Efficient discharge pre-grinder and working method thereof

Abstract

The application provides a pre-grinder with high discharging efficiency and a working method thereof, and relates to the technical field of wet grinding equipment. The pre-grinder comprises a rack, wherein the rack is provided with a grinding mechanism; the grinding mechanism comprises: a grinding cavity formed in the interior of a grinding cylinder; an inlet-outlet disc which is detachably fixedly connected with the end of the grinding cylinder provided with an opening, and the inlet-outlet disc is respectively provided with an inlet channel and an outlet channel; a power main shaft which extends into the grinding cavity from the center through hole of the inlet-outlet disc; an outlet stator which is detachably fixedly connected with the inlet-outlet disc and forms an outlet space with the power main shaft; a grinding rotor which is detachably fixedly connected with the power main shaft at the end of the grinding cavity; an auxiliary outlet stirring structure which is arranged in the outlet space and is linked with the power main shaft; and first and second outlet groove groups which are respectively arranged on the outer walls of the grinding rotor and the outlet stator. Under the premise of realizing material grinding, the material can dynamically flow through the outlet channel from multiple paths, so that the discharging efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of wet grinding equipment, and in particular to a pre-grinder with efficient discharging and a working method thereof. BACKGROUND

[0002] In the wet grinding and pigment dispersion processes in the fields of chemical industry, pigments, inks, food processing and the like, when solving problems such as achieving micron and nanometer particle sizes by wet grinding of solid-phase materials, or requiring great mutual dispersion of solid-phase and liquid-phase materials which cannot be mutually dissolved and reacted, a pre-grinder, also known as a bead mill, is usually used. The working mode of the bead mill is to use grinding media (usually grinding beads made of various materials) to collide and grind in an unordered manner in a limited space to achieve the grinding purpose.

[0003] However, such equipment, such as the rod pin type sand mill disclosed in the invention with the announcement number CN213315339U, has some common defects when discharging the ground materials.

[0004] 1. The material discharge usually uses a static filter screen. The vortex sand mill is provided with a filter screen cylinder in the containing space, the filter screen cylinder is in communication with the material outlet, and the material can only be transferred from the filter screen cylinder to the material outlet, so that the discharging efficiency is low.

[0005] 2. The material discharge adopts a single dynamic discharging port. The vortex sand mill is provided with a dynamic discharging port in the containing space formed by the part of the rod pin fixing plate which is longer than the inner cylinder of the filter screen cylinder, so that the discharging efficiency is low.

[0006] Therefore, there is room for improvement, and the application provides a pre-grinder with efficient discharging and a working method thereof. SUMMARY

[0007] In view of the deficiencies of the prior art, the application aims to provide a pre-grinder with efficient discharging, and the specific scheme is as follows.

[0008] A pre-grinder with efficient discharging, comprising a rack, wherein the rack is provided with a grinding mechanism;

[0009] The grinding mechanism comprises:

[0010] A grinding cylinder, which is internally formed with a grinding cavity, and is provided with a closed end and an open end;

[0011] An inlet and outlet disc, which is detachably and fixedly connected to the end of the grinding cylinder which is provided with an opening, and is provided with an inlet channel and an outlet channel, and the inlet channel is in communication with the grinding cavity;

[0012] A power main shaft, which is provided with one end extending into the grinding cavity from the center through hole of the inlet and outlet disc, and can rotate around its own axis;

[0013] The discharge stator is detachably fixedly connected with the inlet and outlet disc and coaxially arranged on the outer wall of the power spindle to form a discharge space with the power spindle, and the discharge space is in communication with the discharge channel;

[0014] The grinding rotor is detachably fixedly connected with the power spindle at the end of the grinding cavity and coaxially arranged on the outer wall of the discharge stator;

[0015] The auxiliary discharge stirring structure is arranged in the discharge space and linked with the power spindle;

[0016] The outer wall of the grinding rotor and the outer wall of the discharge stator are respectively provided with a first discharge groove group and a second discharge groove group, and the first discharge groove group and the second discharge groove group are distributed in a staggered manner.

[0017] Therefore, when the pre-grinder is used, the appropriate grinding medium is selected and placed in the grinding cavity, and after the material to be ground enters the grinding cavity in the grinding cylinder through the feeding channel, the power spindle provides power, the grinding rotor is fixed with the power spindle, and the discharge stator is fixed with the inlet and outlet disc. When the power spindle rotates, the grinding rotor rotates relative to the discharge stator. During the operation of the grinding rotor, the space between the outer wall of the grinding rotor and the inner wall of the grinding cavity has the highest linear velocity, and the kinetic energy (relative speed) between the material and the grinding medium is the largest, which can greatly improve the utilization rate of kinetic energy. With the operation of the grinding rotor, the material to be ground is discharged dynamically, first falling into the space between the grinding rotor and the discharge stator from the first discharge groove group, and then falling into the discharge space from the second discharge groove group on the discharge stator. The auxiliary discharge stirring structure in the discharge space can stir the accumulated material, increase the discharge power, greatly reduce the possibility of material deposition in the discharge space, and facilitate the material to leave the inlet and outlet disc from the discharge channel.

[0018] Further, the discharge stator extends to form an annular fixed part at the central through hole of the inlet and outlet disc, and the inlet pipe and the discharge pipe are independently embedded in the inlet and outlet disc;

[0019] The inlet pipe and the outer wall of the annular fixed part form a transfer cavity in communication with the grinding cavity, and the discharge pipe is in communication with the discharge space after passing through the annular fixed part.

[0020] Therefore, the material entering the inlet pipe first passes through the transfer cavity, and as the weight increases, the material gradually falls into the grinding cavity for subsequent grinding. The ground material falls into the discharge space and finally leaves from the discharge pipe. Through the structural design, the inlet and outlet of the material do not hinder each other and do not affect each other, and the position relationship of the inlet and outlet disc and the discharge stator is effectively utilized for structural arrangement.

[0021] Further, the discharge pipe can be in communication with a material collecting mechanism.

[0022] Therefore, the material discharged from the discharge pipe can be uniformly collected in the material collecting mechanism, facilitating storage.

[0023] Further, the outer wall of the grinding rotor is provided with an array of stirring rods.

[0024] Therefore, during the operation of the grinding rotor, the stirring rod group is driven to rotate, generating a linear speed that can stir the material with larger particles deposited in the grinding chamber, forcing it to move and contact the grinding beads for further grinding.

[0025] Further, the first discharge slot group includes multiple rows of first discharge slots, each row of first discharge slots including multiple first discharge slots arranged around the outer wall of the grinding rotor.

[0026] The second discharge slot group includes multiple rows of second discharge slots, each row of second discharge slots including multiple second discharge slots arranged around the outer wall of the discharge stator.

[0027] Therefore, the first discharge slot group and the second discharge slot group as multiple rows of slot structures make the path of the material during dynamic discharge a multiple dynamic and static ring groove structure, which can achieve large flow of material and reduce the risk of blockage.

[0028] Further, the auxiliary discharge stirring structure includes a spiral sleeve fixed to the outer wall of the power main shaft, and the length of the spiral sleeve is less than or equal to the length of the discharge stator.

[0029] Therefore, the spiral structure on the outer surface of the spiral sleeve can stir the material covered by the spiral sleeve in the discharge space while rotating.

[0030] Further, the auxiliary discharge stirring structure further includes a discharge impeller fixed to the outer wall of the power main shaft, and the discharge impeller is arranged adjacent to the spiral sleeve.

[0031] Therefore, the discharge impeller can stir the material in the internal space of the annular fixed part while rotating, and the material at the annular fixed part is closest to the discharge pipe, greatly reducing the possibility of material deposition below the discharge pipe.

[0032] Further, the grinding cylinder includes a cylinder body and an end cover, and the end cover is detachably fixedly connected to the cylinder body by a screw.

[0033] Therefore, the installation and disassembly of the cylinder body and the end cover are facilitated.

[0034] Further, the cylinder body is provided with a sandwich cavity, and the sandwich cavity is independently arranged with the grinding cavity.

[0035] The outer wall of the cylinder body is provided with a lead-in pipe and a lead-out pipe in communication with the sandwich cavity.

[0036] Therefore, the gas or liquid with certain temperature can be introduced into the interlayer cavity to increase or decrease the temperature of the material in the grinding cavity, so as to ensure the temperature parameter required for grinding.

[0037] Another object of the present application is to provide a working method of the pre-grinder with high-efficiency discharging.

[0038] The working method of the pre-grinder with high-efficiency discharging comprises the following steps:

[0039] Loading grinding beads: a sufficient number of grinding beads are put into the grinding cavity from the feeding pipe on the inlet-outlet disc;

[0040] Feeding: a feeding pump is connected to the feeding pipe on the inlet-outlet disc, and a one-way valve is arranged at the feeding port close to the feeding pipe, the feeding pump is started, and the material sequentially passes through the feeding pipe and the transfer cavity and finally enters the grinding cavity;

[0041] Grinding: the power main shaft is started, the grinding rotor rotates with the power main shaft, the stirring rod group simultaneously stirs the material and the grinding beads in the grinding cavity, the grinding beads grind the material, and the material ground to a certain specification sequentially dynamically passes through the first discharge groove group and the second discharge groove group and enters the discharge space;

[0042] Discharging: after a certain period of grinding, the material in the discharge space is gradually transferred to the discharge pipe under the power of the feeding pump, at the same time, the discharge impeller and the spiral sleeve rotate with the power main shaft to stir the material, increase the discharging power, and make the material uniformly enter the material collecting mechanism;

[0043] Disassembly and cleaning: after discharging, the end cover is opened again, the cylinder is detached from the inlet-outlet disc, the grinding beads in the grinding cavity are poured out, and then the grinding rotor and the discharge stator are sequentially detached, the grinding rotor and the discharge stator are separated, and each structure is cleaned.

[0044] Since the discharge stator is connected and fixed with the inlet-outlet disc, the grinding rotor is connected and fixed with the power main shaft and the connection is located at the end away from the inlet-outlet disc, the discharge stator and the grinding rotor are not connected with the cylinder and the end cover in the grinding cylinder, the cylinder and the end cover can be completely detached during disassembly, the grinding rotor and the discharge stator are detached after the grinding beads are completely discharged, and the risk of grinding bead jamming is completely eliminated.

[0045] Compared with the prior art, the present application has the following advantages:

[0046] (1) The grinding mechanism of the application realizes the grinding of materials, first, compared with the conventional single dynamic discharge port, the first discharge groove group and the second discharge groove group are arranged on the grinding rotor and the discharge stator respectively, and the first discharge groove group and the second discharge groove group are arranged in a staggered manner, so that the materials can fall into the discharge space along multiple paths during dynamic discharge, greatly reducing the possibility of material congestion. Secondly, by setting the auxiliary discharge stirring structure, on the basis of the power main shaft providing power to the grinding rotor, the kinetic energy of the power main shaft is fully utilized to stir the materials in the discharge space, greatly reducing the possibility of material deposition. Compared with the conventional static filter screen or filter screen cylinder, the dynamic auxiliary discharge stirring structure in the application can more effectively provide materials to the discharge pipe, facilitate the discharge of the discharge pipe, and thus improve the discharge efficiency.

[0047] (2) The grinding medium can be uniformly distributed in the grinding cavity. During the operation of the grinding rotor, the space linear velocity between the outer wall of the grinding rotor and the inner wall of the grinding cavity is the highest, and the kinetic energy (relative speed) between the materials and the grinding medium is the largest, which can greatly improve the utilization rate of kinetic energy. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 It is the overall front view of the pre-grinder of the application;

[0049] Figure 2 It is the overall schematic view of the grinding mechanism of the application;

[0050] Figure 3 It is the grinding mechanism in Figure 2 partially cutaway view;

[0051] Figure 4 It is the structural schematic view of the grinding mechanism of the application after hiding the cylinder;

[0052] Figure 5 It is the side view of the grinding mechanism in Figure 2 ;

[0053] Figure 6 It is the sectional view along the A-A line in Figure 5 ;

[0054] Figure 7 It is the sectional view along the B-B line in Figure 5 ;

[0055] Figure 8 It is the structural schematic view of the grinding mechanism of the application after hiding the cylinder, the grinding rotor and the discharge stator.

[0056] Fig. 1 is a frame; 2 is a grinding mechanism; 3 is a grinding cylinder; 31 is a cylinder body; 32 is an end cover; 33 is a grinding cavity; 34 is a sandwich cavity; 341 is an inlet pipe; 342 is an outlet pipe; 4 is an inlet and outlet disc; 41 is an inlet pipe; 42 is an outlet pipe; 43 is a transfer cavity; 5 is a power spindle; 6 is an outlet stator; 61 is an annular fixed part; 62 is a second outlet groove group; 7 is a grinding rotor; 71 is a stirring rod group; 72 is a first outlet groove group; 8 is an auxiliary outlet stirring structure; 81 is a spiral sleeve; 82 is an outlet impeller; 9 is an inlet pump; 10 is a check valve; 11 is an outlet space. DETAILED DESCRIPTION

[0057] The application will be further described in conjunction with the embodiments and drawings, but the embodiments of the application are not limited thereto.

[0058] A high-efficiency outlet pre-grinder, such as Figure 1 , comprises a frame 1, the frame 1 is provided with a grinding mechanism 2, the frame 1 serves as a support structure of the grinding mechanism 2, so that the grinding machine can be in a stable state during operation.

[0059] The grinding mechanism 2 is a component that actually performs the grinding operation, which can not only complete the grinding action but also complete the inlet and outlet of the material. For this purpose, the grinding mechanism 2 comprises a grinding cylinder 3, an inlet and outlet disc 4, a power spindle 5, an outlet stator 6, a grinding rotor 7, and an auxiliary outlet stirring structure 8, which can improve the grinding efficiency and the outlet efficiency under the cooperation of the above-mentioned components.

[0060] Among them, in combination with Figure 2 and Figure 3 , the grinding cylinder 3 is in the shape of a cylinder as a whole, and in the mechanical structure, it comprises a cylinder body 31 and an end cover 32, both ends of the cylinder body 31 are integrally formed with mounting plates with an outer diameter larger than the body of the cylinder body 31, and the end cover 32 is detachably fixedly connected with one of the mounting plates by means of screws, and the screws are circumferentially arranged, which facilitates the installation and disassembly of the cylinder body 31 and the end cover 32. Therefore, one end of the grinding cylinder 3 is closed by the end cover 32, and the other end is open, and a grinding cavity 33 is formed in the interior of the grinding cylinder 3 for accommodating the materials to be ground and the grinding medium, and in the grinding cavity 33, the power spindle 5, the outlet stator 6, the grinding rotor 7 and other structures cooperate to realize the grinding and outlet operation.

[0061] As Figure 3, the outer circle of the grinding cavity 33 in the barrel 31 is provided with a sandwich cavity 34, the sandwich cavity 34 is independently arranged with the grinding cavity 33, the outer wall of the barrel 31 is provided with a communication pipe 341 and a lead-out pipe 342 which are communicated with the sandwich cavity 34, the communication pipe 341 is used for realizing the communication of the sandwich cavity 34 with the material, and the lead-out pipe 342 is used for leading out the material in the sandwich cavity 34. Therefore, the sandwich cavity 34 can be communicated with the gas or liquid with a certain temperature, so as to improve the temperature of the material in the grinding cavity 34 or reduce the temperature of the material in the grinding cavity 34, and ensure the temperature parameter required for grinding.

[0062] It should be noted that, generally, the sandwich cavity 34 is communicated with cooling water, because a large amount of heat is generated during grinding, and the cooling water is needed to take away the heat, and it is not excluded that some processes require heating, at this time, the sandwich cavity 34 can also be communicated with high-temperature liquid to achieve the effect of heating.

[0063] Secondly, as Figure 2 and Figure 3 , the inlet and outlet disc 4 is in the form of a disc, and the end of the grinding cylinder 3 is also detachably fixedly connected by screws. The center of the inlet and outlet disc 4 is provided with a coaxially arranged center through hole, and the inlet and outlet disc 4 is respectively provided with a feeding channel and a discharging channel, the feeding channel is used for feeding the material into the grinding cavity 33, and the discharging channel is used for discharging the ground material, specifically, the inlet and outlet disc 4 is embedded with a feeding pipe 41 and a discharging pipe 42 which are independently arranged. For the feeding pipe 41, the feeding pipe 41 is externally connected with a feeding pump 9, the type and model of the feeding pump 9 can be selected according to different types of materials, and no specific limitation is made. A one-way valve 10 is arranged near the feeding port of the feeding pipe 41 to ensure that the grinding medium does not flow back to the feeding pipe 41 and the feeding pump 9 during normal operation; for the discharging pipe 42, the discharging pipe 42 can be communicated with a material collecting mechanism, the material collecting mechanism can adopt a suitable collecting container to uniformly collect the ground material for storage.

[0064] Secondly, the power spindle 5 as a power providing device can realize the rotary motion around its own axis through the motor and the speed regulating device. As Figure 2 , one end of the power spindle 5 extends into the grinding cavity 33 from the center through hole of the inlet and outlet disc 4, and provides rotary power for the grinding operation of the grinding rotor 7 in the grinding cavity 33.

[0065] In this embodiment, the grinding rotor 7 and the power spindle 5 are detachably fixedly connected at the end of the grinding cavity 33, as shown in Figure 3 , one end of the grinding rotor 7 which is closed is coupled with the power spindle 5 through a key, and the coupling point is away from the inlet and outlet disc 4. As Figure 4The outer wall of the grinding rotor 7 is provided with a stirring rod group 71, which includes a plurality of rows of stirring rods arranged axially along the grinding rotor 7, and each row of stirring rods includes a plurality of stirring rods uniformly spaced apart, one end of each stirring rod being fixedly embedded in the grinding rotor 7. During the rotation of the grinding rotor 7 driven by the power spindle 5, the stirring rod group 71 is rotated, and the linear speed generated can stir the material with large particles deposited in the grinding cavity 33, so as to force the material to move and contact the grinding beads for further grinding.

[0066] In combination Figure 3 , Figure 5 , Figure 6 The inner wall of the grinding rotor 7 is used to install the discharge stator 6 together with the power spindle 5. The discharge stator 6 is open at both ends, and when the discharge stator 6 is coaxially sleeved between the grinding rotor 7 and the power spindle 5, one end of the discharge stator 6 extends to form an annular fixing portion 61 at the central through hole of the feeding and discharging disc 4, and the annular fixing portion 61 is coupled to the feeding and discharging disc 4 through a key to achieve detachable fixed connection.

[0067] As Figure 7 An intermediate cavity 43 is formed between the outer wall of the annular fixing portion 61 and the feeding pipe 41, which is in communication with the grinding cavity 33, so as to realize the conduction of the feeding channel. Therefore, the material entering the feeding pipe 41 first passes through the intermediate cavity 43, and as the weight increases, the material gradually falls into the grinding cavity 33. In addition, a connecting hole is formed in the outer wall of the annular fixing portion 61, through which the discharge pipe 42 passes, so as to realize the conduction of the discharge channel.

[0068] As Figure 3 A discharge space 11 is formed between the discharge stator 6 and the power spindle 5, which is in communication with the discharge channel, and the ground material falls into the discharge space 11, then passes through the annular fixing portion 61, and finally exits from the discharge pipe 42.

[0069] Through the structural design, the feeding and discharging of the material do not interfere with each other, and the positional relationship of the feeding and discharging disc 4 and the discharge stator 6 is effectively utilized for structural arrangement.

[0070] It should be noted that, as shown in FIG. 6, the outer walls of the grinding rotor 7 and the discharge stator 6 are respectively provided with a first discharge groove group 72 and a second discharge groove group 62. The first discharge groove group 72 includes a plurality of rows of first discharge grooves, and each row of first discharge grooves includes a plurality of first discharge grooves arranged around the outer wall of the grinding rotor 7, and the first discharge grooves do not interfere with the stirring rods. The second discharge groove group 62 includes a plurality of rows of second discharge grooves, and each row of second discharge grooves includes a plurality of second discharge grooves arranged around the outer wall of the discharge stator 6.

[0071] The first discharge trough group 72 and the second discharge trough group 62 are staggered and distributed. As a multi-row trough structure, the first discharge trough group 72 and the second discharge trough group 62 enable the material being ground in the grinding chamber 33 to have multiple discharge paths when it is dynamically discharged. Each discharge path is a dynamic and static ring trough structure, which can realize the large flow of material into the discharge space 11 and reduce the risk of material blockage.

[0072] To reduce material accumulation in the discharge space 11, such as Figure 3 and Figure 8 The auxiliary discharge agitation structure 8 is located in the discharge space 11. The auxiliary discharge agitation structure 8 specifically includes a spiral sleeve 81 and a discharge impeller 82. Both the spiral sleeve 81 and the discharge impeller 82 are fixed on the outer wall of the power main shaft 5. The difference is that the spiral sleeve 81 is located between the discharge stator 6 and the power main shaft 5. The length of the spiral sleeve 81 is less than or equal to the length of the discharge stator 6. The discharge impeller 82 is arranged adjacent to the spiral sleeve 81 and is located in the annular fixed part 61.

[0073] Therefore, the spiral structure on the outer surface of the spiral sleeve 81 can agitate the material covered by the spiral sleeve 81 in the discharge space 11 while rotating. At the same time, the discharge impeller 82 can agitate the material in the internal space of the annular fixing part 61. The material at the annular fixing part 61 is closest to the discharge pipe 42, which greatly reduces the possibility of material deposition below the discharge pipe 42.

[0074] In summary, the working principle of this type of grinding machine is as follows:

[0075] After selecting suitable grinding media and placing them into the grinding chamber 33, the material to be ground enters the grinding chamber 33 in the grinding cylinder 3 through the feeding channel. Power is provided by the main shaft 5. Since the grinding rotor 7 is fixed to the main shaft 5 and the discharge stator 6 is fixed to the infeed / outfeed disc 4, when the main shaft 5 rotates, the grinding rotor 7 rotates relative to the discharge stator 6. During the operation of the grinding rotor 7, the spatial linear velocity between the outer wall of the grinding rotor 7 and the inner wall of the grinding chamber 33 is the highest, and the dynamic velocity between the material and the grinding media is also highest. With maximum relative speed, the utilization rate of kinetic energy can be greatly improved. As the grinding rotor 7 runs, the material being ground is dynamically discharged. First, it falls from the first discharge trough group 72 into the space between the grinding rotor 7 and the discharge stator 6, and then falls from the second discharge trough group 62 on the discharge stator 6 into the discharge space 11. The auxiliary discharge stirring structure 8 in the discharge space 11 can stir the accumulated material, increase the discharge power, and greatly reduce the possibility of material deposition in the discharge space 11, making it easier for the material to leave the feed and discharge trays 4 from the discharge channel.

[0076] It should be noted that the grinder is used in a continuous working mode, the feeding power of the material into the grinding cavity 33 is provided by the feeding pump 9, the discharging power is also provided by the feeding pump 9, and the auxiliary discharging stirring structure 8 also increases the discharging power, thereby reducing the possibility of material deposition.

[0077] The grinding medium is generally a grinding bead, and the size of the grinding bead is set according to the type of the material, and is not specifically limited. The rotation and rolling movement of the grinding bead cause the grinding bead to contact the surface of the material and generate collision and friction force. These forces help the grinding bead to crush and grind the particles of the material, thereby refining the material.

[0078] In addition, the present application also provides a working method of the grinder, which comprises the following steps:

[0079] Loading grinding beads: a sufficient number of grinding beads are put into the grinding cavity 33 from the feeding pipe 41 on the feeding and discharging disc 4;

[0080] Feeding: the feeding pump 9 is connected to the feeding pipe 41 on the feeding and discharging disc 4, and a one-way valve 10 is arranged near the feeding port of the feeding pipe 41. The feeding pump 9 is started, and the material sequentially passes through the feeding pipe 41, the transfer cavity 43, and finally enters the grinding cavity 33;

[0081] Grinding: the power main shaft 5 is started, the grinding rotor 7 rotates with the power main shaft 5, and the stirring rod group 71 simultaneously stirs the material and the grinding beads in the grinding cavity 33. The grinding beads grind the material, and the material ground to a certain specification sequentially passes through the first discharge groove group 72 and the second discharge groove group 62 and enters the discharging space 11;

[0082] Discharging: after a certain period of grinding, the material in the discharging space 11 is gradually transferred to the discharging pipe 42 under the power of the feeding pump 9. At the same time, the discharging impeller 82 and the spiral sleeve 81 rotate with the power main shaft 5 to stir the material, increase the discharging power, and make the material uniformly enter the material collecting mechanism;

[0083] Dismantling and cleaning: after discharging, the end cover 32 is opened again, the cylinder 31 is detached from the feeding and discharging disc 4, the grinding beads in the grinding cavity 33 are poured out, and then the grinding rotor 7 and the discharging stator 6 are sequentially detached, so that the grinding rotor 7 and the discharging stator 6 are separated, and each structure is convenient for cleaning.

[0084] Compared with the conventional method of fixing the discharging stator 6 on the end cover 32, the connection between the grinding rotor 7 and the power main shaft 5 is arranged near one end of the feeding and discharging disc 4. Before disassembly, the grinding beads cannot be completely discharged, so that the grinding beads are easily stuck between the first discharge groove group 72 and the second discharge groove group 62 when the discharging stator 6 and the end cover 32 are detached.

[0085] In the application, the discharge stator 6 is connected and fixed with the feeding and discharging disc 4, the grinding rotor 7 is connected and fixed with the power main shaft 5, and the connection is located at the end far from the feeding and discharging disc 4, the discharge stator 6, the grinding rotor 7 and the barrel body 31 and the end cover 32 in the grinding barrel 3 have no connection relationship, when disassembling, the barrel body 31 and the end cover 32 can be completely removed, the grinding rotor 7 and the discharge stator 6 are disassembled after the guarantee of the complete discharge of the grinding beads, and the risk of the grinding beads being stuck is completely eliminated.

[0086] The above is only the preferred embodiment of the application, the protection scope of the application is not limited to the above-mentioned embodiment, and any technical scheme belonging to the idea of the application belongs to the protection scope of the application. It should be pointed out that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the application should be considered as the protection scope of the application.

Claims

1. A high-efficiency discharge pre-mill comprising a frame (1), characterized in that, A rack (1) is provided with a grinding mechanism (2); The grinding mechanism (2) comprises: A grinding cylinder (3) is internally formed with a grinding cavity (33), one end of which is closed and the other end is open; An inlet and outlet disc (4) is detachably and fixedly connected with the end of the grinding cylinder (3) which is open, and the inlet and outlet disc (4) is formed with an inlet channel and an outlet channel respectively, and the inlet channel is in communication with the grinding cavity (33); A power main shaft (5) extends into the grinding cavity (33) from the center through hole of the inlet and outlet disc (4), and can rotate around its own circumference; An outlet stator (6) is detachably and fixedly connected with the inlet and outlet disc (4) and coaxially arranged on the outer wall of the power main shaft (5), and an outlet space (11) is formed between the outlet stator (6) and the power main shaft (5), and the outlet space (11) is in communication with the outlet channel; A grinding rotor (7) is detachably and fixedly connected with the end of the power main shaft (5) in the grinding cavity (33) and coaxially arranged on the outer wall of the outlet stator (6); An auxiliary outlet stirring structure (8) comprises a spiral sleeve (81) fixed on the outer wall of the power main shaft (5) and arranged in the outlet space (11) and linked with the power main shaft (5). Wherein, the outer walls of the grinding rotor (7) and the outlet stator (6) are respectively provided with a first outlet groove group (72) and a second outlet groove group (62), and the first outlet groove group (72) and the second outlet groove group (62) are distributed in a staggered manner.

2. A high-efficiency discharge pre-mill according to claim 1, characterized in that, The outlet stator (6) extends to form an annular fixed part (61) at the center through hole of the inlet and outlet disc (4), and the inlet and outlet disc (4) is embedded with an inlet pipe (41) and an outlet pipe (42) arranged independently; The inlet pipe (41) and the outer wall of the annular fixed part (61) form a transfer cavity (43) in communication with the grinding cavity (33), and the outlet pipe (42) is in communication with the outlet space (11) after passing through the annular fixed part (61).

3. A high-efficiency discharge pre-mill according to claim 2, characterized in that, The outlet pipe (42) can be in communication with a material collecting mechanism.

4. A high-efficiency discharge pre-mill according to claim 3, characterized in that, The outer wall of the grinding rotor (7) is protrusively provided with an array of stirring rod groups (71).

5. A high-efficiency discharge pre-mill according to claim 4, characterized in that, The first outlet groove group (72) comprises a plurality of first outlet grooves arranged on the outer wall of the grinding rotor (7); The second outlet groove group (62) comprises a plurality of second outlet grooves arranged on the outer wall of the outlet stator (6).

6. A high-efficiency discharge pre-mill according to claim 5, characterized in that, The length of the spiral sleeve (81) is less than or equal to the length of the outlet stator (6).

7. A high-efficiency discharge pre-mill according to claim 6, characterized in that The auxiliary outlet stirring structure (8) further comprises an outlet impeller (82) fixed on the outer wall of the power main shaft (5), and the outlet impeller (82) is arranged adjacent to the spiral sleeve (81).

8. A high-efficiency discharge pre-mill according to claim 7, characterized in that, The grinding cylinder (3) comprises a cylinder body (31) and an end cover (32), and the end cover (32) is detachably and fixedly connected with the cylinder body (31) by screws.

9. A high-efficiency discharge pre-mill according to claim 8, characterized in that, The cylinder body (31) is provided with a sandwich cavity (34) which is independently arranged with the grinding cavity (33); The outer wall of the cylinder body (31) is provided with a lead-in pipe (341) and a lead-out pipe (342) in communication with the sandwich cavity (34).

10. A method of operation of a high-efficiency discharge pre-mill according to claim 9, characterized by, The method comprises the following steps: Loading grinding beads: from the inlet tube (41) on the inlet and outlet tray (4), put enough grinding beads into the grinding cavity (33); Feeding: connect the feeding pump (9) to the inlet tube (41) on the inlet and outlet tray (4), and set a one-way valve (10) near the inlet of the inlet tube (41), start the feeding pump (9), and the material passes through the inlet tube (41), the transfer cavity (43) and finally enters the grinding cavity (33); Grinding: start the power spindle (5), the grinding rotor (7) rotates with the power spindle (5), the stirring rod group (71) stirs the material and grinding beads in the grinding cavity (33) at the same time, the grinding beads grind the material, and the material ground to a certain specification passes through the first discharge groove group (72) and the second discharge groove group (62) in turn and enters the discharge space (11); Discharging: after a certain period of grinding, the material in the discharge space (11) is gradually transferred to the discharge tube (42) under the power of the feeding pump (9), at the same time, the discharge impeller (82) and the spiral sleeve (81) rotate with the power spindle (5) to stir the material, increase the discharge power, and make the material enter the material collecting mechanism uniformly; Dismantling and cleaning: after discharging, open the end cover (32) again, remove the cylinder (31) from the inlet and outlet tray (4), pour out the grinding beads in the grinding cavity (33), and then remove the grinding rotor (7) and the discharge stator (6) in turn, separate the grinding rotor (7) and the discharge stator (6), and clean each structure.

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