A central feed mill dynamic separator

Abstract

The application relates to the technical field of dynamic separators, and discloses a center-feeding mill dynamic separator which can adjust the relative position between a lifting flow guide cover and a neck-gradually-changing ring according to the fineness requirement of specific materials, thereby forming the adjustment of the separation fineness of the materials, has a wider application range, better linkage between parts, simpler and more convenient adjustment operation and better practicality, and comprises a separator body, a lifting flow guide cover, a fitting cylinder, a center feeding cylinder, a rotary mounting cylinder, a variable frequency motor, a prismatic section, a plurality of centrifugal linkage structures and a neck-gradually-changing ring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dynamic separator, in particular to a center feeding mill dynamic separator. BACKGROUND

[0002] It is known that the mill dynamic separator is an important component of the grinding machine, which is used for separating the powder after the material is ground by the grinding machine. When the grinding machine is working, the material is ground into powder by the principle of impact, extrusion and grinding. The dynamic separator rotates through the driving shaft, so that the filter part fixedly connected to the bottom end separates the powder, and the powder meeting the fineness requirement is screened into the subsequent system, and the powder not meeting the requirement is returned to the grinding machine for further grinding.

[0003] According to the search, the patent with the Chinese patent application number CN201520845836.1 discloses a vertical mill separator, which is generally described as including a mill body, a mill cover, a motor and a rotor. The mill cover is arranged at the upper end of the mill body, and the rotor is arranged at the communication between the mill body and the mill cover. The motor is rotatably connected with the rotor through a transmission mechanism. The mill cover is provided with a suction pipe, and there is a gap between the upper end of the rotor and the corresponding mill cover. An annular baffle extending to the center of the rotor is arranged on the mill cover at the gap. A downward annular protrusion is arranged on the inner side of the annular baffle, and the annular protrusion is in contact with the outer side of the upper end of the rotor. When in use, it can effectively prevent large particles of powder from entering the suction pipe from the gap between the rotor and the mill cover, thereby improving the constant particle size of the powder. The patent with the Chinese patent application number CN201820807858.2 discloses a sand mill separator with cleaning function, which is generally described as including a separator body. A sealing plate is fixedly installed at the bottom end of the separator body. A connecting pipe is arranged at the axial position of the separator body. One end of the connecting pipe extends to the top of the separator body, and a cross-shaped mounting bracket is fixedly installed at one end of the connecting pipe. Brush plates are fixedly installed at the symmetrical two ends of the mounting bracket. Water spray pipes are fixedly installed at the other two ends of the mounting bracket. Two guide rods are fixedly installed at the bottom end of the sealing plate. An installation plate is movably installed on the two guide rods. Springs are sleeved on the guide rods. One end of the spring is fixedly connected with the bottom end of the sealing plate, and the other end of the spring is fixedly connected with the top end of the installation plate. The other end of the connecting pipe penetrates through the sealing plate, and the other end of the connecting pipe is rotatably installed with the installation plate through a bearing.

[0004] The above-mentioned prior art scheme can form material separation, but both schemes are relatively fixed structures, so the separation fineness of the material is relatively fixed, and the practicality needs to be further improved, and the universality needs to be further strengthened. SUMMARY

[0005] In view of the deficiencies of the prior art, the application provides a center-feeding mill dynamic separator, which can adjust the relative position between a lifting flow guide cover and a neck-gradually-changing ring according to the fineness requirement of specific materials, thereby forming the adjustment of the separation fineness of the materials, has a wider application range, better linkage between parts, simpler and more convenient adjustment operation and better practicality.

[0006] To achieve the above object, the application provides the following technical scheme: a center-feeding mill dynamic separator, comprising a separator body, further comprising a lifting flow guide cover, the separator body comprises an assembly cylinder, a center feeding cylinder is installed in the assembly cylinder, a rotary mounting cylinder is rotatably connected in the assembly cylinder, the rotary mounting cylinder is arranged outside the center feeding cylinder, a variable frequency motor is installed outside the assembly cylinder, the variable frequency motor is used for driving the rotation of the rotary mounting cylinder, a prismatic section is arranged outside the rotary mounting cylinder, the lifting flow guide cover is installed outside the prismatic section, a plurality of centrifugal linkage structures are installed between the lifting flow guide cover and the rotary mounting cylinder, a neck-gradually-changing ring is fixedly connected in the assembly cylinder, the bottom end of the neck-gradually-changing ring is fixedly connected with an isolation material guiding ring, and a side-mounted material discharging inclined pipe is communicated outside the assembly cylinder.

[0007] Preferably, each of the plurality of centrifugal linkage structures comprises a linkage rotary frame and a rotary connecting frame, a plurality of installation grooves are formed in the prismatic section, the plurality of linkage rotary frames are rotatably connected in the plurality of installation grooves respectively, a plurality of installation openings are formed in the lifting flow guide cover, the plurality of rotary connecting frames are rotatably connected in the plurality of installation openings respectively, guide sliding openings are formed in the plurality of rotary connecting frames respectively, the plurality of linkage rotary frames are slidably connected with the plurality of guide sliding openings respectively, and counterweight balls are fixedly connected to the ends of the plurality of linkage rotary frames away from the center feeding cylinder.

[0008] Preferably, the linkage rotary frame is rotatably connected with a first inner half ring, a second inner half ring, a first outer half ring and a second outer half ring, the first inner half ring and the second inner half ring are fixedly connected with each other, the first outer half ring and the second outer half ring are fixedly connected with each other, the first inner half ring, the second inner half ring, the first outer half ring and the second outer half ring are all installed with double-head cleaning brushes, an inner transmission rod is fixedly connected between the first inner half ring and the second inner half ring fixedly connected with each other, an outer transmission rod is fixedly connected between the first outer half ring and the second outer half ring fixedly connected with each other, a through slot is formed in the linkage rotary frame, and the inner transmission rod and the outer transmission rod both pass through the through slot.

[0009] Preferably, the two ends of each of the plurality of rotary connecting frames are fixedly connected with a stepped connecting ring, and the first inner half ring, the second inner half ring, the first outer half ring and the second outer half ring are all formed with stepped half ring grooves matched with the stepped connecting ring.

[0010] Preferably, the counterweight ball has an external opening slot and multiple connecting threaded holes. An elastic cleaning plate is inserted into the external opening slot, and each of the multiple connecting threaded holes is threaded with a clamping and positioning screw. The multiple clamping and positioning screws are used to clamp and position the elastic cleaning plate.

[0011] Preferably, a plurality of blade rods are fixedly connected inside the lifting and diverting hood, and the bottom end of each of the plurality of blade rods is provided with an inclined slope. A stepped sliding connecting cylinder is fixedly connected inside the plurality of blade rods. The stepped sliding connecting cylinder is slidably connected to the faceted section. A return spring is fixedly connected between the stepped sliding connecting cylinder and the rotary mounting cylinder. The stepped sliding connecting cylinder has a plurality of through slots, and the plurality of linkage rotating frames pass through the plurality of through slots respectively.

[0012] Preferably, each of the multiple linkage rotating frames is fixedly connected to a rotating cylinder, and each of the multiple rotating cylinders is provided with a rotating column. Multiple insertion slots are opened on the faceted section, and the multiple insertion slots are respectively connected to multiple mounting slots. The multiple rotating columns are respectively fixedly connected to the multiple insertion slots.

[0013] Preferably, the assembly cylinder includes a separation assembly cylinder, a guide assembly cylinder, and an electrical assembly cylinder. The separation assembly cylinder is fixedly connected to the guide assembly cylinder, and the guide assembly cylinder is fixedly connected to the electrical assembly cylinder. The necking gradient ring is fixedly connected inside the guide assembly cylinder. The central feed cylinder is fixedly connected to the electrical assembly cylinder. A transmission pulley is provided inside the electrical assembly cylinder and is fixedly connected to the rotary mounting cylinder. An external assembly frame is fixedly connected to the outside of the guide assembly cylinder. The variable frequency motor is mounted on the external assembly frame, and a drive pulley is mounted on the main shaft of the variable frequency motor. The drive pulley is connected to the transmission pulley via a V-belt.

[0014] Preferably, a crossbeam is fixedly connected inside the separation assembly cylinder, a central support ring is provided on the crossbeam, the central feed cylinder is fixedly inserted into the central support ring, and the rotary mounting cylinder is rotatably connected to the central support ring.

[0015] Preferably, an external flange ring is fixedly connected to the bottom end of the separation assembly cylinder, and the external flange ring has multiple assembly holes.

[0016] Compared with the prior art, the present invention provides a center-feed dynamic separator for mills, which has the following advantages:

[0017] (1) In this invention, the main structure of the mill dynamic separator with central feed is formed by the design of the separator body. The relative position between the lifting guide hood and the isolation guide ring can be adjusted according to the specific use requirements. While achieving material separation, the separation fineness is adjustable, and the use is more flexible.

[0018] (2) In this invention, by equipping the centrifugal linkage structure, the relative position between the lifting guide hood and the isolation guide ring can be adjusted by controlling the rotation speed of the rotary mounting cylinder, thereby realizing the control of the insertion length of the isolation guide ring relative to the lifting guide hood, and finally facilitating the adjustment of the fineness of material separation. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram showing a partial cross-section of the present invention;

[0020] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the local structure at point A;

[0021] Figure 3 For the present invention Figure 1 A magnified schematic diagram of the local structure at point B;

[0022] Figure 4 For the present invention Figure 1 A magnified schematic diagram of the local structure at point C;

[0023] Figure 5 This is a three-dimensional structural schematic diagram with another cross-sectional view of the present invention;

[0024] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the local structure at point D;

[0025] Figure 7 For the present invention Figure 5 A magnified schematic diagram of the local structure at point E;

[0026] Figure 8 This is a three-dimensional structural diagram of the entire invention;

[0027] Figure 9 This is a three-dimensional structural diagram of the cooperation between the lifting shroud, blade rod, and stepped sliding connecting cylinder of the present invention;

[0028] Figure 10 This is a three-dimensional structural diagram of the rotating mounting cylinder, faceted section, and rotating connecting column of the present invention.

[0029] Figure 11 This is a three-dimensional structural diagram of the linkage frame, the connecting frame, and the counterweight ball of the present invention.

[0030] Figure 12 This is a three-dimensional structural diagram showing the disassembled connection of the rotating frame, the first inner half ring, and the second inner half ring of the present invention.

[0031] Figure 13 This is a three-dimensional structural diagram of the entire invention from another angle;

[0032] Figure 14 is a schematic view of the bottom perspective structure of the whole application;

[0033] Figure 15 is a schematic view of the bottom perspective structure of the whole application; Figure 14 is a schematic view of the bottom perspective structure of the whole application;

[0034] Figure 16 is a schematic view of the bottom perspective structure of the whole application;

[0035] Figure 17 is a schematic view of the bottom perspective structure of the whole application.

[0036] In the figure: 1, lifting flow guide cover; 2, assembly cylinder; 3, center feeding cylinder; 4, rotary mounting cylinder; 5, variable frequency motor; 6, prismatic section; 7, necking gradual change ring; 8, isolation material guiding ring; 9, side-mounted discharge inclined pipe; 10, linkage trolley; 11, rotating connecting frame; 12, mounting groove; 13, mounting port; 14, guide sliding port; 15, counterweight ball; 16, first inner half ring; 17, second inner half ring; 18, first outer half ring; 19, second outer half ring; 20, double-head cleaning brush; 21, inner transmission rod; 22, outer transmission rod; 23, through slot port; 24, stepped connecting ring; 25, stepped half ring groove; 26, outer opening insertion slot; 27, connecting threaded hole; 28, elastic cleaning plate; 29, pressing positioning screw; 30, leaf bar; 31, inclined slope; 32, stepped sliding connecting cylinder; 33, return spring; 34, through strip slot; 35, rotating connecting cylinder; 36, rotating connecting column; 37, insertion slot; 38, separation assembly cylinder; 39, guiding assembly cylinder; 40, electrical assembly cylinder; 41, transmission pulley; 42, external assembly frame; 43, driving pulley; 44, cross frame; 45, middle supporting ring; 46, external mounting flange ring; 47, assembly hole. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0038] Embodiment, please refer to Figures 1-17The application discloses a center feeding mill dynamic separator, which comprises a separator body, a lifting flow guide cover 1, an assembly cylinder 2, a center feeding cylinder 3, a rotary mounting cylinder 4, a variable frequency motor 5, a prismatic section 6, a necking gradual change ring 7, an isolation material guiding ring 8, a plurality of centrifugal linkage structures, a plurality of installation grooves 12, a plurality of installation slots 13, a plurality of guide sliding openings 14 and a counterweight ball 15.

[0039] It needs to be further explained that the linkage rotating frame 10 is rotatably connected with the first inner half ring 16, the second inner half ring 17, the first outer half ring 18 and the second outer half ring 19, the first inner half ring 16 and the second inner half ring 17 are fixedly connected with each other, the first outer half ring 18 and the second outer half ring 19 are fixedly connected with each other, the first inner half ring 16, the second inner half ring 17, the first outer half ring 18 and the second outer half ring 19 are all installed with double-head cleaning brushes 20, the first inner half ring 16 and the second inner half ring 17 fixedly connected with each other are fixedly connected with an inner transmission rod 21, the first outer half ring 18 and the second outer half ring 19 fixedly connected with each other are fixedly connected with an outer transmission rod 22, the linkage rotating frame 10 is provided with a through slotted opening 23, the inner transmission rod 21 and the outer transmission rod 22 both penetrate through the through slotted opening 23, the two ends of the plurality of rotating connecting frames 11 are both fixedly connected with stepped connecting rings 24, the first inner half ring 16, the second inner half ring 17, the first outer half ring 18 and the second outer half ring 19 are all provided with stepped half ring grooves 25 matched with the stepped connecting rings 24, when the counterweight ball 15 is in a rotating state and bears a centrifugal force, the size of the centrifugal force borne by the counterweight ball 15 can be controlled by controlling the rotating speed, since the counterweight ball 15 is fixedly connected with the linkage rotating frame 10, and the end of the linkage rotating frame 10 far away from the counterweight ball 15 is installed in the installation groove 12, when the resultant force of the centrifugal force borne by the counterweight ball 15 and the supporting force of the rotating connecting column 36 on the linkage rotating frame 10 can overcome the overall gravity of the counterweight ball 15 and the linkage rotating frame 10, the counterweight ball 15 will have a tendency to rise, when the resultant force of the centrifugal force borne by the overall structure of the counterweight ball 15 and the linkage rotating frame 10 and the supporting force of the rotating connecting column 36 can overcome the overall gravity of the lifting drainage cover 1, the leaf strip rod 30, the stepped sliding connecting cylinder 32, the counterweight ball 15 and the linkage rotating frame 10, and can overcome the elastic force of the reset spring 33 and form compression on the reset spring 33, the lifting drainage cover 1 will have a tendency to relatively rise, during the rising process of the lifting drainage cover 1, the linkage rotating frame 10 will form relative movement with respect to the rotating connecting frame 11, since the through slotted opening 23 is arranged on the linkage rotating frame 10 and is driven by the inner transmission rod 21 and the outer transmission rod 22, the inner transmission rod 21 and the outer transmission rod 22 will be driven to move, then the overall structure formed by the first inner half ring 16 and the second inner half ring 17 will be driven to move, and the overall structure formed by the first outer half ring 18 and the second outer half ring 19 will also be driven to move, due to the limiting action of the stepped connecting ring 24, the overall structure formed by the first inner half ring 16 and the second inner half ring 17 only has the freedom to rotate with respect to the rotating connecting frame 11, and the overall structure formed by the first outer half ring 18 and the second outer half ring 19 also only has the freedom to rotate with respect to the rotating connecting frame 11, therefore, the overall structure formed by the first inner half ring 16 and the second inner half ring 17 driven by the inner transmission rod 21 will rotate with respect to the rotating connecting frame 11,The whole structure driven by the first outer half ring 18 and the second outer half ring 19 matched by the driving of the outer transmission rod 22 can form rotary drive relative to the rotary frame 11, and finally form the rotary drive of the double-head cleaning brush 20. Through the operation of the double-head cleaning brush 20, the auxiliary cleaning of the lifting flow guide cover 1 can be formed, so as to ensure the smooth material flow between the lifting flow guide cover 1 and the separation assembly cylinder 38 and the gap between the lifting flow guide cover 1 and the isolation material ring 8. Avoiding the decrease of the material flow gap or even the occurrence of the blockage due to the material accumulation, the outer opening slot 26 is arranged on the counterweight ball 15, the elastic cleaning plate 28 is inserted into the outer opening slot 26, a plurality of connecting threaded holes 27 are arranged on the counterweight ball 15, the compression positioning screw rod 29 is threadedly connected in the plurality of connecting threaded holes 27, and the plurality of compression positioning screw rods 29 are used for the compression positioning of the elastic cleaning plate 28. The elastic cleaning plate 28 is installed outside the counterweight ball 15, and the inner surface of the separation assembly cylinder 38 can be cleaned.

[0040] It should be further pointed out that the lifting flow cover 1 is fixedly connected with a plurality of leaf bars 30, the bottom end of the plurality of leaf bars 30 is provided with an inclined slope 31, a plurality of leaf bars 30 are fixedly connected with a stepped sliding connecting cylinder 32, the stepped sliding connecting cylinder 32 is in sliding connection with the edge surface section 6, the stepped sliding connecting cylinder 32 is fixedly connected with a reset spring 33 between the stepped sliding connecting cylinder 32 and the rotary mounting cylinder 4, the stepped sliding connecting cylinder 32 is provided with a plurality of through grooves 34, a plurality of linkage rotary jibs 10 pass through the plurality of through grooves 34, forming the specific mounting structure of the lifting flow cover 1 on the edge surface section 6, so that the lifting flow cover 1 can have the freedom of relative sliding adjustment on the edge surface section 6, and at the same time, the rotation of the edge surface section 6 can also drive the lifting flow cover 1 to rotate, and the provision of the inclined slope 31 can also assist in pushing the air at the bottom of the lifting flow cover 1 downward, which can form an upward resistance to the material with relatively large particles on one hand, reduce the entry of the material with relatively large particles into the gap between the lifting flow cover 1 and the separation assembly cylinder 38, and also can assist in pushing the remaining material after being separated by the lifting flow cover 1 and the isolation material guiding ring 8 downward, thereby improving the passing efficiency of the material in the separation process, a plurality of linkage rotary jibs 10 are fixedly connected with a rotary connecting cylinder 35, a plurality of rotary connecting columns 36 are arranged in the plurality of rotary connecting cylinders 35, a plurality of insertion grooves 37 are formed on the edge surface section 6, the plurality of insertion grooves 37 are respectively in communication with the plurality of mounting grooves 12, and the plurality of rotary connecting columns 36 are respectively fixedly connected in the plurality of insertion grooves 37, so as to form a structural decomposition of the mounting structure between the linkage rotary jib 10 and the edge surface section 6, thereby facilitating the formation of the overall structure, the assembly cylinder body 2 includes a separation assembly cylinder 38, a guiding assembly cylinder 39 and an electrical assembly cylinder 40, the separation assembly cylinder 38 is fixedly connected with the guiding assembly cylinder 39, the guiding assembly cylinder 39 is fixedly connected with the electrical assembly cylinder 40, the neck-shrinking gradually changing ring 7 is fixedly connected in the guiding assembly cylinder 39, the center feeding cylinder 3 is fixedly connected with the electrical assembly cylinder 40, a transmission belt pulley 41 is arranged in the electrical assembly cylinder 40, the transmission belt pulley 41 is fixedly connected with the rotary mounting cylinder 4, an external assembly frame 42 is fixedly connected outside the guiding assembly cylinder 39, the variable frequency motor 5 is mounted on the external assembly frame 42, a drive belt pulley 43 is mounted on the main shaft of the variable frequency motor 5, the drive belt pulley 43 is in transmission connection with the transmission belt pulley 41 through a V-belt, the side-mounted discharge inclined pipe 9 is in communication with the guiding assembly cylinder 39, a cross frame 44 is fixedly connected in the separation assembly cylinder 38, a middle supporting ring 45 is arranged on the cross frame 44, the center feeding cylinder 3 is fixedly inserted into the middle supporting ring 45, the rotary mounting cylinder 4 is in rotary connection with the middle supporting ring 45, an external flange ring 46 is fixedly connected at the bottom end of the separation assembly cylinder 38, a plurality of assembly holes 47 are formed on the external flange ring 46, when the separation assembly cylinder 38 is assembled into the grinding machine, assembly bolts outside the assembly holes 47 are inserted, and the assembly of the overall grinding machine dynamic separator of the center feeding can be realized by the assembly bolts outside.

[0041] The variable frequency motor 5 in the embodiment is a conventional device known to those skilled in the art, which is purchased on the market, and the present application only uses it without improving its structure and function. Its setting mode, installation mode and electrical connection mode can be operated by those skilled in the art according to the requirements of its instruction manual, which will not be described here.

[0042] In summary, the working principle of the center feeding mill dynamic separator is as follows. First, the center feeding mill dynamic separator is assembled relative to the grinding machine. After assembly, the bottom of the separation assembly cylinder 38 is communicated with the top discharge port of the grinding machine. Then, the center feeding cylinder 3 is communicated with the material feeding channel. The feeding channel forms the feeding of the external material to be ground relative to the center feeding cylinder 3. Then, the collection guide pipe is installed with the side-mounted discharge inclined pipe 9 to facilitate the guidance and collection of the screened material. In actual operation, the variable frequency motor 5 is connected to the power supply. After the variable frequency motor 5 is powered on, the rotation of the main shaft can drive the rotation of the drive pulley 43. Through the transmission of the V-belt, the rotation of the drive pulley 43 can drive the rotation of the transmission pulley 41. The rotation of the transmission pulley 41 can drive the rotation of the rotary installation cylinder 4. The rotation of the rotary installation cylinder 4 can drive the rotation of the lifting flow guide cover 1 through the prism section 6. The synchronous rotation of the lifting flow guide cover 1 and the prism section 6 can realize the synchronous rotation of the plurality of centrifugal linkage structures. During the rotation of the centrifugal linkage structure, the synchronous rotation speed of the prism section 6 and the lifting flow guide cover 1 is controlled by adjusting the rotation speed of the variable frequency motor 5, thereby adjusting the insertion depth of the isolation material guide ring 8 relative to the lifting flow guide cover 1. When the material needs to be ground, the grinding machine is started and runs smoothly. The material to be ground is fed into the center feeding cylinder 3. The material in the center feeding cylinder 3 falls along the center feeding cylinder 3 under the action of its own gravity, and finally reaches the feeding of the grinding machine. The material fed into the grinding machine is crushed and ground in the grinding machine. Because the grinding machine is equipped with a blowing system, air flows from the grinding machine to the assembly cylinder 2 during actual operation. The air flow carries the ground powder from the grinding machine to the assembly cylinder 2. The powder in the separation assembly cylinder 38 passes through the gap between the separation assembly cylinder 38 and the lifting flow guide cover 1, and enters the isolation material guide ring 8 guided by the lifting flow guide cover 1. Finally, the powder is discharged through the side-mounted discharge inclined pipe 9 guided by the guide assembly cylinder 39, thereby completing the separation of the powder.

[0043] As shown in FIG. 1, the center feeding mill dynamic separator comprises a grinding machine 2, a center feeding cylinder 3, a separation assembly cylinder 38, a guide assembly cylinder 39, a side-mounted discharge inclined pipe 9, a lifting flow guide cover 1, a prism section 6, a rotary installation cylinder 4, a variable frequency motor 5, a drive pulley 43, a transmission pulley 41, and a motor base 10. Figure 17The trajectory diagram of the powder flowing and separating through the lifting flow guide cover 1 is shown, wherein the curved arrow at the top of the lifting flow guide cover 1 is the direction of the movement of the material to be separated along with the air flow, wherein the curved arrow at the bottom of the isolation material guiding ring 8 is the direction of the movement of the powder separated out along with the air flow, wherein the inclined arrow is the direction of the backflow of the remaining material in the lifting flow guide cover 1, and as the rotation speed of the rotary mounting cylinder 4 is higher, the centrifugal force borne by the counterweight ball 15 is also larger, so the lifting height of the lifting flow guide cover 1 relative to the isolation material guiding ring 8 is also larger, that is, the insertion depth of the isolation material guiding ring 8 relative to the lifting flow guide cover 1 is larger, and the separation gap between the lifting flow guide cover 1 and the central feeding cylinder 3 is smaller, so the acceleration distance of the material bypassing the lifting flow guide cover 1 is larger, and the speed of the material to be separated is also increased, and the particle size of the separated material is smaller, that is, the relative insertion of the isolation material guiding ring 8 relative to the lifting flow guide cover 1 is deeper, and the particle size of the powder separated out is smaller. In order to ensure the smooth discharge of the powder from the side-mounted discharge inclined pipe 9 and reduce the accumulation of the powder in the guide assembly cylinder 39, a suction force is applied to the side-mounted discharge inclined pipe 9, so that the guide assembly cylinder 39 is in a proper negative pressure state to ensure the active discharge of the powder after the separation, and when the grinding machine is running, the power supply of the variable frequency motor 5 should be cut off after the grinding machine completes the work and stops, so that the rotation of the rotary mounting cylinder 4 is disabled, and as the rotation speed of the rotary mounting cylinder 4 decreases, the lifting flow guide cover 1 also falls relative to the isolation material guiding ring 8. During this process, the linkage rotating frame 10 and the rotating connecting frame 11 also move relative to each other, and under the transmission between the inner transmission rod 21 and the through slot 23 and the transmission between the outer transmission rod 22 and the through slot 23, the double-head cleaning brush 20 located on both sides of the lifting flow guide cover 1 moves relative to the lifting flow guide cover 1, so as to clean the lifting flow guide cover 1. This stage corresponds to the process of starting the variable frequency motor 5, that is, when the variable frequency motor 5 is started to make the lifting flow guide cover 1 relatively higher, the rotating direction of the double-head cleaning brush 20 is opposite, and during the height change of the lifting flow guide cover 1, the relative inclination of the rotating connecting frame 11 in the mounting port 13 also changes, so that the inclination of the double-head cleaning brush 20 also changes. The bidirectional rotation and inclination change of the double-head cleaning brush 20 can better assist in cleaning the two sides of the lifting flow guide cover 1, and the cleaning effect is better. The overall separation stability of the center feeding grinding machine is also more guaranteed.

[0044] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A central feed mill dynamic separator comprising a separator body, characterised in that, Also include lifting drainage cover (1), the separator body includes assembly cylinder (2), the center feeding cylinder (3) is installed in the assembly cylinder (2), the assembly cylinder (2) is rotatably connected with the convolution installation cylinder (4), the convolution installation cylinder (4) is arranged outside the center feeding cylinder (3), the variable frequency motor (5) is installed outside the assembly cylinder (2), the variable frequency motor (5) is used for the rotation drive of convolution installation cylinder (4), the convolution installation cylinder (4) is provided with the prismatic section (6), the lifting drainage cover (1) is installed outside the prismatic section (6), a plurality of centrifugal linkage structures are installed between the lifting drainage cover (1) and the convolution installation cylinder (4), the necking gradual change ring (7) is fixedly connected in the assembly cylinder (2), the bottom end of the necking gradual change ring (7) is fixedly connected with the isolation material ring (8), the side-mounted discharge inclined pipe (9) is communicated outside the assembly cylinder (2); A plurality of the centrifugal linkage structures all include linkage rotary frame (10) and rotary frame (11), the prismatic section (6) is provided with a plurality of installation grooves (12), a plurality of the linkage rotary frame (10) is rotatably connected in a plurality of the installation grooves (12), a plurality of installation ports (13) are formed in the lifting drainage cover (1), a plurality of the rotary frame (11) is rotatably connected in a plurality of the installation ports (13), a plurality of the rotary frame (11) is all provided with guide sliding port (14), a plurality of the linkage rotary frame (10) is slidably connected with a plurality of the guide sliding port (14), a plurality of the linkage rotary frame (10) is all fixedly connected with the counterweight ball (15) away from the center feeding cylinder (3), a plurality of the leaf bar (30) is fixedly connected in the lifting drainage cover (1), the bottom end of a plurality of the leaf bar (30) is provided with inclined slope (31), a plurality of the leaf bar (30) is fixedly connected with the ladder sliding connection cylinder (32), the ladder sliding connection cylinder (32) is slidably connected with the prismatic section (6), the ladder sliding connection cylinder (32) and the convolution installation cylinder (4) are fixedly connected with the reset spring (33), the ladder sliding connection cylinder (32) is provided with a plurality of through strip grooves (34), a plurality of the linkage rotary frame (10) is respectively passed through a plurality of the through strip grooves (34).

2. A dynamic separator for a centrally fed mill according to claim 1, characterized in that, The linkage rotating frame (10) is rotatably connected with a first inner half ring (16), a second inner half ring (17), a first outer half ring (18) and a second outer half ring (19), the first inner half ring (16) and the second inner half ring (17) are fixedly connected with each other, the first outer half ring (18) and the second outer half ring (19) are fixedly connected with each other, the first inner half ring (16), the second inner half ring (17), the first outer half ring (18) and the second outer half ring (19) are all provided with double-head cleaning brushes (20), the first inner half ring (16) and the second inner half ring (17) which are fixedly connected with each other are fixedly connected with an inner transmission rod (21), the first outer half ring (18) and the second outer half ring (19) which are fixedly connected with each other are fixedly connected with an outer transmission rod (22), the linkage rotating frame (10) is provided with a through twisting strip opening (23), and the inner transmission rod (21) and the outer transmission rod (22) all penetrate through the through twisting strip opening (23).

3. A dynamic separator for a centrally fed mill according to claim 2, characterised in that, Both ends of the plurality of rotating connecting frames (11) are fixedly connected with a stepped connecting ring (24), and the first inner half ring (16), the second inner half ring (17), the first outer half ring (18) and the second outer half ring (19) are all provided with stepped half ring grooves (25) matched with the stepped connecting ring (24).

4. A dynamic separator for a centrally fed mill according to claim 3, characterised in that, The counterweight ball (15) is provided with an outer opening slot (26) and a plurality of connecting threaded holes (27), the outer opening slot (26) is provided with an elastic cleaning plate (28) inserted therein, and the plurality of connecting threaded holes (27) are all threadedly connected with compression positioning screws (29), and the plurality of compression positioning screws (29) are used for compression positioning of the elastic cleaning plate (28).

5. A dynamic separator for a centrally fed mill according to claim 4, characterized in that, The plurality of linkage rotating frames (10) are all fixedly connected with rotating connecting barrels (35), the plurality of rotating connecting barrels (35) are all provided with rotating connecting columns (36), the edge surface section (6) is provided with a plurality of insertion grooves (37), the plurality of insertion grooves (37) are respectively communicated with the plurality of mounting grooves (12), and the plurality of rotating connecting columns (36) are respectively fixedly connected in the plurality of insertion grooves (37).

6. A dynamic separator for a centrally fed mill according to claim 5, characterized in that, The assembly cylinder body (2) comprises a separation assembly cylinder (38), a guide assembly cylinder (39) and an electrical assembly cylinder (40), the separation assembly cylinder (38) is fixedly connected with the guide assembly cylinder (39), the guide assembly cylinder (39) is fixedly connected with the electrical assembly cylinder (40), the neck-tapered ring (7) is fixedly connected in the guide assembly cylinder (39), the center feeding barrel (3) is fixedly connected with the electrical assembly cylinder (40), the electrical assembly cylinder (40) is provided with a transmission pulley (41), the transmission pulley (41) is fixedly connected with the revolving mounting barrel (4), the guide assembly cylinder (39) is fixedly connected with an external assembly frame (42) outside, the variable frequency motor (5) is mounted on the external assembly frame (42), a driving pulley (43) is mounted on the main shaft of the variable frequency motor (5), and the driving pulley (43) is in transmission connection with the transmission pulley (41) through a V-belt.

7. A dynamic separator for a centrally fed mill according to claim 6, characterized in that, The separation assembly cylinder (38) is fixedly connected with a cross frame (44), the cross frame (44) is provided with a middle supporting ring (45), the center feeding cylinder (3) is fixedly inserted into the middle supporting ring (45), and the rotary mounting cylinder (4) is rotationally connected with the middle supporting ring (45).

8. A dynamic separator for a centrally fed mill according to claim 7, characterized in that, The bottom end of the separation assembly cylinder (38) is fixedly connected with an outer flange ring (46), and a plurality of assembly holes (47) are formed in the outer flange ring (46).

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