Automatic feeding device for ton bags

Abstract

The utility model relates to the technical field of coating resin production, especially to a ton bag automatic feeding device, including ton bag, weighing unit, feeding unit, mixing kettle, drive unit, fluidization unit and PLC system, the weighing unit is installed in the top wall of the stock bin, the ton bag is hung in the weighing unit, the feeding unit includes feeding pipeline and powder pump, and the discharge port of ton bag is connected with the feed inlet of mixing kettle through feeding pipeline, and the powder pump is installed on the feeding pipeline, the drive unit is connected with the powder pump and is used for sending in drive gas, the fluidization unit is connected with the feeding pipeline and is used for sending in fluidization gas, the PLC system controls weighing unit, feeding unit, drive unit and fluidization unit, the utility model discloses simple structure design realizes the automatic input of ton bag powder in the closed environment even, quantitative and uniform speed in mixing kettle.

Description

Technical Field

[0001] This utility model relates to the field of coating resin production technology, and in particular to an automatic feeding device for ton bags. Background Technology

[0002] In the production process of coating resin, the liquid is first pumped into the mixing tank and stirred. Then, the powder is added into the mixing tank and dispersed and mixed with the liquid. After mixing, the powder is sheared and dispersed into the matrix material by high-speed dispersion and stirring. Finally, other matrix additives are added and stirred evenly to complete the product production.

[0003] Currently, the powder feeding process in existing coating resin production mainly adopts manual direct input. This method has the following problems: (1) The feeding process is an open operation, and the powder is prone to leakage, which increases powder loss and increases the fugitive emission of volatile organic compounds (VOCs), polluting the production environment and affecting the health of workers. (2) The labor intensity of employees is high and the feeding time is long, resulting in low efficiency of the feeding operation. (3) The powder speed cannot be accurately controlled during the feeding process, resulting in uneven mixing and dispersion of materials, which affects product quality. Although some feeding methods use automatic feeding systems, their structural design is complex, the cost is high, and quantitative feeding cannot be achieved. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide an automatic feeding device for ton bags that has a simple structural design and realizes the automatic feeding of powder in ton bags into the mixing kettle in a closed environment in a uniform, quantitative and uniform speed.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an automatic ton bag feeding device, including a ton bag, a weighing unit, a feeding unit, a mixing tank, a driving unit, a fluidizing unit, and a PLC system; the weighing unit is installed on the top wall of the silo, and the ton bag is suspended from the weighing unit; the feeding unit includes a feeding pipeline and a powder pump, the outlet of the ton bag is connected to the inlet of the mixing tank through the feeding pipeline, and the powder pump is installed on the feeding pipeline; the driving unit is connected to the powder pump and is used to supply driving gas; the fluidizing unit is connected to the feeding pipeline and is used to supply fluidizing gas; the PLC system controls the weighing unit, the feeding unit, the driving unit, and the fluidizing unit.

[0006] Furthermore, the feeding unit also includes a feed valve, which is installed on the feeding pipeline and located on the left side of the powder pump.

[0007] Furthermore, the fluidization unit includes an air-feeding gas module and an auxiliary gas module. The air-feeding gas module is connected to the feeding pipeline on the right side of the powder pump, and the auxiliary gas module is connected to the feeding pipeline on the upper side of the feed valve.

[0008] Furthermore, the air-feeding gas module includes a first air inlet pipe, a first air inlet valve, a first gas flow meter, and a first ball valve. The first air inlet pipe is connected to the feeding pipe on the right side of the powder pump. The first air inlet valve, the first gas flow meter, and the first ball valve are installed sequentially on the first air inlet pipe along the air inlet direction.

[0009] Furthermore, the auxiliary gas module includes a second air inlet pipe, a second air inlet valve, a second gas flow meter, and a second ball valve. The second air inlet pipe is connected to the feeding pipe on the upper side of the feeding valve. The second air inlet valve, the second gas flow meter, and the second ball valve are installed sequentially on the second air inlet pipe along the air inlet direction.

[0010] Furthermore, the drive unit includes a fourth air intake pipe and a third air intake valve. The fourth air intake pipe is connected to the powder pump, and the third air intake valve is installed on the fourth air intake pipe.

[0011] Furthermore, the weighing unit includes a fixed frame, a weighing instrument, and a weighing rack. The fixed frame is installed on the top wall of the silo, and the bottom end of the fixed frame is connected to the weighing rack via the weighing instrument. The ton bag is suspended at the bottom end of the weighing rack.

[0012] Furthermore, the feeding pipeline includes a first pipeline, a first hose, a second pipeline, and a second hose. The outlet of the ton bag is connected to the inlet of the mixing vessel in sequence through the first pipeline, the first hose, the second pipeline, and the second hose. The feed valve is installed on the first pipeline, and the powder pump is installed on the second pipeline.

[0013] Furthermore, the second air intake pipeline includes a third pipeline, a third hose, and a fourth pipeline. The third pipeline is connected to the feeding pipeline above the feed valve in sequence through the third hose and the fourth pipeline. The second air intake valve, the second gas flow meter, and the second ball valve are installed in sequence on the third pipeline along the air intake direction.

[0014] Furthermore, a third ball valve is installed at the feed inlet of the mixing vessel.

[0015] The beneficial effects of this utility model are:

[0016] (1) This utility model controls the weighing unit, feeding unit, driving unit and fluidization unit through PLC system, so that the powder in the ton bag is automatically fed into the mixing kettle in a uniform, quantitative and uniform speed in a closed environment, ensuring that the material is mixed and dispersed evenly, reducing the labor intensity of workers, improving production efficiency and product quality, reducing production costs and powder loss, protecting the production environment, and the structure design is simple.

[0017] (2) By setting up a driving unit and a fluidizing unit, this utility model allows the fluidizing gas and the driving gas to be separated, and the fluidizing gas is used to independently fluidize the powder, avoiding oxidation and deliquescence of the powder when it comes into contact with air, thereby avoiding pipeline blockage.

[0018] (3) By setting up the first hose, the second hose and the third hose, the stress of the feeding pipeline and the second air inlet pipeline during operation can be released in time, ensuring the accuracy of the weighing unit and extending the service life of the pipeline. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the feeding unit in this utility model.

[0022] In the diagram: 100, Ton bag; 200, Weighing unit; 300, Feeding unit; 310, Feeding pipeline; 320, Powder pump; 330, Feed valve; 400, Mixing vessel; 500, Drive unit; 510, Fourth air inlet pipeline; 520, Third air inlet valve; 600, Fluidization unit; 610, Air delivery gas module; 611, First air inlet pipeline; 612, First air inlet valve; 613, First gas flow meter; 614, First ball valve; 620, Auxiliary gas module; 621, Second air inlet pipeline; 622, Second air inlet valve; 623, Second gas flow meter; 624, Second ball valve; 700, Third ball valve. Detailed Implementation

[0023] The present invention will now be further described with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0024] like Figure 1 and Figure 2As shown, an automatic ton bag feeding device includes a ton bag 100, a weighing unit 200, a feeding unit 300, a mixing vessel 400, a drive unit 500, a fluidizing unit 600, and a PLC system (not shown in the figure). The weighing unit 200 is installed on the top wall of the silo, and the ton bag 100 is suspended from the weighing unit 200 to obtain weight information. The feeding unit 300 includes a feeding pipeline 310 and a powder pump 320. The outlet of the ton bag 100 is connected to the inlet of the mixing vessel 400 through the feeding pipeline 310. The powder pump 320 is installed on the feeding pipeline 310 to realize the conveying of powder in a closed environment. The drive unit 500 is connected to the powder pump 320 for supplying driving gas. The fluidizing unit 600 is connected to the feeding pipeline 310 for supplying fluidizing gas. The PLC system controls the weighing unit 200, the feeding unit 300, the drive unit 500, and the fluidizing unit 600.

[0025] Specifically, the ton bag 100 is made of PP material, and the outlet of the ton bag 100 is tied tightly with a rope; the inlet of the mixing vessel 400 is equipped with a third ball valve 700; the driving gas is air; and the fluidizing gas is an inert gas, such as nitrogen.

[0026] The weighing unit 200, feeding unit 300, driving unit 500 and fluidization unit 600 are controlled by a PLC system, so that the powder in the ton bag 100 is automatically fed into the mixing kettle 400 in a closed environment in a uniform, quantitative and uniform speed. This ensures that the material is mixed and dispersed evenly, reduces the labor intensity of workers, improves production efficiency and product quality, reduces production costs and powder loss, protects the production environment, and has a simple structural design.

[0027] The weighing unit 200 includes a fixed frame, a weighing instrument, and a weighing rack. The fixed frame is installed on the top wall of the silo, and the bottom end of the fixed frame is connected to the weighing rack via the weighing instrument. The ton bag 100 is suspended from the bottom end of the weighing rack. Specifically, the weighing instrument is connected to a PLC system, and the PLC system reads the weight information from the weighing instrument.

[0028] like Figure 2 As shown, the feeding unit 300 also includes a feed valve 330, which is installed on the feeding pipeline 310 and located on the left side of the powder pump 320. Specifically, the feed valve 330 is controlled by a PLC system.

[0029] The feeding pipeline 310 includes a first pipeline, a first hose, a second pipeline, and a second hose. The outlet of the ton bag 100 is connected to the inlet of the mixing vessel 400 in sequence through the first pipeline, the first hose, the second pipeline, and the second hose. The feed valve 330 is installed on the first pipeline, and the powder pump 320 is installed on the second pipeline.

[0030] Specifically, the first hose is an anti-static hose; the second hose can be replaced with a stainless steel hose.

[0031] By using the first and second hoses, the stress in the feeding pipeline 310 can be released in a timely manner during operation, ensuring accurate measurement by the weighing unit 200 and extending the service life of the pipeline. Simultaneously, this design of the feeding pipeline 310 assists the fluidization unit 600 in fluidization, preventing the powder from bridging.

[0032] like Figure 1 and Figure 2 As shown, the drive unit 500 includes a fourth air intake pipe 510 and a third air intake valve 520. The fourth air intake pipe 510 is connected to the powder pump 320, and the third air intake valve 520 is installed on the fourth air intake pipe 510. Specifically, the third air intake valve 520 is controlled by a PLC system.

[0033] like Figure 1 and Figure 2 As shown, the fluidization unit 600 includes an air supply gas module 610 and an auxiliary gas module 620. The air supply gas module 610 is connected to the feeding pipe 310 on the right side of the powder pump 320, and the auxiliary gas module 620 is connected to the feeding pipe 310 on the upper side of the feed valve 330.

[0034] By setting up the drive unit 500 and the fluidization unit 600, the fluidizing gas and the drive gas can be separated, and the fluidizing gas can be used to fluidize the powder independently, avoiding oxidation and deliquescence of the powder upon contact with air, thereby preventing pipeline blockage.

[0035] like Figure 1 and Figure 2 As shown, the air-feeding gas module 610 includes a first air inlet pipe 611, a first air inlet valve 612, a first gas flow meter 613, and a first ball valve 614. The first air inlet pipe 611 is connected to the feeding pipe 310 on the right side of the powder pump 320. The first air inlet valve 612, the first gas flow meter 613, and the first ball valve 614 are sequentially installed on the first air inlet pipe 611 along the air inlet direction. Specifically, the first air inlet pipe 611 is connected to the second pipe on the right side of the powder pump 320; the first air inlet valve 612 is controlled by a PLC system.

[0036] like Figure 1 and Figure 2 As shown, the auxiliary gas module 620 includes a second inlet pipe 621, a second inlet valve 622, a second gas flow meter 623, and a second ball valve 624. The second inlet pipe 621 is connected to the feeding pipe 310 above the feed valve 330. The second inlet valve 622, the second gas flow meter 623, and the second ball valve 624 are sequentially installed on the second inlet pipe 621 along the inlet direction. Specifically, the second inlet pipe 621 is connected to the first pipe above the feed valve 330; the second inlet valve 622 is controlled by a PLC system.

[0037] The second air intake pipe 621 includes a third pipe, a third flexible hose, and a fourth pipe. The third pipe is connected in sequence to the feeding pipe 310 above the feed valve 330 via the third flexible hose and the fourth pipe. The second air intake valve 622, the second gas flow meter 623, and the second ball valve 624 are installed in sequence on the third pipe along the air intake direction. Specifically, the fourth pipe is connected to the first pipe above the feed valve 330.

[0038] By installing the third hose, the stress on the second air intake pipe 621 can be released in a timely manner during operation, ensuring the accuracy of the weighing unit 200 and extending the service life of the pipe.

[0039] During operation, connect the first pipeline to the outlet of the ton bag 100 and open the first air inlet valve 612 to adjust the flow rate; open the third air inlet valve 520 and start the powder pump 320; untie the rope at the outlet of the ton bag 100 to begin powder discharge. The powder enters the sealed feeding pipeline 310 and is transported evenly and at a constant speed under the action of the powder pump 320; immediately after powder discharge begins, open the second air inlet valve 622 to prevent powder from clogging the first pipeline between the ton bag 100 and the powder pump 320; after the ton bag 100 shrinks, the powder discharge speed will slow down due to the shrinkage of the ton bag 100, so temporarily increase the flow rate of the second air inlet pipeline 621. After the ton bag 100 expands, restore the flow rate of the second air inlet pipe 621 to its original level. After the powder is basically discharged, temporarily increase the flow rate of the second air inlet pipe 621 to make the ton bag 100 expand and contract. Repeat this operation about three times. During expansion, the operator taps the side of the ton bag 100 to make the powder adhering to the inner wall of the ton bag 100 fall off. After the powder discharge of the ton bag 100 is completed, close the second air inlet valve 622 and the third air inlet valve 520, stop the powder pump 320, and remove the first pipe. Perform the powder discharge of the next ton bag 100 and repeat the above operation. Finally, stop the first air inlet valve 612 and end the operation.

[0040] The ton bag 100 is placed in the silo, and the PLC system reads the weight information from the weighing instrument in the weighing unit 200:

[0041] When feeding begins, the PLC system interlocks and opens the feed valve 330 and the third air inlet valve 520, while simultaneously opening the first air inlet valve 612 and the second air inlet valve 622 in sequence. After feeding begins, when the weight information read by the PLC system reaches the set value, the PLC system interlocks and closes the feed valve 330 and the third air inlet valve 520, while simultaneously closing the first air inlet valve 612 and the second air inlet valve 622, thereby achieving quantitative feeding.

[0042] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. An automatic feeding device for ton bags, characterized in that: The system includes a ton bag (100), a weighing unit (200), a feeding unit (300), a mixing vessel (400), a drive unit (500), a fluidization unit (600), and a PLC system. The weighing unit (200) is installed on the top wall of the silo, and the ton bag (100) is suspended from the weighing unit (200). The feeding unit (300) includes a feeding pipeline (310) and a powder pump (320), and the outlet of the ton bag (100) is connected to the feeding pipeline. (310) is connected to the inlet of the mixing vessel (400), and the powder pump (320) is installed on the feeding pipeline (310); the drive unit (500) is connected to the powder pump (320) and is used to feed the driving gas; the fluidization unit (600) is connected to the feeding pipeline (310) and is used to feed the fluidizing gas; the PLC system controls the weighing unit (200), the feeding unit (300), the drive unit (500) and the fluidization unit (600).

2. The automatic ton bag feeding device according to claim 1, characterized in that: The feeding unit (300) also includes a feed valve (330), which is installed on the feeding pipeline (310) and located on the left side of the powder pump (320).

3. The automatic ton bag feeding device according to claim 2, characterized in that: The fluidization unit (600) includes an air-feeding gas module (610) and an auxiliary gas module (620). The air-feeding gas module (610) is connected to the feeding pipeline (310) on the right side of the powder pump (320), and the auxiliary gas module (620) is connected to the feeding pipeline (310) on the upper side of the feed valve (330).

4. The automatic ton bag feeding device according to claim 3, characterized in that: The air delivery gas module (610) includes a first air inlet pipe (611), a first air inlet valve (612), a first gas flow meter (613), and a first ball valve (614). The first air inlet pipe (611) is connected to the feeding pipe (310) on the right side of the powder pump (320). The first air inlet valve (612), the first gas flow meter (613), and the first ball valve (614) are installed sequentially on the first air inlet pipe (611) along the air inlet direction.

5. The automatic ton bag feeding device according to claim 3, characterized in that: The auxiliary gas module (620) includes a second air inlet pipe (621), a second air inlet valve (622), a second gas flow meter (623), and a second ball valve (624). The second air inlet pipe (621) is connected to the feeding pipe (310) on the upper side of the feeding valve (330). The second air inlet valve (622), the second gas flow meter (623), and the second ball valve (624) are installed sequentially on the second air inlet pipe (621) along the air inlet direction.

6. The automatic ton bag feeding device according to claim 1, characterized in that: The drive unit (500) includes a fourth air intake pipe (510) and a third air intake valve (520). The fourth air intake pipe (510) is connected to the powder pump (320), and the third air intake valve (520) is installed on the fourth air intake pipe (510).

7. The automatic ton bag feeding device according to claim 1, characterized in that: The weighing unit (200) includes a fixed frame, a weighing instrument, and a weighing frame. The fixed frame is installed on the top wall of the silo, and the bottom end of the fixed frame is connected to the weighing frame through the weighing instrument. The ton bag (100) is suspended at the bottom end of the weighing frame.

8. The automatic ton bag feeding device according to claim 2, characterized in that: The feeding pipeline (310) includes a first pipeline, a first hose, a second pipeline, and a second hose. The outlet of the ton bag (100) is connected to the inlet of the mixing vessel (400) in sequence through the first pipeline, the first hose, the second pipeline, and the second hose. The feed valve (330) is installed on the first pipeline, and the powder pump (320) is installed on the second pipeline.

9. The automatic ton bag feeding device according to claim 5, characterized in that: The second air intake pipe (621) includes a third pipe, a third hose and a fourth pipe. The third pipe is connected to the feeding pipe (310) above the feed valve (330) in sequence through the third hose and the fourth pipe. The second air intake valve (622), the second gas flow meter (623) and the second ball valve (624) are installed in sequence on the third pipe along the air intake direction.

10. The automatic ton bag feeding device according to claim 1, characterized in that: The mixing vessel (400) is equipped with a third ball valve (700) at its feed inlet.

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