603) and is collected by the liquid collecting container (1101); when the pull rod (1008) rotates to pass through the iron plate (1006), the magnet (1009) performs inward adsorption driving on the iron plate (1006), at the moment, the one-way valve (1002) is opened, and external air enters the inner side of the filter cloth (603);

S5, after stirring is completed, the suction filtration pump (14) is started again to perform suction filtration on the washing liquid; when the washing liquid passes through the siphon three-way pipe (15), the siphon section of the siphon three-way pipe (15) pumps negative pressure to the fixed container (601) so as to further pump and discharge liquid in the conductive silver powder slurry;

S6, after the suction filtration of the washing liquid is completed, the suction filtration pump (14) is stopped, a surface modifier is added into the washing tank body (1) through the surface modifier adding pipe (19), the driving motor (2) starts to rotate positively, and the stirring blades (4) incline to form dispersion operation on materials;

s7, pumping the material subjected to the modification on the inner surface of the washing tank body (1) to external solid-liquid separation equipment through the material discharging pipe (5) for solid-liquid separation processing;

S8, opening a discharge valve (701) on the discharge pipe (7) to enable materials on the inner side of the filter cloth (603) to enter the washing tank body (1);

And S9, repeating the steps S3-S8 so as to continuously wash the conductive silver powder material.