Powder mixing equipment

Abstract

The invention discloses powder mixing and stirring equipment. The equipment comprises a frame assembly; the stirring barrel is installed on the frame assembly, a material stirring cavity is formed in an inner cavity of the stirring barrel, and a discharging opening communicated with the material stirring cavity is formed in the side wall of the stirring barrel; a stirring part of the stirring device is arranged in the material stirring cavity; the power output end of the transmission assembly is in transmission connection with the stirring device, and the power input end of the transmission assembly is in transmission connection with a driving part. A pressurizing spraying device and a progressive increase type specially-made paddle are used in cooperation, the mixing uniformity of flour and floccules is improved, the automation degree is high through PLC control, the risk of flour leakage and liquid leakage is reduced through multiple sealing structures, the mixing uniformity of the flour and floccules is improved, and the caking phenomenon is reduced; a sealed structural design prevents materials from splashing and is safer and more efficient; leakage of materials and solutions is avoided, cleanliness of the materials is guaranteed, and environmental pollution is reduced.

Description

Technical Field

[0001] This invention relates to the field of mixing equipment technology, and specifically to a powder mixing equipment. Background Technology

[0002] In technical scenarios such as flour mixing, where powder and solution need to be mixed, existing technologies mostly use powder mixing equipment for mixing.

[0003] Taking noodle mixing machines as an example, existing powder mixing equipment has the following technical problems: When adding solution to existing noodle mixing machines, the solution either flows in by gravity or is added manually. When the solution flows in by gravity, it is impossible to accurately control the timing and dosage of the solution addition. When adding solution manually, the lid needs to be opened during the mixing process, which is very dangerous. Flour will leak out, causing dust pollution and harm to the environment and personnel. The equipment is running at high speed, which can easily cause injury to personnel, and the safety of the user cannot be guaranteed. Existing noodle mixers are basically unable to meet the requirements for high mixing uniformity. The existing blades are basically symmetrical double blades, which have low mixing efficiency and poor mixing uniformity. In order to improve the mixing uniformity, the mixing time is lengthened. However, long-term mixing will have a certain impact on the dough. Existing noodle mixing machines have a low level of automation and high labor costs, making continuous production virtually impossible. The noodle mixing machines cannot complete the processes of feeding, premixing, adding liquid, stirring, and unloading in a very short time, requiring a large amount of manual assistance. The existing noodle mixing machine has a simple sealing at the discharge port, which leads to powder and liquid leakage after long-term operation. Summary of the Invention

[0004] Therefore, embodiments of the present invention provide a powder mixing device to solve at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions: A powder mixing device, comprising: Framework components; A mixing tank is mounted on the frame assembly. The inner cavity of the mixing tank forms a material mixing chamber, and the side wall of the mixing tank has a discharge port that communicates with the material mixing chamber. A stirring device, wherein the stirring element of the stirring device is disposed inside the material stirring chamber; A transmission assembly, wherein the power output end of the transmission assembly is connected to the stirring device, and the power input end of the transmission assembly is connected to the driving component.

[0006] In some embodiments, the powder mixing equipment further includes a discharge assembly installed at the discharge port of the mixing tank, the discharge assembly comprising: The unloading hopper has an unloading inlet and an unloading outlet on opposite side walls. The unloading inlet is connected to the outlet so that the unloading hopper is connected to the material mixing chamber. A push rod is provided, and a discharge valve disc is detachably installed at the discharge outlet of the discharge bin body. One end of the push rod is welded to the discharge valve disc. A push rod mounting base is provided, on which a discharge cylinder is mounted. The other end of the push rod is connected to the discharge cylinder. The discharge valve flap is closed or opened by the discharge cylinder. A material-blocking scraper is installed on the unloading valve disc and moves synchronously with the unloading valve disc. A material cleaning component is installed in the unloading hopper and discharges material from the unloading port of the unloading hopper when it is started.

[0007] In some embodiments, the cleaning assembly includes: The material cleaning cylinder has its cylinder barrel installed in the unloading bin body, and the end of its cylinder rod away from the cylinder barrel is located inside the unloading bin body; A cleaning scraper is installed on the end of the cleaning cylinder rod away from the cylinder barrel and moves within the unloading bin under the drive of the cleaning cylinder.

[0008] In some embodiments, the unloading assembly further includes: A cylinder cover is mounted on the push rod mounting base, and the unloading cylinder is disposed inside the cylinder cover; A blowing air pipe is installed on the push rod mounting base, and the air outlet of the blowing air pipe is located inside the unloading bin. The hopper cover is detachably installed on the upper part of the unloading hopper via a quick-opening handwheel.

[0009] In some embodiments, the powder mixing equipment further includes an adjustable pressurized spraying assembly, the adjustable pressurized spraying assembly comprising: A sight glass, which is fitted onto the lid of the mixing tank; A solution main pipeline, one end of which is connected to a solution source; A solution distribution pipeline, one end of which is detachably connected to the main solution pipeline via a clamp; A spray pipe, one end of which is connected to the other end of the solution distribution pipe, the other end of which extends into the stirring chamber, and a nozzle is installed at the end of the spray pipe located in the stirring chamber. A feed valve is installed on the feed pipe that passes through the barrel cover to control the opening and closing of the feed pipe; A cloth bag respirator, which is mounted on the bucket lid.

[0010] In some embodiments, the stirring element includes: A stirring shaft is connected to the power output end of the transmission assembly. Multiple blades, each blade is mounted on the stirring shaft, and at least two of the blades are mounted at different angles on the stirring shaft.

[0011] In some embodiments, the plurality of blades includes: The first blade is installed at an angle of 30° to the stirring shaft; The second blade has a surface that is 90° to the surface of the first blade, and the installation angle between the second blade and the stirring shaft is 30°. The third blade has a surface that is 90° to the surface of the second blade, and the installation angle between the third blade and the stirring shaft is 30°. The fourth blade has a surface that forms a 90° angle with the surface of the third blade, and the installation angle between the fourth blade and the stirring shaft is 5°.

[0012] In some embodiments, the transmission assembly includes: A pulley is mounted on the stirring shaft and is connected to the output shaft of the drive unit via a belt. A sealing structure is installed on the stirring shaft to achieve a seal between the stirring shaft and the bottom of the container.

[0013] In some embodiments, the sealing structure includes: The mounting base has a skeleton oil seal installed at its upper end and a bearing mounting seat installed at its lower end. The outer periphery of the mounting base is provided with an O-ring and an oil injection nozzle, and the interior is equipped with an air seal chamber seat. O-ring, wherein the O-ring is fitted into the O-groove; An air tube rod passes through the mounting base and is assembled and connected to the air seal chamber seat; A bearing mounting base, wherein an angular contact bearing is fitted at the upper end of the bearing mounting base and two deep groove ball bearings are fitted at the lower end; The upper sealing seat is installed on the stirring shaft and has a skeleton oil seal inside. The upper sealing seat is installed above the bearing mounting seat and presses against the angular contact bearing. The upper sealing seat is sealed to the air seal cavity seat through a combined sealing ring. The lower sealing seat is installed on the stirring shaft and has a skeleton oil seal inside. The lower sealing seat is installed below the bearing mounting seat and presses against the deep groove ball bearing.

[0014] In some embodiments, the powder mixing equipment further includes: The control system controls the opening of the butterfly valve at the feed inlet to allow various materials in the upper hopper to enter the mixing tank. After the valve closes, the control system starts the mixing device, and the various materials are pre-mixed for about 5 seconds. After mixing, the adjustable pressurized spray assembly sprays the solution for 10-15 seconds. After spraying stops, the mixing device continues to mix for about 15 seconds. The control system then opens the unloading assembly to unload the material for about 15 seconds. The mixing device stops, and the cleaning cylinder cleans the material. After the cleaning is completed, the unloading cylinder closes the unloading hopper door.

[0015] In one or more of the above-described specific embodiments, the powder mixing equipment provided by the present invention employs a pressurized spray device in conjunction with a specially designed incremental impeller to improve the mixing uniformity of the powder. Controlled by PLC, it boasts a high degree of automation, and multiple sealing structures reduce the risk of powder and liquid leakage. It improves the mixing uniformity of the powder and reduces clumping; the sealed structure design prevents material splashing and ensures the safety of users, making it safer and more efficient; automated control improves production efficiency and reduces labor costs; and it prevents leakage of materials and solutions, ensuring material cleanliness and reducing environmental pollution. Attached Figure Description

[0016] 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.

[0017] 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.

[0018] Figure 1 This is one of the structural schematic diagrams of the powder mixing equipment provided by the present invention; Figure 2 This is a second schematic diagram of the structure of the powder mixing equipment provided by the present invention; Figure 3 This is the third schematic diagram of the structure of the powder mixing equipment provided by the present invention; Figure 4 This is the fourth schematic diagram of the powder mixing equipment provided by the present invention; Figure 5 This is the fifth schematic diagram of the structure of the powder mixing equipment provided by the present invention; Figure 6 This is the sixth schematic diagram of the structure of the powder mixing equipment provided by the present invention; Figure 7 This is one of the structural schematic diagrams of the unloading component in the powder mixing equipment provided by the present invention; Figure 8 This is a second schematic diagram of the unloading component in the powder mixing equipment provided by the present invention; Figure 9 This is the third schematic diagram of the unloading component in the powder mixing equipment provided by the present invention; Figure 10 This is the fourth schematic diagram of the unloading component in the powder mixing equipment provided by the present invention; Figure 11 This is the fifth schematic diagram of the unloading component in the powder mixing equipment provided by the present invention; Figure 12 Sixth schematic diagram of the unloading component in the powder mixing equipment provided by the present invention; Figure 13 This is the seventh schematic diagram of the unloading component in the powder mixing equipment provided by the present invention; Figure 14 This is one of the structural schematic diagrams of the adjustable pressurized spray assembly in the powder mixing equipment provided by the present invention; Figure 15 This is a second schematic diagram of the adjustable pressurized spray assembly in the powder mixing equipment provided by the present invention. Figure 16 This is the third structural schematic diagram of the adjustable pressurized spray assembly in the powder mixing equipment provided by the present invention; Figure 17 This is the fourth schematic diagram of the adjustable pressurized spray assembly in the powder mixing equipment provided by the present invention. Figure 18 This is the fifth schematic diagram of the adjustable pressurized spray assembly in the powder mixing equipment provided by the present invention; Figure 19 This is the sixth schematic diagram of the adjustable pressurized spray assembly in the powder mixing equipment provided by the present invention; Figure 20 This is one of the structural schematic diagrams of the stirring component in the powder mixing equipment provided by the present invention; Figure 21This is a second schematic diagram of the structure of the stirring component in the powder mixing equipment provided by the present invention; Figure 22 This is the third schematic diagram of the structure of the stirring component in the powder mixing equipment provided by the present invention; Figure 23 This is the fourth schematic diagram of the structure of the stirring component in the powder mixing equipment provided by the present invention; Figure 24 This is the fifth schematic diagram of the structure of the stirring component in the powder mixing equipment provided by the present invention; Figure 25 This is the sixth schematic diagram of the structure of the stirring component in the powder mixing equipment provided by the present invention; Figure 26 This is one of the structural schematic diagrams of the sealing structure in the powder mixing equipment provided by the present invention; Figure 27 This is a second schematic diagram of the sealing structure in the powder mixing equipment provided by the present invention; Figure 28 This is the third schematic diagram of the sealing structure in the powder mixing equipment provided by the present invention; Figure 29 This is the fourth schematic diagram of the sealing structure in the powder mixing equipment provided by the present invention; Figure 30 This is the fifth schematic diagram of the sealing structure in the powder mixing equipment provided by the present invention.

[0019] Explanation of reference numerals in the attached figures: 1-Frame assembly, 2-Transmission assembly, 3-Unloading assembly, 4-Mixing device, 5-Mixing tank; 6-Adjustable pressurized spray assembly, 7-Drive component, 8-Control system; 21-Agitator shaft, 22-C-key, 23-Oil seal spacer ring, 24-Skeleton oil seal, 25-Mounting base; 26-O-ring seal, 27-Gas seal chamber seat, 28-Combination seal, 29-Gas tube rod; 210 - Upper seal, 211 - Angular contact bearing, 212 - Bearing mounting base, 213 - Deep groove ball bearing; 214-Oil injection nozzle, 215-Bearing spacer ring, 216-Lower seal seat, 217-Sealing lock nut; 218 - Pulley, 219 - Pulley lock plate; 31-Unloading bin body, 32-Cleansing scraper, 33-Push rod mounting seat, 34-Unloading valve disc, 35-Cylinder guard; 36-Blocking scraper, 37-Hopper cover, 38-Cleansing cylinder, 39-Blowing air pipe, 310-Unloading cylinder; 311-Quick-opening handwheel; 41-First blade, 42-Second blade, 43-Third blade, 44-Fourth blade, 45-Locking spacer; 46 - Adjusting washer, 47 - O-ring seal, 48 - Lock nut; 51-Barrel lid; 61-Heavy-duty fastener, 62-Sight glass, 63-Solution distribution line, 64-Infeed valve, 65-Clamp; 66-Bag respirator, 67-Main solution pipeline, 68-Inlet valve, 69-Spray pipeline; 610 - Nozzle. Detailed Implementation

[0020] 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.

[0021] In one specific implementation, such as Figures 1-6 As shown, the powder mixing equipment provided by the present invention includes a frame assembly, a mixing tank, a mixing device, and a transmission assembly; wherein, the mixing tank is installed on the frame assembly, the inner cavity of the mixing tank forms a material mixing chamber, and the side wall of the mixing tank has a discharge port communicating with the material mixing chamber; the mixing element of the mixing device is disposed in the material mixing chamber, the power output end of the transmission assembly is connected to the mixing device, and the power input end of the transmission assembly is connected to the drive element.

[0022] Furthermore, the powder mixing equipment also includes: The control system controls the opening of the butterfly valve at the feed inlet to allow various materials in the upper hopper to enter the mixing tank. After the valve closes, the control system starts the mixing device, and the various materials are pre-mixed for about 5 seconds. After mixing, the adjustable pressurized spray assembly sprays the solution for 10-15 seconds. After spraying stops, the mixing device continues to mix for about 15 seconds. The control system then opens the unloading assembly to unload the material for about 15 seconds. The mixing device stops, and the cleaning cylinder cleans the material. After the cleaning is completed, the unloading cylinder closes the unloading hopper door.

[0023] During operation, the drive component (such as a motor) transmits power to the mixing device through a transmission assembly. The mixing component rotates within the material mixing chamber, shearing and mixing the input materials (such as flour and water). After mixing, the material is discharged through the outlet of the mixing tank. The frame assembly provides overall support for the equipment. The cooperation between the mixing device and the transmission assembly ensures uniform mixing of the powder. The modular structure facilitates assembly and maintenance. The frame assembly can be a welded steel frame or a bolted assembly frame. The drive component can be a hydraulic motor or an electric motor, and the transmission assembly can use gear transmission or belt transmission, etc.

[0024] Specifically, the bottom of frame component 1 is equipped with perforated feet, which can be fixed to the ground. Figure 1 Taking the direction shown as an example, the upper surface of the top right side of frame assembly 1 is equipped with a welded nut, which is connected and fixed to the mixing tank 5 by bolts. The lower surface of the top right side of frame assembly 1 is also equipped with a welded nut, which is connected and fixed to the transmission assembly 2 by bolts. The outer circle of transmission assembly 2 is equipped with an O-ring, which fits with the inner wall of the bottom circular hole of mixing tank 5 for positioning and sealing. Transmission assembly 2 is equipped with a drive shaft, the upper end of which is installed and fitted with the stirring device 4 by threads. The lower end of transmission assembly 2 is equipped with a pulley, which is connected to the drive component 7 by a belt. The drive component 7 is installed in the lower left part of the interior of frame assembly 1 and is fixed by screws. Adjustable pressurized spray assembly 6 is installed on the upper part of mixing tank 5 and fixed by buckle connection. Adjustable pressurized spray assembly 6 is equipped with four evenly distributed nozzles that extend into the interior of mixing tank 5 to achieve directional, quantitative, and timed spraying of solution. The other end of the spray pipeline is connected to the solution tank through a hose. The upper center inlet of adjustable pressurized spray assembly 6 is also provided. The unloading assembly 3 is installed at the lower right side of the mixing tank 5. The unloading assembly 3 is fixed to the mixing tank 5 with bolts. The unloading assembly 3 is equipped with a unloading valve flap, which is sealed to the mixing tank 5 with an O-ring to ensure its sealing performance during long-term operation. The control system 8 is welded to the upper left side of the frame assembly 1. Various control elements are installed inside the control system 8, and control lines and air pipes are connected to the various actuators through the inside of the frame.

[0025] In a specific application scenario, taking a noodle mixer as an example, for use in noodle mixing systems in the food industry, please refer to [link / reference needed]. Figures 1-6The powder mixing equipment includes a frame assembly 1, a transmission assembly 2, a discharge assembly 3, a mixing device 4, a mixing drum 5, an adjustable pressurized spray assembly 6, a drive assembly 7, and a control system 8. The mixing drum 5 has a mounting hole for the transmission assembly 2 at its bottom center, a discharge port on its right bottom side, and a mounting port for the adjustable pressurized spray assembly 6 at its top. The interior of the mixing drum 5 is a mixing chamber used to hold and mix flour flakes. Flour enters the mixing chamber through the inlet hole on the adjustable pressurized spray assembly 6, is mixed by the mixing device 4, and then discharged to the outside of the drum through the discharge port. The bottom of the mixing drum has evenly distributed threaded bottom holes, which are fixed to the frame assembly 1 with screws. The mixing device 4 is installed at one end of the transmission assembly 2 and locked with threads. The other end of the transmission assembly 2 is equipped with a pulley, which is connected to a pulley installed on the drive assembly 7 via a belt. The drive assembly 7 is installed inside the lower left side of the frame assembly 1, fixed with screws, and has an adjustable tension structure. The adjustable pressurized spray assembly 6 is installed on top of the mixing tank 5. An O-ring is provided on the top of the mixing tank 5, and the adjustable pressurized spray assembly 6 is sealed to the mixing tank 5 via the O-ring. Externally, it is fixed by a snap fastener connection. The adjustable pressurized spray assembly 6 has a feed inlet at its center, which can be connected to a hopper via a flexible connector for feeding. The adjustable pressurized spray assembly 6 has a spray pipe, and four evenly distributed solid conical nozzles are installed inside the assembly. The nozzles are connected to the pipe, and the spray areas of the four solid conical nozzles are uniformly tangent, ensuring thorough contact with the flour. A control valve is provided at the other end of the spray pipe, and the valve is connected to the spray pressurization tank via a pipeline. The discharge assembly 3 is installed on the bottom right side of the mixing tank 5 and has a discharge port. The discharge assembly 3 has an O-ring for sealing the discharge port and is fixed by screws.

[0026] In existing technologies, the unloading components of powder mixing equipment are mostly of the slide-plate type, flap-plate type, or direct-insertion type. However, the slide-plate type suffers severe wear after prolonged operation, leading to leakage. Wear also causes debris from the friction components to fall into the material, affecting product quality. The flap-plate type, with its end-to-end sealing, is prone to material accumulation on the sealing surface due to frequent unloading, resulting in poor sealing, material leakage, environmental pollution, and material waste. Cleaning is also inconvenient, easily creating unsanitary corners. The direct-insertion type, with its conical-to-conical sealing, requires high machining precision, is difficult to manufacture, and has strict requirements on material flowability. Materials with poor flowability tend to accumulate on the sealing surface, causing poor sealing, material leakage, environmental pollution, and material waste.

[0027] Therefore, in some embodiments, the present invention provides a discharge assembly to improve the cleanliness of the sealing surface and prevent powder or liquid leakage. For example... Figures 7-13As shown, the powder mixing equipment also includes a discharge assembly 3 installed at the discharge port of the mixing tank. The discharge assembly 3 includes a discharge bin, a push rod, a push rod mounting base, a baffle scraper, and a cleaning assembly. The discharge bin has a discharge inlet and a discharge outlet on opposite side walls. The discharge inlet is connected to the discharge outlet so that the discharge bin is connected to the material mixing chamber. A discharge valve is detachably installed at the discharge outlet of the discharge bin, and one end of the push rod is welded to the discharge valve. It should be understood that the discharge valve is a key component for opening and closing the discharge port at the bottom of the bin. When the discharge valve is closed, there is no gap at the discharge port of the bin (referring to the mixing bin), and the integrity of the inner diameter circle of the discharge bin is maintained. One end of the discharge valve is an arc surface with the same size as the inner diameter of the bin. A discharge cylinder is installed on the push rod mounting base. The other end of the push rod is connected to the discharge cylinder. The discharge valve flap closes or opens the discharge outlet under the action of the discharge cylinder. Specifically, one end of the push rod is welded to the discharge valve flap, and the other end is connected to the discharge cylinder. The discharge cylinder is installed on the left side of the back of the push rod mounting base and fixed with screws. The discharge cylinder moves in the opposite direction. An oil-free bearing is installed in the center of the push rod mounting base, allowing the push rod to move smoothly within the mounting base. The discharge cylinder moves in the direction of the silo. During operation, the discharge cylinder extends out of the valve flap and disengages from the silo body, and retracts to close the valve flap and silo body. The cylinder rod cannot contact the material in the silo body, preventing oil contamination of the material and affecting food safety. The baffle scraper is installed on the discharge valve flap and moves synchronously with it. The cleaning assembly is installed on the discharge silo body and discharges the material from the discharge port of the discharge silo body upon startup. Specifically, the baffle scraper is circular and installed on the back of the discharge valve disc to prevent material from splashing onto the oil-free bearing between the discharge valve disc and the push rod mounting seat during discharge. The cleaning scraper is installed at the upper end of the discharge port of the bin. After surface discharge, a certain amount of residual material will adhere to the discharge valve disc and the sealing surface of the bin. The purpose of the scraper is to clean the sealing surface and scrape off the residual material to ensure the sealing of the discharge valve disc and the bin. After the discharge valve disc detaches from the bin, the material is discharged. After the material is discharged, the cleaning scraper moves down to remove the residual material and returns to its original position, and the discharge valve disc closes.

[0028] During operation, when unloading, the unloading cylinder drives the unloading valve to open the unloading outlet. Material enters the unloading hopper from the mixing tank through the unloading inlet and is then discharged through the unloading outlet. The baffle scraper moves with the valve to scrape off residual material on the valve surface. After unloading is completed, the cleaning component is activated to clean residual material from the inner wall of the hopper. In this way, the cooperation between the unloading valve and the cylinder enables rapid opening and closing of the unloading port, the baffle scraper reduces material residue, and the cleaning component prevents material accumulation on the inner wall of the hopper, thus improving unloading efficiency and cleanliness.

[0029] The aforementioned unloading cylinder, as a driving component for linear motion, can also be replaced by an electric push rod, suitable for scenarios without an air source; the material of the baffle scraper can be food-grade silicone instead of rubber to meet the hygiene requirements of the pharmaceutical and food industries; the unloading bin can adopt a conical bottom design instead of a straight wall design, utilizing gravity to assist in material discharge.

[0030] The cleaning assembly includes a cleaning cylinder and a cleaning scraper. The cylinder of the cleaning cylinder is installed in the unloading bin, and the end of the cylinder rod away from the cylinder is located inside the unloading bin. The cleaning scraper is installed in the end of the cylinder rod of the cleaning cylinder away from the cylinder and moves in the unloading bin under the drive of the cleaning cylinder.

[0031] During operation, the cylinder rod of the cleaning cylinder extends and retracts, driving the cleaning scraper to reciprocate along the inner wall of the unloading hopper, scraping the attached residual material to the unloading outlet for discharge. This mechanical scraping action of the scraper thoroughly cleans the material from the inner wall of the hopper, preventing cross-contamination, and is particularly suitable for sticky powders or materials prone to clumping. The cleaning cylinder can be a servo electric cylinder to achieve precise control of the scraper's stroke; the cleaning scraper can adopt a segmented structure instead of a one-piece design to adapt to irregularly shaped unloading hoppers; a vibrator can be added to assist in cleaning, working in conjunction with the scraper to improve the effect.

[0032] Furthermore, the unloading assembly also includes a cylinder guard, a blowing pipe, and a bin cover; wherein, the cylinder guard is mounted on the push rod mounting base, the unloading cylinder is disposed inside the cylinder guard, the blowing pipe is mounted on the push rod mounting base, and the outlet of the blowing pipe is located inside the unloading bin, and the bin cover is detachably mounted on the upper part of the unloading bin via a quick-opening handwheel.

[0033] In this way, the cylinder guard protects the unloading cylinder from dust contamination, thereby extending the cylinder's service life; the blowing air pipe sprays air into the bin during unloading or cleaning, dispersing fine residual materials. The blowing air pipe and the cleaning scraper form a dual cleaning structure of mechanical and pneumatic cleaning, improving cleaning efficiency; when maintenance is required, the bin cover can be opened by loosening the quick-release handwheel to maintain the internal components. The quick-release handwheel enables quick disassembly and assembly of the bin cover, reducing maintenance difficulty.

[0034] The unloading assembly includes an unloading bin body 31, a cleaning scraper 32, a push rod mounting base 33, an unloading valve disc 34, a cylinder guard 35, a baffle scraper 36, a bin cover 37, a cleaning cylinder 38, a blowing air pipe 39, an unloading cylinder 310, and a quick-opening handwheel 311. The left side of the unloading bin body 31 is connected and fixed to the mixing bin body, and the push rod mounting base 33 is installed on the right side. The unloading valve disc 34 is installed on the push rod mounting base 33, and the baffle scraper 36 is installed on its back. The upper part of the unloading bin body 31... The material cleaning cylinder 38 is installed, the material cleaning scraper 32 is connected to the material cleaning cylinder 38, and one side intersects with the unloading bin 31; the material cleaning cylinder 38 is installed on the outside of the push rod mounting base 33, the material cleaning cylinder 38 is connected to the unloading valve 34, and the cylinder cover 35 is installed on the outside of the push rod mounting base 33; the blowing air pipe 39 is installed on the push rod mounting base 33; the bin cover 37 is fixed to the upper part of the unloading bin 31 by the quick-opening handwheel 311.

[0035] Specifically, the left side of the unloading chamber 31 is provided with a threaded countersunk hole, which is detachably fixed to the mixing chamber by screws. An O-ring is provided in front of the unloading valve disc 34 for a sealing fit with the mixing chamber. One side of the cleaning scraper 32 is made of soft material to clean residual material inside the unloading chamber 31 before the chamber door is closed. The blowing air pipe 39 is installed at a specific position on the lower part of the outer circle of the push rod mounting base 33 for blowing and cleaning the unloading valve disc 34. A discharge pipe is provided at the bottom of the unloading chamber 31 for connecting to the receiving device below. The unloading valve disc 34 and the mixing chamber adopt a contour-following design to improve mixing efficiency.

[0036] In the specific application scenarios mentioned above, using a noodle mixer as an example, please continue to refer to... Figures 7-13 The left side of the unloading hopper 31 is connected and fixed to the mixing hopper. A push rod mounting base 33 is installed on the right side of the unloading hopper 31, and the unloading valve 34 is mounted on the push rod mounting base 33. A baffle scraper 36 is installed on the back of the unloading valve 34. A cleaning cylinder 39 is installed on the upper part of the unloading hopper 31, and a cleaning scraper 32 is connected to the cleaning cylinder 39, with one side of the cleaning scraper 32 intersecting with the unloading hopper 31. A cleaning cylinder 38 is installed outside the push rod mounting base 33, and the cleaning cylinder 38 is connected to the unloading valve 34. A cylinder guard 35 is installed outside the push rod mounting base 33 to protect the cleaning cylinder 38. A blowing air pipe 39 is installed on the push rod mounting base 33 to blow and clean the unloading valve 34, ensuring the sealing of the unloading valve 34 when it closes next. A cover 37 is installed on the upper part of the unloading bin body 31. The cover 37 is fixed to the unloading bin body 31 by a quick-opening handwheel 311.

[0037] Specifically, the unloading assembly includes an unloading bin body 31, a cleaning scraper 32, a push rod mounting base 33, an unloading valve 34, a cylinder guard 35, a baffle scraper 36, a bin cover 37, a cleaning cylinder 38, a blowing air pipe 39, an unloading cylinder 310, and a quick-opening handwheel 311. This unloading assembly is used in material mixing equipment in the chemical, pharmaceutical, and food industries. The left side of the unloading bin body 31 has a threaded countersunk hole for connection and fixation to the mixing bin body with screws. The right side of the unloading bin body 31 is fitted with a push rod mounting base 33 via screws. The unloading valve 34 is mounted at the center of the push rod mounting base 33. A baffle scraper 36 is mounted on the back of the unloading valve 34. The baffle scraper 36 is used to clean residual material on the push rod mounting base 33. An O-ring is provided in front of the unloading valve 34 to achieve a seal with the mixing bin body. A cleaning cylinder 39 is installed on the upper left side of the unloading hopper 31. A cleaning scraper 32 is connected and fixed to the cleaning cylinder 39 on the upper left side inside the unloading hopper 31. One side of the cleaning scraper 32 is made of soft material and intersects with the unloading hopper 31 to clean residual material before the hopper door closes. A cleaning cylinder 38 is installed on the outside of the push rod mounting base 33 and fixed with screws. The cleaning cylinder 38 is connected to the unloading valve 34 to realize the opening and closing of the unloading valve. A cylinder cover 35 is installed on the outside of the push rod mounting base 33 to protect the cleaning cylinder 38. A blowing air pipe 39 is installed at a specific position on the lower part of the outer circle of the push rod mounting base 33 to blow and clean the unloading valve 34 to ensure the sealing of the unloading valve 34 when it closes next. The upper part of the unloading hopper 31 is equipped with a hopper cover 37, which is fixed to the unloading hopper 31 by a quick-opening handwheel 311, facilitating cleaning and maintenance inside the unloading hopper 31. The lower part of the unloading hopper 31 is provided with a discharge pipe, which facilitates connection to the receiving device below.

[0038] In this way, the unloading assembly improves its sealing performance through the design of the residual material scraper and O-ring, reducing environmental pollution and material waste; the direct plug design of the unloading valve disc and the conformal design of the mixing chamber improve the mixing efficiency; the sealed structure design prevents material splashing, ensuring the cleanliness of the material and the safety of the user, making it safer and more efficient; and the automated control improves production efficiency and reduces labor costs.

[0039] Existing noodle mixing machines rely on gravity to allow the solution to flow into the machine, resulting in only localized mixing and preventing large-area cross-contamination. Furthermore, the overall flow of solution by gravity cannot be precisely controlled, and some solution may still be slowly dripping in even at the end of mixing, leading to uneven mixing and clumping. Manually adding the solution requires opening the lid during mixing, which is extremely dangerous as it can cause flour leakage, resulting in dust pollution and harm to the environment and personnel. The high-speed operation of the equipment also poses a significant risk of injury, compromising user safety. This also contributes to uneven mixing and clumping.

[0040] To address the aforementioned technical problems, the present invention also provides an adjustable pressurized spraying component for a powder mixing equipment, which can precisely control the spraying time and increase the spraying area to fully improve the mixing uniformity of the powder.

[0041] like Figures 14-19 As shown, the powder mixing equipment also includes an adjustable pressurized spray assembly, which includes a sight glass, a main solution pipeline, a solution distribution pipeline, a spray pipeline, a feed valve, and a bag breather. The sight glass is embedded in the lid of the mixing tank. One end of the main solution pipeline is connected to a solution source. One end of the solution distribution pipeline is detachably connected to the main solution pipeline via a clamp. One end of the spray pipeline is connected to the other end of the solution distribution pipeline, and the other end of the spray pipeline extends into the mixing chamber. A nozzle is installed at the end of the spray pipeline located within the mixing chamber. The feed valve is installed on the feed pipe passing through the lid to control the opening and closing of the feed pipe. The bag breather is installed on the lid. During operation, the solution enters through the solution pipeline and is sprayed into the hopper through the nozzle. The opening and closing of the solution is controlled by the valve at the solution pipeline interface. The feed valve is located at the center of the lid, controlling the entry and closing of the powder material and preventing splashing during mixing.

[0042] During operation, the solution enters the spray pipeline via the main solution pipeline and branch pipelines. After being atomized by nozzles, it is sprayed into the mixing chamber to mix with the powder. A sight glass is used to observe the mixing state within the chamber. The bag respirator balances the air pressure inside the chamber to prevent dust from overflowing. The feed valve controls the amount of powder added. This adjustable pressurization design ensures uniform solution atomization and improves the mixing efficiency of the powder and solution. The clamp connection facilitates pipeline disassembly and cleaning. The bag respirator enables dust-free operation, meeting environmental protection requirements. The nozzles can be rotatable to expand the spray range; the main solution pipeline can be equipped with a flow meter and pressure valve for precise control of the spray volume; the bag respirator can be replaced with a high-efficiency filter, suitable for high-cleanliness environments (such as the pharmaceutical industry).

[0043] Specifically, the adjustable pressurized spray assembly 6 includes a mixing tank cover, a sight glass, a solution distribution pipeline, a feed valve, clamps, a bag breather, a main solution pipeline, a liquid inlet valve, a spray pipeline, a conical solid nozzle, and heavy-duty fasteners. The upper part of the mixing tank cover has mounting holes for the sight glass, the solution distribution pipeline, and the bag breather; heavy-duty fasteners are evenly installed on the outer side; and the feed pipe is located at the center of the upper part. The sight glass is embedded in the corresponding mounting hole on the mixing tank cover to observe the mixing state of the materials inside the tank. One end of the solution distribution pipeline is installed in the corresponding mounting hole on the mixing tank cover, and the other end is locked to the main solution pipeline by a clamp to achieve solution distribution and delivery. The feed valve is fixed to the feed pipe at the center of the upper part of the mixing tank cover by a clamp to control the opening and closing of the feed channel. The clamps are used to fix the feed valve to the feed pipe of the mixing tank cover, the solution distribution pipeline to the main solution pipeline, and the main solution pipeline to the liquid inlet valve, respectively, to achieve a detachable and sealed connection. The bag breather is installed on the mixing tank cover. The corresponding mounting holes are used to balance the air pressure inside and outside the tank and prevent dust from overflowing. One end of the main solution pipeline is connected to the solution distribution pipeline via a clamp, and the other end is connected to the inlet valve via a clamp, forming the main channel for solution delivery. The inlet valve is connected to the end of the main solution pipeline away from the solution distribution pipeline via a clamp, controlling the flow of solution into the main pipeline. There are four spray pipelines evenly distributed, one end of which has an external thread and is locked and fixed inside the mixing tank cover, and the other end has a tapered internal thread. The nozzles are solid conical nozzles, which are locked and fixed to the end of the spray pipeline away from the mixing tank cover via a tapered internal thread, used to spray the solution in a conical atomized form. Heavy-duty buckles are evenly installed on the outside of the mixing tank cover for locking and fixing the mixing tank cover to the tank body.

[0044] This adjustable pressurized spray device is used in noodle mixing systems in the food and other industries. Using the aforementioned noodle mixer as an example, please continue to refer to [the relevant documentation / reference]. Figures 14-19 The adjustable pressurized spray assembly 6 provided by the present invention includes a sight glass 62 installed on the lid of the mixing tank 5, a solution diversion pipeline 63, a feed valve 64, a clamp 65, a bag breather 66, a solution main pipeline 67, a liquid inlet valve 68, a spray pipeline 69, a conical solid nozzle 610, and a heavy-duty buckle 61.

[0045] A transmission component 2 is installed at the center of the bottom of the mixing tank 5, a discharge port is provided on the right bottom, and an adjustable pressurized spray component 6 is installed at the top. The inside of the mixing tank 5 is a mixing chamber, which is used to hold and mix flour flakes. Flour enters the mixing chamber through the feed hole on the adjustable pressurized spray component 6 at the top. After being mixed by the mixing device 4, it is sent to the outside of the tank through the discharge port. The bottom of the outer side of the mixing tank 5 is provided with evenly distributed threaded bottom holes, which are fixed to the frame component 1 by screws.

[0046] The upper part of the lid 51 has mounting holes for a solution distribution pipe 63, a bag breather 66, and a sight glass 62. These pipes are installed in their respective holes on the lid 51. Heavy-duty fasteners 61 are evenly distributed and installed on the outer side of the lid 51. The feed valve 64 is fixed to the feed pipe located at the center of the lid 51 by clamps 65. One end of the solution distribution pipe 63 is connected to the main solution pipe 64 and secured with clamps. The other end of the main solution pipe 67 is connected to the inlet valve 68 and secured with clamps. Four evenly distributed spray pipes 69 are installed inside the lid 51. One end of each spray pipe 69 has an external thread, which is locked to the lid 51. The other end of each spray pipe 69 has a tapered internal thread and is locked to the nozzle 10. The spray pipes 69 can be either telescopic or fixed length, depending on the actual application. Solution distribution line 63, bag breather 66, sight glass 62, and heavy-duty buckle 61 are respectively installed on the tank cover 51. Feed valve 64 is fixed to tank cover 51 by clamp 65. One end of solution main line 67 is connected to solution distribution line 63, and the other end of solution main line 67 is connected to inlet valve 68. Spray line 69 is installed inside tank cover 51, and nozzle 610 is installed on spray line 69.

[0047] In the above specific embodiments, the adjustable pressurized spray assembly provided by the present invention can improve the uniformity of dough mixing in a noodle mixer. The four spray heads are evenly distributed and installed, and the distance between the spray heads and the material can be adjusted by replacing the mounting rods. The height of the spray heads from the material during mixing should be between 240mm and 250mm. The spray areas of the four spray heads are evenly distributed and do not intersect. At its maximum, the spray head is tangent to the inner diameter of the container and the four spray areas, maximizing contact with the material. The sprayed solution is conical, with the entire circle atomized, ensuring maximum uniformity of the material during mixing. The solution is evenly mixed with the liquid, reducing the phenomenon of wet and dry sections. It is simple to operate and reduces costs. The external pipeline is made of sanitary grade 316L stainless steel and is welded with elbows to reduce the number of threaded connections. Post-weld pressure testing reduces the risk of corrosion and leakage, improving safety performance. The pipeline is corrosion resistant and the inner wall is mirror polished, allowing the solution to flow smoothly and without residue. The unimpeded flow of the solution improves the efficiency of the pipeline. The nozzle and nozzle pipeline are connected by NPT threads. NPT threads have the characteristics of high connection strength, pressure resistance, and tightening with tightening. The length of the nozzle connection pipe can be changed according to the amount of stirring each time.

[0048] Existing powder mixing equipment typically uses symmetrical double-blade agitators, resulting in poor axial mixing and uneven mixing, especially when seasonings are added to the solution. This is particularly problematic for mixing dough with high moisture content, requiring prolonged high-speed mixing. However, prolonged mixing can negatively impact dough texture, causing issues such as gluten formation and fermentation. High-precision double-blade agitators require dynamic balancing tests, making them difficult and costly to manufacture. Meanwhile, simple blades are typically welded to the mixing shaft, making replacement and maintenance extremely inconvenient.

[0049] Therefore, the mixing component provided by this invention adopts a specially designed incremental blade with a segmented structure, resulting in lower manufacturing costs and easier installation and maintenance. The evenly distributed incremental blade structure and specific blade placement angles improve the mixing uniformity of the dough flakes.

[0050] In some embodiments, such as Figure 20-25 As shown, the stirring component includes a stirring shaft 21 and multiple blades. The stirring shaft 21 is connected to the power output end of the transmission assembly. Each blade is mounted on the stirring shaft 21, and at least two of the blades have different mounting angles on the stirring shaft 21. For ease of description, the multiple blades are named the first blade, the second blade, the third blade, and the fourth blade. Specifically, the first blade has a 30° mounting angle with the stirring shaft 21 (viewed from the front), the second blade's surface forms a 90° angle with the first blade's surface (viewed from above), the second blade's mounting angle with the stirring shaft 21 is 30°, the third blade's surface forms a 90° angle with the second blade's surface, the third blade's mounting angle with the stirring shaft 21 is 30°, the fourth blade's surface forms a 90° angle with the third blade's surface, and the fourth blade's mounting angle with the stirring shaft 21 is 5°.

[0051] Specifically, the upper part of the first blade 41 contacts the lower part of the adjusting washer 46 and is sealed by the O-ring 47; the second blade 42 is at a 90° angle to the first blade 41 (this angle is seen from above); the lower part of the second blade 42 contacts the upper part of the adjusting washer 46 and is sealed by the O-ring 47; the upper part of the second blade 42 contacts the lower part of the adjusting washer 46 and is sealed by the O-ring 47; the third blade 43 is at a 90° angle to the second blade 42. The lower part of the third blade 43 contacts the upper part of the adjusting washer 46 and is sealed by the O-ring 47. The upper part of the third blade 43 contacts the lower part of the adjusting washer 46 and is sealed by the O-ring 47. The fourth blade 44 is at 90° to the third blade 43. The lower part of the fourth blade 44 contacts the upper part of the adjusting washer 46 and is sealed by the O-ring 47. The locking spacer 45 is installed on the fourth blade 44 and locked to the stirring shaft by the locking nut 48.

[0052] Taking a noodle mixer as an example, the purpose of this invention is to provide a mixing blade for a noodle mixer that can improve the uniformity of noodle mixing. The first to third blades are installed at 30° angles, increasing by 90° increments, while the fourth blade is installed at 5° angles. The first to third blades are tangential to the material, achieving radial mixing (gradually raising the material). The angle of the fourth blade reduces the height the material rises, causing it to reverse inwards. Each blade has a rear cutting edge, providing a crushing function during mixing, enabling efficient radial and axial mixing. This method is safe, efficient, simple to operate, and easy to maintain. Furthermore, the bottom of the first blade has a labyrinth sealing groove to prevent material from entering the mixing shaft. The locking nut has a left-hand thread design, ensuring blade safety during mixing and facilitating disassembly and replacement.

[0053] In existing technologies, powder mixing equipment often employs packing gland seals, labyrinth seals, oil skeleton seals, and mechanical seals. However, with packing gland seals, the gap between the packing and the shaft is distributed in a crescent shape around the perimeter during heavy-load startup. Over long-term operation, uneven stress and wear on the packing can easily lead to leakage. Furthermore, replacement is difficult and maintenance is inconvenient. Labyrinth seals require multiple labyrinth cavities, necessitating a large machining volume, resulting in higher material and machining costs. Cleaning is also difficult, creating unsanitary areas. Oil skeleton seals require multiple components, often resulting in complex structures. For equipment with high cleanliness requirements, replacement and maintenance are inconvenient, and cleaning is difficult. Mechanical seals have complex structures requiring high machining precision, making machining difficult and costly.

[0054] In summary, the present invention employs a sealing structure for transmission components to address issues such as improving sealing performance, facilitating immersion cleaning, and reducing costs.

[0055] In some embodiments, such as Figures 26-30 As shown, the transmission assembly includes a pulley 218 and a sealing structure. The pulley is mounted on the stirring shaft 21 and is connected to the output shaft of the drive component via a belt. The sealing structure is mounted on the stirring shaft 21 to achieve a seal between the stirring shaft 21 and the bottom of the container. The function of the sealing structure is to prevent materials and solutions from entering the bearings at the bottom of the stirring shaft, contaminating materials, and damaging the transmission assembly.

[0056] The sealing structure includes a mounting base 25, an O-ring 26, a gas tube 29, a bearing mounting seat 212, an upper sealing seat 210, and a lower sealing seat 216. A skeleton oil seal 24 is mounted on the upper end of the mounting base 25, and the bearing mounting seat 212 is mounted on the lower end. The outer periphery of the mounting base 25 is provided with an O-groove and an oil inlet 214, and an air seal chamber seat 27 is installed inside. The O-ring 26 is embedded in the O-groove. The gas tube 29 passes through the mounting base 25 and is assembled and connected to the air seal chamber seat 27. An angular contact shaft is mounted on the upper end of the bearing mounting seat 212. The bearing 211 has two deep groove ball bearings 213 mounted at its lower end; the upper sealing seat 210 is installed on the stirring shaft 21 and has a skeleton oil seal 24 inside it. The upper sealing seat 210 is installed above the bearing mounting seat 212 and presses against the angular contact bearing 211. The upper sealing seat 210 is sealed to the gas seal cavity seat 27 through a combined sealing ring 28; the lower sealing seat 216 is installed on the stirring shaft 21 and has a skeleton oil seal 24 inside it. The lower sealing seat 216 is installed below the bearing mounting seat 212 and presses against the deep groove ball bearing 213.

[0057] The rotary sealing structure for the output stirring shaft provided in this embodiment is used in material mixing equipment in the machinery, chemical, pharmaceutical, and food industries. Taking the aforementioned noodle mixer as an example, a skeleton oil seal 24 is installed on the upper part of the mounting base 25, its position limited by a snap ring. An O-ring seal 26 is installed on the outside of the mounting base 25, forming a seal with the hopper or cylinder through the O-ring seal 26. An air seal chamber seat 27 is installed on the upper part of the inner side of the mounting base 25, fixed by screws. The lower part of the air seal chamber seat 27 is connected to one end of a combined sealing ring 28. The lower part of the mounting base 25 is fixed to the bearing mounting seat 212 by screws. An angular contact bearing 211 is installed on the upper end of the bearing mounting seat 212 and pressed by an upper sealing seat 210. The upper sealing seat 210 is fixed to the bearing mounting seat 212 by screws, and the other end of the combined sealing ring 28 is connected and sealed to the upper sealing seat 210. Two deep groove ball bearings 213 are mounted on the lower end of the bearing mounting base 212. The two deep groove ball bearings 213 are separated by a bearing spacer 215, which has a grease injection hole for lubrication. A sealing lock nut 217 locks the inner sleeve of the deep groove ball bearing 213 through the thread and keyway on the stirring shaft 21. A lower sealing seat 216 is installed on the lower part of the bearing mounting base 212 and fixed by screws, pressing the outer sleeve of the deep groove ball bearing 213. A skeleton oil seal 24 is installed on the lower sealing seat 216 to seal the grease and prevent it from overflowing and polluting the environment. A C-key 22 is installed on the upper part of the stirring shaft 21, and an oil seal spacer 24 is installed in the middle. The oil seal spacer 23 cooperates with the skeleton oil seal 24 for sealing. A pulley 218 is installed on the lower part of the rotating shaft 21 and is locked by a pulley locking plate 219. The air tube rod 29 passes through the mounting base 25 and is installed on the air seal chamber seat 27, and the oil nozzle 214 is installed on the outside of the mounting base 25.

[0058] In one or more of the above-described specific embodiments, the powder mixing equipment provided by the present invention employs a pressurized spray device in conjunction with a specially designed incremental impeller to improve the mixing uniformity of the powder. Controlled by PLC, it boasts a high degree of automation, and multiple sealing structures reduce the risk of powder and liquid leakage. It improves the mixing uniformity of the powder and reduces clumping; the sealed structure design prevents material splashing and ensures the safety of users, making it safer and more efficient; automated control improves production efficiency and reduces labor costs; and it prevents leakage of materials and solutions, ensuring material cleanliness and reducing environmental pollution.

[0059] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of the present invention should be included within the scope of protection of the present invention.

Claims

1. A powder mixing device, characterized in that, include: Framework components; A mixing tank is mounted on the frame assembly. The inner cavity of the mixing tank forms a material mixing chamber, and the side wall of the mixing tank has a discharge port that communicates with the material mixing chamber. A stirring device, wherein the stirring element of the stirring device is disposed inside the material stirring chamber; A transmission assembly, wherein the power output end of the transmission assembly is connected to the stirring device, and the power input end of the transmission assembly is connected to the driving component.

2. The powder mixing equipment according to claim 1, characterized in that, It also includes a discharge assembly installed at the discharge port of the mixing tank, the discharge assembly comprising: The unloading hopper has an unloading inlet and an unloading outlet on opposite side walls. The unloading inlet is connected to the outlet so that the unloading hopper is connected to the material mixing chamber. A push rod is provided, and a discharge valve disc is detachably installed at the discharge outlet of the discharge bin body. One end of the push rod is welded to the discharge valve disc. A push rod mounting base is provided, on which a discharge cylinder is mounted. The other end of the push rod is connected to the discharge cylinder. The discharge valve flap is closed or opened by the discharge cylinder. A material-blocking scraper is installed on the unloading valve disc and moves synchronously with the unloading valve disc. A material cleaning component is installed in the unloading hopper and discharges material from the unloading port of the unloading hopper when it is started.

3. The powder mixing equipment according to claim 2, characterized in that, The cleaning assembly includes: The material cleaning cylinder has its cylinder barrel installed in the unloading bin body, and the end of its cylinder rod away from the cylinder barrel is located inside the unloading bin body; A cleaning scraper is installed on the end of the cleaning cylinder rod away from the cylinder barrel and moves within the unloading bin under the drive of the cleaning cylinder.

4. The powder mixing equipment according to claim 3, characterized in that, The unloading assembly also includes: A cylinder cover is mounted on the push rod mounting base, and the unloading cylinder is disposed inside the cylinder cover; A blowing air pipe is installed on the push rod mounting base, and the air outlet of the blowing air pipe is located inside the unloading bin. The hopper cover is detachably installed on the upper part of the unloading hopper via a quick-opening handwheel.

5. The powder mixing equipment according to claim 1, characterized in that, It also includes an adjustable pressurized spray assembly, which comprises: A sight glass, which is fitted onto the lid of the mixing tank; A solution main pipeline, one end of which is connected to a solution source; A solution distribution pipeline, one end of which is detachably connected to the main solution pipeline via a clamp; A spray pipe, one end of which is connected to the other end of the solution distribution pipe, the other end of which extends into the stirring chamber, and a nozzle is installed at the end of the spray pipe located in the stirring chamber. A feed valve is installed on the feed pipe that passes through the barrel cover to control the opening and closing of the feed pipe; A cloth bag respirator, which is mounted on the bucket lid.

6. The powder mixing equipment according to claim 1, characterized in that, The stirring component includes: A stirring shaft is connected to the power output end of the transmission assembly. Multiple blades, each blade is mounted on the stirring shaft, and at least two of the blades are mounted at different angles on the stirring shaft.

7. The powder mixing equipment according to claim 6, characterized in that, The plurality of blades includes: The first blade is installed at an angle of 30° to the stirring shaft; The second blade has a surface that is 90° to the surface of the first blade, and the installation angle between the second blade and the stirring shaft is 30°. The third blade has a surface that is 90° to the surface of the second blade, and the installation angle between the third blade and the stirring shaft is 30°. The fourth blade has a surface that forms a 90° angle with the surface of the third blade, and the installation angle between the fourth blade and the stirring shaft is 5°.

8. The powder mixing equipment according to claim 1, characterized in that, The transmission assembly includes: A pulley is mounted on the stirring shaft and is connected to the output shaft of the drive unit via a belt. A sealing structure is installed on the stirring shaft to achieve a seal between the stirring shaft and the bottom of the container.

9. The powder mixing equipment according to claim 8, characterized in that, The sealing structure includes: The mounting base has a skeleton oil seal installed at its upper end and a bearing mounting seat installed at its lower end. The outer periphery of the mounting base is provided with an O-ring and an oil injection nozzle, and the interior is equipped with an air seal chamber seat. O-ring, wherein the O-ring is fitted into the O-groove; An air tube rod passes through the mounting base and is assembled and connected to the air seal chamber seat; A bearing mounting base, wherein an angular contact bearing is fitted at the upper end of the bearing mounting base and two deep groove ball bearings are fitted at the lower end; The upper sealing seat is installed on the stirring shaft and has a skeleton oil seal inside. The upper sealing seat is installed above the bearing mounting seat and presses against the angular contact bearing. The upper sealing seat is sealed to the air seal cavity seat through a combined sealing ring. The lower sealing seat is installed on the stirring shaft and has a skeleton oil seal inside. The lower sealing seat is installed below the bearing mounting seat and presses against the deep groove ball bearing.

10. The powder mixing equipment according to claim 1, characterized in that, Also includes: The control system controls the opening of the butterfly valve at the feed inlet to allow various materials in the upper hopper to enter the mixing tank. After the valve closes, the control system starts the mixing device, and the various materials are pre-mixed for about 5 seconds. After mixing, the adjustable pressurized spray assembly sprays the solution for 10-15 seconds. After spraying stops, the mixing device continues to mix for about 15 seconds. The control system then opens the unloading assembly to unload the material for about 15 seconds. The mixing device stops, and the cleaning cylinder cleans the material. After the cleaning is completed, the unloading cylinder closes the unloading hopper door.

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