A multi-stage grinding device with a circulating flushing mechanism

Abstract

The application provides a multi-section grinding device with a circulating flushing mechanism, and belongs to the technical field of grinding equipment. The multi-section grinding device with the circulating flushing mechanism comprises a rack, a grinding roller, a filtering device, a barrel, a belt transmission part, a first motor, a liquid guiding mechanism, a coarse grinding and medium grinding mechanism and a flushing mechanism. The grinding roller is rotationally arranged on the rack, and the first motor is fixed in the rack. The multi-section grinding device adopts multi-section grinding, that is, a three-stage progressive mode of coarse grinding, medium grinding and fine grinding, discards the traditional single cloth grinding mode, and improves the speed of material reaching fine grinding. In addition, the cleaning degree of the equipment is always in the best state through circulating cleaning, effectively eliminating the problems of particle agglomeration and magazine residue, and the inner cavity of the barrel can be cooled by controlling the opening and closing of the first electromagnetic valve and the second electromagnetic valve, thereby bringing better use experience to the user.

Description

Technical Field

[0001] This application relates to the field of grinding equipment technology, and more specifically, to a multi-stage grinding device with a circulating rinsing mechanism. Background Technology

[0002] A search revealed Chinese patent number CN201820393579.6, which discloses a horizontal sand mill, including a frame, grinding rollers, and a drive motor. The frame has a material cylinder fitted around the grinding rollers, and the material cylinder has a feeding pipe. An inlet pipe for material entry is located at the end of the material cylinder, and an outlet pipe is located on the frame. The material cylinder and the outlet pipe are connected by a filter device. The frame also includes a cleaning section, which comprises a water tank and a water pump. The water pump has a first water supply pipe detachably connected to the feeding pipe. An opening is concentrically located at the end of the material cylinder, and a groove is recessed inside the opening. The material cylinder has a fixed disc that slides along the groove, and the inlet pipe is located at the edge of the fixed disc. The combination of the material cylinder and the cleaning section improves cleaning efficiency and is used for grinding and pulverizing materials.

[0003] However, the above solution still has its drawbacks. When the barrel needs to be cleaned, the first water supply pipe and the feeding pipe need to be connected after the fixed plate is rotated. The disassembly and assembly of the first water supply pipe and the fixing after rotating the fixed plate are time-consuming and laborious, which reduces the cleaning efficiency of the barrel. In addition, the material is ground directly without coarse and medium grinding steps, which results in the material reaching the fine grinding speed slowly, giving users a bad user experience. Utility Model Content

[0004] To overcome the above shortcomings, this application provides a multi-stage grinding device with a circulating rinsing mechanism, which aims to improve the problem that when the material cylinder needs to be cleaned, it is necessary to rotate the fixed plate before connecting the first water supply pipe and the feeding pipe. The disassembly and assembly of the first water supply pipe and the fixing after rotating the fixed plate are time-consuming and laborious, which reduces the cleaning efficiency of the material cylinder. In addition, the material is directly ground without coarse and medium grinding steps, resulting in a slow speed at which the material reaches fine grinding.

[0005] This application is implemented as follows: This application provides a multi-stage grinding device with a circulating rinsing mechanism, including a frame, grinding rollers, a filter device, a material cylinder, a belt drive component, a first motor, a liquid guiding mechanism, a coarse grinding and intermediate grinding mechanism, and a rinsing mechanism. The grinding rollers are rotatably mounted on the frame, and the first motor is fixed inside the frame. The output shaft of the first motor and the grinding roller are connected together by the belt drive component. The frame is provided with a discharge pipe for material to flow out. The frame is provided with a material cylinder that is sleeved on the grinding roller. The material cylinder is provided with a partition. The material cylinder is also fixed on the frame. The material cylinder and the discharge pipe are connected by the filter device. The liquid guiding mechanism is installed on the lower surface of the barrel, and the liquid guiding mechanism allows the liquid in the barrel to enter the partition. The coarse and medium grinding mechanism is installed on the frame, and the coarse and medium grinding mechanism enables the material to be coarsely and mediumly ground. The rinsing mechanism is designed to clean the material cylinder and the reactor, and it also helps to dissipate heat from the inner cavity of the material cylinder.

[0006] In one embodiment of this application, it further includes an inlet pipe, a feeding pipe, a feed pipe, and an outlet pipe. The inlet pipe, the feeding pipe, the feed pipe, and the outlet pipe are all disposed on the material cylinder. The inlet pipe and the outlet pipe communicate with the partition layer, and the feeding pipe and the feed pipe communicate with the inner cavity of the material cylinder.

[0007] In one embodiment of this application, the liquid guiding mechanism includes a base, a cylinder, an arc-shaped plate, and a guide rod. The base is fixed to the lower surface of the material cylinder, the cylinder barrel is fixed to the lower surface of the base, the piston rod of the cylinder passes through the material cylinder through a sliding seal, the upper end of the piston rod of the cylinder is fixed to the lower surface of the arc-shaped plate, the lower end of the guide rod is fixed to the upper surface of the arc-shaped plate, and the guide rod also passes through the material cylinder through a sliding seal. The arc-shaped plate is located within the partition.

[0008] In one embodiment of this application, the barrel has a through hole, the guide rod passes through the through hole, and the inner diameter of the through hole is smaller than the diameter of the grinding media.

[0009] In one embodiment of this application, the coarse and medium grinding mechanism includes a reaction vessel, a second motor, a hollow shaft, a first grinding disc, a second grinding disc, a third grinding disc, and a fourth grinding disc. The reaction vessel is fixed on the frame, the second motor is fixed on the upper surface of the reaction vessel, the lower end of the output shaft of the second motor is fixed together with the upper end of the hollow shaft, the first grinding disc and the fourth grinding disc are both fixed on the outer wall of the hollow shaft, and the second grinding disc and the third grinding disc are both fixed in the inner wall of the reaction vessel.

[0010] In one embodiment of this application, the gap between the first grinding disc and the second grinding disc is greater than the gap between the third grinding disc and the fourth grinding disc.

[0011] In one embodiment of this application, the rinsing mechanism includes a water pump, a storage tank, a precision filter screen, a first liquid guide pipe, a water outlet pipe, a rotary joint, a second liquid guide pipe, a first solenoid valve, a second solenoid valve, a third liquid guide pipe, and a nozzle. The precision filter screen is fixed inside the storage tank. One end of the first liquid guide pipe is installed on the water pump, and the other end of the first liquid guide pipe is disposed inside the storage tank. One end of the third liquid guide tube is installed on the water pump, and the other end of the third liquid guide tube is installed on the inlet pipe. The rotary joint is fixed on the hollow shaft. One end of the second liquid guide tube is installed on the inlet of the rotary joint, and the other end of the second liquid guide tube is set on the first liquid guide tube. The first solenoid valve is set on the second liquid guide tube, and the second solenoid valve is set on the outlet pipe. One end of the outlet pipe is installed on the outlet pipe, and the other end of the outlet pipe is inserted into the storage tank. The nozzle is set on the hollow shaft.

[0012] The beneficial effects of this application are as follows: The multi-stage grinding device with a circulating rinsing mechanism obtained by the above design adopts a multi-stage grinding mode, namely, coarse grinding, medium grinding and fine grinding, which abandons the traditional single-cloth grinding mode and improves the speed at which materials reach fine grinding. In addition, the circulating cleaning ensures that the cleanliness of the equipment is always in the best state, effectively eliminating the problems of particle agglomeration and impurity residue. Furthermore, by controlling the opening and closing of the first solenoid valve and the second solenoid valve, the inner cavity of the material cylinder can be cooled, providing users with a better user experience. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of a multi-segment grinding device with a circulating rinsing mechanism provided in an embodiment of this application; Figure 2 A cross-sectional view of a multi-stage grinding device with a circulating rinsing mechanism provided for embodiments of this application; Figure 3 Provided for the implementation of this application Figure 2 Enlarged view of region A in the middle; Figure 4 A three-dimensional structural diagram of the coarse and medium grinding mechanism provided for the embodiments of this application; Figure 5A cross-sectional view of the rack provided for an embodiment of this application; Figure 6 A three-dimensional structural diagram of the rinsing mechanism provided in the embodiments of this application; Figure 7 A cross-sectional view of a hollow shaft provided for an embodiment of this application.

[0015] In the diagram: 110-Frame; 120-Grinding roller; 130-Discharge pipe; 140-Liquid inlet pipe; 150-Feeding pipe; 160-Feeding pipe; 170-Filter device; 180-Cylinder; 190-Belt drive component; 191-First motor; 192-Liquid guiding mechanism; 1921-Base; 1922-Cylinder; 1923-Arc plate; 1924-Guide rod; 1925-Through hole; 193-Partition; 194-Rough and medium grinding mechanism; 1941-Reaction vessel; 1942-Second motor; 1943 - Hollow shaft; 1944- First grinding disc; 1945- Second grinding disc; 1946- Third grinding disc; 1947- Fourth grinding disc; 195- Flushing mechanism; 1951- Water pump; 1952- Storage tank; 1953- Precision filter screen; 1954- First liquid guide tube; 1955- Water outlet pipe; 1956- Rotary joint; 1957- Second liquid guide tube; 1958- First solenoid valve; 1959- Second solenoid valve; 19591- Third liquid guide tube; 19592- Nozzle; 196- Water outlet pipe. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] Example Please see Figures 1-7 This application provides a technical solution: a multi-stage grinding device with a circulating rinsing mechanism, including a frame 110, a grinding roller 120, a filter device 170, a material cylinder 180, a belt drive component 190, a first motor 191, a liquid guiding mechanism 192, a coarse grinding and medium grinding mechanism 194, and a rinsing mechanism 195. The grinding roller 120 is rotatably mounted on the frame 110, and the first motor 191 is fixed inside the frame 110. The output shaft of the first motor 191 and the grinding roller 120 are connected together by a belt drive 190. The frame 110 is provided with a discharge pipe 130 for material to flow out. The frame 110 is provided with a material cylinder 180 that is sleeved on the grinding roller 120. The material cylinder 180 is provided with a partition 193. The material cylinder 180 is also fixed on the frame 110. The material cylinder 180 and the discharge pipe 130 are connected by a filter device 170. The machine also includes a liquid inlet pipe 140, a feeding pipe 150, a feeding pipe 160, and a liquid outlet pipe 196. The liquid inlet pipe 140, the feeding pipe 150, the feeding pipe 160, and the liquid outlet pipe 196 are all provided on the material cylinder 180. The liquid inlet pipe 140 and the liquid outlet pipe 196 are connected to the partition 193. The feeding pipe 150 and the feeding pipe 160 are connected to the inner cavity of the material cylinder 180. A liquid guiding mechanism 192 is installed on the lower surface of the feed cylinder 180. The liquid guiding mechanism 192 allows the liquid inside the feed cylinder 180 to enter the partition 193. The liquid guiding mechanism 192 includes a base 1921, a cylinder 1922, an arc-shaped plate 1923, and a guide rod 1924. The base 1921 is fixed to the lower surface of the feed cylinder 180, and the cylinder barrel of the cylinder 1922 is fixed to the lower surface of the base 1921. The piston rod of the cylinder 1922 slides through a sliding joint. The seal penetrates the material cylinder 180. The upper end of the piston rod of the cylinder 1922 is fixed on the lower surface of the arc plate 1923, and the lower end of the guide rod 1924 is fixed on the upper surface of the arc plate 1923. The guide rod 1924 also penetrates the material cylinder 180 through a sliding seal. The arc plate 1923 is located inside the partition 193. A through hole 1925 is provided on the material cylinder 180. The guide rod 1924 passes through the through hole 1925. The inner diameter of the through hole 1925 is smaller than the diameter of the grinding media. The coarse and intermediate grinding mechanism 194 is mounted on the frame 110. The mechanism 194 performs coarse and intermediate grinding on the material. The coarse and intermediate grinding mechanism 194 includes a reaction vessel 1941, a second motor 1942, a hollow shaft 1943, a first grinding disc 1944, a second grinding disc 1945, a third grinding disc 1946, and a fourth grinding disc 1947. The reaction vessel 1941 is fixed to the frame 110, and the second motor 1942 is fixed to the upper surface of the reaction vessel 1941. The lower end of the output shaft of the second motor 1942 and the upper end of the hollow shaft 1943 are fixed together. The first grinding disc 1944 and the fourth grinding disc 1947 are both fixed on the outer wall of the hollow shaft 1943. The second grinding disc 1945 and the third grinding disc 1946 are both fixed in the inner wall of the reaction vessel 1941. The gap between the first grinding disc 1944 and the second grinding disc 1945 is greater than the gap between the third grinding disc 1946 and the fourth grinding disc 1947, so as to realize coarse grinding and medium grinding. The rinsing mechanism 195 is configured to clean the material cylinder 180 and the reaction vessel 1941. The rinsing mechanism 195 also dissipates heat from the inner cavity of the material cylinder 180. The rinsing mechanism 195 includes a water pump 1951, a storage tank 1952, a precision filter 1953, a first liquid guide pipe 1954, a water outlet pipe 1955, a rotary joint 1956, a second liquid guide pipe 1957, a first solenoid valve 1958, a second solenoid valve 1959, a third liquid guide pipe 19591, and a nozzle 19592. The precision filter 1953 is fixed inside the storage tank 1952. One end of the first liquid guide pipe 1954 is mounted on the water pump 1951, and the other end is located inside the storage tank 1952. The third liquid guide pipe 1959... One end of the first guide pipe 1954 is installed on the water pump 1951, the other end of the third guide pipe 19591 is installed on the inlet pipe 140, the rotary joint 1956 is fixed on the hollow shaft 1943, one end of the second guide pipe 1957 is installed on the inlet of the rotary joint 1956, the other end of the second guide pipe 1957 is set on the first guide pipe 1954, the first solenoid valve 1958 is set on the second guide pipe 1957, the second solenoid valve 1959 is set on the outlet pipe 1955, one end of the outlet pipe 1955 is installed on the outlet pipe 196, the other end of the outlet pipe 1955 is inserted into the storage tank 1952, and the nozzle 19592 is set on the hollow shaft 1943. In this embodiment, the electrical components are controlled by the control box, and the material is paint. In this embodiment, to achieve the stringent standard for coating fineness, the grinding process was deeply optimized. A dual-protection system of multi-stage grinding and equipment circulation cleaning was adopted. In the grinding stage, the traditional single-step grinding mode was abandoned, and the process was broken down into a three-stage progressive process of coarse grinding, medium grinding, and fine grinding. Each stage was matched with different grinding media of different particle sizes and rotation speed parameters, so that the coating particles were gradually refined to the target precision. At the same time, in order to avoid secondary pollution caused by residual impurities in the grinding equipment, a high-frequency circulation cleaning mechanism 195 was established for the grinding equipment. Xylene was used for circulation cleaning during each grinding interval, and the cleaning waste liquid was filtered through a precision filter screen (when the waste liquid generated by rinsing reaches the level of the naked eye). (Until the coating is visibly clear and transparent), ensuring that the equipment cleanliness is always at its best; the dual-process synergy effectively eliminates particle agglomeration and impurity residue, making the coating fineness index far exceed industry standards, providing high-quality products for high-end applications; the high-frequency circulation cleaning mechanism of the grinding equipment implemented to ensure coating fineness continues to advance, and the xylene consumption problem is becoming increasingly prominent; because each cleaning requires a large amount of xylene to deeply clean the equipment to thoroughly remove residual impurities and avoid secondary pollution, the xylene consumption is far higher than that of conventional production mode; the large amount of xylene used cannot be reused due to impurities, forming a considerable amount of waste liquid; Xylene solution can also be used to clean other equipment: (1) Preliminary rinsing (to remove a large amount of residue) Solvent selection: Select compatible solvents based on the film-forming substances in the coating (e.g., xylene + turpentine for alkyd coatings; cyclohexanone + xylene for epoxy coatings; butyl acetate for polyurethane coatings). Do not use incompatible solvents (e.g., using alcohols to dissolve epoxy coatings may cause precipitation).

[0018] Operating points: Sand mill: Inject solvent into the grinding chamber (liquid level covers the grinding media), turn on the agitator (low speed, avoid solvent splashing), circulate for 10-15 minutes, and discharge the waste liquid to the special collection tank through the discharge valve.

[0019] Ball mill: Add solvent to the cylinder (about 1 / 3 of the cylinder volume), seal it, and rotate it at low speed for 5-10 minutes. Pour out the waste liquid.

[0020] Three-roll mill: Start the equipment (adjust the roller speed to the lowest setting), slowly pour the solvent into the feed roller, and at the same time use a soft rubber scraper (to avoid scratching the roller surface) to push the dissolved coating towards the discharge port. Continue for 3-5 minutes, and after stopping the machine, wipe the roller surface with a lint-free cloth.

[0021] (2). Thorough rinsing (removing dead corners and residues) For areas prone to residue buildup, such as equipment gaps and component connections (e.g., valves, pipe joints, impeller roots, and mill screens): Disassembly and cleaning: Removable parts (such as the discharge screen of the sand mill, the inlet sealing ring of the ball mill, and the scraper of the three-roll mill) need to be disassembled separately, soaked in solvent for 10-20 minutes, scrubbed with a soft brush (nylon material), and then rinsed with clean solvent.

[0022] High-pressure flushing: For pipes and dead corners of grinding chambers, use a high-pressure solvent flushing gun (pressure 0.3-0.5MPa) to spray solvent to ensure that the residue in the gaps is dissolved.

[0023] Secondary cycle: Refill the equipment with new solvent (the same type as the initial rinse), repeat the initial rinse operation (shorten the time to 5-8 minutes), and drain the waste liquid.

[0024] (3) Final inspection and confirmation The rinsing effect must be verified by the following standards: Visual inspection: No visible paint residue on the inner wall of the equipment, grinding media (such as zirconium beads), roller surface, etc. (no paint adhering to the wall or accumulation of pigment).

[0025] Wipe inspection: Wipe the contact parts of the equipment (such as the inner wall of the grinding chamber of the sand mill, the roller surface of the three-roll mill) with a clean, lint-free white cloth (or filter paper). There should be no stains, color spots or particles on the white cloth.

[0026] Functional checks: For equipment with a filtration system (such as the discharge filter of a sand mill), check that the filter screen is unobstructed and free from blockage; for a three-roll mill, run it idle for 1 minute and observe that there are no scratches or solvent residues on the roller surface.

[0027] Specifically, the working principle of this multi-stage grinding device with a circulating rinsing mechanism is as follows: During use, the grinding media is injected into the material cylinder 180 through the feeding pipe 150. Then, the material to be ground is injected into the reaction vessel 1941. The control box controls the second solenoid valve 1959 to open and the first solenoid valve 1958 to close. The control box then controls the second motor 1942 and the first motor 191 to operate. The rotation of the output shaft of the second motor 1942 drives the hollow shaft 1943, the first grinding disc 1944, and the fourth grinding disc 1947 to rotate. Under the combined action of the first grinding disc 1944, the second grinding disc 1945, the third grinding disc 1946, and the fourth grinding disc 1947, the material is coarsely and moderately ground. Afterward, the material enters through the feed pipe 160. The material is fed into the barrel 180. The rotation of the output shaft of the first motor 191 drives the belt drive 190 and the grinding roller 120 to rotate. As the grinding roller 120 rotates, the material and grinding media rotate, generating stronger collisions, friction, and shearing effects between them, achieving the purpose of fine grinding. The processed material leaves through the filter device 170 and the discharge pipe 130. During the fine grinding process, the control box controls the water pump 1951 to work. The water pump 1951 injects the liquid in the storage tank 1952 into the partition 193 through the first liquid guide pipe 1954 and the third liquid guide pipe 19591. The liquid then flows back into the storage tank 1952 through the water outlet pipe 1955, thereby cooling the inner cavity of the barrel 180 and preventing grinding. When the grinding roller 120 overheats and the reactor 1941 and the material cylinder 180 need to be cleaned, the processed material is discharged through the discharge pipe 130. The control box controls the second solenoid valve 1959 to close and the first solenoid valve 1958 to open, simultaneously controlling the second motor 1942, the first motor 191, the cylinder 1922, and the water pump 1951 to operate. The retraction of the piston rod of the cylinder 1922 drives the guide rod 1924 away from the through hole 1925, allowing liquid to enter the material cylinder 180. The water pump 1951 sprays the liquid into the reactor 1941 through the second liquid guide pipe 1957, the rotary joint 1956, the hollow shaft 1943, and the nozzle 19592, thus cleaning the reactor 1941. Simultaneously, the liquid flows through the first liquid guide pipe 1957... Liquid 954 and the third liquid guide pipe 19591 are injected into the partition 193. The liquid is sprayed into the material cylinder 180 through the through hole 1925 to clean the material cylinder 180. After a specified time, the control box controls the second solenoid valve 1959 to open and the water pump 1951 to close. The liquid flows back into the storage tank 1952 through the through hole 1925, the liquid outlet pipe 196, and the water outlet pipe 1955. The precision filter screen 1953 filters the impurities in the liquid. The reaction vessel 1941 and the material cylinder 180 are repeatedly circulated and cleaned according to the above steps. The color of the liquid in the storage tank 1952 is observed to determine whether the cleaning liquid needs to be replaced (in order to improve product quality, a large amount of xylene cleaning liquid is used for rinsing during operation, and xylene is used in large quantities).When cooling of the inner cavity of the barrel 180 is required, the guide rod 1924 seals the through hole 1925. When cleaning of the reactor 1941 and the barrel 180 is required, the guide rod 1924 separates from the through hole 1925. This multi-stage grinding device with a circulating flushing mechanism adopts multi-stage grinding, namely a three-stage progressive mode of coarse grinding, medium grinding, and fine grinding, abandoning the traditional single-cloth grinding mode and improving the speed at which materials reach fine grinding. In addition, the circulating cleaning ensures that the cleanliness of the equipment is always at its optimal state, effectively eliminating particle agglomeration and impurity residue problems. Furthermore, by controlling the opening and closing of the first solenoid valve 1958 and the second solenoid valve 1959, the inner cavity of the barrel 180 can be cooled, providing users with a better user experience.

[0028] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A multi-stage grinding device with a circulating rinsing mechanism, characterized in that, The device includes a frame (110), a grinding roller (120), a filter (170), a material cylinder (180), a belt drive (190), a first motor (191), a liquid guiding mechanism (192), a coarse grinding and medium grinding mechanism (194), and a rinsing mechanism (195). The grinding roller (120) is rotatably mounted on the frame (110), and the first motor (191) is fixed inside the frame (110). The output shaft of the first motor (191) and the grinding roller (120) are connected together by the belt drive (190). The frame (110) is provided with a discharge pipe (130) for material to flow out. The frame (110) is provided with a material cylinder (180) that is sleeved outside the grinding roller (120). The material cylinder (180) is provided with a partition (193). The material cylinder (180) is also fixed on the frame (110). The material cylinder (180) and the discharge pipe (130) are connected by the filter device (170). The liquid guiding mechanism (192) is installed on the lower surface of the barrel (180). The liquid guiding mechanism (192) allows the liquid in the barrel (180) to enter the partition (193). The coarse grinding and intermediate grinding mechanism (194) is installed on the frame (110), and the coarse grinding and intermediate grinding mechanism (194) enables the coarse grinding and intermediate grinding of materials; The rinsing mechanism (195) is configured to clean the material cylinder (180) and the reactor (1941), and the rinsing mechanism (195) can also dissipate heat from the inner cavity of the material cylinder (180).

2. The multi-stage grinding device with a circulating rinsing mechanism according to claim 1, characterized in that, It also includes an inlet pipe (140), a feed pipe (150), a feed pipe (160), and an outlet pipe (196). The inlet pipe (140), the feed pipe (150), the feed pipe (160), and the outlet pipe (196) are all disposed on the material cylinder (180). The inlet pipe (140) and the outlet pipe (196) are connected to the partition (193). The feed pipe (150) and the feed pipe (160) are connected to the inner cavity of the material cylinder (180).

3. A multi-stage grinding device with a circulating rinsing mechanism according to claim 1, characterized in that, The liquid guiding mechanism (192) includes a base (1921), a cylinder (1922), an arc plate (1923), and a guide rod (1924). The base (1921) is fixed on the lower surface of the material cylinder (180). The cylinder barrel of the cylinder (1922) is fixed on the lower surface of the base (1921). The piston rod of the cylinder (1922) passes through the material cylinder (180) through a sliding seal. The upper end of the piston rod of the cylinder (1922) is fixed on the lower surface of the arc plate (1923). The lower end of the guide rod (1924) is fixed on the upper surface of the arc plate (1923). The guide rod (1924) also passes through the material cylinder (180) through a sliding seal. The arc plate (1923) is located inside the partition (193).

4. A multi-stage grinding device with a circulating rinsing mechanism according to claim 3, characterized in that, The barrel (180) has a through hole (1925), and the guide rod (1924) passes through the through hole (1925). The inner diameter of the through hole (1925) is smaller than the diameter of the grinding medium.

5. A multi-stage grinding device with a circulating rinsing mechanism according to claim 2, characterized in that, The coarse and medium grinding mechanism (194) includes a reaction vessel (1941), a second motor (1942), a hollow shaft (1943), a first grinding disc (1944), a second grinding disc (1945), a third grinding disc (1946), and a fourth grinding disc (1947). The reaction vessel (1941) is fixed on the frame (110). The second motor (1942) is fixed on the upper surface of the reaction vessel (1941). The lower end of the output shaft of the second motor (1942) is fixed together with the upper end of the hollow shaft (1943). The first grinding disc (1944) and the fourth grinding disc (1947) are both fixed on the outer wall of the hollow shaft (1943). The second grinding disc (1945) and the third grinding disc (1946) are both fixed in the inner wall of the reaction vessel (1941).

6. A multi-stage grinding device with a circulating rinsing mechanism according to claim 5, characterized in that, The gap between the first grinding disc (1944) and the second grinding disc (1945) is greater than the gap between the third grinding disc (1946) and the fourth grinding disc (1947).

7. A multi-stage grinding device with a circulating rinsing mechanism according to claim 5, characterized in that, The flushing mechanism (195) includes a water pump (1951), a liquid storage tank (1952), a precision filter screen (1953), a first liquid guide pipe (1954), a water outlet pipe (1955), a rotary joint (1956), a second liquid guide pipe (1957), a first solenoid valve (1958), a second solenoid valve (1959), a third liquid guide pipe (19591), and a nozzle (19592). The precision filter screen (1953) is fixed inside the liquid storage tank (1952). One end of the first liquid guide pipe (1954) is installed on the water pump (1951), and the other end of the first liquid guide pipe (1954) is located inside the liquid storage tank (1952). One end of the third liquid guide pipe (19591) is installed on the water pump (1951), and the other end of the third liquid guide pipe (19591) is installed on the inlet pipe (140). The rotary joint (1956) is fixed on the hollow shaft (1943). One end of the second liquid guide pipe (1957) is installed on the inlet of the rotary joint (1956), and the other end of the second liquid guide pipe (1957) is set on the first liquid guide pipe (1954). The first solenoid valve (1958) is set on the second liquid guide pipe (1957). The second solenoid valve (1959) is set on the outlet pipe (1955). One end of the outlet pipe (1955) is installed on the outlet pipe (196), and the other end of the outlet pipe (1955) is inserted into the storage tank (1952). The nozzle (19592) is set on the hollow shaft (1943).

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