CN212999903U - Powder feeding device - Google Patents

Abstract

The utility model relates to a reinforced processing technology field of powder discloses a material device is thrown to powder. The utility model discloses a material device is thrown to powder includes the fan, the exhaust column and throw the material subassembly, throw the material subassembly including throwing the feed cylinder, pass the feed cylinder and with the biography feed pipe that passes the bottom intercommunication of feed cylinder, pass the feed cylinder be located the inside of throwing the feed cylinder and link to each other with the inside wall of throwing the feed cylinder, the top level of throwing the feed cylinder is provided with the apron, the articulated rotatory apron that is provided with on the apron, when rotatory apron is the level form, the lateral wall of rotatory apron and apron is laminated mutually and the lid closes in the upper end of throwing the feed cylinder, the upper portion level of the inside wall of throwing the feed cylinder is provided with the protection network, the protection network is located between biography feed cylinder and the rotatory apron, the one end of exhaust column is passed the apron and is fed through with the inside of throwing the. The utility model has the characteristics of the security is high.

Description

Powder feeding device

Technical Field

The utility model relates to a reinforced processing technology field of powder, in particular to material device is thrown to powder.

Background

Alkyd resin is one of the main components of some coatings, and phthalic anhydride is required to be added into a reaction kettle in the production process of the alkyd resin, and the phthalic anhydride generates alkyd reaction in the reaction kettle. At present, the production raw material of phthalic anhydride is generally fed manually, and during feeding, a packaging bag filled with phthalic anhydride is firstly cut, then the phthalic anhydride is poured into a feeding port, and the phthalic anhydride enters a reaction kettle below the feeding port through the feeding port. Due to the convection action of air, phthalic anhydride is easy to float into the air when fed, thereby damaging the health of workers and having low safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a material device is thrown to powder has the high characteristics of security.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a powder feeding device, includes fan, exhaust column and throws the material subassembly, throw the material subassembly including throw the feed cylinder, pass the feed cylinder and with the biography feed pipe of the bottom intercommunication of biography feed cylinder, the biography feed cylinder is located throw the inside of feed cylinder and with the inside wall of throwing the feed cylinder links to each other, the top level of throwing the feed cylinder is provided with the apron, the articulated rotatory apron that is provided with on the apron, work as when rotatory apron is the level form, rotatory apron with the lateral wall of apron is laminated mutually and the lid closes throw the upper end of feed cylinder, the upper portion level of the inside wall of throwing the feed cylinder is provided with the protection network, the protection network is located pass the feed cylinder with between the rotatory apron, the one end of exhaust column is passed the apron and with the inside intercommunication of throwing the feed cylinder, the other end of exhaust column with the fan intercommunication.

It should be understood that the reaction vessel below the material transfer pipe and the material feeding valve arranged on the reaction vessel are commonly constructed on the market, and the connecting structure of the material transfer pipe and the reaction vessel is a conventional structure, so that the understanding of the scope of the actual protection of the present application by those skilled in the art is not affected even if not described.

Through adopting above-mentioned technical scheme, when throwing the material, open rotatory apron, cut the wrapping bag that is equipped with phthalic anhydride, pour phthalic anhydride into and throw the feed cylinder, phthalic anhydride passes the protection network and falls into the biography feed cylinder, passes through the material pipe afterwards and gets into in the reation kettle. And (4) working the fan, pumping the phthalic anhydride floated during feeding to the fan through the exhaust pipe, and then discharging the phthalic anhydride outdoors through the fan. Wherein, throw the ground that the top of a feed cylinder is higher than the workshop, the workman of being convenient for will be equipped with the wrapping bag of phthalic anhydride and remove to the top of throwing the feed cylinder, and simultaneously, the protection network not only can smash the phthalic anhydride of caking, makes throw material smoothly not block up, can block moreover and be arranged in the wrapping bag of dress phthalic anhydride to fall into and pass through the material pipe and get into reation kettle behind the material pipe, has avoided the wrapping bag to the influence of chemical reaction in the reation kettle, has promoted production machining efficiency. The rotatory apron that the articulated setting was gone up to the apron can be opened in a flexible way, promotes the operation flexibility ratio when throwing the material. The cover plate is fixedly connected with the top of the feeding barrel, and the part of the top of the feeding barrel, which is covered by the cover plate, is not communicated with the outside, so that the phthalic anhydride which is lifted up during feeding is reduced from flowing out of the feeding barrel. The apron is passed to the one end of exhaust column, and when opening rotatory apron, the exhaust column can support rotatory apron, thereby the rotatory apron takes place to rotate when preventing to throw the material and influences and throw the material. By adopting the technical scheme, the phthalic anhydride is effectively reduced to flow out of the feeding cylinder, the processing environment quality is improved, the damage to the health of workers is reduced, and the feeding safety is high.

The utility model discloses a further set up to: the device comprises a cover plate, a protective net and a blocking net, wherein the protective net is provided with the blocking net, the upper end and the lower end of the blocking net are fixedly connected with the bottom of the cover plate and the protective net respectively, and the two sides of the blocking net are connected with the inner side wall of the feeding barrel.

Through adopting above-mentioned technical scheme, set up the block, the block all around respectively with the bottom of apron, protection network and throw the inside wall of feed cylinder and be connected. The block not only can improve the stability of protection network, can prevent moreover that the wrapping bag that is used for adorning phthalic anhydride from falling into between the bottom of protection network and apron and pass the feed pipe after getting into reation kettle, avoided the wrapping bag to the influence of the chemical reaction in the reation kettle, promoted production machining efficiency.

The utility model discloses a further set up to: the utility model discloses a material feeding device, including feeding barrel, spacing post, gag lever post, limiting ring, limiting rod, connecting rod, gag lever post, limiting ring, limiting rod, material hook, the top of material hook is the point form, two spacing holes have been seted up on the lateral wall of feeding barrel, be provided with a plurality of spacing ring on the feeding barrel and be two gag lever posts that parallel of level form, every the gag lever post passes one respectively spacing hole and at least one the spacing ring, two the gag lever post is located be provided with the connecting rod between the outer one end of feeding barrel, the gag lever post is kept away from the vertical material hook that is provided with.

Through adopting above-mentioned technical scheme, when throwing the material, can open rotatory apron earlier, drop in the material feeding cylinder and fall on the protective screen and offset with spacing post and material hook with bagged phthalic anhydride, because the top of spacing post and material hook all is sharp form, and because phthalic anhydride's action of gravity, the outside wrapping bag of phthalic anhydride can be impaled at the top of spacing post and material hook. Afterwards, close the upper end to throwing the feed cylinder with rotatory apron lid, the outer connecting rod of feed cylinder makes the connecting rod keep away from gradually throwing the feed cylinder, and the connecting rod drives the gag lever post and then drives the material hook and remove, because spacing effect and the sharp form setting at material hook top of spacing post to the wrapping bag that is equipped with phthalic anhydride, the material hook that removes can rip the wrapping bag that is equipped with phthalic anhydride, then phthalic anhydride passes the protection network and falls into in the biography feed cylinder, again through in the material pipe gets into reation kettle of passing. When the packaging bag is cut, the rotary cover plate and the feeding barrel can be closed, namely, the feeding barrel is not communicated with the outside, so that the phthalic anhydride is effectively reduced from flowing out of the feeding barrel, the phthalic anhydride contacted and scattered by workers is reduced, and the damage of the phthalic anhydride to the health of the workers is reduced. The tops of the limiting column and the material hook are both pointed, so that the tops of the limiting column and the material hook can penetrate through the packaging bag filled with phthalic anhydride. Because the limiting action in spacing ring and spacing hole, the gag lever post can drive the material hook and remove on set track, thereby it takes place to sway or rock the influence and splits the wrapping bag that is equipped with phthalic anhydride to reduce the material hook at the removal in-process, has promoted and has thrown material efficiency, has reduced workman's contact phthalic anhydride, has improved and has thrown material security, rational in infrastructure, the operation of being convenient for.

The utility model discloses a further set up to: the material hook comprises a conical hook head and a cylindrical hook body fixedly connected with the bottom of the hook head, and the area of the bottom surface of the hook head is larger than that of the cross section of the hook body.

By adopting the technical scheme, the column head of the limiting column is conical, so that the column head can penetrate through the packaging bag filled with the phthalic anhydride conveniently, the area of the bottom surface of the column head is larger than that of the cross section of the column body, and the positioning of the packaging bag by the limiting column is facilitated. The gib head of material hook is conical, is favorable to the gib head to pierce through the wrapping bag that is equipped with phthalic anhydride, and the area of the bottom surface of gib head is greater than the area of the cross section of coupler body, is favorable to reducing the area of contact of coupler body and wrapping bag, improves the effort of coupler body to wrapping bag unit area, has promoted the effect of splitting of material hook to the wrapping bag, improves and throws material efficiency.

The utility model discloses a further set up to: the limiting rod is provided with a baffle which is positioned between the connecting rod and the feeding barrel, and when the baffle is abutted against the outer side wall of the feeding barrel, the two material hooks and the two limiting columns are positioned on the same straight line.

Through adopting above-mentioned technical scheme, when the baffle offseted with the lateral wall of throwing the feed cylinder, two material hooks and two spacing posts were located same straight line, can make material hook and spacing post pierce through the position of being equipped with the wrapping bag of phthalic anhydride and be close to, were favorable to the material hook to split the wrapping bag. The setting of baffle can be effectively spacing to the removal of material hook, is favorable to controlling material hook and spacing post to be in on the same straight line to promote the material hook and to the effect of splitting of wrapping bag, improved and thrown material efficiency.

The utility model discloses a further set up to: one side of the baffle close to the charging barrel is arc-shaped and matched with the outer side wall of the charging barrel.

Through adopting above-mentioned technical scheme, the baffle is close to one side of throwing the feed cylinder for with throw the lateral wall matched with circular-arc of feed cylinder, when the baffle with throw the lateral wall of feed cylinder when offseting, can make the lateral wall of baffle better with the lateral wall laminating of throwing the feed cylinder, not only make the material hook more steady at the removal in-process, be favorable to carrying out more accurate spacing to the material hook in addition, the design is exquisite, easy and simple to handle.

The utility model discloses a further set up to: the bag-type dust collector is characterized in that a bag-type dust collector is arranged on the exhaust pipe and comprises a dust collection shell, two ends of the dust collection shell are respectively communicated with the exhaust pipe, a recovery pipe communicated with the dust collection shell is arranged at the bottom end of the dust collection shell, and a recovery valve is arranged on the recovery pipe.

Through adopting above-mentioned technical scheme, when throwing the material, throw near the feed cylinder phthalic anhydride that floats and take out to the draught tube in because the negative pressure effect, and then get into the sack cleaner, through the filtering action of sack cleaner and the action of gravity of phthalic anhydride, phthalic anhydride can descend gradually to the dust removal shell of sack cleaner in, and then retrieves phthalic anhydride. The arrangement of the bag-type dust collector not only reduces the environmental pollution caused by the phthalic anhydride discharged by the fan, but also is beneficial to the recovery of the phthalic anhydride and reduces the waste of the phthalic anhydride.

The utility model discloses a further set up to: the exhaust pipe comprises exhaust branch pipes, a first exhaust main pipe and a second exhaust main pipe, the exhaust branch pipes are communicated with the feeding barrel and are multiple, the exhaust branch pipes are communicated with the first exhaust main pipe, the first exhaust main pipe is arranged between the second exhaust main pipes, the bag-type dust remover is arranged between the second exhaust main pipes, and one end of the bag-type dust remover is connected with the fan.

Through adopting above-mentioned technical scheme, the phthalic anhydride that floats near a plurality of charging barrels is because the negative pressure effect is taken out to the convulsions branch pipe that is connected along with the air current in, and then takes out to first convulsions house steward, retrieves through the filtration of sack cleaner, and the air current after the filtration gets into the fan through second convulsions house steward, and then through the fan discharge outdoor. By adopting the technical scheme, the recovery of phthalic anhydride is facilitated, the integrated design of production equipment is facilitated, the workload of workers is reduced, resources are saved, the production cost is reduced, and the economic benefit is improved.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the feeding assembly improves the quality of a processing environment, reduces the damage to the health of workers and has high feeding safety.

The setting of spacing post and material hook can make rotatory apron and throw the feed cylinder lid and close when splitting the wrapping bag, and is rational in infrastructure, and the operation of being convenient for has promoted and has thrown material efficiency, has reduced workman's contact phthalic anhydride, has improved and has thrown the material security.

The exhaust pipe comprises a plurality of exhaust branch pipes, so that the integrated design of production equipment is facilitated, the workload of workers is reduced, resources are saved, the production cost is reduced, and the economic benefit is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a cross-sectional view of an embodiment of a powder feeding device of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a schematic structural diagram of an embodiment of a powder feeding device according to the present invention;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is an enlarged view of portion C of FIG. 3;

fig. 6 is a schematic structural diagram of an embodiment of the powder feeding device of the present invention.

In the figure, 1, a fan; 2. an exhaust pipe; 3. a charging barrel; 4. a material conveying barrel; 5. a material conveying pipe; 6. a cover plate; 7. rotating the cover plate; 8. a protective net; 9. blocking; 10. a limiting column; 11. a limiting hole; 12. a limiting ring; 13. a limiting rod; 14. a connecting rod; 15. material hooking; 16. a column cap; 17. a cylinder; 18. a hook head; 19. a hook body; 20. a baffle plate; 21. a dust removal housing; 22. a material recovery pipe; 23. a recovery valve; 24. an air draft branch pipe; 25. a first main draft pipe; 26. a second main draft.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings and specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example 1: a powder feeding device, as shown in fig. 1-6: including fan 1, exhaust column 2 and throw the material subassembly, throw the material subassembly including throwing feed cylinder 3, pass feed cylinder 4 and with the biography charge pipe 5 that passes feed cylinder 4's bottom intercommunication, pass feed cylinder 4 be located the inside of throwing feed cylinder 3 and link to each other with the inside wall of throwing feed cylinder 3, the top level of throwing feed cylinder 3 is provided with apron 6, the articulated rotatory apron 7 that is provided with on apron 6, when rotatory apron 7 is the level form, the lateral wall of rotatory apron 7 and apron 6 is laminated mutually and the lid closes in the upper end of throwing feed cylinder 3, the upper portion level of the inside wall of throwing feed cylinder 3 is provided with protection network 8, protection network 8 is located between pass feed cylinder 4 and the rotatory apron 7, the one end of exhaust column 2 is passed apron 6 and is linked together with the inside of throwing feed cylinder 3, the other end and the fan 1 intercommunication of exhaust column 2.

The protective net 8 is provided with a blocking net 9, the upper end and the lower end of the blocking net 9 are fixedly connected with the bottom of the cover plate 6 and the protective net 8 respectively, and the two sides of the blocking net 9 are connected with the inner side wall of the feeding barrel 3.

Vertical two spacing posts 10 that are provided with on the protection network 8, the top of spacing post 10 is the point form, throw and seted up two spacing holes 11 on the lateral wall of a material section of thick bamboo 3, be provided with a plurality of spacing ring 12 on the protection network 8 and be two gag lever posts 13 that parallel of level form, every gag lever post 13 passes a spacing hole 11 and two gag lever posts 12 respectively, two gag lever posts 13 are located and are provided with connecting rod 14 between the outer one end of a material section of thick bamboo 3 of throwing, the vertical material hook 15 that is provided with of one end that connecting rod 14 was kept away from to gag lever post 13, the top of material hook 15 is the point form.

The spacing column 10 comprises a conical column head 16 and a cylindrical column body 17 fixedly connected with the bottom of the column head 16, the area of the bottom surface of the column head 16 is larger than that of the cross section of the column body 17, the material hook 15 comprises a conical hook head 18 and a cylindrical hook body 19 fixedly connected with the bottom of the hook head 18, and the area of the bottom surface of the hook head 18 is larger than that of the cross section of the hook body 19.

The limiting rod 13 is provided with a baffle 20, the baffle 20 is positioned between the connecting rod 14 and the charging barrel 3, and when the baffle 20 is abutted against the outer side wall of the charging barrel 3, the two material hooks 15 and the two limiting columns 10 are positioned on the same straight line.

One side of the baffle 20 close to the feeding barrel 3 is arc-shaped and matched with the outer side wall of the feeding barrel 3.

Be provided with the sack cleaner on exhaust column 2, the sack cleaner includes dust removal shell 21, and the both ends of dust removal shell 21 communicate with exhaust column 2 respectively, and the bottom of dust removal shell 21 is provided with the recovery pipe 22 with dust removal shell 21 intercommunication, is provided with recovery valve 23 on the recovery pipe 22.

The exhaust pipe 2 comprises exhaust branch pipes 24, a first exhaust main pipe 25 and a second exhaust main pipe 26, the exhaust branch pipes 24 are communicated with the feeding barrel 3, the three exhaust branch pipes 24 are communicated with the first exhaust main pipe 25, a bag-type dust remover is arranged between the first exhaust main pipe 25 and the second exhaust main pipe 26, and one end, far away from the bag-type dust remover, of the second exhaust main pipe 26 is connected with the fan 1.

When feeding, open rotatory apron 7, cut the wrapping bag that is equipped with phthalic anhydride, pour phthalic anhydride into and throw charging barrel 3 in, phthalic anhydride passes protection network 8 and falls into and passes charging barrel 4, passes through then and passes through charging pipe 5 and get into the reation kettle. The fan 1 works, and the phthalic anhydride floated during feeding is pumped to the fan 1 through the exhaust pipe 2 and then discharged outdoors through the fan 1. Wherein, throw the ground that the top of feed cylinder 3 is higher than the workshop, the workman of being convenient for will be equipped with the wrapping bag of phthalic anhydride and remove to the top of throwing feed cylinder 3, and simultaneously, protection network 8 not only can smash the phthalic anhydride of caking, makes to throw the material smoothly not blockking up, can block moreover that the wrapping bag that is used for adorning phthalic anhydride falls into and passes through material pipe 5 and get into reation kettle behind the material cylinder 4, has avoided the wrapping bag to the influence of chemical reaction in the reation kettle, has promoted production machining efficiency. The rotary cover plate 7 hinged on the cover plate 6 can be flexibly opened, and the operation flexibility during feeding is improved. The cover plate 6 is fixedly connected with the top of the feeding barrel 3, and the part of the top of the feeding barrel 3 covered by the cover plate 6 is not communicated with the outside, so that the phthalic anhydride flying out of the feeding barrel 3 during feeding is reduced. The apron 6 is passed to the one end of exhaust column 2, and when opening rotatory apron 7, exhaust column 2 can support rotatory apron 7, thereby rotatory apron 7 takes place to rotate when preventing to throw the material and throws the material. Above setting up very effectively reduces phthalic anhydride and drifts out and throw the feed cylinder 3 outside, has promoted processing environment quality, has reduced the healthy damage of workman, throws the material security height.

A blocking net 9 is arranged, and the periphery of the blocking net 9 is respectively connected with the bottom of the cover plate 6, the protective net 8 and the inner side wall of the charging barrel 3. The block 9 not only can improve the stability of protection network 8, can prevent moreover that the wrapping bag that is used for adorning phthalic anhydride from falling into between the bottom of protection network 8 and apron 6 and pass behind the feed cylinder 4 during the feed pipe 5 gets into reation kettle, has avoided the wrapping bag to have promoted production machining efficiency to the influence of reation kettle internal chemical reaction.

When throwing the material, can open earlier rotatory apron 7, throw the phthalic anhydride in bags into throw the feed cylinder 3 in and fall on the protection network 8 and offset with spacing post 10 and material hook 15, because the top of spacing post 10 and material hook 15 all is the point form, and because the action of gravity of phthalic anhydride, the outside wrapping bag of phthalic anhydride can be impaled at the top of spacing post 10 and material hook 15. Subsequently, close the upper end to throwing feed cylinder 3 with rotatory apron 7 lid, the outer connecting rod 14 of pulling feed cylinder 3 makes connecting rod 14 keep away from gradually throwing feed cylinder 3, connecting rod 14 drives gag lever post 13 and then drives material hook 15 and removes, because the point form setting at spacing effect and material hook 15 top of spacing post 10 to the wrapping bag that is equipped with phthalic anhydride, the wrapping bag that is equipped with phthalic anhydride can be cut apart to the material hook 15 that removes, then phthalic anhydride passes in protection network 8 falls into conveying cylinder 4, again through conveying pipe 5 gets into in the reation kettle. When the packaging bag is cut, the rotary cover plate 7 and the feeding barrel 3 can be covered, namely, the feeding barrel 3 is not communicated with the outside, so that the phthalic anhydride is effectively reduced from flowing out of the feeding barrel 3, the phthalic anhydride contacted and scattered by workers is reduced, and the damage of the phthalic anhydride to the health of the workers is reduced. The tops of the limiting column 10 and the material hook 15 are both in a pointed shape, so that the tops of the limiting column 10 and the material hook 15 can penetrate through the packaging bag filled with phthalic anhydride. Because spacing 12 and spacing hole 11's limiting displacement, gag lever post 13 can drive material hook 15 and remove on set track, thereby it takes place to sway or rock at the removal in-process to reduce material hook 15 and influences the wrapping bag that the fracture was equipped with phthalic anhydride, has promoted and has thrown material efficiency, has reduced workman's contact phthalic anhydride, has improved and has thrown the material security, rational in infrastructure, the operation of being convenient for.

The column head 16 of the limiting column 10 is conical, so that the column head 16 can penetrate through a packaging bag filled with phthalic anhydride, the area of the bottom surface of the column head 16 is larger than that of the cross section of the column body 17, and the positioning of the packaging bag by the limiting column 10 is facilitated. The hook head 18 of the material hook 15 is conical, so that the hook head 18 can penetrate through a packaging bag filled with phthalic anhydride conveniently, the area of the bottom surface of the hook head 18 is larger than that of the cross section of the hook body 19, the contact area of the hook body 19 and the packaging bag can be reduced conveniently, the acting force of the hook body 19 on the unit area of the packaging bag can be improved, the cutting effect of the material hook 15 on the packaging bag can be improved, and the feeding efficiency can be improved.

When the baffle 20 is abutted against the outer side wall of the charging barrel 3, the two material hooks 15 and the two limiting columns 10 are positioned on the same straight line, so that the material hooks 15 and the limiting columns 10 can penetrate through the position close to the packaging bag filled with phthalic anhydride, and the material hooks 15 can be used for cutting the packaging bag. Baffle 20's setting can be effectively to the removal of material hook 15 spacing, is favorable to controlling material hook 15 and spacing post 10 to be located same straight line to promote the material hook 15 and to cut the effect of splitting of wrapping bag, improved and thrown material efficiency.

Baffle 20 is close to one side of throwing feed cylinder 3 for with throw the lateral wall matched with circular-arc of feed cylinder 3, when baffle 20 with throw the lateral wall of feed cylinder 3 offset, can make the lateral wall of baffle 20 better with the lateral wall laminating of throwing feed cylinder 3, not only make material hook 15 more steady at the removal in-process, be favorable to carrying out more accurate spacing to material hook 15 moreover, the design is exquisite, easy and simple to handle.

When feeding, the phthalic anhydride that the feeding barrel 3 nearby floats is pumped to the exhaust pipe 2 because of the negative pressure effect, and then enters the bag-type dust remover, and through the filtering action of the bag-type dust remover and the gravity action of phthalic anhydride, the phthalic anhydride can drop gradually to the dust removal shell 21 of the bag-type dust remover in, and then retrieves the phthalic anhydride. The arrangement of the bag-type dust collector not only reduces the outdoor environment pollution caused by the phthalic anhydride discharged by the fan 1, but also is beneficial to the recovery of the phthalic anhydride and reduces the waste of the phthalic anhydride.

Phthalic anhydride floated near the three charging barrels 3 is pumped to the connected air draft branch pipes 24 along with the air flow due to the negative pressure effect, and then pumped to the first air draft main pipe 25, and is recovered through the filtration of the bag-type dust collector, and the filtered air flow enters the fan 1 through the second air draft main pipe 26, and then is discharged outdoors through the fan 1. The device is not only favorable for recovering phthalic anhydride, but also convenient for the integrated design of production equipment, reduces the workload of workers, saves resources, reduces the production cost and improves the economic benefit.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims (8)

1. The utility model provides a material device is thrown to powder which characterized in that: comprises a fan (1), an exhaust pipe (2) and a feeding component, wherein the feeding component comprises a feeding cylinder (3), a transmission cylinder (4) and a transmission pipe (5) communicated with the bottom end of the transmission cylinder (4), the transmission cylinder (4) is positioned inside the feeding cylinder (3) and is connected with the inner side wall of the feeding cylinder (3), a cover plate (6) is horizontally arranged at the top of the feeding cylinder (3), a rotary cover plate (7) is hinged on the cover plate (6), when the rotary cover plate (7) is horizontal, the rotary cover plate (7) is attached to the side wall of the cover plate (6) and covers the upper end of the feeding cylinder (3), a protective net (8) is horizontally arranged at the upper part of the inner side wall of the feeding cylinder (3), and the protective net (8) is positioned between the transmission cylinder (4) and the rotary cover plate (7), one end of the exhaust pipe (2) penetrates through the cover plate (6) and is communicated with the interior of the charging barrel (3), and the other end of the exhaust pipe (2) is communicated with the fan (1).

2. A powder charging device according to claim 1, characterized in that: the device is characterized in that a blocking net (9) is arranged on the protective net (8), the upper end and the lower end of the blocking net (9) are fixedly connected with the bottom of the cover plate (6) and the protective net (8) respectively, and the two sides of the blocking net (9) are connected with the inner side wall of the charging barrel (3).

3. A powder charging device according to claim 1, characterized in that: the utility model discloses a material feeding device, including protection network (8), protection network (8) are gone up the vertical two spacing posts (10) that are provided with, the top of spacing post (10) is the point form, throw and seted up two spacing holes (11) on the lateral wall of feed cylinder (3), be provided with a plurality of spacing ring (12) and be two gag lever posts (13) that parallel of level form on protection network (8), every gag lever post (13) pass one respectively spacing hole (11) and at least one gag lever post (12), two gag lever post (13) are located be provided with connecting rod (14) between the outer one end of feed cylinder (3), gag lever post (13) are kept away from the vertical material hook (15) that is provided with of one end of connecting rod (14), the top of material hook (15) is the point form.

4. A powder charging device according to claim 3, characterized in that: the limiting column (10) comprises a conical column head (16) and a cylindrical column body (17) fixedly connected with the bottom of the column head (16), the area of the bottom surface of the column head (16) is larger than that of the cross section of the column body (17), the material hook (15) comprises a conical hook head (18) and a cylindrical hook body (19) fixedly connected with the bottom of the hook head (18), and the area of the bottom surface of the hook head (18) is larger than that of the cross section of the hook body (19).

5. A powder charging device according to claim 3, characterized in that: be provided with baffle (20) on gag lever post (13), baffle (20) are located connecting rod (14) with throw between feed cylinder (3), work as when baffle (20) with the lateral wall of throwing feed cylinder (3) offsets, two material hook (15) and two spacing post (10) are located same straight line.

6. A powder charging device according to claim 5, characterized in that: one side of the baffle (20) close to the charging barrel (3) is arc-shaped and matched with the outer side wall of the charging barrel (3).

7. A powder charging device according to claim 1, characterized in that: be provided with the sack cleaner on exhaust column (2), the sack cleaner includes dust removal shell (21), the both ends of dust removal shell (21) respectively with exhaust column (2) intercommunication, the bottom of dust removal shell (21) be provided with recovery pipe (22) of dust removal shell (21) intercommunication, be provided with recovery valve (23) on recovery pipe (22).

8. A powder charging device according to claim 7, characterized in that: exhaust column (2) include convulsions branch pipe (24), first convulsions house steward (25) and second convulsions house steward (26), convulsions branch pipe (24) with throw feed cylinder (3) intercommunication, it is a plurality of convulsions branch pipe (24) with first convulsions house steward (25) intercommunication, first convulsions house steward (25) with set up between second convulsions house steward (26) the sack cleaner, second convulsions house steward (26) are kept away from the one end of sack cleaner with fan (1) is connected.

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