Liquid feeding device and cement production equipment

Abstract

The utility model relates to the technical field of feeding devices, and discloses a liquid feeding device and cement production equipment, the liquid feeding device comprises a feeding pipe, a flow dividing pipe and scattering blades, the scattering blades are rotatably arranged in a liquid outlet channel and located on the inner side of a liquid outlet, and the scattering blades are driven by liquid flowing in the first direction to rotate. During application, liquid is conveyed to the flow dividing pipe through the feeding pipe, flows into the liquid outlet channel and flows out of the liquid outlet, in the process, the liquid flows through the scattering blades to drive the blades to rotate, the effect of pressurizing and scattering the liquid is achieved, and the liquid outlet pressure and uniformity can be effectively improved. The cement production equipment adopts the feeding device to spray the liquid additive to the raw materials, so that the discharging uniformity of the liquid additive can be improved, the uniform mixing of the raw materials and the liquid additive is facilitated, and the quality stability of cement processing is improved.

Description

Technical Field

[0001] The present application relates to the technical field of feeding devices, and in particular to a liquid feeding device and cement production equipment. Background Art

[0002] In related technologies, liquid dosing devices suffer from uneven dosing, making them difficult to adapt to production requirements requiring high dosing uniformity. For example, in cement production, liquid additives must be effectively distributed and thoroughly mixed with the raw materials. Uneven dosing of liquid additives can affect cement quality, hindering both production quality and efficiency. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a liquid feeding device capable of uniformly feeding materials. The present application also proposes a cement production equipment having the liquid feeding device.

[0004] In the first aspect, the liquid feeding device of the embodiment of the present application includes a feeding pipe, a diverter pipe and a scattering blade, the feeding pipe has a main channel inside; the diverter pipe is connected to the feeding pipe, and the diverter pipe is provided with a diverter channel and a liquid outlet channel inside, the diverter channel connects the main channel and the liquid outlet channel, one end of the liquid outlet channel passes through the diverter pipe along a first direction to form a liquid outlet; the scattering blade is rotatably arranged in the liquid outlet channel and is located on the inner side of the liquid outlet, and the scattering blade is driven to rotate by the liquid flowing along the first direction.

[0005] The liquid feeding device of the embodiment of the present application has at least the following beneficial effects: when in use, the liquid is transported to the diversion pipe through the feeding pipe, flows into the liquid outlet channel and flows out from the liquid outlet. During this process, the liquid flows through the breaking up blades, driving the blades to rotate, which has the effect of pressurizing and breaking up the liquid, and can effectively improve the outlet pressure and uniformity.

[0006] According to the liquid feeding device of the embodiment of the present application, the liquid feeding device further includes a discharge cover, which covers the liquid outlet and is connected to the diversion pipe, and a plurality of through holes are distributed on the discharge cover.

[0007] According to the liquid feeding device of the embodiment of the present application, the aperture of the through hole ranges from 0.5 mm to 2 mm.

[0008] According to the liquid feeding device of an embodiment of the present application, the liquid feeding device also includes a mounting shaft extending along a first direction, the mounting shaft is located in the liquid outlet channel, the mounting shaft is connected to the discharge cover or the diversion pipe, and the breaking blade is rotatably connected to the mounting shaft.

[0009] According to the liquid feeding device of the embodiment of the present application, the mounting shaft is provided with a limiting portion, which is located on the side of the scattering blade facing the liquid outlet and is used to limit the distance between the scattering blade and the discharge cover.

[0010] According to the liquid feeding device of the embodiment of the present application, the scattering blades include a shaft sleeve and fan blades, the shaft sleeve is rotatably sleeved on the mounting shaft, a plurality of the fan blades are wound around the outer peripheral wall of the shaft sleeve, and the fan blades are connected to the shaft sleeve.

[0011] According to the liquid feeding device of the embodiment of the present application, the diverter pipe is extended along the second direction, the second direction is perpendicular to the first direction, the diverter pipe is provided with a plurality of liquid outlet channels, adjacent liquid outlet channels are arranged at intervals, and each liquid outlet channel is provided with the breaking blade.

[0012] According to the liquid feeding device of the embodiment of the present application, the feeding pipe is extended along the first direction and is connected to the side of the diversion pipe away from the liquid outlet.

[0013] According to the liquid feeding device of an embodiment of the present application, the liquid feeding device further includes a flow rate controller, which is connected to the feeding pipe and is used to adjust the liquid flow rate transported from the feeding pipe to the diversion pipe.

[0014] Secondly, the cement production equipment of the embodiment of the present application includes a conveying device and the above-mentioned liquid feeding device, the conveying device is used to convey raw materials, and the diversion pipe is horizontally arranged above the conveying device to sprinkle liquid additives to the raw materials on the conveying device.

[0015] The liquid feeding device of the embodiment of the present application has at least the following beneficial effects: cement production equipment uses the feeding device of the embodiment of the present application to sprinkle liquid additives on raw materials, which can improve the discharge uniformity of the liquid additives, thereby helping to evenly mix the raw materials and liquid additives, thereby improving the quality stability of cement processing.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a liquid feeding device according to an embodiment of the present application;

[0018] Figure 2 for Figure 1 The AA cross-sectional view shows the structure of the scattered blades;

[0019] Figure 3 for Figure 1The internal schematic diagram of the discharge channel in FIG, illustrating the structure of the scattering blades, the rotating shaft and the discharge cover;

[0020] Figure 4 for Figure 1 The BB cross-sectional view shows the structure of the discharge cover.

[0021] Reference numerals:

[0022] Feeding pipe 100; flow rate controller 110;

[0023] Diverter pipe 200; liquid outlet channel 210; liquid outlet 220;

[0024] Scattering blades 300; fan blades 310; shaft sleeve 320;

[0025] Discharge cover 400; through hole 410;

[0026] The mounting shaft 500 , the first limiting portion 510 , and the second limiting portion 520 . DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the concept and technical effects of this application in conjunction with the embodiments to fully understand the purpose, features and effects of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of this application.

[0028] In the description of the embodiments of the present application, if orientation descriptions are involved, the orientations or positional relationships indicated by "up", "down", "front", "back", "left", "right", etc. are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0029] In the description of the embodiments of the present application, if a certain feature is referred to as being “set,” “fixed,” “connected,” or “installed” on another feature, it may be directly set, fixed, or connected on the other feature, or it may be indirectly set, fixed, connected, or installed on the other feature. In the description of the embodiments of the present application, if “several” is involved, it means more than one; if “multiple” is involved, it means more than two; if “greater than,” “less than,” or “exceeds” is involved, it should be understood as not including the number itself; if “above,” “below,” or “within” is involved, it should be understood as including the number itself. If “first” or “second” is involved, it should be understood as being used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the related art, the liquid feeding device has the problem of uneven feeding, which affects the quality of the mixing of related products and liquids. Taking cement production as an example, some cement liquid additives are used in the cement production process. Usually, the cement liquid additives are added by flowing directly from the storage tank through a hose onto the belt and mixing with the production raw materials on the belt. Because the hose cannot be evenly sprinkled on the production raw materials during feeding, the production raw materials are fully mixed. At the same time, due to the concentrated water output, the cement liquid additive flows in the same area of ​​the belt for a long time, resulting in the accumulation of production raw materials in this area on the belt, causing an increase in return material on the belt, affecting the cement quality and the environment of the production site.

[0031] The present application proposes a liquid feeding device and cement production equipment having the liquid feeding device. The liquid feeding device can effectively improve the uniformity of feeding. The cement production equipment uses the liquid feeding device to feed liquid additives, which can effectively solve the problem of poor mixing uniformity of cement liquid additives and cement production raw materials, improve the quality of cement products and keep the production site environment clean.

[0032] The following describes the embodiments of the present application in conjunction with the accompanying drawings:

[0033] refer to Figures 1 to 3 The liquid feeding device of the embodiment of the first aspect of the present application includes a feeding pipe 100, a diverter pipe 200 and a breaking blade 300. The feeding pipe 100 has a main channel inside for receiving liquid and transporting it to the diverter pipe 200. The diverter pipe 200 is connected to the feeding pipe 100. The diverter pipe 200 is provided with a diverter channel and a liquid outlet channel 210 inside. The diverter channel connects the main channel and the liquid outlet channel 210. After the liquid input from the feeding pipe 100 enters the diverter channel, the diverter pipe 200 diverts the liquid to the liquid outlet channel 210. One end of the liquid outlet channel 210 passes through the diverter pipe 200 along a first direction to form a liquid outlet 220. Thus, the liquid is fed outward through the liquid outlet 220.

[0034] The liquid outlet channel 210 is provided with a dispersion blade 300. The dispersion blade 300 is rotatably disposed within the liquid outlet channel 210 and is located inside the liquid outlet 220. As liquid enters the liquid outlet channel 210 and flows toward the liquid outlet 220 in a first direction, the liquid flows through the dispersion blade 300. The dispersion blade 300 is driven to rotate by the liquid flowing in the first direction. The liquid flowing through the dispersion blade 300 drives the blade to rotate, thereby increasing the pressure and dispersing the liquid, which can effectively reduce the pressure and improve the uniformity of the liquid outlet.

[0035] In some embodiments, the breaking blade 300 may have a plurality of centrally symmetrically arranged fan blades 310. The fan blades 310 may be arranged as fan-shaped blades. The rotation plane of the fan blades 310 may be parallel to the liquid outlet 220, thereby improving the flatness of the structure and facilitating the formation of a more uniform pressurization between the liquid outlet 220 and the fan blades 310.

[0036] refer to Figure 3 and Figure 4 In some embodiments, the liquid feeding device further includes a discharge cover 400, which covers the liquid outlet 220 and is connected to the diversion pipe 200. The discharge cover 400 can be detachably connected to the diversion pipe 200 by screwing or snapping in the liquid outlet 220, or fixedly connected to the diversion pipe 200 by bonding, welding, or the like.

[0037] The discharge cap 400 is provided with a plurality of through-holes 410. This allows the liquid, after being pressurized and dispersed by the dispersion blades 300, to be further pressurized through the through-holes 410 of the discharge cap 400 and then discharged through the fine pores, significantly improving the uniformity of the liquid discharge. Therefore, the liquid is first pressurized and dispersed by the dispersion blades 300 before being discharged through the through-holes 410 of the discharge cap 400, resulting in a higher discharge pressure and more uniform liquid dispersion.

[0038] In a specific implementation, the aperture of the through hole 410 can range from 0.5 mm to 2 mm, for example, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, or any other value within the range of 0.5 mm to 2 mm. Within this aperture range, a pore structure can be formed, and the liquid can flow out through the pore structure after being pressurized, which can effectively increase the pressure. The pressurized liquid is sprayed out through the pores distributed on the discharge cover 400, which can achieve a relatively uniform spraying effect, which is beneficial to the uniform mixing of the liquid and the material to be mixed.

[0039] refer to Figure 3In some embodiments of the liquid feeding device, the liquid feeding device further includes a mounting shaft 500 extending along a first direction, the mounting shaft 500 being located in the liquid outlet channel 210, and the mounting shaft 500 being connected to the discharge cover 400. For example, one end of the mounting shaft 500 facing the liquid outlet 220 is connected to the discharge cover 400. The scattering blades 300 are rotatably connected to the mounting shaft 500. Thus, the mounting shaft 500, the discharge cover 400, and the scattering blades 300 can be assembled into a module for assembly and disassembly, which is convenient for operation and easy to clean. Simply open the discharge cover 400, and the mounting shaft 500 and the scattering blades 300 can be moved out of the liquid outlet 220 along with the discharge cover 400, thereby freeing up the liquid outlet channel 210 for cleaning the interior. The mounting shaft 500 and the scattering blades 300 can be cleaned from the outside, which is more convenient to operate.

[0040] In some other embodiments of the liquid feeding device, the mounting shaft 500 can also be connected to the shunt pipe 200, and the scattering blades 300 can be rotatably connected to the mounting shaft 500. As a result, there is no need to reserve a connection position for the mounting shaft 500 on the discharge cover 400, so as to avoid occupying the liquid discharge area. This frees up some area to arrange more through holes 410 for discharging, further improving the uniformity of the discharge. In addition, the mounting shaft 500 and the scattering blades 300 are not supported by the discharge cover 400. The force generated by the rotation of the scattering blades 300 when driven by the liquid is transmitted from the mounting shaft 500 to the shunt pipe 200, thereby reducing the load on the discharge cover 400 and helping to improve the installation stability of the discharge cover 400.

[0041] refer to Figure 3 The mounting shaft 500 may be provided with some limiting measures to axially limit the scattering blades 300. For example, in some embodiments, the mounting shaft 500 is provided with a first limiting portion 510. The first limiting portion 510 is located on the side of the scattering blades 300 facing the liquid outlet 220. The first limiting portion 510 may be a flange structure or a protruding point structure provided on the outer periphery of the mounting shaft 500, or a detachably connected end cap structure. The first limiting portion 510 protrudes from the outer wall surface of the mounting shaft 500 and can abut on the side of the scattering blades 300 facing the liquid outlet 220 to limit the displacement of the scattering blades 300 toward the liquid outlet 220. Furthermore, the first limiting portion 510 can also be used to limit the distance between the scattering blades 300 and the discharge cover 400, ensuring sufficient distance between the scattering blades 300 and the discharge cover 400 to avoid interference between the scattering blades 300 and the discharge cover 400. Furthermore, it can also facilitate pressurization of the liquid and maintain flow space for smooth liquid flow.

[0042] In some embodiments, the mounting shaft 500 may also be provided with a second stopper 520 on the side of the scattering blade 300 facing away from the liquid outlet 220. Similarly, the second stopper 520 may also be a flange structure or a protrusion structure provided on the outer periphery of the mounting shaft 500 and a detachably connected end cap structure. The second stopper 520 protrudes from the outer wall of the mounting shaft 500 and can abut against the side of the scattering blade 300 facing away from the liquid outlet 220 to limit the displacement of the scattering blade 300 away from the liquid outlet 220. This prevents the scattering blade 300 from shaking inside the liquid outlet channel 210 and improves the stability of the structure.

[0043] The rotatable connection between the scattering blade 300 and the mounting shaft 500 can adopt a sleeve-type structure. For example, the scattering blade 300 may include a sleeve 320 and blades 310. The sleeve 320 is rotatably sleeved on the mounting shaft 500. The outer peripheral wall of the sleeve 320 is surrounded by a plurality of blades 310, and the blades 310 are connected to the sleeve 320. As a result, the blades 310 rotate after being driven by the liquid, thereby driving the sleeve 320 to rotate about the mounting shaft 500, thereby achieving the installation and free rotation of the scattering blade 300. The structure is simple and easy to manufacture. The limiting portions provided on the sleeve 320, such as the first limiting portion 510 and the second limiting portion 520, are used to abut the sleeve 320. For example, the first limiting plate is located on the side of the sleeve 320 facing away from the liquid outlet 220, and the second limiting portion 520 is located on the side of the sleeve 320 facing the liquid outlet 220, and is used to limit the sleeve 320, thereby effectively limiting the position of the scattering blade 300.

[0044] refer to Figure 1 In the embodiment of the present application, the diverter pipe 200 is extended along the second direction, which is perpendicular to the first direction. The diverter pipe 200 is provided with a plurality of liquid outlet channels 210, and adjacent liquid outlet channels 210 are spaced apart. Each liquid outlet channel 210 is provided with a dispersing blade 300. Thus, the diverter pipe 200 can discharge liquid through the plurality of liquid outlet channels 210, thereby expanding the range of liquid distribution and improving the uniformity as a whole. It is suitable for crossing the belt from above to evenly spray the material on the belt. It can be understood that each liquid outlet channel 210 can be provided with a dispersing blade 300, an installation shaft 500, and a discharge tray as described above to play the above-mentioned role. Furthermore, the required number of liquid outlet channels 210 can be reasonably configured on the diverter pipe 200 according to the required distribution length and spacing to meet the actual required liquid spraying effect.

[0045] Among them, the feeding pipe 100 can be extended along the first direction and connected to the side of the diversion pipe 200 away from the liquid outlet 220. Therefore, when in use, the feeding pipe 100 can be placed vertically along the first direction, with the first direction pointing downward, thereby forming a downstream feeding method. The liquid input from the feeding pipe 100 into the diversion pipe 200 can flow to the liquid outlet channel 210, and the liquid can be smoothly pressurized and dispersed by the breaking blades 300 and further pressurized and sprinkled out through the discharge cover 400.

[0046] refer to Figure 1 In some embodiments of the present application, the liquid feeding device may further include a flow rate controller 110. The flow rate controller 110 is connected to the feeding pipe 100 and is used to regulate the flow rate of the liquid delivered from the feeding pipe 100 to the diversion pipe 200. This controller can be adapted to accommodate different liquid additive dosages and adjust the flow rate as required to ensure uniform distribution of the liquid additive on the production raw materials. The flow rate controller 110 can be a knob valve, butterfly valve, ball valve, or the like, and controls the liquid flow rate by changing the cross-sectional area of ​​the liquid flowing within the feeding pipe 100.

[0047] The present application also provides a cement production device, including a conveying device and the above-mentioned liquid feeding device (refer to Figures 1 to 4 ), a conveying device is used to transport raw materials, and a diverter pipe 200 is horizontally arranged above the conveying device for dispensing liquid additives onto the raw materials on the conveying device. Using the feeding device of the present application to dispense liquid additives onto the raw materials improves the uniformity of the liquid additive discharge, thereby facilitating uniform mixing of the raw materials and the liquid additive, thereby improving the quality and stability of cement processing.

[0048] The conveying device may be a conveyor belt, and the raw materials are arranged on the surface of the belt for conveying. A liquid feeding device with multiple liquid outlet channels 210 may be used, and the diverter pipe 200 is placed across the belt, perpendicular to the conveying direction of the belt. Thus, the relative movement of the diverter pipe 200 and the belt allows the liquid additives spilled from the liquid outlet 220 of the diverter pipe 200 to be evenly distributed on the raw materials, effectively ensuring uniform mixing of the additives and the raw materials, reducing fluctuations in cement quality, and achieving efficient cement liquid additive feeding, effectively solving the problem of increased belt return material affecting cement quality and the production site environment.

[0049] The liquid feeding device of the embodiments of the present application has a simple and easy structure. In some embodiments, the liquid feeding device equipped with a liquid flow rate controller 110 can adjust the flow rate of the cement liquid additive, and cooperate with the dispersing blades 300, the discharge cover 400, etc. to realize liquid pressurization and dispersion. It can adapt to different dosage conditions, and the cement liquid additive can still be effectively dispersed, thereby being evenly mixed with the production raw materials.

[0050] The following introduces some specific application examples to illustrate the specific implementation and beneficial effects of the liquid feeding device and cement production equipment of the embodiments of the present application:

[0051] Example 1:

[0052] A liquid dosing device was used to discharge cement liquid additives, with a cement output of 150 tons / hour and a cement additive dosage of 0.015 tons / hour. During a 24-hour trial run, the discharged cement liquid additives were slender, uniform, and effectively mixed with the raw materials on the conveyor belt at the dosing point. Cement samples were taken every two hours, and the test results showed that the performance of the cement samples fluctuated steadily within 1%, significantly reducing fluctuations. In comparison, using the old device, which dispensed the cement directly onto the conveyor through a hose, the performance fluctuations of the cement samples were only 4%. With the liquid dosing device, the required return material cleaning on the conveyor belt at the dosing point was reduced from two bucket trucks per eight-hour shift to one bucket truck per twenty-four hours, an average of five bucket trucks per day, significantly reducing the cleaning workload for employees and effectively ensuring a clean and tidy production environment. The bucket trucks measured 80cm*80cm*48cm and had a volume of 0.15m³. These results demonstrate that the use of this cement liquid additive can reduce cement quality fluctuations, effectively maintain a clean and tidy production environment, and reduce employee cleaning workload.

[0053] Example 2:

[0054] A liquid dosing device was used to discharge cement liquid additives, achieving a cement output of 120 tons / hour and a cement liquid additive dosage of 0.012 tons / hour. During a 48-hour trial run, the discharged cement liquid additive was slender, uniform, and effectively mixed with the raw materials on the conveyor at the feed point. Cement samples were taken every two hours, and test results showed a stable performance fluctuation of 0.5%, compared to a fluctuation of 5% using the old device. With the liquid dosing device, the required return material on the conveyor at the feed point was reduced from 1.5 bucket cars per 8-hour shift to 3 bucket cars per 48 hours, an average of 3 bucket cars per day, significantly reducing employee cleaning workload and effectively ensuring a clean and tidy production environment. The bucket car dimensions were 80cm*80cm*48cm, with a volume of 0.15m³. These results demonstrate that the use of this cement liquid additive reduces cement quality fluctuations, effectively maintains a clean and tidy production environment, and reduces employee cleaning workload.

[0055] The embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. Liquid feeding device, characterized in that, include: A feeding pipe having a main flow channel inside; A shunt pipe is connected to the feeding pipe, wherein a shunt channel and a liquid outlet channel are provided inside the shunt pipe, wherein the shunt channel communicates with the main channel and the liquid outlet channel, and one end of the liquid outlet channel passes through the shunt pipe along a first direction to form a liquid outlet; The scattering blades are rotatably disposed in the liquid outlet channel and located on the inner side of the liquid outlet. The scattering blades are driven to rotate by the liquid flowing along the first direction.

2. The liquid feeding device according to claim 1, characterized in that: The liquid feeding device further comprises a discharge cover, which covers the liquid outlet and is connected to the diversion pipe, and a plurality of through holes are distributed on the discharge cover.

3. The liquid feeding device according to claim 2, characterized in that: The diameter of the through hole ranges from 0.5 mm to 2 mm.

4. The liquid feeding device according to claim 2, characterized in that: The liquid feeding device further comprises a mounting shaft extending along a first direction, the mounting shaft being located in the liquid outlet channel, the mounting shaft being connected to the discharge cover or the diversion pipe, and the scattering blade being rotatably connected to the mounting shaft.

5. The liquid feeding device according to claim 4, characterized in that: The mounting shaft is provided with a limiting portion, which is located on a side of the scattering blade facing the liquid outlet and is used to limit the distance between the scattering blade and the discharge cover.

6. The liquid feeding device according to claim 4, characterized in that: The scattering blades include a shaft sleeve and blades. The shaft sleeve is rotatably sleeved on the mounting shaft. A plurality of blades are wound around the outer peripheral wall of the shaft sleeve. The blades are connected to the shaft sleeve.

7. The liquid feeding device according to claim 1, characterized in that: The diverter pipe is extended along a second direction, which is perpendicular to the first direction. The diverter pipe is provided with a plurality of liquid outlet channels, which are spaced apart from each other, and each liquid outlet channel is provided with a scattering blade.

8. The liquid feeding device according to claim 7, characterized in that: The feeding pipe is extended along the first direction and is connected to a side of the diversion pipe away from the liquid outlet.

9. The liquid feeding device according to claim 1, characterized in that: The liquid feeding device further comprises a flow rate controller, which is connected to the feeding pipe and is used to adjust the flow rate of the liquid transported from the feeding pipe to the diversion pipe.

10. Cement production equipment, characterized in that It comprises a conveying device and a liquid feeding device according to any one of claims 1 to 9, wherein the conveying device is used to convey raw materials, and the diversion pipe is horizontally arranged above the conveying device to sprinkle liquid additives onto the raw materials on the conveying device.

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