Automatic discharging equipment and method

Abstract

The invention relates to the technical field of chemical equipment, and discloses automatic discharging equipment and method.The equipment comprises a solid discharging device, a material collecting tank, a liquid discharging device, a solution barrel and a PLC control device.The solid discharging device can convey solid materials to the material collecting tank, and a solid feeding control valve is arranged at a discharging port of the material collecting tank; the solid feeding control valve can be used for feeding solid materials, the liquid feeding device can convey liquid materials to the solution barrel, the PLC control device is electrically connected with the solid feeding device, the liquid feeding device and the solid feeding control valve, the PLC control device comprises a control program capable of setting a formula, and the PLC control device can control the feeding amount of the solid feeding device and the feeding amount of the liquid feeding device according to the control program. According to the equipment, a blanking formula can be set according to production requirements, accurate metering of various solids and liquids is achieved, automatic blanking of the solids and the liquids is completed in sequence, a manual batching mode can be replaced, and on the basis of improving the accuracy, the labor intensity of workers is relieved, and the working environment of a batching room is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical equipment, and particularly to an automatic feeding device and method. Background Art

[0002] In the chemical industry, the batching of some devices (such as fine chemical membrane production devices) is usually carried out by manual weighing. When multiple solid materials are involved, multiple weighings and separate additions are required, resulting in relatively large batching errors and extremely likely to affect the accuracy of the prepared solution. Moreover, the materials used involve fine particles that are volatile, moisture-absorbing, and easily oxidized by air. Long-term exposure to air may cause deterioration, which will not only affect the product quality, but also seriously pollute the environment in the batching room and affect the physical and mental health of workers. Summary of the Invention

[0003] The object of the present invention is to provide an automatic feeding device and method for solving the above problems.

[0004] To achieve the above object, the present invention provides an automatic feeding device, including a solid feeding device, an aggregate tank, a liquid feeding device, a solution barrel, and a PLC control device, wherein:

[0005] The discharge port of the solid feeding device is communicated with the feed port of the aggregate tank, and the solid feeding device is configured to be able to convey solid materials to the aggregate tank;

[0006] The discharge port of the aggregate tank is communicated with the feed port of the solution barrel, and a solid feed control valve is provided at the discharge port of the aggregate tank;

[0007] The discharge port of the liquid feeding device is communicated with the feed port of the solution barrel, and the liquid feeding device is configured to be able to convey liquid materials to the solution barrel;

[0008] The PLC control device is electrically connected to the solid feeding device, the liquid feeding device, and the solid feed control valve respectively, and the PLC control device includes a control program capable of setting a formula, and the PLC control device is configured to be able to control the feeding amounts of the solid feeding device and the liquid feeding device respectively according to the control program.

[0009] Optionally, the PLC control device is configured to: control the liquid feeding device to feed after the solid feeding device and the aggregate tank have finished feeding.

[0010] Optionally, the solid feeding device includes a storage hopper, a feeder, and a metering unit. The storage hopper is used to store solid materials. The feed inlet of the feeder is communicated with the discharge outlet of the storage hopper, and the discharge outlet of the feeder is communicated with the feed inlet of the aggregate tank. The feeder is used to convey the solid materials in the storage hopper to the aggregate tank according to a preset amount. The storage hopper and the feeder are arranged on the metering unit, and the PLC control device is configured to control the operation of the feeder according to the metering data of the metering unit.

[0011] Optionally, the storage hopper includes a main body and a cover. A storage cavity is formed inside the main body. The storage cavity has a top opening and a bottom opening. The cover is provided on the top opening, and the bottom opening is formed as the discharge outlet of the storage hopper.

[0012] Optionally, the storage hopper further includes an anti-arching component arranged in the storage cavity, and / or the bottom opening is directly and sealingly docked with the feed inlet of the feeder.

[0013] Optionally, the solid feeding device includes a pressure control unit, which can control the pressure in the storage cavity and displace the atmosphere in the storage cavity.

[0014] Optionally, a breathing valve is provided at the top of the aggregate tank, and / or a knocker is provided at the bottom of the aggregate tank.

[0015] Optionally, the liquid feeding device includes a liquid conveying pipeline, a flow meter, and a liquid feed control valve arranged on the liquid conveying pipeline.

[0016] Optionally, the flow meter and the liquid feed control valve are arranged near the downstream end of the liquid conveying pipeline, and the PLC control device is configured to control the operation of the liquid feed control valve according to the flow data of the flow meter.

[0017] Optionally, the automatic feeding equipment further includes an installation platform, which includes a first platform, a second platform, and a ladder. The second platform is arranged at an interval above the first platform. The ladder is arranged between the first platform and the ground. The solid feeding device is installed on the second platform, the aggregate tank and the liquid feeding device are installed on the first platform, and the solution barrel is arranged below the first platform.

[0018] The present invention also provides an automatic feeding method, which uses the above-mentioned automatic feeding equipment. The method includes the following steps:

[0019] S1. Set the corresponding number of the solid feeding devices according to the number of types of solid materials in the formula of the solution to be prepared, and set the corresponding number of the liquid feeding devices according to the number of types of liquid materials in the formula.

[0020] S2. Set the formula in the PLC control device, and control the solid feeding device to feed materials into the aggregate tank according to the formula through the PLC control device. Then, control the aggregate tank to discharge all the materials into the solution barrel through the PLC control device.

[0021] S3. After the aggregate tank finishes discharging materials, control the liquid feeding device to feed materials into the solution barrel according to the formula through the PLC control device.

[0022] The present invention provides an automatic feeding device through the above technical solutions. This device can set the feeding formula according to production needs, realize accurate measurement of various solids and liquids, and sequentially complete the automatic feeding process of solids and liquids. It can replace the manual batching method, reduce the labor intensity of workers on the basis of improving accuracy, and improve the working environment in the batching room.

[0023] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0025] Figure 1 is a schematic structural diagram of the automatic feeding device of the present invention, in which the installation platform is omitted and only one solid feeding device is shown.

[0026] Figure 2 is a top view of the automatic feeding device of the present invention.

[0027] DESCRIPTION OF THE REFERENCE NUMERALS

[0028] 1 - Solid feeding device, 11 - Storage hopper, 111 - Main body, 112 - Cover body, 113 - Arch breaking component, 12 - Feeder, 13 - Measuring unit, 2 - Aggregate tank, 21 - Solid feed control valve, 22 - Knocker, 3 - Liquid feeding device, 31 - Liquid conveying pipeline, 32 - Flowmeter, 33 - Liquid feed control valve, 4 - Solution barrel, 5 - Installation platform, 51 - First platform, 52 - Second platform, 53 - Ladder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The following detailed description of the embodiments and the drawings are used to exemplarily illustrate the principles of the present invention, but cannot be used to limit the scope of the present invention. The present invention can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0030] These embodiments of the present invention are provided to make the present invention thorough and complete, and to fully convey the scope of the present invention to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be construed as merely exemplary, rather than as limitations.

[0031] It should be noted that in the description of the present invention, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] In addition, the "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Terms such as "comprising" or "including" mean that the elements before this term cover the elements listed after this term, and do not exclude the possibility of also covering other elements.

[0033] It should also be noted that in the description of the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0034] All terms used in the present invention have the same meanings as those understood by those of ordinary skill in the art to which the present invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such herein.

[0035] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0036] The present invention provides an automatic blanking device, including a solid blanking device 1, an aggregate tank 2, a liquid blanking device 3, a solution barrel 4, and a PLC control device, wherein:

[0037] The discharge port of the solid blanking device 1 is communicated with the feed port of the aggregate tank 2, and the solid blanking device 1 is arranged to be capable of conveying solid materials to the aggregate tank 2;

[0038] The discharge port of the aggregate tank 2 is communicated with the feed port of the solution barrel 4, and a solid feed control valve 21 is provided at the discharge port of the aggregate tank 2;

[0039] The discharge port of the liquid blanking device 3 is communicated with the feed port of the solution barrel 4, and the liquid blanking device 3 is arranged to be capable of conveying liquid materials to the solution barrel 4;

[0040] The PLC control device is electrically connected to the solid blanking device 1, the liquid blanking device 3, and the solid feed control valve 21 respectively, and the PLC control device includes a control program capable of setting a formula. The PLC control device is arranged to be capable of controlling the blanking amounts of the solid blanking device 1 and the liquid blanking device 3 respectively according to the control program.

[0041] It should be noted that the numbers of the solid blanking device 1 and the liquid blanking device 3 can be one or more respectively.

[0042] During use, the numbers of the solid blanking device 1 and the liquid blanking device 3 used can be determined according to the types of solid materials and liquid materials required, and then the blanking formula (i.e., the blanking amounts of various materials) can be set according to production needs and input into the control program of the PLC control device to control the blanking of the solid blanking device 1 and the liquid blanking device 3.

[0043] The present invention controls the solid feeding device 1 through a PLC control device to quantitatively convey solid materials to the aggregate tank 2 according to a preset amount, and then controls the liquid feeding device 3 through the PLC control device to quantitatively convey liquid materials to the solution tank 4 according to a preset amount, and controls the solid feed control valve 21 to open to convey solid materials or a mixture of multiple solid materials to the solution tank 4, so as to realize the automatic proportioning and feeding of solid materials and liquid materials.

[0044] Through the above technical solution, the present invention provides an automatic feeding device, which can set a feeding formula according to production needs, realize accurate measurement of multiple solids and liquids, and sequentially complete the automatic feeding process of solids and liquids. It can replace the manual batching method, reduce the labor intensity of workers on the basis of improving accuracy, and improve the working environment of the batching room.

[0045] In some embodiments, the PLC control device is set to: control the liquid feeding device 3 to feed after the solid feeding device 1 and the aggregate tank 2 have finished feeding. That is to say, first control the solid materials to be fed into the solution tank 4, and then control the liquid materials to be fed into the solution tank 4. This is conducive to the subsequent stirring and dissolving in the solution tank 4. Because the liquid feeding speed is relatively fast, if the liquid is fed first or the solid and liquid are fed simultaneously, some solid powders may float on the liquid surface and form lumps, thus affecting the subsequent stirring and dissolving.

[0046] In some embodiments, as Figure 1 shown, the solid feeding device 1 includes a storage hopper 11, a feeder 12 and a metering unit 13. The storage hopper 11 is used to store solid materials. The feed inlet of the feeder 12 is communicated with the discharge outlet of the storage hopper 11, and the discharge outlet of the feeder 12 is communicated with the feed inlet of the aggregate tank 2. The feeder 12 is used to convey the solid materials in the storage hopper 11 to the aggregate tank 2 according to a preset amount. The storage hopper 11 and the feeder 12 are arranged on the metering unit 13. The PLC control device is set to be able to control the operation of the feeder 12 according to the metering data of the metering unit 13.

[0047] Among them, as Figure 1 shown, the storage hopper 11 may include a main body 111 and a cover body 112. A storage cavity is formed inside the main body 111. The storage cavity has a top opening and a bottom opening, that is, the storage hopper 11 is a cylindrical shape with openings at both the top and bottom (which can avoid the situation where the materials accumulated in the bottom corner of the storage cavity cannot be discharged). The cover body 112 is covered on the top opening, and the bottom opening is formed as the discharge outlet of the storage hopper 11. By providing the cover body 112, it is possible to prevent the solid materials in the storage cavity from deteriorating, such as absorbing water and oxidation, and also prevent impurities from entering the storage cavity.

[0048] As Figure 1As shown, the storage hopper 11 may further include an arch-breaking member 113 disposed in the storage cavity. The arrangement of the arch-breaking member 113 can prevent the solid material from bridging, facilitating the feeding. Among them, the arch-breaking member 113 can have any suitable structure. For example, it can be Figure 1 a rotating shaft provided with blades horizontally arranged in the storage cavity as shown in Figure 1 . By driving the rotation of the rotating shaft, the blades are driven to rotate to break the arch of the solid material. Among them, the blades can have any suitable shape, such as a bow shape.

[0049] Such as Figure 1 As shown, the bottom opening of the storage hopper 11 can be directly and hermetically docked with the feed inlet of the feeder. Such an arrangement not only facilitates the feeding but also avoids the deterioration of the solid material due to contact with air.

[0050] Among them, the feeder 12 can adopt any suitable implementation manner as long as it can convey solid materials. For example, it can be a single-screw or double-screw (which can be selected according to the fluidity of the solid) feeder, a belt conveyor. Since the single-screw or double-screw feeder and the belt conveyor belong to the prior art, and the improvement of the present invention does not lie in the specific structure of the feeder 12, the structure thereof will not be described in detail herein.

[0051] Among them, the metering unit 13 can adopt any suitable implementation manner. For example, the metering unit 13 can be a weighing scale, a weight sensor, etc. Specifically, the metering unit 13 is a loss-in-weight scale, which can measure the weight difference before and after the feeding. Since the metering unit 13 belongs to the prior art, and the improvement of the present invention does not lie in the specific structure of the metering unit 13, it will not be described in detail herein.

[0052] During use, after setting the feeding formula, the PLC control device controls the feeder 12 to start, outputs the material in the storage hopper 11, the weight of the storage hopper 11 decreases, and after the metering unit 13 detects that the required amount of the formula is reached, it feeds back to the PLC control device, and the PLC control device controls the feeder 12 to stop.

[0053] In some embodiments, the solid feeding device 1 may further include a pressure control unit, which can control the pressure in the storage cavity and displace the atmosphere in the storage cavity. During use, nitrogen can be filled into the storage hopper 11 through the pressure control unit, and the air pressure in the storage hopper 11 is controlled to be a positive pressure to facilitate the feeding, while isolating the air to prevent the material from oxidizing and absorbing water and deteriorating. Preferably, the pressure control unit controls the pressure in the storage hopper 11 to be 10 - 30 KPa.

[0054] Of course, the PLC control device can also be electrically connected to the pressure control unit to control the operation of the pressure control unit.

[0055] In the present invention, the aggregate tank 2 can have any suitable shape, and the aggregate tank 2 is preferably a sealed tank. A breather valve can also be provided at the top of the aggregate tank 2 to facilitate the feeding of materials. Additionally, a knocker 22 can be provided at the bottom of the aggregate tank 2 to facilitate the feeding of materials. Among them, the knocker 22 can be a vibrator.

[0056] In some embodiments, as Figure 1 shown, the liquid feeding device 3 includes a liquid delivery pipeline 31, and a flow meter 32 and a liquid feed control valve 33 (such as a solenoid valve) provided on the liquid delivery pipeline 31.

[0057] Among them, preferably, the flow meter 32 and the liquid feed control valve 33 are arranged near the downstream end of the liquid delivery pipeline 31. The PLC control device is configured to be able to control the operation of the liquid feed control valve 33 according to the flow data of the flow meter 32. Specifically, during the liquid feeding process, the flow meter 32 accumulates the feeding amount. When the flow meter 32 accumulates to the same as the formula setting, it feeds back to the PLC control device, and the PLC control device controls the liquid feed control valve 33 to close and stop the feeding.

[0058] In the present invention, the automatic feeding equipment may further include an installation platform 5. The installation platform 5 includes a first platform 51, a second platform 52, and a ladder 53. The second platform 52 is spaced above the first platform 51, and the ladder 53 is arranged between the first platform 51 and the ground. The solid feeding device 1 is installed on the second platform 52, the aggregate tank 2 and the liquid feeding device 3 are installed on the first platform 51, and the solution barrel 4 is arranged below the first platform 51.

[0059] Among them, the ladder 53 is used for daily inspection by workers and equipment maintenance. By spacing the first platform 51 and the second platform 52, it can prevent interference with the metering process caused by the movement of workers during inspection, thereby ensuring the accuracy of metering.

[0060] The present invention uses a PLC control device to automatically control the operation of the equipment, improving the accuracy of batching and realizing the optimal control of the concentration of each component in the solution. Using automatic feeding equipment instead of manual labor not only improves work efficiency but also reduces the labor intensity of workers. In addition, processes such as weighing and feeding are carried out in a closed manner, greatly reducing the pollution of solid materials to the environment.

[0061] The following introduces a feeding method of the automatic feeding equipment of the present invention in conjunction with the accompanying drawings.

[0062] In conjunction with Figure 2, The automatic feeding equipment includes six solid feeding devices 1 named ABCDEF and one liquid feeding device 3, which can realize the automatic feeding of six kinds of solids and one kind of liquid. Among them, the six kinds of solids include three kinds of powders and three kinds of pellets. The feeding capacity of the metering unit 13 and the specifications of the storage hopper 11 in the six solid feeding devices 1 meet the following conditions:

[0063] The feeding capacity of A is 0.5 - 20 kg / h, and the consumption is 25 kg / d;

[0064] The feeding capacity of B is 0.5 - 20 kg / h, and the consumption is 4 kg / d;

[0065] The feeding capacity of C is 0.5 - 20 kg / h, and the consumption is 20 kg / d;

[0066] The feeding capacity of D is 0.5 - 20 kg / h, and the consumption is 3 kg / d;

[0067] The feeding capacity of E is 0.5 - 20 kg / h, and the consumption is 12 kg / d;

[0068] The feeding capacity of F is 0.5 - 20 kg / h, and the consumption is 2 kg / d;

[0069] In addition, the feeding capacity of the liquid material is 800 kg / h, and the pipeline pressure of the preferred liquid delivery pipeline 31 is 0.4 - 0.7 MPa.

[0070] The steps of automatic feeding are as follows: After the solution barrel 4 is in place, set the formula in the PLC control device, click the metering reset, start the feeding, and the equipment automatically adds the six solid materials into the aggregate tank 2 according to the ratio. After the addition of the solid materials is completed, open the solid feed control valve 21, start the knocker 22, close the solid feed control valve 21 after the solid material feeding is completed, open the liquid feed control valve 33 to add the liquid material, and close the liquid feed control valve 33 after the addition is completed, and the single - time feeding is completed.

[0071] Therefore, the present invention also provides an automatic feeding method, which uses the above - mentioned automatic feeding equipment, and the method includes the following steps:

[0072] S1. Set the corresponding number of solid feeding devices 1 according to the number of types of solid materials in the formula of the solution to be prepared, and set the corresponding number of liquid feeding devices 3 according to the number of types of liquid materials in the formula;

[0073] S2. Set the formula in the PLC control device, and control the solid feeding device 1 to feed materials into the aggregate tank 2 according to the formula through the PLC control device, and then control the aggregate tank 2 to discharge all materials into the solution barrel 4 through the PLC control device;

[0074] S3. After the aggregate tank 2 finishes discharging materials, control the liquid discharging device 3 through the PLC control device to discharge materials into the solution tank 4 according to the said formula.

[0075] So far, the embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details well known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0076] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified or partial technical features can be equivalently replaced without departing from the scope and spirit of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way.

Claims

1. An automatic blanking device, characterized in that, It includes a solid feeding device (1), an aggregate tank (2), a liquid feeding device (3), a solution barrel (4), and a PLC control device, where: The discharge port of the solid feeding device (1) is communicated with the feed port of the aggregate tank (2), and the solid feeding device (1) is arranged to be able to convey solid materials to the aggregate tank (2); The discharge port of the aggregate tank (2) is communicated with the feed port of the solution barrel (4), and a solid feed control valve (21) is provided at the discharge port of the aggregate tank (2); The discharge port of the liquid feeding device (3) is communicated with the feed port of the solution barrel (4), and the liquid feeding device (3) is arranged to be able to convey liquid materials to the solution barrel (4); The PLC control device is electrically connected to the solid feeding device (1), the liquid feeding device (3), and the solid feed control valve (21) respectively, and the PLC control device includes a control program capable of setting a formula, and the PLC control device is arranged to be able to control the feeding amounts of the solid feeding device (1) and the liquid feeding device (3) respectively according to the control program.

2. The automatic blanking device according to claim 1, characterized in that, The PLC control device is arranged to: first control the solid feeding device (1) and the aggregate tank (2) to finish feeding, and then control the liquid feeding device (3) to feed.

3. The automatic blanking device according to claim 1, characterized in that, The solid feeding device (1) includes a storage hopper (11), a feeder (12), and a metering unit (13). The storage hopper (11) is used for storing solid materials. The feed port of the feeder (12) is communicated with the discharge port of the storage hopper (11), and the discharge port of the feeder (12) is communicated with the feed port of the aggregate tank (2). The feeder (12) is used for conveying the solid materials in the storage hopper (11) to the aggregate tank (2) according to a preset amount. The storage hopper (11) and the feeder (12) are arranged on the metering unit (13), and the PLC control device is arranged to be able to control the operation of the feeder (12) according to the metering data of the metering unit (13).

4. The automatic blanking device according to claim 3, characterized in that, The storage hopper (11) includes a main body (111) and a cover body (112). A storage cavity is formed inside the main body (111). The storage cavity has a top opening and a bottom opening. The cover body (112) is covered on the top opening, and the bottom opening is formed as the discharge port of the storage hopper (11).

5. The automatic blanking device according to claim 4, characterized in that, The storage hopper (11) further includes an arch-breaking component (113) arranged in the storage cavity, and / or the bottom opening is directly sealed and docked with the feed port of the feeder (12).

6. The automatic blanking device according to claim 3, wherein The solid feeding device (1) includes a pressure control unit, and the pressure control unit can control the pressure of the storage hopper (11) and displace the atmosphere in the storage cavity.

7. The automatic blanking device according to claim 1, characterized in that, A breathing valve is provided at the top of the aggregate tank (2), and / or a knocker (22) is provided at the bottom of the aggregate tank (2).

8. The automatic blanking device according to claim 1, characterized in that, The liquid feeding device (3) includes a liquid delivery pipeline (31), a flow meter (32), and a liquid feed control valve (33) arranged on the liquid delivery pipeline (31).

9. The automatic blanking device according to claim 8, characterized in that, The flowmeter (32) and the liquid feed control valve (33) are arranged near the downstream end of the liquid delivery pipeline (31), and the PLC control device is configured to be able to control the operation of the liquid feed control valve (33) according to the flow data of the flowmeter (32).

10. The automatic blanking device according to any one of claims 1-9, characterized in that, The automatic blanking device further includes an installation platform (5), and the installation platform (5) includes a first platform (51), a second platform (52) and a ladder (53). The second platform (52) is disposed at an interval above the first platform (51). The ladder (53) is disposed between the first platform (51) and the ground. The solid blanking device (1) is installed on the second platform (52). The aggregate tank (2) and the liquid blanking device (3) are installed on the first platform (51). The solution barrel (4) is disposed below the first platform (51).

11. An automatic blanking method, characterized in that, The method uses the automatic blanking device described in claim 1, and the method includes the following steps: S1. Set the corresponding number of the solid blanking devices (1) according to the number of types of solid materials in the formula of the solution to be prepared, and set the corresponding number of the liquid blanking devices (3) according to the number of types of liquid materials in the formula; S2. Set the formula in the PLC control device, and control the solid blanking device (1) to blank according to the formula into the aggregate tank (2) through the PLC control device, and then control the aggregate tank (2) to blank all into the solution barrel (4) through the PLC control device; S3. After the blanking of the aggregate tank (2) is completed, control the liquid blanking device (3) to blank according to the formula into the solution barrel (4) through the PLC control device.

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