CN217431890U

CN217431890U - Grinder is smashed to low noise barite

Info

Publication number: CN217431890U
Application number: CN202220824632.XU
Authority: CN
Inventors: 王兰星; 王琦恒; 陈松
Original assignee: Ankang Hanbin District Dongxiang Mining Co
Current assignee: Ankang Hanbin District Dongxiang Mining Co
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-09-16
Anticipated expiration: 2032-04-11

Abstract

The utility model provides a grinder is smashed to low noise barite relates to barite processing technology field. Grinding device is smashed to low noise barite includes: the crushing device comprises a shell, wherein a feeding hopper, a crushing box and a transferring bin which are communicated with each other are sequentially arranged in the shell from top to bottom; the first grinding assembly is arranged in the shell and is communicated with the transfer bin, a second grinding assembly is arranged below the first grinding assembly, and a grinding motor for driving the first grinding assembly and the second grinding assembly to work is arranged on the second grinding assembly; and the insulating sleeve is used for reducing noise and insulating sound and is sleeved on the second grinding assembly, and silencing cotton is filled between the insulating sleeve and the inner wall of the shell. The utility model provides a grinder is smashed to low noise barite has the barite and grinds fully, and the abrasive grain is even, grinds the advantage that the noise is little.

Description

Grinder is smashed to low noise barite

Technical Field

The utility model relates to a barite processing technology field particularly, relates to a grinder is smashed to low noise barite.

Background

Barite is a non-metallic mineral product with barium sulfate as the main component, produced in low-temperature hydrothermal veins, such as quartz-barite veins, fluorite-barite veins, etc., and commonly coexisted with galena, sphalerite, chalcopyrite, cinnabar, etc. The barite belongs to a nonrenewable resource, is stable in chemical property, insoluble in water and hydrochloric acid, free of magnetism and toxicity, is usually thick plate-shaped or columnar crystals, and is mostly a dense block-shaped or plate-shaped or granular aggregate.

When using, the existing barite needs to utilize a grinding device, the ore to be excavated is crushed and screened and then ground, the existing grinding device utilizes a crushing roller to crush large ore layer by layer and then grinds, and when grinding, the existing grinding device causes the barite to be ground due to the uneven barite particles after crushing, the noise is too large, and the quality of the later-stage grinding particles is influenced.

Therefore, it is necessary to provide a new grinding device for crushing barite with low noise to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a grinder is smashed to low noise barite, it has the barite and grinds fully, and the abrasive grain is even, grinds the advantage that the noise is little.

A low noise barite crushing and grinding device comprises: the crushing device comprises a shell, wherein a feeding hopper, a crushing box and a transfer bin which are communicated with each other are sequentially arranged in the shell from top to bottom, two mutually-meshed crushing rollers are arranged in the crushing box, one ends of the two crushing rollers penetrate through a crushing box sleeve to be provided with worm wheels, the crushing box is positioned on the same side of the worm wheels and is rotatably provided with a worm, the worm is meshed with the two worm wheels, and a crushing motor for driving the worm to rotate is arranged on the side wall of the crushing box;

the first grinding assembly is arranged in the shell and communicated with the transfer bin, a second grinding assembly is arranged below the first grinding assembly, and a grinding motor for driving the first grinding assembly and the second grinding assembly to work is arranged on the second grinding assembly;

and the isolation sleeve is used for reducing noise and insulating sound and is sleeved on the second grinding assembly, and silencing cotton is filled between the isolation sleeve and the inner wall of the shell.

The utility model discloses an in some embodiments the transfer feed bin is hourglass hopper-shaped, and the funnel corner symmetry of transfer feed bin has seted up the annular and has led to the groove, and two annular lead to inslot all inlays and is equipped with the filter screen, and the lateral wall of transfer feed bin installs and is used for guiding the leading-in first kuppe of second grinding component of the filterable abrasive particle of filter screen.

In some embodiments of the present invention, the first grinding assembly includes a first grinding seat, a grinding ball and a transmission rod, the first grinding seat is fixedly connected to the bottom end of the transfer bin through a flange, and the inner side wall of the first grinding seat is uniformly provided with a plurality of grooves, the inner side wall of the first grinding seat is located at the bottom ends of the plurality of grooves and is provided with a discharge outlet, a second guiding cover for guiding the grinding particles discharged from the discharge outlet into the second grinding assembly is arranged below the discharge outlet on the outer side wall of the first grinding seat, the transmission rod is rotatably mounted on the first grinding seat, and the transmission rod is coaxially and fixedly connected to the output shaft of the grinding motor; the transmission rod is fixedly provided with a grinding ball, and the outer side wall of the grinding ball is provided with a convex ring matched with the plurality of grooves.

In some embodiments of the present invention, the gap between the convex ring of the plurality of grooves and the plurality of adaptations is gradually decreased from top to bottom.

The utility model discloses an in some embodiments, the second grinding unit includes second grinding seat, connecting rod, grinding miller and circular arc piece, the second is ground the seat and is installed in the casing to be located the second kuppe under, and the second grinds the bottom of seat and passes through bolt fixed connection with grinding motor, and the second grinds the upper end of seat and is located first kuppe and second kuppe and be equipped with under, and the second grinds the inboard symmetry that the seat is located grinding groove and sets up the feed opening, four connecting rod one end is all installed on the lateral wall of transfer line, and wherein keep away from the one end of transfer line on two connecting rods and install the grinding miller with grinding groove adaptation, and the circular arc piece with grinding groove adaptation is installed to the one end that the transfer line was kept away from to other two connecting rods.

In some embodiments of the present invention, four the connecting rods are crossed, and the grinding wheel and the arc block are alternately arranged on one side of the four connecting rods.

In some embodiments of the present invention, the two ends of the arc block are symmetrically provided with a material pushing plate which is in sliding fit with the bottom of the grinding groove.

In some embodiments of the utility model, the top of transfer line stretches into in the transfer feed bin, and the bottom of transfer line is installed and is trembled the piece.

The utility model discloses an in some embodiments, the shake piece is including keeping off the dish, keep off the dish and pass through lock nut and transfer line fixed connection, and evenly install a plurality of L type on the upper end lateral wall that keeps off the dish and shake the piece.

The utility model discloses an in some embodiments, isolation sleeve sets up to the bilayer, and isolation sleeve's inlayer is the smooth baffle that encloses, it is sealed with the lateral wall contact of grinding the groove to enclose the baffle, and isolation sleeve's skin is the acoustical panel of seting up a plurality of bloops.

The embodiment of the utility model provides an at least, have following advantage or beneficial effect:

1. the utility model discloses a set gradually feed hopper, crushing case and transfer feed bin in the casing, after utilizing crushing case breakage with the heavy spar, utilize the filter screen in the transfer feed bin to sieve through the transfer feed bin earlier, directly screen tiny granule and grind in the second grinding component and refine, large granule heavy spar falls into first grinding component from transferring the feed bin in, utilize grinding motor drive transfer line to rotate, thereby drive the grinding ball and grind the heavy spar granule that flows into in the first grinding seat, the granule after the grinding is in getting into the second grinding seat, utilize the grinding miller to carry out the secondary and grind and refine, make heavy golden stone abrasive particle evenly refine;

2. when the first grinding assembly and the second grinding assembly in the shell are wrapped with the isolation sleeve and the silencing cotton, the isolation sleeve is provided with double layers, the barite grinding particles are isolated by the aid of the enclosure baffle of the inner layer, silencing is performed on grinding by the aid of the silencing plate of the outer layer, and grinding noise is reduced to the greatest extent by the aid of the silencing cotton;

3. tremble the piece through the top setting at the transfer line, the granule after the broken case falls into on trembleing the fender dish that moves, keeps off the dish and follows the transfer line and carry out synchronous rotation to will fall on keeping off the dish granule and shake the piece cooperation with a plurality of L types and shake and scatter, thereby be convenient for carry out abundant preliminary screening to broken barite.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic diagram of an optimal structure of a low-noise barite crushing and grinding device provided by an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a low-noise barite crushing and grinding device provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a crushing box of the low-noise barite crushing and grinding device provided by the embodiment of the invention;

fig. 4 is a schematic structural view of a transfer bin of the low-noise barite crushing and grinding device provided by the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first grinding seat of the low-noise barite crushing and grinding device provided by the embodiment of the present invention;

fig. 6 is a schematic structural view of a transmission rod connected to a grinding motor of the low-noise barite crushing and grinding device provided by the embodiment of the present invention;

fig. 7 is a schematic structural view of a second grinding seat of the low-noise barite crushing and grinding device according to an embodiment of the present invention.

Reference numerals: 1. a housing; 2. a feed hopper; 3. a crushing box; 31. a crushing roller; 32. a worm gear; 33. a worm; 34. a crushing motor; 4. a transfer bin; 41. a filter screen; 42. a first pod; 5. a first grinding assembly; 51. a first grinding seat; 511. a groove; 512. a discharge outlet; 52. grinding balls; 521. a convex ring; 53. a transmission rod; 54. a second pod; 55. a shaking piece; 551. a catch plate; 552. locking the nut; 553. an L-shaped shaking block; 6. grinding the motor; 7. a second grinding assembly; 71. A second grinding seat; 711. a grinding groove; 712. a feed opening; 72. a connecting rod; 73. a grinding wheel; 74. An arc block; 75. a material pushing plate; 8. an isolation sleeve; 9. silencing cotton.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "vertical", "horizontal", "inner", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship that the utility model is usually placed when in use, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, "a plurality" means at least 2 if appearing.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

The first embodiment is as follows:

referring to fig. 1 to 7, a low-noise barite grinding and milling apparatus includes: the crushing device comprises a shell 1, wherein a feeding hopper 2, a crushing box 3 and a transfer bin 4 which are mutually communicated are sequentially arranged in the shell 1 from top to bottom, two crushing rollers 31 which are mutually meshed are arranged in the crushing box 3, one ends of the two crushing rollers 31 penetrate through the crushing box 3 and are sleeved with worm wheels 32, the crushing box 3 is rotatably provided with a worm 33 on the same side of the worm wheels 32, the worm 33 is meshed with the two worm wheels 32, and a crushing motor 34 for driving the worm 33 to rotate is arranged on the side wall of the crushing box 3;

the first grinding assembly 5 is arranged in the shell 1, the first grinding assembly 5 is communicated with the transfer bin 4, a second grinding assembly 7 is arranged below the first grinding assembly 5, and a grinding motor 6 for driving the first grinding assembly 5 and the second grinding assembly 7 to work is arranged on the second grinding assembly 7;

an insulating sleeve 8 for noise reduction and sound insulation is sleeved on the second grinding assembly 7, and silencing cotton 9 is filled between the insulating sleeve 8 and the inner wall of the shell 1.

It should be noted that: when the grinding device is used, barite stones enter the crushing box 3 from the feeding hopper 2, then the crushing motor 34 is started, the crushing motor 34 drives the worm 33 to rotate, the worm 33 is meshed with the worm wheel 32, so that the two crushing rollers 31 are driven to rotate, primary crushing is carried out on the stones falling into the crushing box 3, crushed stone particles are transferred and screened through the transfer bin 4, large particles directly fall into the first grinding component 5, most of small particles directly fall into the second grinding component 7 and are then driven by the grinding motor 6 to be ground, the large particles are ground by the first grinding component 5 and then flow into the second grinding component 7 to be ground, so that the barite particles are ground more uniformly, the whole grinding process is carried out, the first grinding component 5 and the second grinding component 7 in the shell 1 are wrapped with the isolation sleeve 8 and the silencing cotton 9, the grinding noise is reduced to the maximum extent by matching with the silencing cotton 9.

Wherein, insulating sleeve 8 sets up to the bilayer, and insulating sleeve 8's inlayer be the smooth baffle that encloses, encloses the baffle and seals with the lateral wall contact of grinding groove 711, and insulating sleeve 8's skin is the acoustical panel of seting up a plurality of bloops, and insulating sleeve 8 utilizes the separating of inlayer to enclose the baffle like this and carries out the separation to heavy spar abrasive particle, recycles outer acoustical panel and carries out the amortization, and the empty setting in inlayer separates, is convenient for weaken the noise.

Referring to fig. 2 and 4, the transfer bin 4 is funnel-shaped, and the funnel corners of the transfer bin 4 are symmetrically provided with annular through grooves, the filter screens 41 are embedded in the two annular through grooves, and the outer side wall of the transfer bin 4 is provided with a first air guide sleeve 42 for guiding the abrasive particles filtered by the filter screens 41 into the second grinding assembly 7.

It should be noted that: transfer feed bin 4 is when bearing the broken barite granule of broken case 3, and the most granule that the granule is less than filter screen 41 mesh diameter passes from filter screen 41, grinds in leading inflow second grinding component 7 through first kuppe 42, and large granule and some small particle barite are from in the direct first grinding component 5 that falls into of transfer feed bin 4, mainly grind the large granule and refine.

Referring to fig. 2, 5 and 6, the first grinding assembly 5 includes a first grinding seat 51, grinding balls 52 and a transmission rod 53, the first grinding seat 51 is fixedly connected to the bottom end of the transfer bin 4 through a flange, a plurality of grooves 511 are uniformly formed in the inner side wall of the first grinding seat 51, a discharge outlet 512 is formed in the inner side wall of the first grinding seat 51 at the bottom end of the plurality of grooves 511, a second guiding cover 54 for guiding the grinding particles discharged from the discharge outlet 512 to the second grinding assembly 7 is arranged below the discharge outlet 512 on the outer side wall of the first grinding seat 51, the transmission rod 53 is rotatably mounted on the first grinding seat 51, and the transmission rod 53 is coaxially and fixedly connected to the output shaft of the grinding motor 6; the transmission rod 53 is fixedly provided with a grinding ball 52, and the outer side wall of the grinding ball 52 is provided with a convex ring 521 matched with the plurality of grooves 511.

It should be noted that: when the first grinding assembly 5 is used, the grinding motor 6 is controlled to rotate, the grinding motor 6 drives the transmission rod 53 to rotate, the transmission rod 53 drives the grinding ball 52 to slide relative to the first grinding seat 51, so that the plurality of convex rings 521 are matched with the plurality of grooves 511 to grind the barite particles, and the ground particles are guided into the second grinding assembly 7 from the second guide cover 54 to be further ground and refined.

The gaps between the grooves 511 and the convex rings 521 are gradually decreased from top to bottom, so that the large-particle barite at the top layer is gradually ground and refined, and finally the barite particles with uniform particles are obtained.

Referring to fig. 2, 6 and 7, the second grinding assembly 7 includes a second grinding seat 71, a connecting rod 72, a grinding wheel 73 and an arc block 74, the second grinding seat 71 is installed in the housing 1 and located right below the second pod 54, a bottom end of the second grinding seat 71 is fixedly connected to the grinding motor 6 through a bolt, an upper end of the second grinding seat 71 is located right below the first pod 42 and the second pod 54, a grinding groove 711 is located right below the second pod 711, the second grinding seat 71 is located inside the grinding groove 711, the discharge openings 712 are symmetrically located inside the second grinding seat 71, one ends of the four connecting rods 72 are all installed on an outer side wall of the transmission rod 53, the grinding wheel 73 adapted to the grinding groove 711 is installed on one end of the two connecting rods 72 far from the transmission rod 53, and the arc block 74 adapted to the grinding groove 711 is installed on one end of the other two connecting rods 72 far from the transmission rod 53.

It should be noted that: when the second grinding assembly 7 is used, timely particles fall into the grinding groove 711 of the second grinding seat 71 from the first air guide sleeve 42 and the second air guide sleeve 54, then the transmission rod 53 rotates to drive the connecting rod 72 to synchronously rotate, the connecting rod 72 drives the grinding wheel 73 to roll in the grinding groove 711, so that barite particles in the grinding groove 711 are ground, the barite particles which are bonded at the bottom of the grinding groove 711 after grinding are shoveled by the arc block 74, after a certain amount of grinding particles of the grinding groove 711 are piled up, the particles overflow from the inner side edge of the grinding groove 711 under the shoveling action of the arc block 74, and are discharged from the feed opening 712, and final particle refining grinding is completed.

Referring to fig. 1 and 2, the four connecting rods 72 are cross-shaped, and the grinding wheels 73 and the arc blocks 74 mounted on the four connecting rods 72 are alternately arranged at one side.

It should be noted that: therefore, the barite particles in the grinding groove 711 can be shoveled and ground alternately by using the two groups of grinding wheels 73 and the arc blocks 74, and the quality of the ground particles can be improved conveniently.

Referring to fig. 1 and 2, two ends of the arc block 74 are symmetrically provided with material pushing plates 75 slidably engaged with the bottom of the grinding groove 711.

It should be noted that: thus, when the arc block 74 rotates to scoop up the particles in the grinding groove 711, the push plate 75 is used to turn over the barite particles at the bottom in the grinding groove 711, and the shape and structure of the arc block are like a plow, so that the arc block can be used as if a plow is used to turn the soil.

Example two:

in the second embodiment, referring to fig. 2 and fig. 6, the top end of the transmission rod 53 extends into the transfer bin 4, the bottom end of the transmission rod 53 is provided with a shaking member 55, the shaking member 55 includes a blocking plate 551, the blocking plate 551 is fixedly connected with the transmission rod 53 through a locking nut 552, and the upper side wall of the blocking plate 551 is uniformly provided with a plurality of L-shaped shaking blocks 553.

It should be noted that: the granule after 3 broken of broken casees like this falls into and shakes on 55 fender dish 551, keeps off dish 551 and follows the transfer line 53 and rotate in step to the granule shakes the piece 553 cooperation with a plurality of L types and shakes on the fender dish 551 and trembles the scattering, shakes on falling to transfer feed bin 4, thereby is convenient for carry out abundant preliminary screening to broken barite.

The utility model provides a pair of grinder is smashed to low noise barite's theory of operation is:

when the grinding device is used, barite stones enter the crushing box 3 from the feeding hopper 2, then the crushing motor 34 is started, the crushing motor 34 drives the worm 33 to rotate, the worm 33 is meshed with the worm wheel 32, so that the two crushing rollers 31 are driven to rotate, the stones falling into the crushing box 3 are subjected to primary crushing, crushed stone particles are transferred and screened through the transfer bin 4, large particles directly fall into the first grinding assembly 5, most small particles directly fall into the second grinding assembly 7, then the crushed stones are driven to be ground through the driving of the grinding motor 6, when the first grinding assembly 5 is used, the grinding motor 6 is controlled to rotate, the grinding motor 6 drives the transmission rod 53 to rotate, the transmission rod 53 drives the grinding ball 52 and the first grinding seat 51 to slide relatively, so that the barite particles are ground by matching of the plurality of convex rings 521 and the plurality of grooves 511, and the ground particles are guided into the second grinding assembly 7 from the second deflector 54 to be further ground and refined, when the second grinding assembly 7 is used, particles fall into the grinding groove 711 of the second grinding seat 71 from the middle of the first air guide sleeve 42 and the second air guide sleeve 54 in time, then the transmission rod 53 rotates to drive the connecting rod 72 to synchronously rotate, the connecting rod 72 drives the grinding wheel 73 to roll in the grinding groove 711, so that barite particles in the grinding groove 711 are ground, the barite particles which are rolled and bonded at the bottom of the grinding groove 711 are shoveled by the arc block 74 after being rolled and ground, after a certain amount of ground particles in the grinding groove 711 are piled up, the particles overflow from the inner side of the grinding groove 711 under the shoveling action of the arc block 74 and are discharged from the feed opening 712, the final fine particle grinding is completed, the fine step-by-step grinding of the grinding process is realized, the grinding quality is improved, and meanwhile, during the whole grinding process, the first grinding assembly 5 and the second grinding assembly 7 in the shell 1 are wrapped by the isolation sleeve 8 and the noise reduction cotton 9, the grinding noise is reduced to the utmost extent by matching with the silencing cotton 9.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a grinder is smashed to low noise barite which characterized in that includes:

the crushing device comprises a shell (1), wherein a feeding hopper (2), a crushing box (3) and a transfer bin (4) which are communicated with each other are sequentially arranged in the shell (1) from top to bottom, two crushing rollers (31) which are meshed with each other are arranged in the crushing box (3), one ends of the two crushing rollers (31) penetrate through the crushing box (3) and are sleeved with worm wheels (32), the crushing box (3) is rotatably provided with worms (33) on the same side of the worm wheels (32), the worms (33) are meshed with the two worm wheels (32), and a crushing motor (34) for driving the worms (33) to rotate is arranged on the side wall of the crushing box (3);

the grinding device comprises a shell (1), a first grinding assembly (5), a second grinding assembly (7) and a grinding motor (6), wherein the first grinding assembly (5) is arranged in the shell (1), the first grinding assembly (5) is communicated with a transfer bin (4), the second grinding assembly (7) is arranged below the first grinding assembly (5), and the second grinding assembly (7) is provided with the grinding motor (6) for driving the first grinding assembly (5) and the second grinding assembly (7) to work;

and the insulating sleeve (8) is used for reducing noise and insulating sound, the insulating sleeve (8) is sleeved on the second grinding component (7), and silencing cotton (9) is filled between the insulating sleeve (8) and the inner wall of the shell (1).

2. The low-noise barite crushing and grinding device according to claim 1, wherein the transfer bin (4) is funnel-shaped, the funnel corners of the transfer bin (4) are symmetrically provided with annular through grooves, the two annular through grooves are embedded with filter screens (41), and the outer side wall of the transfer bin (4) is provided with a first guide cover (42) for guiding the abrasive particles filtered by the filter screens (41) to be guided into the second grinding assembly (7).

3. The low noise barite crushing mill device according to claim 1, characterized in that the first milling assembly (5) comprises a first milling seat (51), a milling ball (52) and a transmission rod (53), the first grinding seat (51) is fixedly connected with the bottom end of the transfer bin (4) through a flange plate, a plurality of grooves (511) are uniformly formed in the inner side wall of the first grinding seat (51), a discharge outlet (512) is formed in the inner side wall of the first grinding seat (51) and is positioned at the bottom end of the grooves (511), a second flow guide cover (54) for guiding grinding particles discharged from the discharge outlet (512) to be guided into the second grinding assembly (7) is arranged below the discharge outlet (512) on the outer side wall of the first grinding seat (51), the transmission rod (53) is rotatably arranged on the first grinding seat (51), the transmission rod (53) is coaxially and fixedly connected with an output shaft of the grinding motor (6); the transmission rod (53) is fixedly provided with a grinding ball (52), and the outer side wall of the grinding ball (52) is provided with a convex ring (521) matched with the grooves (511).

4. The low-noise barite crushing and grinding device as claimed in claim 3, wherein gaps between the grooves (511) and the adaptive convex rings (521) are gradually decreased from top to bottom.

5. The low-noise barite crushing and grinding device according to any one of claims 1 to 4, wherein the second grinding assembly (7) comprises a second grinding seat (71), a connecting rod (72), a grinding wheel (73) and a circular arc block (74), the second grinding seat (71) is installed in the housing (1) and is located right below the second air guide sleeve (54), the bottom end of the second grinding seat (71) is fixedly connected with the grinding motor (6) through a bolt, the upper end of the second grinding seat (71) is located right below the first air guide sleeve (42) and the second air guide sleeve (54), a grinding groove (711) is symmetrically arranged on the inner side of the grinding groove (711) at the upper end of the second grinding seat (71), one ends of the four connecting rods (72) are installed on the outer side wall of the transmission rod (53), the grinding wheel (73) matched with the grinding groove (711) is installed on one end of the two connecting rods (72) far away from the transmission rod (53), and one ends of the other two connecting rods (72) far away from the transmission rod (53) are provided with arc blocks (74) matched with the grinding grooves (711).

6. The low noise barite crushing and grinding device as claimed in claim 5, wherein the four connecting rods (72) are cross-shaped, and the grinding wheels (73) and the arc blocks (74) mounted on the four connecting rods (72) are alternately arranged on one side.

7. The low-noise barite crushing and grinding device as claimed in claim 5, wherein the two ends of the arc block (74) are symmetrically provided with material pushing plates (75) which are in sliding fit with the bottoms of the grinding grooves (711).

8. The low-noise barite crushing and grinding device according to claim 3, wherein the top end of the transmission rod (53) extends into the intermediate material bin (4), and the bottom end of the transmission rod (53) is provided with a shaking piece (55).

9. The low-noise barite crushing and grinding device as claimed in claim 8, wherein the shaking piece (55) comprises a baffle disc (551), the baffle disc (551) is fixedly connected with the transmission rod (53) through a locking nut (552), and a plurality of L-shaped shaking blocks (553) are uniformly arranged on the side wall of the upper end of the baffle disc (551).

10. The low-noise barite crushing and grinding device as claimed in claim 1, characterized in that the isolation sleeve (8) is provided with two layers, the inner layer of the isolation sleeve (8) is a smooth enclosure plate, the enclosure plate is in contact and seal with the outer side wall of the grinding groove (711), and the outer layer of the isolation sleeve (8) is a sound-absorbing plate provided with a plurality of sound-absorbing holes.