Silver paste filtering device for conductive plastic potentiometer resistor

Abstract

The invention discloses a silver slurry filtering device for a conductive plastic potentiometer resistor, comprising a motor, a transmission shaft, a scraper mounting member, a scraper, a filter mounting member, a filter, a connecting member, a slurry barrel, a pressing member and a feeding pipe, wherein the transmission shaft is connected to the rotating shaft of the motor, the scraper mounting member is connected to the transmission shaft, the scraper is mounted at the lower end of the scraper mounting member, the filter is mounted on the filter mounting member and is located below the scraper, the two ends of the connecting member are respectively connected to the transmission shaft and the slurry barrel, the pressing member is placed in the slurry barrel from top to bottom, the lower end of the slurry barrel is provided with a discharge pipe, one end of the feeding pipe is connected to the discharge pipe and the other end is placed above the filter. The invention can ensure that the slurry on the filter is not too much or too little, thereby achieving a better filtering effect. At the same time, since the slurry on the filter is not too much, a silk screen can be used, and it can be glued and installed on the filter mounting member, so that the filter is easy to quickly replace, thereby improving the filtering effect and efficiency.

Description

Technical Field

[0001] The invention relates to a silver paste filtering device, in particular to a silver paste filtering device for a conductive plastic potentiometer resistor. Background Art

[0002] Silver paste is one of the important raw materials for resistors used in conductive plastic potentiometers. Its viscosity and particle size will directly affect the quality of the resistor, thereby affecting the quality of the conductive plastic potentiometer. Therefore, before producing the resistor, the silver paste needs to be filtered to ensure that the particle size of the silver paste meets the requirements. Due to the high viscosity of the silver paste, it is difficult to filter it without external force intervention.

[0003] Traditional technology usually uses manual scraper filtering, that is, adding an appropriate amount of silver paste to a screen with a suitable mesh size, and then manually scraping the material back and forth on the screen with a scraper to make the silver paste with the appropriate particle size drip through the screen into the container. This filtering method is very inefficient, and the screen is easily damaged due to uneven force applied by workers, making it difficult to ensure the particle size of the silver paste.

[0004] Conventional filtering devices for general electronic slurries generally use a motor to drive a scraper to rotate to achieve the purpose of filtering, but all of them adopt a structure in which a large amount of slurry is contained in a barrel and the scraper is placed in the barrel. Generally, a stirring mechanism is also provided in the barrel to improve the filtering effect.

[0005] For example, the utility model patent with the patent number "ZL 201420643796.8" discloses an electronic slurry filtering device, which uses a synchronous motor as the main drive of the machine head, and uses a ball screw lifting mechanism driven by the motor to pull the high-precision slider installed on the column to drive the machine head as the machine head lifting mechanism. The polyurethane scraper is installed on the main shaft through a clamp to make a rotational motion. A circular mesh frame is used as the filter screen and is installed in the middle of the receiving barrel and the filter barrel. When the scraper rotates and applies a certain pressure to the filter screen, the high-viscosity electronic slurry in the filter barrel is squeezed out from the gap of the wire mesh due to the pressure of the scraper and flows into the receiving barrel. The scraper continues to rotate to achieve continuous filtration. Large particles of impurities cannot pass through the gap of the wire mesh and are left in the filter barrel, thereby achieving the purpose of filtration.

[0006] For another example, the utility model patent with the patent number "ZL 201920954359.0" discloses an intelligent slurry filtering device for lithium battery production, including a filter box, a feed hopper, a stirring motor, a stirring tube, a horizontal stirring frame, a large-aperture filter plate, positioning holes, an auxiliary filtering and extruding frame structure, an auxiliary crushing frame structure, a detachable material frame structure, a fine-mesh plate, a discharge hopper, support legs, a discharge pipe, a discharge valve, a controller and a regulating switch. The feed hopper is plugged into the left and right sides of the upper part of the filter box; the stirring motor bolts are installed in the middle and upper part of the filter box; the stirring tube is arranged on the inner side of the filter box and is keyed to the lower output shaft of the stirring motor at the upper end.

[0007] The scrapers of the above-mentioned traditional electronic slurry filtering devices are placed in the filter barrel or filter box for holding the slurry. Since there is a lot of slurry, it is difficult to achieve a smooth filtering effect even with a stirring mechanism. For silver slurry with high viscosity, the above-mentioned device cannot achieve effective filtering. At the same time, since it needs to bear a large gravity, the filter installed at the bottom of the filter barrel or filter box needs to use a hard mesh, or a hard bracket and a wire mesh, both of which need to be fixedly installed. In this way, it is difficult to quickly replace the filter or wire mesh as needed, and if there is a hard bracket under the wire mesh, it will also affect the filtering effect, thereby reducing the filtering effect and efficiency. Summary of the invention

[0008] The purpose of the present invention is to solve the above problems and provide a silver slurry filtering device for conductive plastic potentiometer resistors, which has good filtering effect and high efficiency on slurry with high viscosity.

[0009] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0010] A silver paste filtering device for a conductive plastic potentiometer resistor comprises a motor, a transmission shaft, a scraper mounting member, a scraper, a filter mounting member and a filter, wherein the upper end of the vertical transmission shaft is connected to the rotating shaft of the motor, the upper end of the scraper mounting member is connected to the lower end of the transmission shaft, the scraper is mounted on the lower end of the scraper mounting member, the filter is mounted on the filter mounting member and is located below the scraper, and the silver paste filtering device for a conductive plastic potentiometer resistor also comprises a connector, a slurry barrel, a pressing member and a feed pipe, the first end of the two lateral ends of the connector is connected to the transmission shaft, the second end of the two lateral ends of the connector is connected to the vertical slurry barrel, the upper end of the slurry barrel is open, the pressing member is placed in the slurry barrel from top to bottom and is used to use its own gravity to press down the slurry in the slurry barrel, the lower end of the slurry barrel is provided with a discharge pipe, one end of the feed pipe is connected to the discharge pipe, and the other end of the feed pipe is placed above the filter.

[0011] Preferably, in order to improve the processing and assembly efficiency of the connecting piece, a vertical connecting hole is provided at the first end of the connecting piece, the lower end of the transmission shaft and the upper end of the scraper mounting piece are respectively placed in the connecting holes and fixed by screws, a sunken connecting piece groove is provided on the second end of the connecting piece, a vertical connecting piece through hole is provided at the center position of the connecting piece groove, the lower end of the slurry barrel is placed in the connecting piece groove and the discharge pipe passes through the connecting piece through hole.

[0012] Preferably, in order to avoid relative rotation between the transmission shaft, the connecting member and the scraper mounting member, a vertical plane is respectively provided on the hole wall of the connecting hole, the lower outer wall of the transmission shaft and the upper outer wall of the scraper mounting member, and the plane on the lower outer wall of the transmission shaft and the plane on the upper outer wall of the scraper mounting member are respectively in contact with the plane on the hole wall of the connecting hole.

[0013] Preferably, in order to further stabilize the installation of the slurry barrel, a mounting hole is also provided in the transverse middle section of the connecting piece, the lower end of the vertical fixing rod is connected to the connecting piece through the mounting hole, the upper end of the fixing rod is connected to the transverse fixing ring, and the fixing ring is mounted on the outside of the slurry barrel through its own vertical through hole.

[0014] Preferably, in order to gradually reduce the slurry flow cross-sectional area and more accurately control the flow rate of the slurry, the lower end of the slurry cylinder is provided with a transition pipe with a diameter larger than that of the discharge pipe, and the upper end of the discharge pipe is connected to the lower end of the transition pipe.

[0015] Preferably, in order to facilitate the placement and removal of the pressing piece and improve the pressing effect, to prevent the slurry from overflowing upward from the gap between the pressing piece and the slurry barrel and to improve the smoothness of the end surface of the pressing piece, the pressing piece is a vertical column, the upper end of the pressing piece is provided with a grip portion for easy holding by hand, the lower end of the pressing piece is provided with a sleeve portion for easy installation of a sealing member, the sleeve portion is provided with a vertical fully sealed silicone seal, and the silicone seal is in close contact with the inner wall of the slurry barrel but can slide up and down.

[0016] Preferably, in order to reduce the mass of the slurry cylinder and facilitate the installation of the feed pipe, the slurry cylinder is a silicone cylinder, and the feed pipe is a silicone hose and is fixedly mounted on the scraper mounting member through a fixing member.

[0017] Preferably, in order to support the scraper mounting piece by a bearing to improve the working stability of the transmission component, a horizontal mounting plate is provided at the lower part of the scraper mounting piece, a downwardly protruding mounting boss is provided under the mounting plate, the outer diameter of the mounting boss is smaller than the outer diameter of the mounting plate, a vertical material pipe through hole is provided on the mounting plate and the mounting boss for the material conveying pipe to pass through, a scraper mounting groove is provided at the middle part of the lower end of the scraper mounting piece, the scraper is placed in the scraper mounting groove and fixed by screws; a sunken mounting groove is provided at the middle part of the filter screen mounting piece, a vertical filter hole is provided at the center position of the mounting groove, the filter screen is installed on the bottom hole wall of the filter hole and completely covers the filter hole, a bearing is installed in the mounting groove, the outer wall of the outer ring of the bearing is in contact with the groove wall of the mounting groove, and the inner ring of the bearing is sleeved outside the mounting boss.

[0018] Preferably, in order to improve the scraping uniformity of the scraper and reduce the contact area between the scraper and the filter screen and facilitate the processing of the scraper, the scraper is a rectangular silicone plate, and the scraper has an angle of 5-30° with the vertical, and the lowermost edge of the scraper is close to or in contact with the filter screen. In order to improve the working stability of the motor and the rotating transmission parts, the motor is installed on a fixed base through a motor mounting part, and a vertical transmission shaft blind hole is provided at the upper end of the transmission shaft. The rotating shaft of the motor is located in the transmission shaft blind hole and is fixed by screws. In order to ensure that the scraper can scrape the area where the filter hole is located as comprehensively as possible, the rotating shaft of the motor, the transmission shaft and the upper end of the scraper mounting part are coaxial and the axial centerline passes through the midpoint of the lowermost edge of the scraper.

[0019] Preferably, in order to reduce rotational friction and improve the stability of the bearing, the bearing is a rolling bearing, the edge of the mounting plate presses the inner ring of the bearing from top to bottom, and a pressure plate is installed on the filter mounting piece, and the pressure plate presses the outer ring of the bearing from top to bottom. In order to facilitate the observation of the filtering condition, the mounting plate and the mounting boss are provided with a notch for observing the filter at a position around the scraper mounting groove. In order to facilitate the replacement of the filter, the filter is a wire mesh and is glued and mounted on the filter mounting piece. In order to facilitate the installation of the filter mounting piece and the material receiving, the filter mounting piece is connected to the base below the filter mounting piece through a plurality of columns, and a sunken base trough is provided at the center of the base, and a material receiving container is placed in the base trough.

[0020] The beneficial effects of the present invention are:

[0021] The present invention increases a connecting piece, a slurry cylinder, a pressing piece and a feeding pipe, installs the slurry cylinder on the transmission shaft and rotates synchronously with the transmission shaft, presses the slurry downward by the pressing piece, so that the slurry can always automatically flow out to the filter screen through the feeding pipe, and its flow rate can be controlled by the mass of the pressing piece and the inner diameter of the feeding pipe, thereby ensuring that there is neither too much nor too little slurry on the filter screen, thereby achieving a better filtering effect and avoiding the problem of placing the scraper in the slurry to make it difficult to rotate. At the same time, since there is never too much slurry on the filter screen, a wire mesh can be used without a support frame, and it can be glued and installed on the filter screen mounting piece, so that the filter screen can be quickly replaced as needed, thereby improving the filtering effect and efficiency.

[0022] In addition, due to the gravity of the pressing piece, the slurry in the slurry barrel can continuously flow onto the filter screen. Workers only need to regularly add slurry to the slurry barrel, take out the filtered slurry, and replace the filter screen. They can do other work during the slurry filtration period, which reduces labor costs. After the scraper is fixedly installed on the scraper mounting piece, the contact tension between it and the filter screen is fixed, which can better ensure the particle size of the slurry after filtration and is not easy to damage the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a partial cross-sectional front view of the structure of the silver paste filtering device for the resistor body of the conductive plastic potentiometer of the present invention;

[0024] Figure 2 1 is a schematic diagram of the main structure of the transmission shaft of the silver paste filtering device for the conductive plastic potentiometer resistor of the present invention, and the ratio in the figure is greater than Figure 1 ;

[0025] Figure 3 The schematic diagram of the structure of the transmission shaft of the silver paste filtering device for the conductive plastic potentiometer resistor of the present invention is viewed from above. Figure 2 same;

[0026] Figure 4 yes Figure 2 The AA section view in the figure is proportional to Figure 2 same;

[0027] Figure 5 1 is a top view of the structure of the connecting piece of the silver paste filtering device for the conductive plastic potentiometer resistor of the present invention, and the ratio in the figure is greater than Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the main structure of the slurry cylinder of the silver slurry filtering device for the conductive plastic potentiometer resistor of the present invention, and the ratio in the figure is greater than Figure 1 ;

[0029] Figure 7The schematic diagram of the main structure of the pressing piece of the silver paste filtering device for the conductive plastic potentiometer resistor of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 8 The schematic diagram of the front view of the scraper mounting member of the silver paste filtering device for the conductive plastic potentiometer resistor of the present invention is shown in FIG. Figure 1 ;

[0031] Fig. 9 1 is a top view of the structure of the scraper mounting member of the silver paste filtering device for the conductive plastic potentiometer resistor of the present invention, and the proportions in the figure are Figure 8 same;

[0032] Fig.10 1 is a schematic diagram of a top view of a filter screen mounting member of a silver paste filtering device for a conductive plastic potentiometer resistor according to the present invention, and the ratio in the figure is smaller than Figure 1 . DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings:

[0034] like Figure 1 , Figure 2 , Figure 6 and Figure 8 As shown, the silver paste filtering device for the resistor of the conductive plastic potentiometer of the present invention comprises a motor 1, a transmission shaft 11, a scraper mounting member 13, a scraper 14, a filter screen mounting member 18, a filter screen 15, a connecting member 12, a slurry cylinder 5, a material pressing member 4 and a feeding pipe 9, wherein the upper end of the vertical transmission shaft 11 is connected to the rotating shaft (not visible in the figure) of the motor 1, the upper end 130 of the scraper mounting member 13 is connected to the lower end 113 of the transmission shaft 11, the scraper 14 is mounted on the lower end of the scraper mounting member 13, and the filter screen 15 is mounted on the upper end of the scraper mounting member 13. The filter screen mounting member 18 is located below the scraper 14, the first end of the connecting member 12 is connected to the transmission shaft 11, the second end of the connecting member 12 is connected to the vertical slurry barrel 5, the upper end of the slurry barrel 5 is open, the pressing member 4 is placed in the slurry barrel 5 from top to bottom and is used to use its own gravity to press down the slurry in the slurry barrel 5, the lower end of the slurry barrel 5 is provided with a discharge pipe 51, one end of the delivery pipe 9 is connected to the discharge pipe 51, and the other end of the delivery pipe 9 is placed above the filter screen 15.

[0035] like Figure 1-Figure 10 As shown, the present invention also discloses the following more specific preferred structures. According to actual needs, the above structure can be superimposed and combined with one or more of the following structures to form a more optimized specific technical solution.

[0036] In order to improve the processing and assembly efficiency of the connecting member 12, a vertical connecting hole 123 is provided at the first end of the connecting member 12. The lower end of the transmission shaft 11 and the upper end of the scraper mounting member 13 are respectively placed in the connecting hole 123 and fixed by screws. The fixing screws are not shown in the figure. A plurality of such screws pass through the transverse screw holes provided at the first end of the connecting member 12 to fix the corresponding lower end of the transmission shaft 11 and the upper end of the scraper mounting member 13. A sunken connecting member groove 120 is provided on the second end of the connecting member 12. A vertical connecting member through hole 121 is provided at the center position of the connecting member groove 120. The lower end of the slurry barrel 5 is placed in the connecting member groove 120 and the discharge pipe 51 passes through the connecting member through hole 121.

[0037] In order to avoid relative rotation between the transmission shaft 11, the connecting member 12 and the scraper mounting member 13, a vertical plane 124 is provided on the hole wall of the connecting hole 123, a vertical plane 114 is provided on the lower end outer wall of the transmission shaft 11, and a vertical plane 137 is provided on the upper end outer wall of the scraper mounting member 13. The plane 114 on the lower end outer wall of the transmission shaft 11 and the plane 137 on the upper end outer wall of the scraper mounting member 13 are in contact with the plane 124 on the hole wall of the connecting hole 123 respectively.

[0038] In order to further stably install the slurry barrel 5, a mounting hole 122 is also provided in the transverse middle section of the connecting piece 12. The lower end of the vertical fixing rod 7 is connected to the connecting piece 12 through the mounting hole 122, and the upper end of the fixing rod 7 is connected to the transverse fixing ring 6. The fixing ring 6 is mounted on the outside of the slurry barrel 5 through its own vertical through hole.

[0039] In order to gradually reduce the slurry flow cross-sectional area and more accurately control the flow rate of the slurry, a transition pipe 50 having a diameter greater than that of the discharge pipe 51 is provided at the lower end of the slurry barrel 5, and the upper end of the discharge pipe 51 is connected to the lower end of the transition pipe 50.

[0040] In order to facilitate the placement and removal of the pressing piece 4 and improve the pressing effect, prevent the slurry from overflowing upward from the gap between the pressing piece 4 and the slurry barrel 5 and improve the smoothness of the pressing end surface, the pressing piece 4 is a vertical column, and the upper end of the pressing piece 4 is provided with a gripping portion 40 for easy holding by hand, and the lower end of the pressing piece 4 is provided with a sleeve portion 41 for easy installation of a sealing member, and a vertical fully sealed silicone seal 8 is sleeved on the sleeve portion 41, and the silicone seal 8 is in close contact with the inner wall of the slurry barrel 5 but can slide up and down.

[0041] In order to reduce the weight of the slurry cylinder 5 and facilitate the installation of the feed pipe 9, the slurry cylinder 5 is a silicone cylinder, and the feed pipe 9 is a silicone hose and is fixedly installed on the scraper mounting part 13 through the fixing part 10; in order to control the on and off of the slurry, a valve can be installed on the discharge pipe 51 or the feed pipe 9.

[0042] In order to support the scraper mounting member 13 through the bearing 16 to improve the working stability of the transmission component, a horizontal mounting plate 131 is provided at the lower part of the scraper mounting member 13, and a downwardly protruding mounting boss 132 is provided under the mounting plate 131. The outer diameter of the mounting boss 132 is smaller than the outer diameter of the mounting plate 131. A vertical material pipe through hole 136 for the material conveying pipe 9 to pass through is provided on the mounting plate 131 and the mounting boss 132. A mounting screw hole 135 for installing the fixing member 10 is also provided on the mounting plate 131. A scraper mounting groove 133 is provided in the middle of the lower end of the scraper mounting member 13, and the scraper 14 is placed on the scraper The scraper 14 is fixed in the mounting groove 133 by screws, which are not shown in the figure. A plurality of such screws pass through the transverse screw holes provided on the scraper mounting member 13 to fix the scraper 14. A sunken mounting member groove 181 is provided in the transverse middle part of the filter screen mounting member 18, and a vertical filter hole 182 is provided at the center position of the mounting member groove 181. The filter screen 15 is installed on the bottom hole wall of the filter hole 182 and completely covers the filter hole 182. A bearing 16 is installed in the mounting member groove 181, and the outer wall of the outer ring of the bearing 16 contacts the groove wall of the mounting member groove 181, and the inner ring of the bearing 16 is sleeved on the outside of the mounting boss 132.

[0043] In order to improve the scraping uniformity of the scraper 14 and reduce the contact area between the scraper 14 and the filter 15 while facilitating the processing of the scraper 14, the scraper 14 is a rectangular silicone plate ( Figure 1 The angle of view of the scraper 14 shown in the figure is a side view, that is, what is seen is the end face of the wide side, and the width of the end face is the thickness of the scraper 14), the scraper 14 has an angle of 5-30° with the vertical, preferably 10-20°, and the lowermost edge of the scraper 14 is close to or in contact with the filter 15; in order to improve the working stability of the motor 1 and the rotating transmission parts, the motor 1 is installed on a fixed foundation 3 (such as a wall) through a motor mounting member 2, and a vertical transmission shaft blind hole 112 is provided at the upper end of the transmission shaft 11, and the rotating shaft of the motor 1 It is located in the blind hole 112 of the transmission shaft and fixed by screws. The fixing screws are not shown in the figure. After multiple screws pass through the transverse screw holes 110 on the transmission shaft 11, the rotating shaft is fixed. A groove 111 is also provided at the corresponding position on the transmission shaft 11 and the nut of the screw is placed in the groove; in order to ensure that the scraper 14 can scrape the area where the filter hole 182 is located as comprehensively as possible, the rotating shaft of the motor 1, the transmission shaft 11 and the upper end 130 of the scraper mounting member 13 are coaxial and the axial line passes through the midpoint of the lowermost edge of the scraper 14.

[0044] In order to reduce the rotational friction and improve the stability of the bearing 16, the bearing 16 is a rolling bearing, the edge of the mounting plate 131 presses the inner ring of the bearing 16 from top to bottom, and a pressure plate 17 is installed on the filter mounting member 18, and the pressure plate 17 presses the outer ring of the bearing 16 from top to bottom; in order to facilitate the observation of the filtering situation, a notch 134 for observing the filter 15 is provided at a position around the scraper mounting groove 133 on the mounting plate 131 and the mounting boss 132; in order to facilitate the replacement of the filter 15, the filter 15 is a wire mesh and is glued and installed on the filter mounting member 18; in order to facilitate the installation of the filter mounting member 18 and the material connection, the filter mounting member 18 is connected to the base 21 located below the filter mounting member 18 through a plurality of columns 19, and the upper ends of the plurality of columns 19 are respectively connected to the filter mounting member 18 through the mounting holes 180 provided on the filter mounting member 18, and a sunken base sink 210 is provided at the center of the base 21, and a material connection container 20 is placed in the base sink 210.

[0045] like Figure 1-Figure 10 As shown, when in use, first take out the pressing piece 4, inject the silver paste for the resistor of the conductive plastic potentiometer into the paste tube 5, inject it to half or more of the depth of the paste tube 5, then put the pressing piece 4 into the paste tube 5 from top to bottom, under the self-weight pressure of the pressing piece 4, the paste passes through the transition pipe 50, the discharge pipe 51, and the feed pipe 9 in sequence and then continues to flow onto the filter screen 15 until the paste in the paste tube 5 is exhausted, and then the silver paste is re-injected; start the motor 1, and the rotating shaft of the motor 1 drives the transmission shaft 1 1 rotates, driving the connecting piece 12, the slurry barrel 5, the pressing piece 4, the feeding pipe 9, the scraper mounting piece 13 and the scraper 14 to rotate synchronously. Since the rotation speed is not fast, the following rotation of each component is very stable under the premise that the motor 1 is stably installed and the scraper mounting piece 13 is stably installed through the bearing 16. The scraper 14 rotates to evenly disperse the slurry on the filter screen 15, and the small particles of slurry that meet the requirements fall into the receiving container 20, and the large particles of slurry that do not meet the requirements cannot pass through the filter screen 15. After a period of time, the staff can observe the filtering situation through the gap 134. After finding that there are many large particles of slurry remaining on the filter screen 15, the filtering operation is suspended, the filter screen 15 is removed, and a new filter screen 15 is replaced, or the filter screen 15 is quickly cleaned and then reinstalled on the filter screen mounting piece 18, and then the filtering operation is continued.

[0046] The above embodiments are only preferred embodiments of the present invention and are not limitations of the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A silver paste filtering device for a conductive plastic potentiometer resistor, comprising a motor, a transmission shaft, a scraper mounting member, a scraper, a filter mounting member and a filter, wherein the upper end of the vertical transmission shaft is connected to the rotating shaft of the motor, the upper end of the scraper mounting member is connected to the lower end of the transmission shaft, the scraper is mounted on the lower end of the scraper mounting member, the filter is mounted on the filter mounting member and is located below the scraper, and is characterized in that: The slurry barrel is provided with a discharge pipe, one end of the discharge pipe is connected to the discharge pipe, and the other end of the discharge pipe is placed above the filter screen; the first end of the connecting piece is provided with a vertical connection hole, and the lower end of the transmission shaft and the scraper are connected to the slurry barrel. The upper ends of the plate mounting parts are respectively placed in the connecting holes and fixed by screws, a sunken connecting part groove is provided on the second end of the connecting part, a vertical connecting part through hole is provided at the center position of the connecting part groove, the lower end of the slurry barrel is placed in the connecting part groove and the discharge pipe passes through the connecting part through hole; a horizontal mounting plate is provided at the lower part of the scraper mounting part, a downwardly protruding mounting boss is provided under the mounting plate, the outer diameter of the mounting boss is smaller than the outer diameter of the mounting plate, a vertical material pipe through hole is provided on the mounting plate and the mounting boss for the material delivery pipe to pass through, the A scraper mounting groove is provided in the middle of the lower end of the scraper mounting piece, and the scraper is placed in the scraper mounting groove and fixed by screws; a sunken mounting piece sinking groove is provided in the transverse middle of the filter screen mounting piece, and a vertical filter hole is provided at the center position of the mounting piece sinking groove, and the filter screen is installed on the bottom hole wall of the filter hole and covers the filter hole completely, and a bearing is installed in the mounting piece sinking groove, and the outer wall of the outer ring of the bearing contacts with the groove wall of the mounting piece sinking groove, and the inner ring of the bearing is sleeved outside the mounting boss; a transition pipe with a diameter larger than that of the discharge pipe is provided at the lower end of the slurry barrel, and the upper end of the discharge pipe is in contact with the The lower end of the transition pipe is connected; the bearing is a rolling bearing, the edge of the mounting plate presses the inner ring of the bearing from top to bottom, a pressure plate is installed on the filter mounting piece, the pressure plate presses the outer ring of the bearing from top to bottom, the mounting plate and the mounting boss are located at the position around the scraper mounting groove for observing the notch of the filter, the filter is a wire mesh and is glued and installed on the filter mounting piece, the filter mounting piece is connected to the base located below the filter mounting piece through a plurality of columns, a sunken base sink is provided at the center of the base, a material receiving container is placed in the base sink.

2. The silver paste filtering device for conductive plastic potentiometer resistor according to claim 1, characterized in that: The hole wall of the connecting hole, the lower end outer wall of the transmission shaft and the upper end outer wall of the scraper mounting member are respectively provided with a vertical plane, and the plane on the lower end outer wall of the transmission shaft and the plane on the upper end outer wall of the scraper mounting member are respectively in contact with the plane on the hole wall of the connecting hole.

3. The silver paste filtering device for conductive plastic potentiometer resistor according to claim 1, characterized in that: The transverse middle section of the connecting piece is also provided with a mounting hole, the lower end of the vertical fixing rod is connected to the connecting piece through the mounting hole, the upper end of the fixing rod is connected to the transverse fixing ring, and the fixing ring is sleeved outside the slurry cylinder through its own vertical through hole.

4. The silver paste filtering device for conductive plastic potentiometer resistor according to any one of claims 1 to 3, characterized in that: The pressing piece is a vertical column, and the upper end of the pressing piece is provided with a gripping portion for easy holding by hand, and the lower end of the pressing piece is provided with a sleeve portion for easy installation of a sealing member, and a vertical fully sealed silicone seal is sleeved on the sleeve portion, and the silicone seal is in close contact with the inner wall of the slurry cylinder but can slide up and down.

5. The silver paste filtering device for conductive plastic potentiometer resistor according to any one of claims 1 to 3, characterized in that: The slurry cylinder is a silicone cylinder, and the feed pipe is a silicone hose and is fixedly mounted on the scraper mounting piece through a fixing piece.

6. The silver paste filtering device for conductive plastic potentiometer resistor according to any one of claims 1 to 3, characterized in that: The scraper is a rectangular silicone plate, and an angle of 5-30° is formed between the scraper and the vertical. The lowermost edge of the scraper is close to or in contact with the filter screen. The motor is installed on a fixed base through a motor mounting member. A vertical transmission shaft blind hole is provided at the upper end of the transmission shaft. The rotating shaft of the motor is located in the transmission shaft blind hole and is fixed by screws. The rotating shaft of the motor, the transmission shaft and the upper end of the scraper mounting member are coaxial and the axis passes through the midpoint of the lowermost edge of the scraper.

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