CN111545322A

CN111545322A - A milling machine for heavy calcium carbonate production

Info

Publication number: CN111545322A
Application number: CN202010292481.3A
Authority: CN
Inventors: 方胜满; 王四清; 刘涛
Original assignee: Anhui Oriental Calcium Co ltd
Current assignee: Anhui Oriental Calcium Co ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-08-18
Anticipated expiration: 2040-04-14
Also published as: CN111545322B

Abstract

The invention relates to the field of calcium carbonate production equipment, and discloses a grinding mill for producing heavy calcium carbonate, which solves the technical problem of dust pollution caused by dust entering air through a feed inlet in the calcium carbonate process. Can shelter from the charging barrel through installing frame and filter cloth, have the effect that blocks the dust and reduce dust pollution.

Description

A milling machine for heavy calcium carbonate production

Technical Field

The invention relates to the technical field of calcium carbonate production equipment, in particular to a pulverizer for producing heavy calcium carbonate.

Background

Calcium carbonate (CaCO)₃) Is an inorganic compound commonly known as limestone, stone powder, marble, etc. Calcium carbonate is neutral, basically insoluble in water and soluble in hydrochloric acid, is an important building material and has wide industrial application. Calcium carbonate can be classified into heavy calcium carbonate, light calcium carbonate, colloidal calcium carbonate and crystalline calcium carbonate according to the production method of calcium carbonate. In the production process of heavy calcium carbonate, natural calcite, limestone, chalk, shells and the like are directly ground by a mechanical method to obtain the heavy calcium carbonate, and a grinding mill is one of grinding devices.

The chinese patent with the publication number of CN108745506A discloses a building stones milling machine, which comprises an outer shell, the top surface intercommunication of shell has the pan feeding mouth, the left side fixed mounting of shell has servo motor, servo motor's upper end movable mounting has the belt, the inside of shell is provided with the milling machine, the inside fixed mounting of milling machine has the axis of rotation, the surface cover of axis of rotation is equipped with first live-rollers, the below fixed mounting of first live-rollers has the second live-rollers, the below fixed mounting of second live-rollers has the third live-rollers, and the inner wall both sides fixed mounting of milling machine has the sawtooth, and the third live-rollers meshes with the sawtooth mutually, and the bottom surface intercommunication of milling machine has the discharge gate. When in work, the stone is poured into the pulverizer from the feeding port, then the first rotating roller and the second rotating roller primarily crush the stone into fragments, then the third rotating roller is meshed with the saw teeth, the crushed stone is further ground into powder,

however, in this kind of building stone pulverizer, the building stone is being smashed and is being polished into powdered in-process, can produce a large amount of dusts and float in the pulverizer, because the charge door is uncovered setting, the dust can float to the air through the charge door, causes dust pollution easily.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a pulverizer for producing heavy calcium carbonate, which has the effect of reducing dust pollution caused by dust floating in the air.

The technical purpose of the invention is realized by the following technical scheme: a pulverizer for heavy calcium carbonate production comprises a mounting frame and a pulverizer body fixedly arranged on the mounting frame, wherein the cross section of the pulverizer body is circular, a servo motor is arranged outside the pulverizer body, the output end of the servo motor is coaxially connected with a first belt pulley, a rotating shaft is arranged in the pulverizer body in a rotating mode, one end of the rotating shaft penetrates through the top of the pulverizer body and is coaxially connected with a second belt pulley, a first conveying belt is simultaneously tensioned and wound on the peripheries of the first belt pulley and the second belt pulley, the outer side of the rotating shaft is connected with a grinding roller set, a feed opening is formed in the top of the pulverizer body, a feed cylinder is communicated with the outer side of the top of the pulverizer body at the feed opening, a circular first through groove is formed in the wall of the feed cylinder along the periphery, the first through groove is a major arc, and circular filter cloth is arranged on the outer side of the feed, the periphery rigid coupling of filter cloth has the installing frame, the centre of a circle of filter cloth and the centre of a circle of charging barrel are on the circular arc of same circle, the installing frame intersects and rotates with the charging barrel and connects, the inherent rotation post of vertical direction is followed to the one end of first logical groove, the installing frame has been worn to establish by the rotation post, the outside fixedly connected with pull rod of installing frame, the discharge gate has been seted up to the bottom of milling machine body.

Through the technical scheme, add man-hour, servo motor is rotatory through first belt pulley and second belt pulley and conveyer drive axis of rotation, make grinding roller set and axis of rotation synchronous revolution, then the operator passes through the charge door and this internal raw materials that adds of milling machine, grinding roller set is broken and is ground into powdered to the raw materials after that, in the course of working, the operator is with the installing frame round the rotation post with filter cloth towards the inside rotation of charging barrel, until filter cloth through the rotatory inside to the charging barrel of first logical groove, filter cloth shelters from the nozzle of charging barrel this moment, filter cloth's setting, be favorable to further reducing the possibility that heavy calcium carbonate powder discharged through the nozzle of charging barrel, thereby reduced the possibility that the dust floated and caused dust pollution in the air.

The invention is further configured to: the one end rigid coupling that the milling machine body was kept away from to the charging barrel has the sleeve of round platform form, the one end orientation that the charging barrel was kept away from to the big one end of sleeve bore sets up, just the articulated apron that is connected with of one end that the charging barrel was kept away from to the sleeve.

Through the technical scheme, after the feeding is finished, an operator can turn the cover plate around the hinged position between the cover plate and the sleeve, so that the cover plate covers the sleeve, the opening of the sleeve is shielded, and the possibility of dust pollution caused by floating of dust generated in the grinding process into the air is further reduced; meanwhile, the sleeve is arranged into a round table shape, so that an operator can conveniently feed materials into the sleeve and the feeding barrel.

The invention is further configured to: the inside below of this internal at the charge door of milling machine is equipped with the stock guide, the one end slope setting that the stock guide is close to milling machine body inner wall towards the grinding roller set.

Through above-mentioned technical scheme, when the raw materials passes through the charge door and adds to the milling machine originally internally, the raw materials slides along the stock guide towards the tip of grinding roller set, has played the effect of direction to the direction that the raw materials descends, is favorable to the raw materials high-speed movement to grind the tip of roller set and is smashed and grind, improves the efficiency of processing.

The invention is further configured to: the outside at the top of milling machine body is provided with the bearing frame, the bearing inner race in the bearing frame is worn to establish by the axis of rotation and with bearing inner race coaxial coupling, the one end that the second belt pulley was kept away from to the axis of rotation is suspended in the milling machine body, the below at the axis of rotation is equipped with filter screen in the milling machine body, the outside rigid coupling of milling machine body has the mount pad, be provided with the bobbing machine on the mount pad, be equipped with the connecting rod between bobbing machine and the filter screen, the connecting rod is worn to establish the milling machine body and both ends respectively with bobbing machine and filter screen fixed connection, be equipped with the guide cylinder that round platform form and both ends link up in the milling machine body between axis of rotation and filter screen, the big one end of guide cylinder opening and the interior week fixed connection of milling machine body, the little one end of guide cylinder opening is located filter screen's top and extends to filter, and the pulverizer body is provided with a discharging assembly for discharging the filtering screen.

Through above-mentioned technical scheme, on the guide cylinder was fallen to the heavy calcium carbonate through the crocus, then the guide cylinder was on filter screen along the landing, and the bobbing machine drove filter screen vibration to sieve to heavy calcium carbonate and move the filtration, make the powdered granular heavy calcium carbonate of not being ground into filtered, be favorable to guaranteeing heavy calcium carbonate's product quality.

The invention is further configured to: filter screen includes first components of a whole that can function independently and the second components of a whole that can function independently of articulated connection, the outside of milling machine body is equipped with the bobbing machine that links to each other with first components of a whole that can function independently, the subassembly of unloading includes first actuating cylinder that drives, first actuating cylinder that drives sets up the outside at the milling machine body, first actuating cylinder's telescopic link wears to establish into the milling machine body and supports the below at the second components of a whole that can function independently, fixedly connected with bracing piece on the inside wall of milling machine body, the bracing piece is located the below of the first telescopic link that drives actuating cylinder, works as during the first telescopic link that drives actuating cylinder withdraws, second components of a whole that can function independently downward sloping and support on the bracing piece, the outside of milling machine body is equipped with and is used for driving the first second that drives actuating cylinder goes up and down and drives actuating cylinder, the telescopic link that the second drove actuating cylinder and the first lateral wall fixed connection that drives actuating cylinder, the second through groove that the And a secondary grinding mechanism is arranged below the second split body in the pulverizer body.

Through above-mentioned technical scheme, the filterable ground limestone passes through the discharge gate and discharges, and the telescopic link withdrawal of first actuating cylinder is followed, and the second components of a whole that can function independently supports on the bracing piece until the second components of a whole that can function independently downwards rotation around the articulated department of second components of a whole that can function independently and first components of a whole that can function independently, and the ground limestone granule on the filter screen cloth landing downwards this moment to discharge after the secondary grinding is carried out to the secondary grinding mechanism. Set up like this, be favorable to being filtered the heavy calcium carbonate granule that gets off by filter screen and form powdered heavy calcium carbonate through secondary grinding mechanism secondary grinding, be favorable to improving the crocus precision to heavy calcium carbonate.

The invention is further configured to: the outside of milling machine body bonds and has the seal layer of chooseing for use the rubber material to make, the seal layer is blocked up the second through-slot, the middle part of seal layer is followed vertical direction and is offered the first telescopic link that drives actuating cylinder and is worn to establish the seam of wearing to establish that slides, wear to establish the seam and communicate with the second through-slot mutually, the first telescopic link that drives actuating cylinder will wear to establish the seam and strut.

Through above-mentioned technical scheme, the seal layer of making by the rubber material has elasticity, and the telescopic link of first actuating cylinder of driving only will correspond wearing to establish the seam and strut of position, and the position of strutting changes along with the removal of telescopic link, and the seal layer is plugged up the notch shutoff that the second led to the groove, has reduced the possibility that the dust got into the air through the notch that the second led to the groove, has played the effect that presses down the dirt.

The invention is further configured to: the secondary grinds mechanism includes each other circumscribed three live-rollers and is used for driving the rotatory driving motor of three live-rollers, the live-rollers rotates the inside that sets up at the milling machine body, driving motor sets up at the milling machine body outside, and is three the live-rollers are triangle-shaped and arrange, milling machine body and coaxial coupling have a third belt pulley are worn out to the one end of live-rollers, and is three the common tensioning in the outside of third belt pulley is around being equipped with second conveyer belt, driving motor's output shaft and one of them third belt pulley coaxial coupling.

Through above-mentioned technical scheme, graininess ground limestone slip from the filter screen cloth and fall to three live-rollers on, driving motor work drives one of them third belt pulley rotation, and third belt pulley and conveyer friction this moment, conveyer friction drive between three third belt pulley to it is rotatory to drive three live-rollers simultaneously, and graininess ground limestone is ground into powdered between two adjacent live-rollers this moment, thereby realizes the secondary grinding to the ground limestone.

The invention is further configured to: the outside of milling machine body is equipped with the sliding plate in the below of discharge gate, the sliding plate downward sloping sets up.

Through above-mentioned technical scheme, when the ground heavy calcium carbonate powder was discharged from the discharge gate, powdered heavy calcium carbonate fell on the sliding plate, then through sliding plate landing and collected, the setting of sliding plate, heavy calcium carbonate powder from discharge gate discharge had played the cushioning effect, had reduced the heavy calcium carbonate powder and has directly dropped the possibility that causes a large amount of dusts from the discharge gate, had played the effect that reduces dust pollution.

In conclusion, the invention has the following beneficial effects:

1. the dust is blocked, and the possibility of dust pollution caused by dust floating in the air is reduced;

2. the discharging and secondary grinding of the granular heavy calcium carbonate intercepted by filtration are realized, and the production quality of the heavy calcium carbonate is favorably ensured.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic structural diagram for showing the positional relationship between the filter cloth and the charging barrel in the embodiment.

Fig. 4 is a plan view of the present embodiment.

Fig. 5 is a sectional view taken along the direction B of fig. 4.

Fig. 6 is a schematic structural diagram for showing a positional relationship between the second through groove and the sealing layer in the present embodiment.

Fig. 7 is an enlarged view of a portion B in fig. 1.

Reference numerals: 1. a mounting frame; 2. a pulverizer body; 21. a servo motor; 211. a first pulley; 212. a first support block; 22. a rotating shaft; 221. a second pulley; 222. a first conveyor belt; 23. a feed inlet; 231. a charging barrel; 2311. a first through groove; 2312. a filter cloth; 2313. installing a frame; 2314. rotating the column; 2315. a pull rod; 232. a sleeve; 233. a cover plate; 24. a discharge port; 241. a material sliding plate; 25. a material guide plate; 26. a bearing seat; 27. filtering the screen; 271. a first split body; 272. a second body; 273. a vibrator; 2731. a mounting seat; 2732. a connecting rod; 274. a first driving cylinder; 275. a support bar; 276. a second driving cylinder; 277. a second through groove; 2771. a sealing layer; 2772. penetrating a seam; 28. a material guide cylinder; 29. a secondary grinding mechanism; 291. a rotating roller; 2911. a third belt pulley; 2912. a second conveyor belt; 292. a drive motor; 293. a second support block; 3. a grinding roller set; 31. a first rotating roller; 32. a second rotating roller; 33. a third rotating roller; 34. and (4) saw teeth.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): referring to fig. 1 and 2, the pulverizer for producing heavy calcium carbonate disclosed by the invention comprises a mounting frame 1 and a pulverizer body 2 welded and supported on the mounting frame 1, wherein the cross section of the pulverizer body 2 is circular. Feed inlet 23 has been seted up at the top of milling machine body 2, and the welding of the top outside of milling machine body 2 has two feed cylinders 231, and feed cylinder 231 is linked together with feed inlet 23. The wall of the feeding barrel 231 is provided with a first circular arc through groove 2311 along the periphery, and the first through groove 2311 is an arc.

Referring to fig. 2 and 3, a circular filter cloth 2312 is arranged on the outer side of the feeding cylinder 231, an installation frame 2313 is bonded to the periphery of the filter cloth 2312, the circle center of the filter cloth 2312 and the circle center of the feeding cylinder 231 are on the same circular arc, the diameter of the filter cloth 2312 is the same as the inner diameter of the feeding cylinder 231, a rotating column 2314 is fixedly arranged at one end of the first through groove 2311 along the vertical direction, the rotating column 2314 penetrates through the installation frame 2313, the installation frame 2313 is rotatably connected into the first through groove 2311 through the rotating column 2314, the installation frame 2313 is intersected with the feeding cylinder 231, the installation frame 2313 is partially limited in the first through groove 2311 and the feeding cylinder 231, two sides of the installation frame 2313 along the vertical direction are respectively bonded to the groove wall of the first through groove 2311, and a pull rod 2315 is bonded to the outer side of the installation frame 2313.

Referring to fig. 2 and 3, one end of the charging barrel 231, which is far away from the pulverizer body 2, is integrally connected with a circular truncated cone-shaped sleeve 232, one end of the sleeve 232, which has a large caliber, is arranged towards the direction far away from the charging barrel 231, and one end of the sleeve 232, which is far away from the charging barrel 231, is hinged with a cover plate 233. During processing, the opening of sleeve 232 is opened, then the operator is reinforced in towards feed cylinder 231, and the raw materials is processed into powdered in falling into milling machine body 2, and the operator is rotatory around rotating post 2314 with installing frame 2313 this moment for filter cloth 2312 is rotatory and is sheltered from the tube socket of feed cylinder 231 in going into feed cylinder 231, and closes the cover plate 233 on the tube socket of sleeve 232. The filter cloth 2312 and the cover plate 233 play a role in stopping dust floating in the mill body 2, and reduce the possibility of dust pollution caused by the dust entering the air.

Referring to fig. 4 and 5, the bottom of the mill body 2 is opened with a discharge port 24, a sliding plate 241 is provided below the discharge port 24 outside the mill body 2, the sliding plate 241 is welded outside the bottom of the mill body 2, the sliding plate 241 is inclined downward, and the ground powdery ground calcium carbonate is discharged through the discharge port 24, slides down along the sliding plate 241, and is collected. The arrangement of the material sliding plate 241 has a buffering effect on the falling powdery ground calcium carbonate, so that the possibility that the powdery ground calcium carbonate directly falls on the bearing body to stir a large amount of dust is reduced, and the possibility of reducing dust pollution is further reduced.

Referring to fig. 1, the outside of milling machine body 2 bonds and has first supporting block 212, be provided with servo motor 21 on the first supporting block 212, servo motor 21's output coaxial coupling has first belt pulley 211, milling machine body 2 internal rotation is provided with axis of rotation 22, the outside at the top of milling machine body 2 is provided with bearing frame 26, bearing frame 26 passes through bolt threaded connection at the top of milling machine body 2, the top of milling machine body 2 is worn out to the one end of axis of rotation 22 and with bearing inner race coaxial coupling in bearing frame 26, bearing frame 26 and coaxial coupling have second belt pulley 221 are worn out to the tip of axis of rotation 22, the periphery of first belt pulley 211 and second belt pulley 221 is simultaneously the tensioning around being equipped with first transmission belt 222, the one end suspension that second belt pulley 221 is kept away from to axis of rotation 22 is in milling machine body 2.

Referring to fig. 5, the grinding roll group 3 is connected to the outside of the rotating shaft 22. The patent publication No. CN108745506A discloses a specific structure of the grinding roller set 3, the grinding roller set 3 includes a first rotating roller 31291, a second rotating roller 32291 and a third rotating roller 33291 from top to bottom, the first rotating roller 31291, the second rotating roller 32291 and the third rotating roller 33291 are all fixedly connected to the outer side of the rotating shaft 22, the arm lengths are gradually increased from top to bottom, the inner wall of the mill body 2 is provided with saw teeth 34, and the third rotating roller 33291 is engaged with the saw teeth 34. The material guide plate 25 is arranged below the feeding port 23 in the flour mill body 2, the material guide plate 25 is obliquely arranged towards the direction close to the inner wall of the flour mill body 2, when an operator feeds materials, the raw materials fall onto the first rotating roller 31291 along the material guide plate 25, the servo motor 21 drives the first belt pulley 211 to rotate at the moment, the first belt pulley 211 and the first transmission belt 222 are in friction transmission, the first transmission belt 222 is in friction transmission with the second belt pulley 221, so that the rotating shaft 22 is driven to rotate, at the moment, the first rotating roller 31291, the second rotating roller 32291 and the third rotating roller 33291 synchronously rotate along with the rotating shaft 22, the first rotating roller 31291 and the second rotating roller 32291 smash the raw materials, and the third rotating roller 33291 and the sawteeth 34 grind the smashed materials into powder.

Referring to fig. 5, the filtering screen 27 is arranged below the rotating shaft 22 in the pulverizer body 2, the filtering screen 27 includes a first split body 271 and a second split body 272 which are connected in a hinged manner, a mounting seat 2731 is bonded on the outer side of the pulverizer body 2, a vibrator 273 is arranged on the mounting seat 2731, a connecting rod 2732 is arranged between the vibrator 273 and the filtering screen 27, the connecting rod 2732 penetrates through the pulverizer body 2, two ends of the connecting rod are respectively welded and fixed with the vibrator 273 and the first split body 271, a guide cylinder 28 with a round platform shape and two through ends is arranged between the rotating shaft 22 and the filtering screen 27 in the pulverizer body 2, one end with a large opening of the guide cylinder 28 is welded and fixed with the inner periphery of the pulverizer body 2, and one end with a small opening of the guide cylinder 28 is arranged above the filtering screen 27 and extends to the. The ground heavy calcium carbonate falls onto the filter screen 27, and the vibrating machine 273 vibrates and drives the vibrating screen to vibrate, so that the purposes of sieving and filtering the heavy calcium carbonate are achieved.

Referring to fig. 5 and 6, the pulverizer body 2 is provided with a discharging assembly for discharging the filter screen 27, the discharging assembly includes a first driving motor 292, the first driving motor 292 is disposed outside the pulverizer body 2, one side of the pulverizer body 2 is provided with a second through groove 277 along a vertical direction for the telescopic rod of the first driving cylinder 274 to penetrate through, the telescopic rod of the first driving cylinder 274 penetrates into the pulverizer body 2 and is supported below the second sub-body 272, the outside of the pulverizer body 2 is bonded with a sealing layer 2771, the sealing layer 2771 is made of rubber and has elasticity, the sealing layer 2771 blocks the second through groove 277, the middle part of the sealing layer 2771 is provided with a penetrating seam 2772 along a vertical direction for the telescopic rod of the first driving cylinder 274 to penetrate and slide, the penetrating seam 2772 is communicated with the second through groove 277, the penetrating seam 2772 is opened at the position of the telescopic rod of the first driving cylinder 274, the inner walls of the remaining through slits 2772 are attached to each other and are in a closed state. The outside of milling machine body 2 is provided with the second drive cylinder 276 that is used for driving the first drive cylinder 274 lift, and the telescopic link of second drive cylinder 276 and the lateral wall welded fastening of first drive cylinder 274.

Referring to fig. 5, a support rod 275 is bonded to the inner sidewall of the pulverizer body 2, and the support rod 275 is located below the telescopic rod of the first driving cylinder 274. In the filtering process, the telescopic rod of the first driving cylinder 274 is supported below the second component 272, the granular heavy calcium carbonate is filtered and retained on the filtering screen 27, an operator periodically drives the telescopic rod of the first driving cylinder 274 to retract, at the moment, the second component 272 loses the support and rotates along the hinged joint of the second component 272 and the first component 271 until the second component 272 is supported on the supporting rod 275, at the moment, the second component 272 is in a downward inclined state, and the granular heavy calcium carbonate slides downwards from the filtering screen 27, so that the unloading is realized.

Referring to fig. 5 and 6, after the discharging is completed, the telescopic rod of the second driving cylinder 276 firstly retracts, so that the position of the first driving cylinder 274 descends until the telescopic rod of the first driving cylinder 274 is located below the second sub-body 272 in the height position, then the telescopic rod of the first driving cylinder 274 extends, then the telescopic rod of the second driving cylinder 276 extends again, so that the position of the first driving cylinder 274 rises to the initial position, in the process, the telescopic rod of the first driving cylinder 274 lifts the second sub-body 272, and the second sub-body 272 rotates to the initial position around the hinged position of the second sub-body 272 and the first sub-body 271. After the telescopic rod of the first driving cylinder 274 is used for opening the penetrating seam 2772 during moving and then moving away, the penetrating seam 2772 is elastically restored and then is restored to the closed state.

Referring to fig. 5 and 7, a secondary grinding mechanism 29 is disposed below the second section 272 in the powder mill body 2, the secondary grinding mechanism 29 includes three rotating rollers 291 that are circumscribed with each other and a driving motor 292 for driving the three rotating rollers 291 to rotate, the rotating rollers 291 are rotatably disposed inside the powder mill body 2, the three rotating rollers 291 are arranged in a triangular shape, and one end of the rotating rollers 291 penetrates through the powder mill body 2 and is coaxially connected with a third belt pulley 2911. The outer sides of the three third pulleys 2911 are collectively tightly wound with a second transmission belt 2912.

Referring to fig. 5 and 7, a second support block 293 is bonded to the outer side of the pulverizer body 2, the driving motor 292 is fixedly disposed on the second support block 293, and an output shaft of the driving motor 292 is coaxially connected to one of the third pulleys 2911. During operation, the granular heavy calcium carbonate falls onto the rotating rollers 291, the driving motor 292 drives one of the third belt pulleys 2911 to rotate, the three third belt pulleys 2911 are driven to rotate by the friction transmission force between the rotation of the third belt pulleys 2911 and the second transmission belt 2912, so that the three rotating rollers 291 are driven to rotate, and the granular heavy calcium carbonate is secondarily ground into powder between two adjacent rotating rollers 291 and then discharged.

The implementation principle of the embodiment is as follows: during the processing, an operator adds a heavy calcium carbonate raw material into the pulverizer body 2 through the sleeve 232, then rotates the mounting frame 2313 and the filter cloth 2312 towards the charging barrel 231 along the rotating column 2314, covers the cover plate 233 at one open end of the sleeve 232, drives the rotating shaft 22 to rotate through the friction transmission force of the first belt pulley 211, the second belt pulley 221 and the first transmission belt 222 by the servo motor 21, crushes the raw material into fragments by the first rotating roller 31291 and the second rotating roller 32291, and grinds the fragments into heavy calcium carbonate by the third rotating roller 33291 and the saw teeth; then the ground calcium carbonate falls onto the filter screen 27 along the pouring cylinder and is sieved, so that the granular ground calcium carbonate is retained on the filter screen 27, and the filtered powdery ground calcium carbonate is discharged through the discharge port 24; then the operator drives the telescopic rod of the first driving cylinder 274 to retract periodically, at the same time, the second body 272 loses support and rotates along the hinged joint of the second body 272 and the first body 271 until the second body 272 is supported on the support rod 275, at the same time, the second body 272 is in a downward inclined state, the granular heavy calcium carbonate slides down from the filtering screen 27 onto the three rotating rollers 291, the three rotating rollers 291 rotate under the driving of the driving motor 292, and the granular heavy calcium carbonate is ground into powder between two adjacent rotating rollers 291 and then discharged.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a milling machine for ground limestone production, include mounting bracket (1) and set firmly milling machine body (2) on mounting bracket (1), the cross section of milling machine body (2) is circular, the outside of milling machine body (2) is provided with servo motor (21), the output coaxial coupling of servo motor (21) has first belt pulley (211), milling machine body (2) internal rotation is provided with axis of rotation (22), the top and the coaxial coupling of milling machine body (2) are worn out to the one end of axis of rotation (22) have second belt pulley (221), the periphery simultaneous tensioning of first belt pulley (211) and second belt pulley (221) is around being equipped with first transmission belt (222), the outside of axis of rotation (22) is connected with grinding roller set (3), its characterized in that: the top of the flour mill body (2) is provided with a feed inlet (23), the outer side of the top of the flour mill body (2) is communicated with a feed cylinder (231) at the feed inlet (23), the wall of the feed cylinder (231) is provided with a circular arc-shaped first through groove (2311) along the periphery, the first through groove (2311) is a major arc, the outer side of the feed cylinder (231) is provided with a circular filter cloth (2312), the periphery of the filter cloth (2312) is fixedly connected with an installation frame (2313), the circle center of the filter cloth (2312) and the circle center of the feed cylinder (231) are on the circular arc of the same circle, the installation frame (2313) and the feed cylinder (231) are intersected and rotationally connected, one end of the first through groove (2311) is fixedly provided with a rotating column (2314) along the vertical direction, the rotating column (2314) penetrates through the installation frame (2313), and the outer side of the installation frame (2313) is fixedly connected with a pull rod (2315), and a discharge hole (24) is formed in the bottom of the pulverizer body (2).

2. A mill for the production of ground calcium carbonate according to claim 1, characterized in that: add feed cylinder (231) and keep away from one end rigid coupling of milling machine body (2) and have sleeve (232) of round platform form, the one end orientation that sleeve (232) bore is big sets up towards the direction of keeping away from feed cylinder (231), just the articulated apron (233) that is connected with of one end that feed cylinder (231) were kept away from in sleeve (232).

3. A mill for the production of ground calcium carbonate according to claim 1, characterized in that: the lower side of the inherent feed inlet (23) of the flour mill body (2) is provided with a material guide plate (25), and the material guide plate (25) is obliquely arranged towards one end of the grinding roller group (3) close to the inner wall of the flour mill body (2).

4. A mill for the production of ground calcium carbonate according to claim 1, characterized in that: the outside at the top of milling machine body (2) is provided with bearing frame (26), bearing inner circle and bearing inner circle coaxial coupling in bearing frame (26) are worn to establish in axis of rotation (22), the one end suspension of second belt pulley (221) is kept away from in axis of rotation (22) in milling machine body (2), the below of the inherent axis of rotation (22) of milling machine body (2) is equipped with filter screen cloth (27), the outside rigid coupling of milling machine body (2) has mount pad (2731), be provided with bobbing machine (273) on mount pad (2731), be equipped with connecting rod (2732) between bobbing machine (273) and filter screen cloth (27), connecting rod (2732) are worn to establish milling machine body (2) and both ends respectively with bobbing machine (273) and filter screen cloth (27) fixed connection, be equipped with guide cylinder (28) that round platform form and both ends link up between the inherent axis of rotation (22) of milling machine body (2) and filter screen cloth (27), the one end that guide cylinder (28) opening is big and the interior week fixed connection of milling machine body (2), the one end that guide cylinder (28) opening is little is located the top of filter screen cloth (27) and extends to the interior week of filter screen cloth (27), be equipped with the subassembly of unloading that is used for unloading filter screen cloth (27) on milling machine body (2).

5. A mill for the production of ground calcium carbonate according to claim 4, characterized in that: filter screen cloth (27) including articulated first components of a whole that can function independently (271) and second components of a whole that can function independently (272) of connecting, the outside of milling machine body (2) is equipped with vibrator (273) that link to each other with first components of a whole that can function independently (271), the subassembly of unloading includes first actuating cylinder (274) that drives, first actuating cylinder (274) that drives sets up the outside at milling machine body (2), the telescopic link of first actuating cylinder (274) that drives wears to establish in milling machine body (2) and supports the below at second components of a whole that can function independently (272), fixedly connected with bracing piece (275) on the inside wall of milling machine body (2), bracing piece (275) are located the below of the telescopic link of first actuating cylinder (274) that drives, work as during the withdrawal of first actuating cylinder (274), second components of a whole that can function independently (272) downward sloping and support on bracing piece (275), the outside of milling machine body (2) is equipped with and is used for driving the second actuating cylinder (276) that first actuating cylinder (274) that drives goes up and ) The utility model discloses a milling machine, including the telescopic link of second drive actuating cylinder (276) and the lateral wall fixed connection of first drive actuating cylinder (274), the second that supplies the telescopic link of first drive actuating cylinder (274) to wear to establish leads to groove (277) is seted up along vertical direction to one side of milling machine body (2), the below of second subdivision (272) in milling machine body (2) is equipped with secondary grinding mechanism (29).

6. A mill for the production of ground calcium carbonate according to claim 5, characterized in that: the outside of milling machine body (2) bonds and has seal layer (2771) of chooseing for use the rubber material to make, seal layer (2771) lead to groove (277) the second to block up, the middle part of seal layer (2771) is followed vertical direction and is seted up the telescopic link that supplies first drive actuating cylinder (274) and worn to establish seam (2772) of wearing to establish that slides, it is linked together to wear to establish seam (2772) and second to lead to groove (277), the telescopic link of first drive actuating cylinder (274) will wear to establish seam (2772) and strut.

7. A mill for the production of ground calcium carbonate according to claim 5 or 6, characterized in that: secondary grinding mechanism (29) is including three live-rollers (291) of mutual circumscribed and be used for driving the rotatory driving motor (292) of three live-rollers (291), live-rollers (291) rotate the inside of setting at milling machine body (2), driving motor (292) set up at milling machine body (2) outside, and are three live-rollers (291) are triangle-shaped and arrange, milling machine body (2) and coaxial coupling have third belt pulley (2911), three are worn out to establish by the one end of live-rollers (291) the common tensioning in outside of third belt pulley (2911) is around being equipped with second transmission belt (2912), the output shaft and one of them third belt pulley (2911) coaxial coupling of driving motor (292).

8. A mill for the production of ground calcium carbonate according to claim 1, characterized in that: the outside of milling machine body (2) is equipped with sliding plate (241) in the below of discharge gate (24), sliding plate (241) downward sloping sets up.