Feeding device for preparing nano-silver paste

Abstract

The feeding device comprises a mixing barrel, a rotating rod, an annular groove and a cleaning sleeve, four discharging openings are formed in the top end of the mixing barrel in a circumferential array mode, the annular groove is formed in the inner top end of the mixing barrel, and a rotating disc is rotationally connected to the center of the inner top end of the mixing barrel; four connecting rods are fixedly connected to the outer side wall of the rotating disc in a circumferential array mode, cylindrical blocks are fixedly connected to the other ends of the connecting rods, the cylindrical blocks are located on the inner side of the annular groove, and the outer surfaces of the cylindrical blocks are movably sleeved with cleaning sleeves; a rotating rod is fixedly connected to the center of the bottom of the rotating disc, a plurality of dredging scraping plates are fixedly connected to the bottom of the side wall of the rotating rod in a circumferential array mode, and the outer ends of the dredging scraping plates are attached to the inner wall of a discharging opening formed in the bottom of the mixing barrel; by arranging the annular groove, the cylindrical block rotating in the annular groove and the cleaning sleeve, raw materials possibly blocking the discharging opening are cleaned, and therefore normal discharging and mixing are guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of nano-silver paste preparation, in particular to a feeding device for preparing nano-silver paste. BACKGROUND

[0002] Nano-silver paste is a material in which high-concentration silver nanoparticles are uniformly dispersed in a solvent, and is widely used in the electronic field, including processes for printed circuit boards, electronic components, flat panel displays and the like. Its low-temperature sintering characteristics allow the influence of thermal stress on materials to be reduced during the manufacturing process, while improving production efficiency; the production process of nano-silver paste usually includes uniformly dispersing silver nanoparticles in a solvent, and adding some organic solvents and high-molecular polymers to adjust its viscosity and fluidity.

[0003] Patent No. CN 220803123 U discloses a feeding device for preparing nano-silver paste, which comprises a plurality of storage hoppers, an electric control valve and a microwave solid flow meter are arranged in the feeding pipe, which can distinguish different raw materials for preparing nano-silver paste, and can accurately monitor the feeding according to the proportioning requirements of the raw materials for preparing nano-silver paste, and the feeding device main body with an electric control vibrating plate is arranged to facilitate the collection of different raw materials to the feeding pipe, and the feeding pipe with an impeller is arranged to prevent blockage and uniformly supply the nano-silver paste, which has the advantages of simple structure, multi-cavity storage, controlled amount of discharge, accurate monitoring of different component raw materials according to the proportioning requirements, anti-blocking uniform discharge structure, and efficient automatic controlled amount of precise anti-blocking feeding.

[0004] However, in use, the following defects exist:

[0005] Although multiple storage hoppers are used to store different raw materials for easy discharge, the discharge port of each storage container is not cleaned during discharge, which may cause the raw material to be blocked and unable to discharge, thereby affecting the efficiency of the discharge. CONTENT OF THE INVENTION

[0006] The application aims to provide a feeding device for preparing nano-silver paste, which solves the problem of not cleaning the discharge port of each storage container, which may cause the raw material to be blocked and unable to discharge, thereby affecting the efficiency of the discharge.

[0007] In order to achieve the above object, the application provides the following technical scheme: a feeding device for preparing nano-silver paste, comprising a mixing cylinder, a rotating rod, an annular groove and a cleaning sleeve, four discharge ports are arranged in a circumferential array at the top end of the mixing cylinder, and an annular groove is arranged at the inner top end of the mixing cylinder, a rotating disc is rotatably connected to the central part of the inner top end of the mixing cylinder, four connecting rods are fixedly connected to the outer side wall of the rotating disc in a circumferential array, a cylindrical block is fixedly connected to the other end of the connecting rod, and the cylindrical block is located on the inner side of the annular groove, and a cleaning sleeve is movably sleeved on the outer surface of the cylindrical block; the bottom center of the rotating disc is fixedly connected with a rotating rod, and a plurality of dredging scrapers are fixedly connected to the bottom side wall of the rotating rod in a circumferential array, and the outer end of the dredging scraper is attached to the inner wall of the discharge port arranged at the bottom of the mixing cylinder.

[0008] In this technical scheme, the servo motor is started to rotate the rotating disc, so that the connecting rod and the cylindrical block rotate together, the cylindrical block is located on the inner side of the annular groove, and the cleaning sleeve on the surface thereof can clean the annular groove and the discharge port during rotation, so as to dredge the blocked raw materials, ensure normal feeding, and improve the practicability of the device; during the cleaning process of the discharge port, the dredging scraper at the bottom of the rotating rod also rotates under the driving of the rotating rod, which can not only avoid the original blockage, but also can scrape the inner wall of the discharge port clean and keep it smooth, so as to facilitate the discharge, cooperate with the upper cleaning sleeve, and thus maximize the normal discharge of the device and improve the discharge efficiency of the device

[0009] Preferably, a servo motor is fixedly connected to the central part of the top end of the mixing cylinder, and the driving shaft of the servo motor is fixedly connected to the rotating disc.

[0010] Preferably, a stirring rod is fixedly connected to the upper outer surface of the rotating rod, and four dispersing plates are fixedly connected to the side wall of the rotating rod below the stirring rod in a circumferential array.

[0011] Preferably, the width of the annular groove is smaller than the diameter of the discharge port, and the annular groove is in communication with the discharge port.

[0012] Preferably, the outer surface of the cleaning sleeve is attached to the inner wall of the annular groove and the discharge port.

[0013] Preferably, an observation window is arranged on the side wall of the mixing cylinder.

[0014] Compared with the prior art, the application has the following beneficial effects:

[0015] 1. The application can clean the discharge port through the rotating disc, connecting rod, annular groove, cylindrical block and cleaning sleeve. The servo motor drives the rotating disc to rotate after starting, so that the connecting rod and the cylindrical block rotate together. The cylindrical block is located on the inner side of the annular groove. The cleaning sleeve on the surface of the cylindrical block can clean the annular groove and the discharge port during rotation, so as to unblock the blocked raw materials and ensure normal feeding and improve the practicability of the device.

[0016] 2. The application can unblock the discharge port through the rotating rod and unblocking scraper. During the cleaning process of the discharge port, the unblocking scraper at the bottom of the rotating rod also rotates under the drive of the rotating rod. During rotation, not only can the original blockage be avoided, but also the inner wall of the discharge port can be scraped clean to maintain smoothness, thereby facilitating discharge. In combination with the upper cleaning sleeve, the normal discharge of the device is maximized, and the discharge efficiency of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the accompanying drawings:

[0018] Figure 1 It is a whole view of the feeding device for preparing nano-silver paste of the application;

[0019] Figure 2 It is a cross-sectional structure schematic view of the feeding device for preparing nano-silver paste of the application;

[0020] Figure 3 It is a structure schematic view of the top end of the mixing cylinder of the feeding device for preparing nano-silver paste of the application.

[0021] In the figure: 1, mixing cylinder; 101, discharge port; 2, observation window; 3, servo motor; 4, rotating disc; 5, rotating rod; 6, stirring rod; 7, dispersion plate; 8, unblocking scraper; 9, discharge port; 10, microwave solid flowmeter; 11, electric control valve; 12, storage bin; 13, annular groove; 14, connecting rod; 15, cylindrical block; 16, cleaning sleeve. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the following further elaborates in combination with specific embodiments.

[0023] A feeding device for preparing nano-silver paste, see Figures 1 to 3, including the mixing cylinder 1, the rotating rod 5, the annular groove 13 and the cleaning sleeve 16, the top end of the mixing cylinder 1 is provided with four discharge ports 9 in a circumferential array, and the inner top end of the mixing cylinder 1 is provided with the annular groove 13, the central rotating rod 5 of the inner top end of the mixing cylinder 1 is rotatably connected with the rotating disc 4, the outer side wall of the rotating disc 4 is fixedly connected with four connecting rods 14 in a circumferential array, the other end of the connecting rod 14 is fixedly connected with the cylindrical block 15, and the cylindrical block 15 is located on the inner side of the annular groove 13, the outer surface of the cylindrical block 15 movably sleeves the cleaning sleeve 16, and the cleaning sleeve 16 on the surface thereof will clean the annular groove 13 and the discharge port 9 during rotation, so as to unblock the blocked raw materials and ensure normal discharging; the bottom center of the rotating disc 4 is fixedly connected with the rotating rod 5, the side wall bottom of the rotating rod 5 is fixedly connected with a plurality of unblocking scrapers 8 in a circumferential array, and the outer end of the unblocking scraper 8 is attached to the inner wall of the discharge port 101 provided at the bottom of the mixing cylinder 1, the unblocking scraper 8 rotates under the driving of the rotating rod 5, and during rotation, not only can the original blockage be avoided, but also the inner wall of the discharge port 101 can be scraped clean, keeping smooth, so as to facilitate discharging and improve the discharging efficiency of the device.

[0024] Specifically, as shown in Figure 1 and Figure 2 , the top center of the mixing cylinder 1 is fixedly connected with the servo motor 3, the outer end of the transmission shaft of the servo motor 3 is fixedly connected with the rotating disc 4, and the servo motor 3 drives the rotating disc 4 to rotate after starting, so that the connecting rod 14, the stirring rod 6, the dispersing plate 7 and the unblocking scraper 8 rotate together.

[0025] It is worth noting that, as shown in Figure 2 , the upper outer surface of the rotating rod 5 is fixedly connected with the stirring rod 6, and the side wall of the rotating rod 5 below the stirring rod 6 is fixedly connected with four dispersing plates 7 in a circumferential array, which can scatter the raw materials about to be discharged, so as to reduce the accumulation during discharging and maximize the avoidance of blockage.

[0026] It is worth noting that, as shown in Figure 3 , the width of the annular groove 13 is less than the diameter of the discharge port 9, and the annular groove 13 communicates with the discharge port 9, so that the cylindrical block 15 and the cleaning sleeve 16 can pass through in the communication state.

[0027] It is worth noting that, as shown in Figure 3 , the outer surface of the cleaning sleeve 16 is attached to the inner wall of the annular groove 13 and the discharge port 9, and the cleaning sleeve 16 is in a compressed state in the annular groove 13, and when it enters the discharge port 9, it will spread out, so as to be attached to the inner wall of the discharge port 9, so as to clean the inner walls of the annular groove 13 and the discharge port 9 during rotation.

[0028] It is worth noting that, as shown in Figure 1As shown, the side wall of the mixing cylinder 1 is provided with an observation window 2, which can clearly view the material discharge condition in the mixing cylinder 1, so as to carry out the next batch of discharging mixing.

[0029] In actual use, the raw materials in the storage bin 12 complete the discharging operation through the control of the electric control valve 11, and the specific amount of discharging is known under the measurement of the microwave solid flowmeter 10, and in the process of discharging, the discharging port 9 may be blocked, at this time, through the rotating disc 4, the connecting rod 14, the annular groove 13, the cylindrical block 15 and the cleaning sleeve 16, the discharging port 9 can be cleaned, the servo motor 3 drives the rotating disc 4 to rotate after starting, the connecting rod 14 and the cylindrical block 15 rotate together, the cylindrical block 15 is located on the inner side of the annular groove 13, and the cleaning sleeve 16 on the surface of the cylindrical block 15 can clean the annular groove 13 and the discharging port 9 in the process of rotating, so as to dredge the blocked raw materials, ensure the normal discharging, improve the practicability of the device, and through the rotating rod 5 and the dredging scraper 8, the discharging port 101 can be dredged, the dredging scraper 8 at the bottom of the rotating rod 5 also rotates under the driving of the rotating rod 5 in the cleaning process of the discharging port 9, and in the process of rotating, not only the original blockage can be avoided, but also the inner wall of the discharging port 101 can be scraped clean, so that the discharging is more convenient, and the cleaning sleeve 16 above is combined, so that the normal discharging of the device is maximally guaranteed, and the discharging efficiency of the device is improved.

[0030] In addition, the components designed in the utility model are general standard components or components known by those skilled in the art, the structure and principle of which can be known by the technical personnel through a technical manual or through a conventional experimental method, and the technical personnel in the art can completely realize it without further description, and the content protected by the utility model does not involve improvement of the internal structure and method.

[0031] The embodiments of the utility model disclose the preferable embodiments, but are not limited to this, and the ordinary skilled in the art can easily understand the spirit of the utility model according to the above-mentioned embodiments, and make different inferences and changes, but as long as it does not deviate from the spirit of the utility model, it is within the protection scope of the utility model.

Claims

1. A feeding device for preparing nano-silver paste, comprising a mixing cylinder (1), a rotating rod (5), an annular groove (13) and a cleaning sleeve (16), characterized in that: The top end of the mixing cylinder (1) is provided with four discharge ports (9) in a circumferential array, and the inner top end of the mixing cylinder (1) is provided with an annular groove (13), the inner top end of the mixing cylinder (1) is rotationally connected with a rotating disc (4), the outer side wall of the rotating disc (4) is fixedly connected with four connecting rods (14) in a circumferential array, the other end of the connecting rod (14) is fixedly connected with a cylindrical block (15), and the cylindrical block (15) is located on the inner side of the annular groove (13), and the outer surface of the cylindrical block (15) is movably sleeved with a cleaning sleeve (16); the bottom center of the rotating disc (4) is fixedly connected with a rotating rod (5), the bottom side wall of the rotating rod (5) is fixedly connected with a plurality of dredging scrapers (8) in a circumferential array, and the outer end of the dredging scraper (8) is attached to the inner wall of the discharge port (101) provided at the bottom of the mixing cylinder (1).

2. The feeding device for preparing nano-silver paste according to claim 1, characterized in that: The top center of the mixing cylinder (1) is fixedly connected with a servo motor (3), and the outer end of the transmission shaft of the servo motor (3) is fixedly connected with the rotating disc (4).

3. The feeding device for preparing nano-silver paste according to claim 1, characterized in that: The upper outer surface of the rotating rod (5) is fixedly connected with a stirring rod (6), and the side wall of the rotating rod (5) below the stirring rod (6) is fixedly connected with four dispersion plates (7) in a circumferential array.

4. The feeding device for preparing nano-silver paste according to claim 1, characterized in that: The width of the annular groove (13) is less than the diameter of the discharge port (9), and the annular groove (13) communicates with the discharge port (9).

5. The feeding device for preparing nano-silver paste according to claim 1, characterized in that: The outer surface of the cleaning sleeve (16) is attached to the inner wall of the annular groove (13) and the discharge port (9).

6. The feeding device for preparing nano-silver paste according to claim 1, characterized in that: The side wall of the mixing cylinder (1) is provided with an observation window (2). The side wall of the mixing cylinder (1) is provided with an observation window (2).

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