Wet material mixing system
By combining the spiral mixer and the compressed air injection module, the problems of mixing dead zones and stratification in wet material mixing are solved, achieving efficient and uniform mixing and improving mixing efficiency and product quality.
Patent Information
- Application Number
- CN202511463324.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2025-12-09
AI Technical Summary
Existing wet material mixing devices rely on a single shear force, which can easily cause materials to stick to the wall or agglomerate, forming mixing dead zones. This makes it impossible to achieve efficient and uniform mixing of multiple wet materials, and can easily lead to material stratification or clumping.
By employing a spiral mixer combined with a compressed air injection module, the efficient and uniform mixing of wet materials is achieved through the synergistic effect of the shear force of multi-layer spiral blades and dynamic vortex, in conjunction with an intelligent control module.
It achieves efficient and uniform mixing of various wet materials, avoids mixing dead zones and stratification, and improves mixing efficiency and product quality stability.
Smart Images
Figure CN121082142A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wet material mixing technology, and specifically to a wet material mixing system. Background Technology
[0002] In industries such as chemicals and building materials, wet material mixing is a crucial step in the production process. Its purpose is to uniformly mix various wet materials in a predetermined ratio to ensure the performance stability of the final product. Wet materials typically have high viscosity, and their mixing effectiveness directly impacts product quality and production efficiency.
[0003] Existing wet material mixing devices use motors to drive the mixing paddles (such as paddle, ribbon, or planetary types) to rotate, and utilize the shearing force and propulsion effect generated by the contact between the paddle blades and the materials to achieve mixing.
[0004] However, mechanical mixing equipment relies on a single shear force, which can easily cause materials to stick to the wall or agglomerate, forming mixing dead zones and leading to local component deviations. It can also cause problems such as material stratification or clumping, making it impossible to achieve efficient and uniform mixing of various wet materials. Summary of the Invention
[0005] To address this, embodiments of the present invention provide a wet material mixing system to solve the problems in the prior art where mechanical stirring equipment relies on a single shear force, easily causing material to adhere to the wall or agglomerate, forming mixing dead zones, resulting in local component deviations; and easily causing material stratification or clumping, thus failing to achieve efficient and uniform mixing of various wet materials.
[0006] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions: A wet material mixing system comprises: a feeding module including at least two independent metering units, each metering unit corresponding to a wet material; a spiral mixer whose inlet end is connected to the outlet end of the feeding module; the spiral mixer being used to mix and stir the incoming wet material; a compressed air injection module disposed inside the spiral mixer, the compressed air injection module being used to inject compressed air into the spiral mixer to form a dynamic vortex; and an intelligent control module electrically connected to the metering units, the spiral mixer, and the compressed air injection module, respectively.
[0007] According to one embodiment of the present invention, the metering unit is a metering pump or valve system used to control the input flow rate of the corresponding wet material to adjust the mixing ratio of each component.
[0008] According to one embodiment of the present invention, the spiral mixer includes multiple spiral blades and a drive motor; the multiple spiral blades are distributed along the axial direction of the spiral mixer, and the spiral directions of adjacent blades are opposite; the drive motor is used to drive the spiral blades to rotate at high speed, thereby generating shear force and moving the wet material along the axial direction of the spiral mixer.
[0009] According to one embodiment of the present invention, the compressed air injection module includes an annular pipe and a nozzle; the annular pipe is arranged along the axial direction of the spiral mixer, and the nozzle is uniformly arranged along the circumference of the annular pipe. The nozzle is used to inject compressed air into the spiral mixer to form a dynamic vortex; wherein the annular pipe is connected to an air supply system, the air supply system is used to adjust the compressed air parameters of the annular pipe, and the air supply system is electrically connected to the intelligent control module.
[0010] According to one embodiment of the present invention, the nozzles are arranged in a node array; wherein the node array arrangement means that multiple nodes are arranged at a preset interval along the axial direction of the spiral mixer, and at least three nozzles are evenly distributed circumferentially at each node, the orientation of each circumferential nozzle is precisely defined, and the nozzles on adjacent nodes do not overlap in the circumferential position, and the nozzles at each node are connected.
[0011] According to one embodiment of the present invention, the plurality of nozzles at the same node are oriented differently, wherein the spray direction of at least one nozzle is at a 30° angle to the tangential direction of the multi-layered spiral blade, the spray direction of at least one nozzle is at a 45° angle to the tangential direction of the multi-layered spiral blade, and the spray direction of at least one nozzle is at a 60° angle to the tangential direction of the multi-layered spiral blade.
[0012] According to one embodiment of the present invention, a premixing chamber is further included, wherein the feed end of the premixing chamber is connected to the discharge end of the spiral mixer, and at least two guide plates are provided inside the premixing chamber. The guide plates are staggered along the length of the chamber to form a tortuous mixing path, and the surface of the guide plates is provided with a convex ridge structure, which is used to enhance the turbulent disturbance of the wet material.
[0013] According to one embodiment of the present invention, the device further includes a terminal generating device and a pressure sensor. The terminal generating device is connected to the outlet of the premixing chamber and is used to receive wet material that has been fully homogenized by the premixing chamber. The pressure sensor is installed inside the terminal generating device and is used to monitor the terminal material level and feed the signal back to the intelligent control module.
[0014] According to one embodiment of the present invention, the intelligent control module includes a PLC controller and an HMI (human-machine interface); the PLC controller is electrically connected to the feeding module, the spiral mixer, the compressed air injection module and the pressure sensor respectively, and can adjust the wet material mixing ratio, the compressed air pressure and the rotation speed of the multi-layer spiral blades in real time; the HMI is used to display system operating parameters and supports manual input of control parameters.
[0015] According to one embodiment of the present invention, it further includes an abnormal alarm unit, which will trigger an alarm function when the wet material flow deviation exceeds a preset threshold, the compressed air pressure is abnormal, or the terminal material level overflows.
[0016] The embodiments of the present invention have the following advantages: Under the control of the intelligent control module, the present invention feeds wet materials into the spiral mixer at a set ratio through the feeding module, and then the mechanical shearing of the spiral mixer breaks up the agglomerates. Subsequently, the dynamic vortex of the compressed air injection module enhances the disturbance, thereby achieving efficient and uniform mixing of various wet materials. Attached Figure Description
[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.
[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.
[0019] Figure 1 This is a schematic diagram of the intelligent control system module; Figure 2 This is a schematic diagram of a preferred embodiment of a wet material mixing system provided by the present invention; Figure 3 This is a schematic diagram of the feeding module; Figure 4 This is a schematic diagram of a ring-shaped pipe installation. Figure 5 This is a schematic diagram of nozzle installation. Figure 6 This is a schematic diagram of the terminal generator installation.
[0020] In the picture: 1. Feeding module; 11. Metering unit; 2. Spiral mixer; 21. Multi-layer spiral blades; 22. Drive motor; 3. Compressed air injection module; 31. Annular pipe; 32. Nozzle; 4. Intelligent control module; 41. PLC controller; 42. HMI (Human-Machine Interface); 5. Premixing chamber; 51. Guide plate; 52. Rib structure; 6. Terminal generator; 61. Pressure sensor; 7. Air supply system; 8. Abnormal alarm unit. Detailed Implementation
[0021] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] like Figures 1 to 6 As shown, a wet material mixing system includes a feeding module 1, a spiral mixer 2, a compressed air injection module 3, and an intelligent control module 4; The discharge end of the feeding module 1 is connected to the feed end of the spiral mixer 2. The feeding module 1 is used to feed various wet materials into the spiral mixer 2 according to a preset ratio. The spiral mixer 2 is used for preliminary crushing and homogenization of wet materials; The compressed air injection module 3 is installed inside the spiral mixer 2. The compressed air injection module 3 is used to inject compressed air into the mixer to form a dynamic vortex. The intelligent control module 4 is electrically connected to the feeding module 1, the spiral mixer 2, and the compressed air injection module 3.
[0023] This invention aims to solve the problems of low mixing efficiency, high energy consumption, and easy material stratification or agglomeration in traditional mixing equipment (such as mechanical agitators) during wet material mixing processes in the chemical, building materials and other fields. Especially for wet materials with high viscosity or complex composition, this invention achieves uniform mixing by combining mechanical agitation with dynamic vortex flow.
[0024] Specifically, wet material is first fed into the spiral mixer 2 through the feeding module 1 according to a set ratio. Then, the mechanical shearing of the spiral mixer 2 breaks up the agglomerates. Subsequently, the dynamic eddy current of the compressed air injection module 3 enhances the disturbance. Each module forms a closed-loop feedback through the intelligent control module 4 to ensure that the system maintains stable operation under dynamic conditions.
[0025] The following is a preferred embodiment of a feeding module 1: the feeding module 1 includes at least two independent metering units 11, each metering unit 11 corresponding to a wet material; The metering unit 11 is a metering pump or valve system used to control the input flow rate of the corresponding wet material to adjust the mixing ratio of each component.
[0026] Taking the mixing of two-component wet materials as an example, a first metering unit 11 (corresponding to material A) and a second metering unit 11 (corresponding to material B) are set up. The inlet of each unit is connected to a storage tank, and the outlet is connected to the feed end of the spiral mixer 2 through a pipeline. The output of the metering unit 11 is adjusted by the flow parameters preset by the intelligent control module 4. The metering pump controls the discharge by changing the motor speed, and the valve system controls the flow by adjusting the valve opening.
[0027] The following is a preferred embodiment of a spiral mixer 2: the spiral mixer 2 includes multi-layer spiral blades 21 and a drive motor 22; The multi-layered spiral blades 21 are distributed along the axial direction of the spiral mixer 2, and the rotation directions of adjacent blades are opposite; the drive motor 22 is used to drive the spiral blades to rotate at high speed, and while generating shear force, it drives the wet material to move along the axial direction of the spiral mixer 2.
[0028] When the drive motor 22 drives the spiral blades to rotate at high speed, the blades exert a dual effect on the wet material: firstly, radial shear force, which breaks up material agglomerates by utilizing the gap between the blades and the cavity; secondly, axial thrust, which causes the material to reciprocate and deflect during its forward movement through blades with opposite rotation directions, extending the mixing path. By setting up multiple layers of blades with opposite rotation directions, the material forms an alternating "compression-expansion" flow during axial movement, laying the foundation for subsequent homogenization.
[0029] The following is a preferred embodiment of a compressed air injection module 3: the compressed air injection module 3 includes an annular pipe 31 and a nozzle 32; The annular pipe 31 is arranged along the axial direction of the spiral mixer 2, and the nozzles 32 are evenly arranged around the annular pipe 31. The nozzles 32 are used to inject compressed air into the spiral mixer 2 to form a dynamic vortex. The annular pipe 31 is connected to the air supply system 7, which is used to adjust the compressed air parameters of the annular pipe 31. The air supply system 7 is electrically connected to the intelligent control module 4.
[0030] When the wet material enters the spiral mixer 2 and is initially agitated by the spiral blades, the air compressor of the air supply system 7 generates compressed air, which is adjusted to a preset pressure by the pressure regulating valve and distributed to each nozzle 32 through the annular pipe 31. The nozzles 32 inject the compressed air into the mixing chamber at high speed. The circumferentially evenly distributed nozzles 32 form multiple airflows, which interact with the shear force generated by the rotation of the spiral blades: the airflow component along the tangential direction of the blades pushes the wet material to follow the rotation of the blades, enhancing the mixing intensity; the radial airflow component breaks the annular flow inertia of the wet material, forming local vortices, which disperses the agglomerated wet material particles.
[0031] The nozzles 32 are arranged in a node array; The node array arrangement refers to setting multiple nodes along the axial direction of the spiral mixer 2 at a preset interval. At least three nozzles 32 are evenly distributed circumferentially at each node. The orientation of each circumferential nozzle 32 is precisely defined, and the nozzles 32 on adjacent nodes do not overlap in the circumferential position. The nozzles 32 at each node are connected.
[0032] The node array arrangement is based on the axial length of the spiral mixer 2. Through multi-node layered design and circumferential staggered distribution, it achieves all-round coverage of compressed air injection. Each node is equipped with an annular pipe 31, which is connected to the same air supply system 7. Each annular pipe 31 is connected to the main pipe and is equipped with a sub-control valve. The sub-control valve is connected to the intelligent control module 4 points and can independently adjust the air injection frequency of the corresponding annular pipe 31.
[0033] The multiple nozzles 32 at the same node are oriented differently, wherein the spray direction of at least one nozzle 32 is at a 30° angle to the tangent direction of the multi-layer spiral blade 21, the spray direction of at least one nozzle 32 is at a 45° angle to the tangent direction of the multi-layer spiral blade 21, and the spray direction of at least one nozzle 32 is at a 60° angle to the tangent direction of the multi-layer spiral blade 21.
[0034] When compressed air is injected through nozzles 32 at different angles, the resulting multidimensional airflow field works synergistically with the mechanical stirring of the spiral blades, specifically manifested as follows: The 30° angle nozzle 32, due to its small angle (close to the tangential direction of the blade), generates a strong axial thrust on the wet material through the airflow, which can accelerate the movement of the wet material along the axial direction of the mixer. At the same time, it forms an "air film" on the blade surface, reducing the adhesion of the wet material to the blade. For example, for wet materials with a high fiber content, this angled airflow can effectively strip the fiber bundles wrapped around the blade.
[0035] The 45° angle nozzle 32, with its equal-angle airflow forming a balanced thrust in the radial and axial directions, can penetrate the surface of the wet material and directly act on the internal agglomerates.
[0036] The 60° angle nozzle 32 creates a "reverse impact" effect with its large angle, generating a counterforce against the direction of blade rotation and prolonging the residence time of wet material in this node area. At the same time, the reverse airflow forms a circulation near the inner wall of the mixing chamber, re-entraining the wet material accumulated at the edge into the central mixing zone and eliminating the mixing dead zones caused by the "wall effect".
[0037] Synergistic effect: The airflow at three angles forms a "push-break-recirculate" cycle in the node region, allowing the wet material to complete a full micro-mixing cycle when passing through a single node. Combined with the shearing force of the multi-layer spiral blades 21, the mixing uniformity of the wet material is improved.
[0038] It also includes a premixing chamber 5, the feed end of which is connected to the discharge end of the spiral mixer 2. At least two guide plates 51 are provided inside the premixing chamber 5. The guide plates 51 are staggered along the length of the chamber to form a tortuous mixing path. The surface of the guide plates 51 is provided with a convex ridge structure 52, which is used to enhance the turbulent disturbance of the wet material.
[0039] After the initial spiral shearing and airflow disturbance, the wet material has achieved preliminary homogenization, but for scenarios requiring extremely high mixing accuracy, uneven component distribution may still exist in some areas.
[0040] By using guide plates 51 inside the premixing chamber 5, the wet material is forced to continuously change its flow direction. During the turning process, the wet material undergoes stratification shearing due to inertia. The flow velocity of the wet material near the guide plate 51 decreases, while the flow velocity of the wet material far from the guide plate 51 increases, forming a velocity gradient that promotes mixing of the wet material in different regions. At the same time, when the wet material flows through the convex ridge structure 52 on the surface of the guide plate 51, a local vortex is formed behind the convex ridge structure 52. The vortex size matches the size of the convex ridge, which increases the flow resistance of the wet material and prolongs the residence time in the chamber, providing sufficient time for the elimination of local differences.
[0041] It also includes a terminal generator 6 and a pressure sensor 61; The terminal generating device 6 is connected to the outlet of the premixing chamber 5. The terminal generating device 6 is used to receive the wet material that has been fully homogenized by the premixing chamber 5. The pressure sensor 61 is installed inside the terminal generating device 6 to monitor the terminal material level and feed the signal back to the intelligent control module 4.
[0042] The terminal generator 6 is a storage cavity with an insulation layer and a discharge valve at the bottom. The pressure sensor 61 is installed on the top of the cavity and transmits the signal to the intelligent control module 4 through a pressure transmitter.
[0043] Pressure sensor 61 monitors the static pressure corresponding to the material level in the chamber and provides real-time feedback on the material inventory. When the material level reaches the upper limit, the sensor outputs a signal to trigger the intelligent control module 4 to reduce the feed rate; when the material level is below the lower limit, the feed rate is increased to achieve supply and demand balance.
[0044] The intelligent control module 4 includes a PLC controller 41 and an HMI human-machine interface 42. The PLC controller 41 is electrically connected to the feeding module 1, the spiral mixer 2, the compressed air injection module 3, and the pressure sensor 61, and can adjust the wet material mixing ratio, compressed air pressure, and the rotation speed of the multi-layer spiral blades 21 in real time. The HMI human-machine interface 42 is used to display system operating parameters and supports manual input of control parameters.
[0045] The PLC controller 41 collects the operating parameters of each module (flow rate, speed, pressure, etc.), compares them with preset thresholds, and outputs control commands. The HMI interface displays multiple parameters such as mixing ratio and energy consumption in real time, and supports manual input of multiple sets of process recipes.
[0046] Regarding the adjustment of the wet material mixing ratio, the target mixing ratio is input through the HMI human-machine interface 42, and the PLC controller 41 automatically calculates the target flow rate of each metering unit 11 and precisely controls the flow rate by adjusting the frequency of the metering pump (or the valve opening).
[0047] Regarding compressed air pressure regulation, the PLC controller 41 automatically matches the initial air pressure according to the total flow rate of the wet material; when the pressure sensor 61 detects a deviation between the actual pressure and the target value, the PLC controller 41 controls the opening of the pressure regulating valve and performs differentiated adjustments according to the working status of each nozzle 32 in the node array.
[0048] Regarding the speed control of the multi-layer spiral blade 21, a correlation model between the speed and the viscosity of the wet material is established (preset via HMI). When the flow combination of the feeding module 1 changes, the PLC automatically increases the speed. It also includes an abnormal alarm unit 8, which consists of a signal detection module, an alarm actuator, and a linkage control module. When the wet material flow deviation exceeds a preset threshold, the compressed air pressure is abnormal, or the terminal material level overflows, the abnormal alarm unit 8 will trigger an alarm function.
[0049] The signal detection module is electrically connected to each sensor in the system, collects parameters in real time and compares them with preset thresholds; including the deviation between the actual flow rate and the target flow rate of a single metering unit 11; the total flow rate fluctuation of multiple metering units 11; the pressure of the main pipeline; the pressure deviation of a single node in the node array; and the material level height of the terminal generating device 6.
[0050] The alarm actuator includes: The audible and visual alarm is installed on the top of the control cabinet. When an alarm is triggered, it emits a buzzer and a red warning light flashes at the same time, making it clearly identifiable within a range of 30 meters.
[0051] When an alarm is triggered, the HMI alarm interface automatically pops up an alarm window, displaying the anomaly type, occurrence time, current value, and suggested handling solution.
[0052] The remote alarm module sends alarm signals to the workshop management system via a bus. Linkage control module: Integrated with PLC controller 41, it executes different control strategies according to the level of abnormality: Level 1 alarm: only triggers audible and visual alarms, the system continues to run, and the PLC attempts to adjust automatically.
[0053] Level 2 alarm: The audible and visual alarm continues, the PLC reduces the power of relevant modules, and the system operates under reduced load.
[0054] Level 3 alarm: Immediately triggers audible and visual alarms and system shutdown, PLC cuts off power to all modules, spiral mixer 2 stops rotating, and feed valve automatically closes to prevent continuous material overflow or equipment damage from idling.
[0055] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.
Claims
1. A wet material mixing system, characterized in that, have; The feeding module (1) includes at least two independent metering units (11), each metering unit (11) corresponding to a type of wet material; The spiral mixer (2) has its feed end connected to the discharge end of the feed module (1); the spiral mixer is used to mix and stir the incoming wet material. A compressed air injection module (3) is disposed inside the spiral mixer (2). The compressed air injection module (3) is used to inject compressed air into the spiral mixer (2) to form a dynamic vortex. The intelligent control module (4) is electrically connected to the metering unit (11), the spiral mixer (2), and the compressed air injection module (3), respectively.
2. The wet material mixing system according to claim 1, characterized in that, The metering unit (11) is a metering pump or valve system used to control the input flow rate of the corresponding wet material to adjust the mixing ratio of each component.
3. The wet material mixing system according to claim 1, characterized in that, The spiral mixer (2) includes multi-layer spiral blades (21) and a drive motor (22); The multi-layered helical blades (21) are distributed along the axial direction of the helical mixer (2), and the helical directions of adjacent blades are opposite. The drive motor (22) is used to drive the spiral blades to rotate at high speed, and while generating shear force, it drives the wet material to move along the axial direction of the spiral mixer (2).
4. A wet material mixing system according to claim 3, characterized in that, The compressed air injection module (3) includes an annular pipe (31) and a nozzle (32); the annular pipe (31) is arranged along the axial direction of the spiral mixer (2), and the nozzle (32) is evenly arranged circumferentially along the annular pipe (31). The nozzle (32) is used to inject compressed air into the spiral mixer (2) to form a dynamic vortex. The annular pipe (31) is connected to the air supply system (7), which is used to adjust the compressed air parameters of the annular pipe (31). The air supply system (7) is electrically connected to the intelligent control module (4).
5. A wet material mixing system according to claim 4, characterized in that, The nozzles (32) are arranged in a node array; The node array arrangement refers to setting multiple nodes along the axial direction of the spiral mixer (2) at a preset interval. At least three nozzles (32) are evenly distributed in the circumference at each node. The orientation of each circumferential nozzle (32) is precisely defined, and the nozzles (32) on adjacent nodes do not overlap in the circumferential position. The nozzles (32) at each node are connected.
6. A wet material mixing system according to claim 5, characterized in that, The multiple nozzles (32) at the same node are oriented differently, wherein the spray direction of at least one nozzle (32) is at a 30° angle to the tangent direction of the multi-layer spiral blade (21), the spray direction of at least one nozzle (32) is at a 45° angle to the tangent direction of the multi-layer spiral blade (21), and the spray direction of at least one nozzle (32) is at a 60° angle to the tangent direction of the multi-layer spiral blade (21).
7. A wet material mixing system according to claim 1, characterized in that, It also includes a premixing chamber (5), the feed end of which is connected to the discharge end of the spiral mixer (2). At least two guide plates (51) are provided inside the premixing chamber (5). The guide plates (51) are staggered along the length of the chamber to form a tortuous mixing path. The surface of the guide plates (51) is provided with a convex ridge structure (52). The convex ridge structure (52) is used to enhance the turbulent disturbance of the wet material.
8. A wet material mixing system according to claim 7, characterized in that, It also includes a terminal generating device (6) and a pressure sensor (61). The terminal generating device (6) is connected to the outlet of the premixing chamber (5). The terminal generating device (6) is used to receive wet material that has been fully homogenized by the premixing chamber (5). The pressure sensor (61) is installed inside the terminal generating device (6) to monitor the terminal material level and feed the signal back to the intelligent control module (4).
9. A wet material mixing system according to claim 8, characterized in that, The intelligent control module (4) includes a PLC controller (41) and an HMI human-machine interface (42). The PLC controller (41) is electrically connected to the feeding module (1), the spiral mixer (2), the compressed air injection module (3) and the pressure sensor (61) respectively, and can adjust the wet material mixing ratio, compressed air pressure and multi-layer spiral blade (21) speed in real time; the HMI human-machine interface (42) is used to display system operating parameters and supports manual input of control parameters.
10. A wet material mixing system according to claim 9, characterized in that, It also includes an abnormal alarm unit (8), which will trigger an alarm function when the wet material flow deviation exceeds the preset threshold, the compressed air pressure is abnormal, or the terminal material level overflows.