CN219319012U

CN219319012U - Sheet chromic anhydride pneumatic feeding system

Info

Publication number: CN219319012U
Application number: CN202320292728.0U
Authority: CN
Inventors: 俞基焱; 吴德红; 张佳; 刘向方; 柯尊富; 王兵
Original assignee: Hubei Zhenhua Chemical Co ltd
Current assignee: Hubei Zhenhua Chemical Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-07-07
Anticipated expiration: 2033-02-23

Abstract

The utility model relates to a rotary kiln material loading's field especially relates to a slice chromic anhydride wind feed system, it includes former feed bin, the delivery pump, roots's fan and presss from both sides cover cooling conveyer, press from both sides cover cooling conveyer and the fixed and intercommunication of feed end of rotary kiln, the unloading end department of former feed bin is fixed and the intercommunication has the auger, fixed and the intercommunication has first pipeline between the feed end of auger and delivery pump, be provided with first fan that closes on the first pipeline, fixed and the intercommunication has the tuber pipe between roots's fan and the inlet end of delivery pump, fixed and the intercommunication has the second pipeline between the discharge end of delivery pump and the cover cooling conveyer, be provided with the second on the second pipeline and close the fan, be provided with the stirring subassembly that is used for preventing the material caking in the former feed bin. The auger, the delivery pump, the Roots blower and the jacket cooling conveyor are utilized to convey raw materials, so that the rotary kiln has the effect of uniformly and continuously conveying raw materials, and is beneficial to improving the feeding efficiency and reducing the labor cost.

Description

Sheet chromic anhydride pneumatic feeding system

Technical Field

The application relates to the field of rotary kiln feeding, in particular to a sheet chromic anhydride air feeding system.

Background

Chromic anhydride, also known as chromium trioxide, is a compound which takes on a dark red or dark purple rhomboid shape, is deliquescent, and is commonly used for producing chromium compounds, oxidants and catalysts, and is used in the fields of wood corrosion prevention, electroplating and the like. In the process of processing chromic anhydride as a raw material, it is often necessary to send a sheet-shaped chromic anhydride raw material into a rotary kiln for high-temperature calcination.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: the existing common chromic anhydride kiln feeding method is that chromic anhydride raw materials are loaded through a hanging cup and then are lifted to a feeding bin of a kiln head through a single rail, the chromic anhydride raw materials enter a rotary kiln to be roasted through the feeding bin, but the chromic anhydride raw materials are transported through the hanging rail and the hanging cup and are required to be transported repeatedly, so that the efficiency is low, the manual feeding is required, and the labor cost is increased.

Disclosure of Invention

In order to solve the problems of low feeding efficiency and high labor cost of the rotary kiln, the application provides a sheet chromic anhydride air feeding system.

The application provides a slice chromic anhydride wind feed system adopts following technical scheme:

slice chromic anhydride wind feed system, including former feed bin, delivery pump, roots's fan and jacket cooling conveyer, jacket cooling conveyer and the feed end of rotary kiln are fixed and the intercommunication, the unloading end department of former feed bin is fixed and the intercommunication has the auger, the auger with fixed and the intercommunication has first pipeline between the feed end of delivery pump, be provided with first close fan on the first pipeline, roots's fan with fixed and the intercommunication has the tuber pipe between the inlet end of delivery pump, the discharge end of delivery pump with jacket cooling conveyer between fixed and the intercommunication has the second pipeline, be provided with the second on the second pipeline and close the fan, be provided with the stirring subassembly that is used for preventing the material caking in the former feed bin.

Through adopting above-mentioned technical scheme, the raw materials is stored in former feed bin, utilize stirring subassembly to stir the raw materials, prevent the raw materials caking, auger work carries the raw materials in the former feed bin to first pipeline, the delivery pump work makes the raw materials get into the second pipeline by first pipeline, roots blower work simultaneously, provide stronger power for delivery pump and second pipeline transport raw materials through the tuber pipe, utilize first fan that closes to prevent that the air current from influencing the normal unloading of auger, utilize the second fan that closes to prevent that the air current from influencing jacket cooling conveyer normal feeding, make the raw materials get into jacket cooling conveyer along the second pipeline high-efficiently, jacket cooling conveyer carries the raw materials to the feed inlet department of rotary kiln, utilize the negative pressure in the rotary kiln to introduce the kiln with the raw materials of air-borne, do benefit to and improve site environment by a wide margin, realize evenly, the effect of continuous orientation rotary kiln transport raw materials, do benefit to improving feed efficiency, and the rotary kiln cost is reduced.

Optionally, the stirring subassembly includes stirring roller and rotating electrical machines, former feed bin fixedly connected with bracing piece, the axial of stirring roller along vertical direction setting and with the bracing piece rotates to be connected, the week side fixedly connected with a plurality of stirring leaves of stirring roller, the rotating electrical machines with bracing piece fixed connection, the output of rotating electrical machines with the coaxial fixed connection of stirring roller.

Through adopting above-mentioned technical scheme, utilize rotating electrical machines drive stirring roller to rotate, the stirring roller drives a plurality of stirring leaves and rotates, does benefit to the raw materials of scattering, prevents that the raw materials from caking.

Optionally, the former feed bin sets up to the cross-section and is circular shape funnel form, a plurality of stirring leaf is followed the axial interval setting of stirring roller, the position is higher the length of stirring leaf is greater than the position is lower the length of stirring leaf, a plurality of on the same vertical plane stirring She Yuanli the one end department fixedly connected with scraper blade of stirring roller, the scraper blade with the interior perisporium butt of former feed bin.

Through adopting above-mentioned technical scheme, when the stirring roller drove a plurality of stirring leaves and rotated, the scraper blade slides along the inner peripheral wall of former feed bin, does benefit to and prevents that the raw materials from adhering on the inner peripheral wall of former feed bin, and the scraper blade is fixed with a plurality of stirring leaves in vertical direction, does benefit to the structural strength that improves the scraper blade, prevents that the scraper blade from warping.

Optionally, the stirring leaf runs through along the horizontal direction and has seted up logical groove, stirring leaf in logical inslot fixedly connected with a plurality of stirring teeth, a plurality of stirring teeth are followed the length direction interval setting of stirring leaf, the horizontal cross-section setting of stirring tooth is diamond, the pointed end orientation of stirring tooth the rotation direction setting of stirring leaf.

Through adopting above-mentioned technical scheme, through set up logical groove on the stirring leaf, do benefit to the resistance that reduces the raw materials to the stirring tooth through the pointed end of stirring tooth, do benefit to the raw materials and pass through the interval between the adjacent stirring tooth, have further improved stirring leaf and stirring tooth and have broken up the effect to the raw materials.

Optionally, the lower extreme of former feed bin is fixed and the intercommunication has the connecting cylinder, the connecting cylinder with the feed end of auger is fixed and the intercommunication, the connecting cylinder internal rotation is connected with two main crushed aggregates roller and two vice crushed aggregates rollers, main crushed aggregates roller with the axial of vice crushed aggregates roller all sets up along the horizontal direction and is parallel to each other, main crushed aggregates roller with the equal fixedly connected with of week side of vice crushed aggregates roller a plurality of stirring dogteeth, two main crushed aggregates roller is located two interval department between the vice crushed aggregates roller, the connecting cylinder outside is provided with and is used for driving two main crushed aggregates roller pivoted first drive assembly in opposite directions and is used for driving two vice crushed aggregates roller pivoted second drive assembly in opposite directions.

By adopting the technical scheme, the first driving component is utilized to drive the two main crushing rollers to rotate in opposite directions, so that the two main crushing rollers stir the raw materials downwards, and the raw materials are promoted to pass through the connecting cylinder and enter the auger between the two main crushing rollers; the second driving assembly is used for driving the two auxiliary crushing rollers to rotate in opposite directions, so that the two auxiliary crushing rollers stir the raw materials downwards, the raw materials are promoted to pass through the connecting cylinder between the auxiliary crushing rollers and the main crushing rollers to enter the auger, and meanwhile, the plurality of stirring convex teeth are used for scattering the raw materials, so that massive raw materials are prevented from entering the auger, and the raw materials are smoothly and continuously conveyed.

Optionally, the first drive assembly includes two first gears and first motor, two first gears respectively with two the coaxial fixed connection of main crushed aggregates roller, two first gears intermeshing connects, connecting cylinder fixedly connected with first support, first motor with first support fixed connection, the output of first motor with one the coaxial fixed connection of first gear.

Through adopting above-mentioned technical scheme, utilize a first motor drive first gear to rotate, through two first gear intermeshing for two main crushed aggregates roller rotate in opposite directions, realize being convenient for drive two main crushed aggregates roller pivoted effect in opposite directions.

Optionally, the second drive assembly includes two second gears and second motor, two the second gears respectively with two vice crushed aggregates roller coaxial fixed connection, connecting cylinder fixedly connected with second support, the second support is in two rotation between the second gears is connected with two intermeshing's drive gear, two the second gears respectively with two drive gear meshing is connected, the second motor with second support fixed connection, the output of second motor with one the coaxial fixed connection of second gear.

Through adopting above-mentioned technical scheme, utilize a second motor drive second gear to rotate, two second gears rotate in opposite directions through two drive gear transmission for two vice crushed aggregates roller rotate in opposite directions, realize being convenient for drive two vice crushed aggregates roller pivoted effect in opposite directions.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the auger, the delivery pump, the Roots blower and the jacket cooling conveyor are utilized to convey the raw materials, so that the raw materials are conveyed towards the rotary kiln uniformly and continuously, and are directly conveyed into the raw material bin, so that the continuous conveying of the raw materials can be ensured, the effects of improving the feeding efficiency of the rotary kiln and reducing the labor cost are realized, and the environment protection and the safety of the operating environment of workers are improved;

2. the scraping plate is beneficial to preventing raw materials from adhering to the inner peripheral wall of the raw material bin, through arranging the through grooves on the stirring blades and arranging a plurality of stirring teeth which are arranged at intervals, the scattering effect of the stirring blades and the stirring teeth on the raw materials is improved, the raw materials are prevented from caking, and the continuous conveying of the raw materials is ensured;

3. by driving the two main crushing rollers and the two auxiliary crushing rollers to rotate in opposite directions, the stirring of the raw materials downwards is facilitated, the raw materials are promoted to smoothly enter the auger after passing through the connecting cylinder, the raw materials are scattered by the plurality of stirring convex teeth, the large raw materials are further prevented from entering the auger, and the continuous conveying of the raw materials is facilitated.

Drawings

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

Fig. 2 is a cross-sectional view of the raw material bin and its internal structure along the vertical direction in the embodiment of the present application.

Fig. 3 is a cross-sectional view of the connecting cylinder and its internal structure in the horizontal direction in the embodiment of the present application.

Reference numerals: 1. a raw material bin; 2. a transfer pump; 3. roots blower; 4. jacket cooling conveyor; 5. a rotary kiln; 6. an auger; 7. a connecting cylinder; 8. a first pipe; 9. a first fan is closed; 10. an air duct; 11. a second pipe; 12. a second fan is turned off; 13. a stirring roller; 14. a rotating electric machine; 15. a support rod; 16. stirring the leaves; 17. a scraper; 18. a through groove; 19. stirring teeth; 20. a main crushing roller; 21. an auxiliary crushing roller; 22. a first bracket; 23. a second bracket; 24. a main rotating shaft; 25. an auxiliary rotating shaft; 26. a material stirring convex tooth; 27. a first gear; 28. a first motor; 29. a second gear; 30. a second motor; 31. a transmission gear.

Description of the embodiments

The present application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses a sheet chromic anhydride pneumatic feeding system.

Referring to fig. 1, the sheet chromic anhydride wind feeding system comprises a raw material bin 1, a conveying pump 2, a Roots blower 3 and a jacket cooling conveyor 4, wherein the jacket cooling conveyor 4 is fixed and communicated with the feeding end of a rotary kiln 5, an auger 6 is arranged at the discharging end of the raw material bin 1, the raw material bin 1 is arranged in a funnel shape with a circular section, a connecting cylinder 7 is coaxially fixed and communicated with the lower end of the raw material bin 1, the connecting cylinder 7 is fixed and communicated with the feeding end of the auger 6, and a stirring assembly for preventing materials from caking is arranged in the raw material bin 1.

Referring to fig. 1, a first pipeline 8 is fixed and communicated between a packing auger 6 and a feeding end of a conveying pump 2, a first fan 9 is arranged on the first pipeline 8, an air pipe 10 is fixed and communicated between a Roots fan 3 and an air inlet end of the conveying pump 2, a second pipeline 11 is fixed and communicated between a discharging end of the conveying pump 2 and a jacket cooling conveyor 4, and a second fan 12 is arranged on the second pipeline 11.

The broken sheet chromic anhydride raw materials are stored in the raw material bin 1, the raw materials are stirred by the stirring assembly, raw material caking is prevented, the raw materials in the raw material bin 1 are conveyed to the first pipeline 8 by the operation of the auger 6, the raw materials enter the second pipeline 11 from the first pipeline 8 by the operation of the conveying pump 2, meanwhile, the Roots blower 3 is operated, and stronger power is provided for conveying the raw materials by the conveying pump 2 and the second pipeline 11 through the air pipe 10.

The first air-off machine 9 is used for preventing air flow from influencing normal discharging of the auger 6, the second air-off machine 12 is used for preventing air flow from influencing normal feeding of the jacket cooling conveyor 4, raw materials efficiently enter the jacket cooling conveyor 4 along the second pipeline 11, the jacket cooling conveyor 4 conveys the raw materials to a feed inlet of the rotary kiln 5, air-fed raw materials are introduced into the kiln by negative pressure in the rotary kiln 5, the on-site environment is greatly improved, and the jacket cooling conveyor 4 can prevent high temperature in the rotary kiln 5 from influencing conveying of the raw materials.

Utilize auger 6, delivery pump 2, roots's fan 3 and jacket cooling conveyer 4 to carry the raw materials, do benefit to evenly, carry the raw materials towards rotary kiln 5 in succession, and directly send the raw materials into former feed bin 1, can guarantee the continuous transport of raw materials, realized improving rotary kiln 5's feed efficiency, reduce the effect of human cost, and do benefit to improvement workman operational environment's feature of environmental protection, security.

Referring to fig. 2, in order to prevent raw materials caking, the stirring assembly includes stirring roller 13 and rotating electrical machines 14, and the upper end opening part fixedly connected with bracing piece 15 of former feed bin 1, the axial of stirring roller 13 along vertical direction and the coaxial setting of former feed bin 1 and with bracing piece 15 rotation connection, the week side fixedly connected with of stirring roller 13 a plurality of stirring leaves 16, rotating electrical machines 14 and bracing piece 15 fixed connection, the output of rotating electrical machines 14 and the coaxial fixed connection of stirring roller 13.

Referring to fig. 2, a plurality of stirring blades 16 are arranged at intervals along the axial direction of the stirring roller 13, the length of the stirring blade 16 with a higher position is greater than that of the stirring blade 16 with a lower position, a scraper 17 is fixedly connected to one end of the stirring blade 16, which is far away from the stirring roller 13, on the same vertical plane, and the scraper 17 is abutted with the inner peripheral wall of the raw material bin 1.

Referring to fig. 2, the stirring blade 16 is provided with a through groove 18 penetrating in the horizontal direction, the stirring blade 16 is fixedly connected with a plurality of stirring teeth 19 in the through groove 18, the plurality of stirring teeth 19 are arranged at equal intervals along the length direction of the stirring blade 16, the horizontal section of the stirring teeth 19 is provided with a diamond shape, and the tips of the stirring teeth 19 are arranged towards the rotation direction of the stirring blade 16.

The stirring roller 13 is driven to rotate by the rotary motor 14, the stirring roller 13 drives the stirring blades 16 to rotate and drives the scraping plates 17 to slide along the inner peripheral wall of the raw material bin 1, the stirring blades 16 and the stirring teeth 19 are beneficial to scattering raw materials, the scraping plates 17 are beneficial to preventing raw materials from adhering to the inner peripheral wall of the raw material bin 1, the scraping plates 17 are fixed with the stirring blades 16 in the vertical direction, and the structural strength of the scraping plates 17 is beneficial to improving and preventing the scraping plates 17 from deforming.

Through set up logical groove 18 on stirring leaf 16, do benefit to the resistance that reduces the raw materials to stirring tooth 19 through the pointed end of stirring tooth 19, do benefit to the raw materials and pass through the interval between the adjacent stirring tooth 19, further improved stirring leaf 16 and stirring tooth 19 and to the effect of scattering of raw materials, realize preventing the effect of raw materials caking promptly.

Referring to fig. 2 and 3, in order to further prevent bulk raw materials from entering the packing auger 6, the connecting cylinder 7 is rotatably connected with two main crushing rolls 20 and two auxiliary crushing rolls 21, the axial directions of the main crushing rolls 20 and the auxiliary crushing rolls 21 are all arranged along the horizontal direction and are parallel to each other, two sides of the outer part of the connecting cylinder 7 are respectively fixedly connected with a first bracket 22 and a second bracket 23, the main crushing rolls 20 are coaxially and fixedly connected with a main rotating shaft 24, the auxiliary crushing rolls 21 are coaxially and fixedly connected with an auxiliary rotating shaft 25, and the main rotating shaft 24 and the auxiliary rotating shaft 25 are all arranged in the connecting cylinder 7 in a penetrating manner and are rotatably connected between the first bracket 22 and the second bracket 23.

Referring to fig. 3, two main crushing rolls 20 are located at the interval between two auxiliary crushing rolls 21, a plurality of stirring teeth 26 are fixedly connected to the peripheral sides of the main crushing rolls 20 and the auxiliary crushing rolls 21, and a first driving assembly for driving the two main crushing rolls 20 to rotate in opposite directions and a second driving assembly for driving the two auxiliary crushing rolls 21 to rotate in opposite directions are arranged outside the connecting cylinder 7.

The first driving component is used for driving the two main crushing rollers 20 to rotate in opposite directions, so that the two main crushing rollers 20 stir raw materials downwards, and the raw materials are promoted to pass through the connecting cylinder 7 between the two main crushing rollers 20 and enter the auger 6; the two auxiliary crushing rollers 21 are driven by the second driving assembly to rotate in opposite directions, so that the two auxiliary crushing rollers 21 stir raw materials downwards, and the raw materials are promoted to pass through the connecting cylinder 7 and enter the auger 6 between the auxiliary crushing rollers 21 and the main crushing rollers 20.

The first support 22 and the second support 23 are used for stably supporting the main crushing roller 20 and the auxiliary crushing roller 21, and meanwhile, the plurality of stirring convex teeth 26 are used for scattering raw materials, so that the effect of preventing massive raw materials from entering the auger 6 is achieved, the blocking of pipelines by the massive raw materials is prevented, and smooth and continuous conveying of the raw materials is facilitated.

Referring to fig. 3, in order to facilitate the rotation of the main and auxiliary crushing rolls 20 and 21, the first driving assembly includes two first gears 27 and a first motor 28, the two first gears 27 are fixedly connected with the two main rotating shafts 24 coaxially, the two first gears 27 are engaged with each other, the first motor 28 is fixedly connected with the first bracket 22, and the output end of the first motor 28 is fixedly connected with one first gear 27 coaxially.

Referring to fig. 3, the second driving assembly includes two second gears 29 and a second motor 30, the two second gears 29 are coaxially and fixedly connected with the two auxiliary rotating shafts 25, two transmission gears 31 engaged with each other are rotatably connected between the two second gears 29 of the second bracket 23, the two second gears 29 are respectively engaged with the two transmission gears 31, the second motor 30 is fixedly connected with the second bracket 23, and an output end of the second motor 30 is coaxially and fixedly connected with one second gear 29.

The first motor 28 is used for driving one first gear 27 and the main rotating shaft 24 to rotate, the two main crushing rollers 20 are meshed with each other through the two first gears 27, the second motor 30 is used for driving one second gear 29 and the auxiliary rotating shaft 25 to rotate, the two second gears 29 are driven by the two transmission gears 31 to rotate in opposite directions, the two auxiliary crushing rollers 21 are driven to rotate in opposite directions, and the effect of conveniently driving the main crushing rollers 20 and the auxiliary crushing rollers 21 to rotate is achieved.

The implementation principle of the sheet chromic anhydride air-feeding system in the embodiment of the application is as follows:

the rotating motor 14 drives the stirring roller 13 to drive the stirring blades 16 and the scraping plates 17 to rotate, so that the stirring blades 16 and the stirring teeth 19 break up raw materials, and the scraping plates 17 scrape down the raw materials adhered to the inner peripheral wall of the raw material bin 1 to prevent the raw materials from caking; the first motor 28 and the second motor 30 are used for respectively driving the two main crushing rollers 20 and the two auxiliary crushing rollers 21 to rotate in opposite directions, and the plurality of stirring convex teeth 26 are used for scattering raw materials when stirring the raw materials downwards, so that the large-block raw materials are prevented from entering the auger 6.

The auger 6 works to enable raw materials to be conveyed to the first pipeline 8, the conveying pump 2 and the Roots blower 3 work to enable raw materials to efficiently enter the jacket cooling conveyor 4 along the first pipeline 8 and the second pipeline 11, the jacket cooling conveyor 4 conveys raw materials to the feed inlet of the rotary kiln 5, and the air-conveyed raw materials are introduced into the kiln by utilizing negative pressure in the rotary kiln 5, so that the effects of improving the feed efficiency of the rotary kiln 5 and reducing the labor cost are achieved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A sheet chromic anhydride pneumatic feed system, characterized in that: including former feed bin (1), delivery pump (2), roots's fan (3) and jacket cooling conveyer (4), jacket cooling conveyer (4) and the feed end of rotary kiln (5) are fixed and the intercommunication, the unloading end department of former feed bin (1) is fixed and the intercommunication has auger (6), auger (6) with fixed and the intercommunication has first pipeline (8) between the feed end of delivery pump (2), be provided with first close fan (9) on first pipeline (8), roots's fan (3) with fixed and the intercommunication has tuber pipe (10) between the inlet end of delivery pump (2), the discharge end of delivery pump (2) with fixed and the intercommunication has second pipeline (11) between jacket cooling conveyer (4), be provided with second close fan (12) on second pipeline (11), be provided with the stirring subassembly that is used for preventing the material caking in former feed bin (1).

2. The sheet chromic anhydride air feed system according to claim 1, wherein: the stirring assembly comprises a stirring roller (13) and a rotating motor (14), wherein the raw material bin (1) is fixedly connected with a supporting rod (15), the stirring roller (13) is axially arranged in the vertical direction and is rotationally connected with the supporting rod (15), a plurality of stirring blades (16) are fixedly connected to the periphery of the stirring roller (13), the rotating motor (14) is fixedly connected with the supporting rod (15), and the output end of the rotating motor (14) is fixedly connected with the stirring roller (13) in a coaxial mode.

3. The sheet chromic anhydride air feed system according to claim 2, wherein: raw material bin (1) sets up to the cross-section for circular shape funnel form, a plurality of stirring leaf (16) are followed the axial interval setting of stirring roller (13), and the position is higher the length of stirring leaf (16) is greater than the position is lower the length of stirring leaf (16), a plurality of on the same vertical plane stirring leaf (16) are kept away from the one end department fixedly connected with scraper blade (17) of stirring roller (13), scraper blade (17) with the inner peripheral wall butt of raw material bin (1).

4. The sheet chromic anhydride air feed system according to claim 2, wherein: through grooves (18) are formed in the stirring blades (16) in a penetrating mode in the horizontal direction, a plurality of stirring teeth (19) are fixedly connected in the through grooves (18) through the stirring blades (16), the stirring teeth (19) are arranged at intervals in the length direction of the stirring blades (16), the horizontal sections of the stirring teeth (19) are diamond-shaped, and the tips of the stirring teeth (19) face the rotation direction of the stirring blades (16).

5. The sheet chromic anhydride air feed system according to claim 1, wherein: the utility model discloses a conveyer belt conveyor, including former feed bin (1), feed end, auger (6), connecting cylinder (7) with feed end of auger (6) is fixed and communicates, connecting cylinder (7) internal rotation is connected with two main crushed aggregates roller (20) and two vice crushed aggregates roller (21), main crushed aggregates roller (20) with the axial of vice crushed aggregates roller (21) all sets up along the horizontal direction and is parallel to each other, main crushed aggregates roller (20) with all fixedly connected with in week side of vice crushed aggregates roller (21) a plurality of stirring dogtooth (26), two main crushed aggregates roller (20) are located two interval department between vice crushed aggregates roller (21), connecting cylinder (7) outside is provided with and is used for driving two main crushed aggregates roller (20) pivoted first drive assembly in opposite directions, and is used for driving two vice crushed aggregates roller (21) pivoted second drive assembly in opposite directions.

6. The sheet chromic anhydride air feed system according to claim 5, wherein: the first driving assembly comprises two first gears (27) and a first motor (28), the two first gears (27) are respectively and fixedly connected with the two main crushing rollers (20) coaxially, the two first gears (27) are connected with each other in a meshed mode, the connecting cylinder (7) is fixedly connected with a first support (22), the first motor (28) is fixedly connected with the first support (22), and the output end of the first motor (28) is fixedly connected with one first gear (27) coaxially.

7. The sheet chromic anhydride air feed system according to claim 5, wherein: the second driving assembly comprises two second gears (29) and a second motor (30), the two second gears (29) are respectively and fixedly connected with the two auxiliary crushing rollers (21) coaxially, the connecting cylinder (7) is fixedly connected with a second support (23), the second support (23) is rotatably connected with two transmission gears (31) which are in meshed connection between the two second gears (29), the two second gears (29) are respectively and fixedly connected with the two transmission gears (31), the second motor (30) is fixedly connected with the second support (23), and the output end of the second motor (30) is fixedly connected with one second gear (29) coaxially.