Automatic solid feeding device

Abstract

The invention discloses an automatic solid feeding device which comprises a charging barrel, a feeding screw located in the charging barrel, a feeding motor located outside the charging barrel, a conical stock bin located above the charging barrel, a stirring paddle located in the conical stock bin and a stirring motor located outside the conical stock bin. The stirring motor is connected with the stirring paddle and drives the stirring paddle to rotate; the charging barrel is provided with an inlet end which is butted and communicated with the discharge hole of the conical stock bin, an outlet end which is positioned right below the inlet end and a transverse end which is transversely arranged between the inlet end and the outlet end; the feeding screw is exposed out of the transverse end and is connected with the feeding motor; the stirring paddle comprises a central body, an inclined scraping plate which is positioned outside the central body and is parallel to the side wall of the conical stock bin, a connecting bracket which is connected between the central body and the inclined scraping plate, and a spiral scraping plate which is positioned under the central body; the distance between the inclined scraping plate and the side wall of the conical stock bin ranges from 2mm to 6mm; therefore, the materials are effectively prevented from caking and blocking the material port.

Description

Technical Field

[0001] The invention relates to the technical field of chemical industry, medicine and polymer processing, and in particular to an automatic solid feeding device used in chemical industry, medicine and polymer processing. Background Art

[0002] In the chemical, pharmaceutical, and polymer processing industries, a product is often composed of a mixture of multiple raw materials. In the process of product production, there are clear regulations on the type, weight, mixing process, and mixing time limit of each raw material or substitute. A small mistake in the production step will result in the scrapping of the entire batch of products. Therefore, the automatic feeding device plays a very important role in the product processing process.

[0003] At present, in the existing automatic feeding devices for feeding solid materials, there are defects that the solid materials aggregate into blocks and the discharge port is blocked due to the aggregation, which accordingly affects the material feeding speed and efficiency and affects the overall production efficiency.

[0004] Therefore, there is an urgent need for an automatic solid feeding device to overcome one or more of the above-mentioned defects. Summary of the invention

[0005] The object of the present invention is to provide a solid automatic feeding device which can prevent materials from agglomerating and blocking a feed port.

[0006] To achieve the above-mentioned purpose, the solid automatic feeding device of the present invention comprises a barrel, a feeding screw located in the barrel, a feeding motor located outside the barrel, a conical silo located above the barrel, a stirring paddle located in the conical silo, and a stirring motor located outside the conical silo. The stirring motor is connected to the stirring paddle and drives the stirring paddle to rotate. The barrel has an inlet end connected to the discharge port of the conical silo, an outlet end located directly below the inlet end, and a transverse end disposed horizontally between the inlet end and the outlet end. The feeding screw is exposed from the transverse end and connected to the feeding motor. The stirring paddle comprises a central body, an inclined scraper located outside the central body and arranged parallel to the side wall of the conical silo, a connecting bracket connected between the central body and the inclined scraper, and a spiral scraper located directly below the central body. The spacing between the inclined scraper and the side wall of the conical silo ranges from 2 mm to 6 mm.

[0007] Compared with the prior art, with the design of "an inclined scraper located outside the central body and arranged parallel to the side wall of the conical bin, and the distance between the inclined scraper and the side wall of the conical bin ranges from 2 mm to 6 mm", the inclined scraper scrapes the materials adhering to the inner wall of the conical bin, effectively preventing the materials from adhering to the inner wall of the conical bin, thus preventing the materials from caking and blocking the material outlet due to caking of the materials; at the same time, in cooperation with the spiral scraper located directly below the central body, the spiral scraper generates a downward thrust during rotation, so that the stirring paddle can also convey the solid materials downward, improving the speed at which the solid materials flow into the barrel.

[0008] Preferably, the lower end of the inclined scraper protrudes downward relative to the central body, the spiral scraper protrudes downward relative to the inclined scraper, and the lower end of the spiral scraper also extends along the axial direction of the central body.

[0009] Preferably, a plurality of the inclined scrapers are arranged at intervals around the central body, and the connecting bracket is arranged horizontally.

[0010] Preferably, the distance between the inclined scraper and the side wall of the conical bin ranges from 3 mm to 5 mm.

[0011] Preferably, the central body includes a central shaft and a mounting sleeve fixedly sleeved on the central shaft, the connecting bracket is connected to the mounting sleeve, the spiral scraper is fixedly connected to the central shaft and / or the mounting sleeve, and the central shaft protrudes upward from the conical bin and is connected to the stirring motor.

[0012] Preferably, the stirring motor is located directly above the central shaft, and a stirring speed reducer located outside the conical bin is provided between the stirring motor and the central shaft.

[0013] Preferably, the solid automatic feeding device of the present invention further includes an automatic butterfly valve, and the automatic butterfly valve is assembled and connected to the outlet end of the barrel through a flange.

[0014] Preferably, the discharge port of the conical bin and the inlet end of the barrel are assembled and connected by means of a mating flange assembly.

[0015] Preferably, a feeding speed reducer located outside the barrel is provided between the feeding motor and the feeding screw.

[0016] Preferably, both the feeding motor and the stirring motor are speed control motors whose speeds are controlled by a frequency converter. Description of the Drawings

[0017] Figure 1 is a plan view of the solid automatic feeding device of the present invention.

[0018] Figure 2 yes Figure 1 The plan view behind the hidden barrel, feed screw, feed motor, feed reducer and automatic butterfly valve.

[0019] Figure 3 It is a plan view of the stirring paddle in the automatic solid feeding device of the present invention viewed from bottom to top.

[0020] Figure 4 yes Figure 1 The plan view after the conical silo, stirring paddle, stirring motor and stirring reducer are hidden.

[0021] Figure 5 Yes Figure 3 The stirring paddle is shown in a plan view in a deformation.

[0022] Figure 6 Yes Figure 3 The stirring paddle is shown in a plan view in another modification. DETAILED DESCRIPTION

[0023] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the implementation modes and the accompanying drawings.

[0024] See also Figure 1 The automatic solid feeding device 100 of the present invention includes a barrel 10, a feeding screw 20 located in the barrel 10, a feeding motor 30 located outside the barrel 10, a conical silo 40 located above the barrel 10, a stirring paddle 50 located in the conical silo 40, and a stirring motor 60 located outside the conical silo 40. The stirring motor 60 is connected to the stirring paddle 50 to meet the need of the stirring motor 60 to drive the stirring paddle 50 to rotate. Optionally, as an example, the stirring motor 60 is a speed-regulating motor whose speed is controlled by a frequency converter, so the speed at which the stirring motor 60 drives the stirring paddle 50 to rotate can be flexibly adjusted according to actual working conditions, thereby preparing for precise feeding; obviously, according to actual needs, the stirring motor 60 can also be selected as a servo motor.

[0025] At the same time, the barrel 10 has an inlet end 11 connected to the discharge port 41 of the conical silo 40, an outlet end 12 located directly below the inlet end 11, and a transverse end 13 disposed transversely between the inlet end 11 and the outlet end 12. Figure 1 As an example, the discharge port 41 of the conical silo 40 and the inlet end 11 of the barrel 10 are assembled and connected by means of a matching flange assembly 80. This design improves the convenience of assembly and disassembly between the conical silo 40 and the barrel 10. Obviously, according to actual needs, the discharge port 41 of the conical silo 40 and the inlet end 11 of the barrel 10 can also be assembled and connected by welding or other methods, so it is not necessary to use the above method. Figure 1 Limits shown.

[0026] Furthermore, the feeding screw 20 protrudes from the horizontal end 13 and is connected to the feeding motor 30 to meet the need for the feeding motor 30 to drive the feeding screw 20 to rotate. Optionally, as an example, the feeding motor 30 is a speed-regulating motor whose speed is controlled by a frequency converter. Therefore, the speed at which the feeding motor 30 drives the feeding screw 20 to rotate can be flexibly adjusted according to the actual working conditions, so that more accurate feeding can be achieved. Obviously, according to actual needs, the feeding motor 30 can also be selected as a servo motor.

[0027] Among them, the stirring paddle 50 includes a central body 51, an inclined scraper 52 located outside the central body 51 and arranged parallel to the side wall 42 of the conical bin 40, a connecting bracket 53 connecting the central body 51 and the inclined scraper 52, and a spiral scraper 54 located directly below the central body 51. Optionally, in Figure 1 and Figure 2 as an example, the spiral scraper 54 also extends along the axial direction of the central body 51 (such as the up and down direction in Figure 1 and Figure 2 ), so that a downward axial thrust is generated during the rotation of the spiral scraper 54, thereby more reliably pushing the stirred material towards the barrel 10. Combined with the gravity of the material itself, it is easier and smoother for the material to flow into the barrel 10. The distance D between the inclined scraper 52 and the side wall 42 of the conical bin 40 ranges from 2 mm to 6 mm. Optionally, as an example, the distance D between the inclined scraper 52 and the side wall 42 of the conical bin 40 ranges from 3 mm to 5 mm to more effectively scrape off the material adhering to the inner wall of the conical bin 40 and more effectively prevent the material from caking. More specifically, as follows:

[0028] As Figure 1 and Figure 2 shown, as an example, the lower end of the inclined scraper 52 protrudes downward relative to the central body 51, and the lower end of the spiral scraper 54 protrudes downward relative to the inclined scraper 52. Such a design makes the lower end of the inclined scraper 52 lower than the connection between the central body 51 and the spiral scraper 54 and the lower end of the spiral scraper 54 lower than the inclined scraper 52, so that the spiral scraper 54 can more reliably push the material stirred and scraped by the inclined scraper 52 downward. In addition, in Figure 3 as an example, there are two inclined scrapers 52 arranged separately around the central body 51. Obviously, according to actual needs, the inclined scraper 52 can also be Figure 5 shown as three arranged separately around the central body 51, or Figure 6 shown as four arranged separately around the central body 51. That is to say, the number of inclined scrapers 52 can be flexibly selected according to actual needs, so it is not limited to Figure 3 , Figure 5 and Figure 6Shown is limited. In addition, the connecting bracket 53 is arranged flat. Specifically, in Figure 1 and Figure 2 , as an example, the central body 51 includes a central shaft 511 and a mounting sleeve 512 fixedly sleeved on the central shaft 511. The connecting bracket 53 is connected to the mounting sleeve 512, such as by welding, for example but not limited to this. The spiral scraper 54 is fixedly connected to the central shaft 511. The central shaft 511 extends upward out of the conical bin 40 and is connected to the stirring motor 60, so as to meet the requirement that the stirring motor 60 directly drives the spiral scraper 54 to rotate through the central shaft 511. Obviously, according to actual requirements, the spiral scraper 54 can also be fixedly connected to the mounting sleeve 512, or the spiral scraper 54 can be fixedly connected to the mounting sleeve 512 and the central shaft 511 respectively. It should be noted that when there are a plurality of inclined scrapers 52 arranged at intervals around the central body 51, at this time the spiral scraper 54 is located in the space 55 (see Figure 2 ) surrounded by all the inclined scrapers 52, more effectively ensuring that the spiral scraper 54 evenly pushes the materials scraped and stirred by the inclined scrapers 52 downward.

[0029] As Figure 1 and Figure 2 shown, as an example, the stirring motor 60 is located directly above the central shaft 51 to simplify the assembly relationship between the stirring motor 60 and the central shaft 51. A stirring speed reducer 61 is provided between the stirring motor 60 and the central shaft 51 outside the conical bin 40, so as to provide a greater stirring force for the stirring paddle 50 with the help of the stirring speed reducer 61. In addition, a feeding speed reducer 31 is provided between the feeding motor 30 and the feeding screw 20 outside the barrel 10, so as to provide a greater feeding force for the feeding screw 20 with the help of the feeding speed reducer 31. It can be understood that when the stirring paddle 50 does not require a greater stirring force and the feeding screw 20 does not require a greater feeding force, the stirring speed reducer 61 is not added between the stirring motor 60 and the central shaft 51, and the feeding speed reducer 31 is not added between the feeding motor 30 and the feeding screw 20.

[0030] As Figure 1 and Figure 2 shown, as an example, the solid automatic feeding device 100 of the present invention further includes an automatic butterfly valve 70. The automatic butterfly valve 70 is assembled and connected to the outlet end 12 of the barrel 10 through a flange 71. On the one hand, it is convenient for the disassembly and assembly operation of the automatic butterfly valve 70 and the outlet end 12 of the barrel 10. On the other hand, it cooperates with the stirring motor 60 and the feeding motor 30 to achieve the purpose of automatic feeding.

[0031] Compared with the prior art, with the design of "the inclined scraper 52 located outside the central body 51 and arranged parallel to the side wall 42 of the conical bin 40, and the distance D between the inclined scraper 52 and the side wall 42 of the conical bin 40 ranges from 2 mm to 6 mm", the inclined scraper 52 scrapes away the materials adhering to the inner wall of the conical bin 52, effectively preventing the materials from adhering to the inner wall of the conical bin 40, thus preventing the materials from caking and blocking the material outlet due to material caking, such as the discharge port 41 of the conical bin 40, the inlet end 11 of the barrel 10, and the outlet end 12 of the barrel 10; at the same time, in cooperation with the spiral scraper 54 located directly below the central body 51, the spiral scraper 54 generates a downward thrust during rotation, so that the stirring paddle 50 can also convey solid materials downward, improving the speed of the solid materials flowing into the barrel 10.

[0032] It should be noted that since the solid automatic feeding device 100 of the present invention is in a corrosive working environment, correspondingly, the material of the solid automatic feeding device 100 can be selected as stainless steel but not limited thereto. Additionally, the feed port 43 of the conical bin 10 is preferably located at the upper end of the conical bin 10 and adjacent to the stirring motor 60.

[0033] The above-disclosed are only the preferred examples of the present invention and cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention all fall within the scope covered by the present invention.

Claims

1. A solid automatic feeding device, comprising a barrel, a feeding screw located in the barrel, a feeding motor located outside the barrel, a conical silo located above the barrel, a stirring paddle located in the conical silo and a stirring motor located outside the conical silo, the stirring motor being connected to the stirring paddle and driving the stirring paddle to rotate, the barrel having an inlet end connected to a discharge port of the conical silo, an outlet end located directly below the inlet end and a transverse end disposed transversely between the inlet end and the outlet end, the feeding screw being exposed from the transverse end and being connected to the feeding motor, characterized in that: The stirring paddle includes a central body, an inclined scraper located outside the central body and arranged parallel to the side wall of the conical silo, a connecting bracket connected between the central body and the inclined scraper, and a spiral scraper located directly below the central body, and the spacing between the inclined scraper and the side wall of the conical silo ranges from 2 mm to 6 mm.

2. The solid automatic feeding device according to claim 1, characterized in that: The lower end of the inclined scraper is arranged to protrude downward relative to the central body, the lower end of the spiral scraper is arranged to protrude downward relative to the inclined scraper, and the spiral scraper is also arranged to extend axially along the central body.

3. The automatic solid feeding device according to claim 1 or 2, characterized in that: The inclined scrapers are multiple and spaced apart from each other and arranged around the central body, and the connecting bracket is arranged to lie flat.

4. The solid automatic feeding device according to claim 1, characterized in that: The spacing between the inclined scraper and the side wall of the conical silo ranges from 3 mm to 5 mm.

5. The automatic solid feeding device according to claim 1, characterized in that: The central body includes a central axis and a mounting sleeve fixedly sleeved on the central axis, the connecting bracket is connected to the mounting sleeve, the spiral scraper is fixedly connected to the central axis and / or the mounting sleeve, and the central axis is exposed upward from the conical silo and is connected to the stirring motor.

6. The automatic solid feeding device according to claim 5, characterized in that: The stirring motor is located directly above the central axis, and a stirring reducer located outside the conical silo is provided between the stirring motor and the central axis.

7. The automatic solid feeding device according to claim 1, characterized in that: It also includes an automatic butterfly valve, which is assembled and connected to the outlet end of the barrel through a flange.

8. The automatic solid feeding device according to claim 1, characterized in that: The discharge port of the conical silo is assembled and connected with the inlet end of the barrel by means of a matching flange assembly.

9. The automatic solid feeding device according to claim 1, characterized in that: A feeding reducer located outside the barrel is provided between the feeding motor and the feeding screw.

10. The automatic solid feeding device according to claim 1, characterized in that: The feeding motor and the stirring motor are both speed-regulating motors whose rotation speeds are controlled by frequency converters.

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