Automatic feeding device for solid raw materials

Abstract

The utility model discloses an automatic solid raw material feeding device which comprises a first raw material tank, the bottom of the first raw material tank is connected with a first discharging pipe, the bottom of a second raw material tank is connected with a second discharging pipe, the second discharging pipe is communicated with the bottom of the first discharging pipe, the bottom of the first discharging pipe is communicated with a mixed material conveying pipe, and the bottom of the mixed material conveying pipe is communicated with a second discharging pipe. A spiral conveyor is arranged in the mixed material conveying pipe, a driving unit is arranged at the end part of the mixed material conveying pipe, the other end of the mixed material conveying pipe is communicated with a first feeding hole of the mixing tank, a third discharging pipe is arranged at the bottom of the third raw material tank, and the third discharging pipe is connected with a second feeding hole of the mixing tank. According to the automatic feeding device provided by the utility model, raw materials in the first raw material tank and the second raw material tank can be preliminarily mixed in the mixed material conveying pipe to form a mixed material, the mixed material is conveyed into the mixing tank from the first feeding hole, and meanwhile, solid raw materials in the third raw material tank are conveyed into the mixing tank through the third discharging pipe and the second feeding hole.

Description

Technical Field

[0001] This utility model relates to the field of powder coating production technology, and in particular to an automatic feeding device for solid raw materials. Background Technology

[0002] In the production process of powder coatings, various solid raw materials need to be added to a mixer in a certain proportion for mixing. Currently, the addition of solid raw materials is mostly done manually, with the solid raw materials weighed and poured into the mixer by hand. This method has many drawbacks. First, the accuracy of manual weighing and adding of raw materials is low, making it difficult to ensure that the proportion of raw materials added each time completely meets the formulation requirements, thus affecting the quality stability of the powder coating. Second, manual operation is inefficient, increasing production costs. Furthermore, during manual operation, operators are exposed to powdery raw materials for extended periods, which can easily lead to dust inhalation and pose a health hazard. Utility Model Content

[0003] The purpose of this invention is to provide an automatic feeding device for solid raw materials to address the aforementioned shortcomings in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An automatic feeding device for solid raw materials includes a mounting frame and further includes:

[0006] A first raw material tank, the bottom of which is provided with a first discharge port, and a first discharge pipe is connected to the first discharge port;

[0007] The second raw material tank, at least one second raw material tank, is provided with a second discharge port at the bottom of the second raw material tank, and a second discharge pipe is connected to the second discharge port, and the second discharge pipe is connected to the bottom of the first discharge pipe;

[0008] The mixing conveying pipe has a bottom connection to the first discharge pipe, a screw conveyor inside the mixing conveying pipe, a drive unit at the end of the mixing conveying pipe, the screw conveyor being connected to the drive unit, and the other end of the mixing conveying pipe being connected to the first inlet of the mixing tank.

[0009] The third raw material tank has a third discharge port at its bottom, and a third discharge pipe is provided on the third discharge port. The third discharge pipe is connected to the second inlet of the mixing tank.

[0010] The aforementioned automatic feeding device is equipped with control valves on the first discharge port, the second discharge port, and the third discharge port.

[0011] The aforementioned automatic feeding device is equipped with material metering components on the first raw material tank, the second raw material tank, and the third raw material tank.

[0012] The above-mentioned automatic feeding device includes a first discharge pipe comprising a connecting section and a mixing section, wherein the connecting section is connected to the first discharge port, and the second discharge pipe is connected to the mixing section;

[0013] In the aforementioned automatic feeding device, the mixing conveying pipe is inclined and includes an inlet end and an outlet end. The upper sidewall of the inlet end is connected to the first outlet pipe, and the driving unit is located at the end of the inlet end.

[0014] The aforementioned automatic feeding device has an integrated output pipe at the discharge end, which is installed vertically on the first feed inlet, and the screw conveyor extends into the interior of the output pipe.

[0015] In the aforementioned automatic feeding device, an output cavity is formed inside the output tube. The output cavity includes an upper chamber and a lower chamber, which are separated by an openable control panel.

[0016] In the above technical solution, the automatic feeding device for solid raw materials provided by this utility model includes a mounting frame, a first raw material tank, a second raw material tank, and a third raw material tank. A first discharge pipe is connected to the bottom of the first raw material tank, and a second discharge pipe is connected to the bottom of the second raw material tank. The second discharge pipe communicates with the bottom of the first discharge pipe, and the bottom of the first discharge pipe is connected to a mixing conveying pipe. A screw conveyor is installed inside the mixing conveying pipe. The third discharge pipe at the bottom of the third raw material tank is connected to the second inlet of the mixing tank. Thus, during use, the raw materials requiring preliminary mixing are... Do not place the raw materials in the first and second raw material tanks. Under the action of gravity, the solid raw materials in the first and second raw material tanks enter the mixing conveying pipe through the first and second discharge pipes, respectively. The rotation of the screw conveyor pushes the raw materials forward along the mixing conveying pipe. During the pushing process, the raw materials are gradually mixed to form a mixture. The mixture is conveyed from the first inlet to the mixing tank. At the same time, the solid raw materials in the third raw material tank are conveyed to the mixing tank through the third discharge pipe and the second inlet. The raw materials entering the mixing tank are fully stirred and mixed under the action of the stirring device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A front view of the automatic feeding device for solid raw materials provided in an embodiment of this utility model;

[0019] Figure 2 Left view of the automatic feeding device for solid raw materials provided in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the mixing and conveying pipe provided in an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the mixing and conveying pipe provided in an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Mounting frame; 2. First raw material tank; 21. First discharge port; 22. First discharge pipe; 3. Second raw material tank; 31. Second discharge port; 32. Second discharge pipe; 4. Mixing conveyor pipe; 41. Drive unit; 42. Screw conveyor; 43. Feed end; 44. Discharge end; 45. Output pipe; 46. Upper chamber; 47. Lower chamber; 48. Control board; 5. Third raw material tank; 51. Third discharge port; 52. Third discharge pipe; 6. Mixing tank. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-4 As shown, this utility model provides an automatic feeding device for solid raw materials, including a mounting frame 1, a first raw material tank 2, a second raw material tank 3, and a third raw material tank 5. The bottom of the first raw material tank 2 is provided with a first discharge port 21, and a first discharge pipe 22 is connected to the first discharge port 21. The bottom of the second raw material tank 3 is provided with a second discharge port 31, and a second discharge pipe 32 is connected to the second discharge port 31. The second discharge pipe 32 is connected to the bottom of the first discharge pipe 22, and the bottom of the first discharge pipe 22 is connected to a conveying pipe 4. A screw conveyor 42 is provided inside the conveying pipe 4, and a drive unit 41 is provided at the end of the conveying pipe 4. The screw conveyor 42 is connected to the drive unit 41, and the other end of the conveying pipe 4 is connected to the first inlet of a mixing tank 6. The bottom of the third raw material tank 5 is provided with a third discharge port 51, and a third discharge pipe 52 is provided on the third discharge port 51. The third discharge pipe 52 is connected to the second inlet of the mixing tank 6.

[0026] Specifically, the first raw material tank 2, the second raw material tank 3, and the third raw material tank 5 have the same structure and are set in different positions. The first raw material tank 2, the second raw material tank 3, and the third raw material tank 5 can be installed side by side on the mounting frame 1, or they can be set as needed. For example, the second raw material tank 3 can be set below the first raw material tank 2. The first raw material tank 2, the second raw material tank 3, and the third raw material tank 5 are used to store different raw materials. The first raw material tank 2 and the second raw material tank 3 are used to store raw materials that need to be pre-mixed, that is, they need to be pre-mixed before being transported to the mixing tank 6. There is one first raw material tank 2. The second raw material tank 3 can be set as needed, and there can be one, two, three, or more. The third raw material tank 5 is used to store raw materials that do not need to be pre-mixed. The top of the first raw material tank 2, the second raw material tank 3, and the third raw material tank 5 is provided with a feeding structure that can transport raw materials into the first raw material tank 2, the second raw material tank 3, and the third raw material tank 5.

[0027] In this embodiment, the bottom of the first raw material tank 2 is provided with a first discharge port 21, through which the raw materials in the first raw material tank 2 can be discharged. A first discharge pipe 22 is provided on the first discharge port 21, and the first discharge pipe 22 is installed in a vertical direction. The bottom of the second raw material tank 3 is provided with a second discharge port 31, through which the raw materials in the second raw material tank 3 can be discharged. A second discharge pipe 32 is connected to the second discharge port 31, and the bottom of the second discharge pipe 32 is connected to the first discharge pipe 22. Thus, the first discharge port 21 and the second discharge pipe 22 are connected in a vertical direction. The raw materials output from the second outlet 31 can be jointly conveyed to the bottom of the first outlet pipe 22, and then jointly conveyed into the conveying pipe 4. The conveying pipe 4 has a large diameter and is made of wear-resistant alloy steel. The conveying pipe 4 is located directly below the first outlet pipe 22. The conveying pipe 4 can be set horizontally or inclined. A screw conveyor 42 is installed inside the conveying pipe 4. The conveying pipe 4 is used to convey and mix raw materials. The screw conveyor 42 consists of screw blades and a central shaft. The screw blades are tightly wound on the central shaft. A drive unit 41 is provided at the end of the conveying pipe 4. The drive unit 41 can drive the screw conveyor so that the central shaft and screw blades can rotate inside the conveying pipe 4.

[0028] Under the influence of gravity, the solid raw materials in the first raw material tank 2 and the second raw material tank 3 enter the conveying pipe 4 through the first discharge pipe 22 and the second discharge pipe 32, respectively. Then, the drive unit 41 starts and drives the screw conveyor 42 to rotate. The rotation of the screw conveyor 42 pushes the raw materials forward along the conveying pipe 4. During the pushing process, the raw materials in the first raw material tank 2 and the second raw material tank 3 are gradually mixed. Due to the uniform pushing of the screw conveyor 42, the raw materials can be delivered to the first feed port of the mixing tank 6 at a stable flow rate.

[0029] In this embodiment, the bottom of the third raw material tank 5 is provided with a third discharge port 51, and the third discharge port 51 is provided with a third discharge pipe 52. The top of the mixing tank 6 is provided with a first feed port and a second feed port. The first feed port is connected to the other end of the conveying pipe 4, and the second feed port is connected to the third discharge pipe 52. The number of third raw material tanks 5 can be one, two or more. The mixing tank 6 is provided with a stirring device, which can fully stir the raw materials entering the mixing tank 6 to ensure uniform mixing. The third discharge pipe 52 is connected to the second feed port of the mixing tank 6.

[0030] The automatic feeding device for solid raw materials provided by this utility model includes a mounting frame 1, a first raw material tank 2, a second raw material tank 3, and a third raw material tank 5. The bottom of the first raw material tank 2 is connected to a first discharge pipe 22, and the bottom of the second raw material tank 3 is connected to a second discharge pipe 32. The second discharge pipe 32 communicates with the bottom of the first discharge pipe 22, and the bottom of the first discharge pipe 22 is connected to a conveying pipe 4. A screw conveyor 42 is installed inside the conveying pipe 4. The third discharge pipe 52 at the bottom of the third raw material tank 5 is connected to the second inlet of a mixing tank 6. Thus, in use, the raw materials requiring preliminary mixing are placed into the tank separately... The solid raw materials in the first raw material tank 2 and the second raw material tank 3 are placed in the first raw material tank 2 and the second raw material tank 3. Under the action of gravity, the solid raw materials in the first raw material tank 2 and the second raw material tank 3 enter the conveying pipe 4 through the first discharge pipe 22 and the second discharge pipe 32, respectively. The rotation of the screw conveyor 42 pushes the raw materials forward along the conveying pipe 4. During the pushing process, the raw materials are gradually mixed to form a mixture. The mixture is conveyed from the first inlet to the mixing tank 6. At the same time, the solid raw materials in the third raw material tank 5 are conveyed to the mixing tank 6 through the third discharge pipe 52 and the second inlet. The raw materials entering the mixing tank 6 are fully stirred and mixed under the action of the stirring device.

[0031] In this embodiment, preferably, control valves are provided on the first discharge port 21, the second discharge port 31, and the third discharge port 51. These control valves open or close the first discharge port 21, the second discharge port 31, and the third discharge port 51. Material metering devices are provided on the first raw material tank 2, the second raw material tank 3, and the third raw material tank 5. These material metering devices can be weighing sensors, installed at the connection between the bottom of the first raw material tank 2, the second raw material tank 3, and the third raw material tank 5 and the mounting frame 1. Each weighing sensor is equipped with a signal amplifier and an analog-to-digital converter, capable of converting the weight signal of the raw material tank and its internal materials into a digital signal in real time and transmitting it to the control system. When the material in the raw material tank decreases, the weighing sensor detects the weight change and feeds the data back to the control system. The control system then adjusts the subsequent feeding operation in a timely manner according to the preset feeding amount and ratio.

[0032] In this embodiment, preferably, the first discharge pipe 22 includes a connecting section and a mixing section. The connecting section is connected to the first discharge port 21, and the second discharge pipe 32 is connected to the mixing section. The connecting section is vertical and has a cylindrical pipe structure. Its pipe diameter is completely matched with the first discharge port 21. The pipe diameter of the mixing section is larger than that of the connecting section, providing more space for the feeding and initial mixing of the two raw materials.

[0033] In this embodiment, preferably, the material conveying pipe 4 is inclined and includes an inlet end 43 and an outlet end 44. The upper side wall of the inlet end 43 is connected to the first outlet pipe 22. The drive unit 41 is disposed at the end of the inlet end 43. The outlet end 44 is integrally provided with an output pipe 45. The output pipe 45 is installed vertically on the first inlet. The screw conveyor 42 extends into the interior of the output pipe 45.

[0034] The upper side wall of the feed end 43 is provided with a connection port that matches the first discharge pipe 22. A drive unit 41 is installed at the end of the feed end 43. The drive unit 41 adopts a high-precision servo motor. The output pipe 45 is a cylindrical structure that extends vertically. The screw conveyor 42 extends from the inside of the conveying pipe 4 to the inside of the output pipe 45, ensuring that the raw material can be pushed from the conveying pipe 4 to the output pipe 45.

[0035] When the device is started, two or more raw materials input through the first discharge pipe 22 enter the conveying pipe 4 through the connection port on the upper side wall of the feed end 43. The drive unit 41 drives the central shaft of the screw conveyor 42 to rotate, and the rotation of the screw blades continuously stirs the raw materials, so that the different kinds of raw materials are further mixed evenly during the conveying process. As the screw conveyor 42 continues to operate, the evenly mixed raw materials are conveyed to the output pipe 45 of the discharge end 44, and finally enter the first feed port of the mixing tank 6 through the output pipe 45, completing the mixing and conveying process in the conveying pipe 4.

[0036] In this embodiment, preferably, an output cavity is formed inside the output pipe 45. The output cavity includes an upper chamber 46 and a lower chamber 47. The upper chamber 46 and the lower chamber 47 are separated by an openable control plate 48. A discharge plate is provided at the bottom of the lower chamber 47, and a metering device is provided on the discharge plate. The metering device in the lower chamber 47 can measure the mixed raw materials, thereby realizing the quantitative addition of raw materials.

[0037] In the initial state of use, the unloading plate closes the bottom outlet of the lower chamber 47, and the control plate 48 is in the open state. The lower chamber 47 is connected to the upper chamber 46. The mixed raw materials are transported into the lower chamber 47, and the unloading plate measures and weighs the mixed raw materials. When the mixed raw materials in the lower chamber 47 reach the preset weight, the control plate 48 closes, and the mixed raw materials are then transported into the upper chamber 46. At the same time, the unloading plate opens the bottom outlet of the lower chamber 47, allowing the mixed raw materials to be transported into the mixing tank 6. After the mixed raw materials in the lower chamber 47 are completely transported, the unloading plate closes the bottom outlet of the lower chamber 47 again, and the control plate 48 is in the open state. The lower chamber 47 is connected to the upper chamber 46, and the mixed raw materials continue to be transported into the lower chamber 47. When the mixed raw materials in the lower chamber 47 reach the preset weight, the control plate 48 closes. This cycle repeats, achieving quantitative addition of the mixed material to the mixing tank 6 and realizing the quantitative and uniform addition of solid raw materials in multiple batches.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic feeding device for solid raw materials, comprising a mounting frame, characterized in that, Also includes: A first raw material tank, the bottom of which is provided with a first discharge port, and a first discharge pipe is connected to the first discharge port; The second raw material tank, at least one second raw material tank, is provided with a second discharge port at the bottom of the second raw material tank, and a second discharge pipe is connected to the second discharge port, and the second discharge pipe is connected to the bottom of the first discharge pipe; The mixing conveying pipe has the bottom of the first discharge pipe connected to the mixing conveying pipe, a screw conveyor is provided inside the mixing conveying pipe, a drive unit is provided at the end of the mixing conveying pipe, the screw conveyor is connected to the drive unit, and the other end of the mixing conveying pipe is connected to the first feed port of the mixing tank. The third raw material tank has a third discharge port at its bottom, and a third discharge pipe is provided on the third discharge port. The third discharge pipe is connected to the second inlet of the mixing tank.

2. The automatic feeding device according to claim 1, characterized in that Control valves are installed on the first discharge port, the second discharge port and the third discharge port.

3. The automatic feeding device according to claim 1, characterized in that, Material metering devices are installed on the first, second, and third raw material tanks.

4. The automatic feeding device according to claim 1, characterized in that, The first discharge pipe includes a connecting section and a mixing section. The connecting section is connected to the first discharge port, and the second discharge pipe is connected to the mixing section.

5. The automatic feeding device according to claim 1, characterized in that, The mixing conveying pipe is inclined and includes an inlet end and an outlet end. The upper side wall of the inlet end is connected to the first outlet pipe, and the driving unit is located at the end of the inlet end.

6. The automatic feeding device according to claim 5, characterized in that The discharge end is integrally provided with an output pipe, which is installed vertically on the first feed inlet, and the screw conveyor extends into the interior of the output pipe.

7. The automatic feeding device according to claim 6, characterized in that An output cavity is formed inside the output tube. The output cavity includes an upper chamber and a lower chamber, which are separated by an openable control panel.

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