CN219482584U - Chemical safety feeding device - Google Patents

Abstract

The utility model relates to a chemical safety feeding device, which relates to the technical field of chemical feeding and comprises a feeding barrel and a feeding cover, wherein a fixed groove is formed in the feeding barrel, a fixed block is arranged in the fixed groove in a matched sliding manner, a fixed spring is arranged in the fixed groove, one end of the fixed spring is connected with the fixed groove, the other end of the fixed spring is connected with the fixed block, the feeding cover is provided with a guide surface, the guide surface facilitates the feeding cover to be inserted into a feeding hole of a reaction container, the feeding cover is provided with a plurality of discharging holes in a penetrating manner, a discharging valve is arranged in the discharging hole, a connecting component is arranged between the feeding cover and the feeding barrel, and the connecting component is used for connecting the feeding cover and the feeding barrel. The application has the effects of reducing the probability of leakage of materials and reducing safety risks.

Description

Chemical safety feeding device

Technical Field

The utility model relates to the technical field of chemical feeding, in particular to a chemical safety feeding device.

Background

In chemical production, a plurality of materials are often required to be placed in a reaction vessel for chemical reaction, and the process of adding the materials to the reaction vessel is called feeding.

Liquid raw materials with larger consumption are often stored in a storage tank and are fed through a pipeline in a chemical plant, solid raw materials with smaller consumption are often stored in a small storage tank, and the liquid raw materials are poured into a reaction container after a worker opens a material barrel cover during feeding.

In the course of implementing the present application, the inventors found that at least the following problems exist: when the workman is thrown the material, the circumstances that the material was inclined and spilled probably appears, and partial material is harmful to the human body, and under the circumstances that appears the material and leak, the material contacts the human body and causes the security risk of accident higher.

Disclosure of Invention

In order to reduce the probability of material leakage and reduce the safety risk, the application provides a chemical safety feeding device.

The application provides a chemical safety feeding device adopts following technical scheme:

the utility model provides a chemistry safety feeding device, includes to throw the storage bucket and throw the material lid, be provided with the fixed slot in throwing the storage bucket, the adaptation slip is provided with the fixed block in the fixed slot, be provided with fixed spring in the fixed slot, fixed spring one end links to each other with the fixed slot, the fixed spring other end links to each other with the fixed block, it is provided with the guide surface to throw the material lid, the guide surface is convenient to throw in the material lid inserts the feed inlet of reaction vessel, it runs through and is provided with a plurality of discharge gates to throw the material lid, be provided with the bleeder valve in the discharge gate, throw and be provided with coupling assembling between material lid and the storage bucket, coupling assembling is used for connecting to throw the material lid and throw the storage bucket.

By adopting the technical scheme, when feeding is needed, the material barrel is placed into the feeding barrel, then the material barrel is opened, the feeding cover and the feeding barrel are connected by using the connecting component, in the process, the bottom of the feeding cover props against the material barrel and pushes the material barrel, the material barrel pushes the fixing block to slide in the fixing groove, the fixing block compresses the fixing spring, and materials in the material barrel can enter the discharge hole; moving a charging bucket, inserting a charging cover into a feed port of the reaction container, enabling materials to enter a discharge port, opening a discharge valve, enabling the materials to enter the reaction container through the discharge port, and completing charging; in the feeding process, the fixed spring continuously pushes the fixed block, the fixed block pushes the material barrel, the top of the material barrel props against the bottom of the feeding cover, the material barrel and the feeding cover are relatively closed, materials enter the reaction container through the discharge hole, the probability that the materials flow out into the feeding barrel is reduced, and the safety risk that the materials leak to damage a human body is reduced.

Preferably, the connecting assembly comprises a connecting block, the connecting block is arranged on the feeding cover, and the connecting block can be adaptively inserted into a bung hole of the feeding barrel and is in threaded connection with the inner wall of the feeding barrel.

Through adopting above-mentioned technical scheme, when the material lid is thrown with throw the storage bucket to needs to connect, will throw the connecting block adaptation on the material lid and insert the bung hole of throwing the storage bucket, rotate and throw the material lid and make connecting block and throw the inner wall threaded connection of storage bucket, can conveniently be with throwing the material lid and connect on throwing the storage bucket, the connecting block pastes tightly and threaded connection with throwing the inner wall of storage bucket for throw the material lid and throw the storage bucket and seal relatively, further reduce the probability that the material leaked, the security risk of reduction.

Preferably, the connecting assembly further comprises an auxiliary block, and the auxiliary block is arranged on the feeding cover and can be propped against the feeding barrel.

Through adopting above-mentioned technical scheme, after the connecting block is accomplished to throw the material lid with throw the connection of material bucket inner wall threaded connection and is thrown the material bucket, throw the supplementary piece that the material covered and throw the material lid and throw the tight counterbalance of material bucket subsides this moment, further strengthen the material lid and throw the seal of material bucket, reduce the probability that the material leaked, the security risk of reduction.

Preferably, the chemical safety feeding device further comprises a support, the support is connected with the reaction container through bolts, a sliding block is arranged on the support in a sliding mode, a lifting cylinder is arranged on the support, the sliding block is connected with a piston rod of the lifting cylinder, and the feeding barrel is connected with the sliding block in a rotating mode.

Through adopting above-mentioned technical scheme, the support passes through the bolt to be installed on reaction vessel, when the material is thrown to the needs, place the material bucket in throwing the material bucket and uncap, after connecting throwing the material lid and throwing the material bucket, rotate and throw the material bucket and make to throw the material lid towards reaction vessel, and start lift cylinder, lift cylinder's piston rod promotes the slider and is close the reaction vessel until throw the material lid and insert in the reaction vessel feed inlet, like this when throwing the material, lift cylinder continuously promotes the slider, the slider promotes to throw the material lid and offset with the reaction vessel feed inlet, do not need the workman to throw the material bucket of holding up when throwing, simplify the operation, reduce workman's amount of labour, promote the convenience of use, throw the possibility that the material lid accident breaks away from the feed inlet when reducing the material simultaneously, reduce the probability that the material was spilled, further reduce the security risk.

Preferably, the feeding barrel is provided with a rotating rod, the sliding block is provided with a rotating hole, the rotating rod is inserted into the rotating hole in an adapting mode, a locking bolt is arranged between the sliding block and the rotating rod, the sliding block is provided with a first locking hole communicated with the rotating hole, the rotating rod is provided with a second locking hole, the locking bolt can penetrate through the first locking hole in an adapting mode, and the locking bolt can be inserted into the second locking hole in an adapting mode and is in threaded connection with the second locking hole.

Through adopting above-mentioned technical scheme, when the rotation is thrown the storage bucket and is made to throw the material lid towards the feed inlet of reaction vessel, first locking hole on the sliding block aligns with the second locking hole on the dwang this moment, pass the first locking hole on the sliding block with the locking bolt adaptation, in inserting the second locking hole on the dwang again with the locking bolt adaptation, screw up locking bolt and make locking bolt and second locking hole threaded connection, with dwang and sliding block locking fixed like this, make throw the material bucket unable rotation, throw the stability of being connected between material lid and the reaction vessel feed inlet when promoting the material, reduce the possibility that the material lid accident breaks away from the feed inlet, reduce the probability that the material was spilled, further reduce the security risk.

Preferably, a spring balance is arranged on the support, the feeding barrel is provided with a measuring block, the measuring block is provided with a measuring hole in a penetrating mode, and a hook of the spring balance can penetrate through the measuring hole.

Through adopting above-mentioned technical scheme, when the rotation is thrown the storage bucket and is made to throw the material lid towards the feed inlet of reaction vessel, pass the measuring aperture on the measuring piece with the couple of spring balance, reduce the possibility that throws the storage bucket and rock, spring balance measurable total weight, can be according to the registration change of spring balance about throwing the material and draw the how much of throwing the material to roughly know the what of remaining material in the storage bucket.

Preferably, a limiting component is arranged in the feeding barrel and used for limiting a material barrel placed in the feeding barrel, the limiting component comprises a limiting plate and a limiting spring, the feeding barrel is provided with a limiting groove, one end of the limiting spring is arranged in the limiting groove, and the other end of the limiting spring is connected with the limiting plate.

Through adopting above-mentioned technical scheme, when placing the material bucket into throw the material bucket, use the material bucket to promote the limiting plate and make limiting plate compression limit spring, place the fixed block with the material bucket on, in throwing the material in-process, limiting spring promotes limiting plate and material bucket and offsets, and push away animal bucket and throw the material bucket inner wall and offset, thereby carry out spacingly to the material bucket, reduce the possibility that the material bucket moved in throwing the material in-process, thereby reduce throw the probability that the material in-process material leaks to throw in the material bucket, reduce throw the material and accomplish the back workman and take out the probability that the material bucket was contacted when leaking the material, further reduce the security risk.

Preferably, the limiting assembly further comprises a limiting rod, the limiting rod is arranged in the limiting groove in a sliding mode in an adaptive mode, one end of the limiting rod is connected with the limiting spring, and the other end of the limiting rod is connected with the limiting plate.

Through adopting above-mentioned technical scheme, when placing the material bucket into throw the material bucket, use the material bucket to promote the limiting plate, the gag lever post compression spacing spring on the limiting plate, the gag lever post adaptation slides in the spacing groove, promotes the stability that the limiting plate removed, reduces the possibility that the limiting plate was unexpected to incline in the use to reduce throw the probability that the material in-process material leaked to throw in the material bucket, further reduce the workman and take out the security risk when the material bucket.

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

1. through setting up the material throwing barrel, the material throwing cover, the guide surface, the discharge gate, the discharge valve, coupling assembling, the fixed slot, fixed block and fixed spring, when throwing the material, put the material bucket on the fixed block in the material throwing barrel, open the material bucket, then use coupling assembling to connect the material throwing barrel and the material throwing cover, in this process, throw material cover bottom and material bucket and offset, and push the material bucket, the material bucket promotes the fixed block and slides in the fixed slot, the fixed block compresses the fixed spring, when throwing the material, insert the guide surface of throwing the material cover in the feed inlet of reaction vessel, open the discharge valve, the commodity circulation in the material bucket gets into the feed inlet of reaction vessel through the discharge gate, accomplish the material throwing, simultaneously fixed spring promotes the fixed block, the fixed block pushes away the material bucket and closely offsets with throwing material cover bottom, reduce the possibility that the material leaks, thereby reduce the security risk;

2. through setting up connecting block and auxiliary block, when connecting and throwing the storage bucket and throwing the material lid, will throw the connecting block adaptation on the material lid and insert and throw the storage bucket, rotate and throw the material lid and make connecting block and throw the inner wall threaded connection of storage bucket, throw the auxiliary block on the material lid and offset with throwing the storage bucket at this moment, promote and throw the leakproofness between storage bucket and the material lid, reduce the material and leak the possibility of throwing outside the storage bucket, reduce the probability that the human body contacted the material, reduce the security risk;

3. through setting up support, the sliding block, the lift cylinder, the dwang, the rotation hole, locking bolt, first locking hole and second locking hole, before throw the material with the support mounting on reaction vessel, place the material bucket in throwing the material bucket and connect throw the material bucket and throw the material lid after, rotate the material bucket and make throw the material lid towards reaction vessel, use locking bolt adaptation to pass first connecting hole and adaptation and insert in the second connecting hole, screw up locking bolt, start the lift cylinder, the lift cylinder piston rod promotes the sliding block until throw the material lid and insert in the reaction vessel feed inlet, locking bolt is fixed the dwang locking in the rotation hole, reduce throw the possibility that the material bucket rotated in-process, the lift cylinder promotes the sliding block, make throw the material lid to support tight reaction vessel feed inlet, reduce throw the possibility that the material lid accidentally breaks away from the feed inlet in-process, further reduce throw the probability that the material in-process is leaked and is contacted the human body, reduce the safety risk.

Drawings

Fig. 1 is an overall schematic diagram of a chemical safety feeding device provided in an embodiment of the present application.

Fig. 2 is a cross-sectional view of a chemical safety feeding device according to an embodiment of the present application.

Fig. 3 is an enlarged view of area a in fig. 2.

Fig. 4 is an enlarged view of region B in fig. 2.

Reference numerals illustrate: 1. charging barrel; 11. a fixed block; 12. a fixing groove; 13. a fixed spring; 14. a rotating lever; 141. a second locking hole; 15. a measuring block; 151. measuring holes; 16. a limit groove; 2. a feeding cover; 21. a guide surface; 22. a discharge port; 221. a discharge valve; 3. a connection assembly; 31. a connecting block; 32. an auxiliary block; 4. a bracket; 41. a sliding block; 411. a rotation hole; 412. a first locking hole; 42. a lifting cylinder; 43. a spring balance; 5. a locking bolt; 6. a limit component; 61. a limit spring; 62. a limiting plate; 63. and a limit rod.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses a chemical safety feeding device. Referring to fig. 1 to 3, the automatic feeding device comprises a feeding barrel 1 and a feeding cover 2, wherein a fixing groove 12 is formed in the bottom of the inner wall of the feeding barrel 1 along the height direction, a fixing block 11 is arranged in the fixing groove 12 in a sliding manner in an adaptive manner, a fixing spring 13 is arranged in the fixing groove 12 along the height direction, one end of the fixing spring 13 is fixedly connected with the bottom of the fixing groove 12, and the other end of the fixing spring 13 is fixedly connected with the fixing block 11. The outer wall of the feeding cover 2 is provided with a guide surface 21 which facilitates the feeding cover 2 to be inserted into a feeding hole of a reaction vessel, the surface of the feeding cover 2 is provided with a plurality of discharge holes 22 in a penetrating manner along the height direction, and a discharge valve 221 is arranged in the discharge holes 22. A connecting component 3 is arranged between the feeding cover 2 and the feeding barrel 1 and is used for connecting the feeding cover 2 and the feeding barrel 1. When the material is required to be fed, the material barrel is placed on the inner fixed block 11 of the material feeding barrel 1, the material barrel is opened, the material feeding barrel 1 and the material feeding cover 2 are connected by using the connecting component 3, the bottom of the material feeding barrel 1 is abutted against the top of the material barrel in the connecting process, the material barrel pushes the fixed block 11, and the fixed block 11 compresses the fixed spring 13. When the material feeding cover 2 and the material feeding barrel 1 are connected, the guide surface 21 of the material feeding cover 2 is inserted into the feeding hole of the reaction container, the discharging valve 221 is opened, materials enter the reaction container through the discharging hole 22, the material feeding cover 2 faces the reaction container at the moment, the fixing spring 13 pushes the fixing block 11, the fixing block 11 pushes the material barrel to enable the top of the material barrel to be abutted against the bottom of the material feeding cover 2, the material barrel and the material feeding cover 2 are relatively airtight, the possibility of leakage of the materials is reduced, and the safety risk is reduced.

In order to further reduce the possibility of material leakage, referring to fig. 3, the connecting assembly 3 includes annular connecting block 31 and auxiliary block 32, connecting block 31 is welded and is set up in throwing material lid 2 diapire along the direction of height, connecting block 31 outer wall flushes with throwing material lid 2 bottom outer wall, auxiliary block 32 welding is set up in throwing material lid 2 outer wall, auxiliary block 32 diapire flushes with throwing material lid 2 bottom and can offset with throwing material bucket 1 top. When the feeding cover 2 is connected with the feeding barrel 1, the connecting block 31 is adaptively inserted into the opening of the feeding barrel 1, the feeding cover 2 is rotated to enable the connecting block 31 to be in threaded connection with the inner wall of the feeding barrel 1, at the moment, the auxiliary block 32 on the feeding cover 2 is abutted to the top of the feeding barrel 1, the tightness of connection between the feeding cover 2 and the feeding barrel 1 is improved, the possibility that materials leak out of the feeding barrel 1 is reduced, and the safety risk is further reduced.

In order to improve the convenience of feeding, referring to fig. 2 and 4, the chemical safety feeding device further comprises a bracket 4 fixed on the reaction vessel through bolts, a sliding block 41 is slidably arranged on a vertical rod of the bracket 4 along the height direction, a lifting air cylinder 42 is fixedly arranged on the top of the bracket 4 along the height direction, and a piston rod of the lifting air cylinder 42 is fixedly connected with the sliding block 41. The feeding barrel 1 is fixedly provided with a rotating rod 14 in a welded mode, the side face of the sliding block 41 is provided with a rotating hole 411, the rotating rod 14 is inserted into the rotating hole 411 in an adaptive mode, and the feeding barrel 1 is arranged between the sliding blocks 41 in a rotating mode. Before use, the support 4 is fixed on the reaction vessel by using the bolt, during feeding, the material barrel is put into the feeding barrel 1, then the material barrel is opened, after the feeding barrel 1 and the feeding cover 2 are connected, the feeding barrel 1 is rotated to enable the feeding cover 2 to face the reaction vessel, the lifting cylinder 42 is started, the piston rod of the lifting cylinder 42 pushes the sliding block 41 to slide, so that the feeding barrel 1 is driven to approach the reaction vessel until the feeding cover 2 is inserted into the feed inlet of the reaction vessel, the lifting cylinder 42 continuously pushes the sliding block 41, and the sliding block 41 pushes the feeding barrel 1 to enable the feeding cover 2 to abut against the feed inlet of the reaction vessel. During feeding, a worker does not need to hold the feeding barrel 1, and the feeding convenience is improved.

In order to improve the stability of the material feeding, referring to fig. 2 and 4, the top surface of the sliding block 41 is provided with a first locking hole 412 communicating with the rotation hole 411 in the height direction, the surface of the rotation rod 14 is provided with a second locking hole 141 in the height direction, a locking bolt 5 is provided between the sliding block 41 and the rotation rod 14, the locking bolt 5 may be adapted to pass through the first locking hole 412, and the locking bolt 5 may be adapted to be inserted into the second locking hole 141 and be screwed with the second locking hole 141. The top of the bracket 4 is provided with a spring balance 43 through a bolt, the center of the bottom of the feeding barrel 1 is fixedly provided with a measuring block 15 in a welded mode along the height direction, the measuring block 15 is provided with a measuring hole 151 in a penetrating mode along the width direction, and a hook of the spring balance 43 can penetrate through the measuring hole 151. When the charging bucket 1 is rotated during charging so that the charging cover 2 faces the reaction container, the locking bolt 5 is used for being inserted into the second locking hole 141 of the rotating rod 14 after passing through the first locking hole 412 of the sliding block 41 in an adapting manner, the locking bolt 5 is screwed down so that the charging bucket 1 is not rotated any more, and the spring balance 43 is hooked through the measuring hole 151 on the measuring block 15. The stability of throwing the material is promoted, the possibility that the material throwing cover 2 breaks away from the feed inlet due to accidental rotation of the material throwing barrel 1 during material throwing is reduced, the probability of material leakage is reduced, the safety risk is reduced, the amount of the material throwing amount can be approximately obtained by referring to the change of the indication of the spring balance 43 between two times of material throwing, and the amount of the residual material in the material throwing barrel is known.

In order to improve the stability of the fixing of the material barrel, referring to fig. 4, a limiting assembly 6 is arranged in the material feeding barrel 1, the limiting assembly 6 is used for limiting the material barrel, and the limiting assembly 6 comprises a limiting rod 63, a limiting plate 62 and a limiting spring 61. The inside wall of the charging bucket 1 is provided with a limit groove 16 along the width direction, a limit rod 63 is arranged in the limit groove 16 in a matching sliding manner, a limit spring 61 is arranged in the limit groove 16, one end of the limit spring 61 is fixedly connected with one side, far away from the inner wall of the charging bucket 1, of the limit groove 16, the other end of the limit spring 61 is fixedly connected with one end, close to the outer wall of the charging bucket 1, of the limit rod 63, and a limit plate 62 is fixedly connected with one end, far away from the outer wall of the charging bucket 1, of the limit rod 63 in a welding manner. When placing the material bucket into throw material bucket 1, promote limiting plate 62 with the material bucket, limiting plate 62 promotes gag lever post 63, gag lever post 63 compression limit spring 61, put into the material bucket and throw material bucket 1 back limit spring 61 and resume promotion gag lever post 63, gag lever post 63 promotes limiting plate 62, limiting plate 62 supports tight material bucket outer wall, and push the material bucket makes material bucket keep away from limiting plate 62 one side outer wall support tight throw material bucket 1 inner wall, carry out spacingly to the material bucket, promote the material bucket at throw the stability of material bucket 1 internal fixation, material bucket rocks when reducing to throw the material and leads to the possibility that the material leaks to throw in the material bucket 1, reduce the workman and contact the security risk who leaks the material when taking out the material bucket.

The implementation principle of the chemical safety feeding device in the embodiment of the application is as follows: when feeding, the material barrel is placed on the inner fixed block 11 of the feeding barrel 1, the material barrel is opened, the connecting block 31 on the feeding cover 2 is adaptively inserted into the barrel opening of the feeding barrel 1, the feeding cover 2 is rotated to enable the connecting block 31 to be in threaded connection with the inner wall of the feeding barrel 1, and the auxiliary block 32 is abutted against the top of the feeding barrel 1, so that the feeding cover 2 and the feeding barrel 1 are sealed. In the connecting process, the bottom of the feeding cover 2 abuts against the pushing animal charging barrel, and the material charging barrel pushes the fixing block 11 to compress the fixing spring 13. The material throwing barrel 1 is rotated to enable the material throwing cover 2 to face the reaction container, at the moment, the fixed spring 13 is restored to push the fixed block 11, the fixed block 11 pushes the material barrel to enable the top of the material barrel to be abutted against the bottom of the material throwing cover 2, and the material throwing cover 2 and the material barrel are closed. The locking bolt 5 is adapted to pass through the first connecting hole and is adapted to be inserted into the second connecting hole, so that the charging basket 1 is not rotated any more. The lifting air cylinder 42 is started, the piston rod of the lifting air cylinder 42 pushes the sliding block 41, the sliding block 41 slides on the support 4 to enable the material barrel to be close to the reaction container until the guide surface 21 on the feeding cover 2 is inserted into the feeding hole of the reaction container, the discharging valve 221 is opened, and the material enters the reaction container through the discharging hole 22 to finish feeding. In the feeding process, the lifting air cylinder 42 continuously pushes the sliding block 41, the sliding block 41 pushes the feeding barrel 1 to enable the feeding cover 2 to abut against the feeding opening of the reaction container, meanwhile, the material barrel and the feeding cover 2 abut against each other, and the feeding cover 2 and the feeding barrel 1 are connected in a sealing manner, so that the leakage probability of materials is reduced, and the safety risk is reduced.

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 (8)

1. A chemical safety feeding device, which is characterized in that: including throwing storage bucket (1) and throwing material lid (2), be provided with fixed slot (12) in throwing material bucket (1), the adaptation is provided with fixed block (11) in fixed slot (12) slip, be provided with fixed spring (13) in fixed slot (12), fixed spring (13) one end links to each other with fixed slot (12), the fixed spring (13) other end links to each other with fixed block (11), throw material lid (2) and be provided with guide surface (21), guide surface (21) are convenient throw material lid (2) and insert in the feed inlet of reaction vessel, throw material lid (2) and run through and be provided with a plurality of discharge gates (22), be provided with discharge valve (221) in discharge gate (22), throw and be provided with coupling assembling (3) between material lid (2) and throwing material bucket (1), coupling assembling (3) are used for connecting throw material lid (2) and throw material bucket (1).

2. A chemical safety feeding device according to claim 1, wherein: the connecting assembly (3) comprises a connecting block (31), the connecting block (31) is arranged on the feeding cover (2), and the connecting block (31) can be inserted into a bung hole of the feeding barrel (1) in an adaptive manner and is in threaded connection with the inner wall of the feeding barrel (1).

3. A chemical safety feeding device according to claim 2, wherein: the connecting assembly (3) further comprises an auxiliary block (32), and the auxiliary block (32) is arranged on the feeding cover (2) and can be abutted against the feeding barrel (1).

4. A chemical safety feeding device according to claim 1, wherein: still include support (4), support (4) accessible bolt links to each other with the reaction vessel, the slip is provided with slider (41) on support (4), support (4) are provided with lift cylinder (42), slider (41) link to each other with the piston rod of lift cylinder (42), throw bucket (1) and slider (41) rotate and link to each other.

5. A chemical safety dispensing device as defined in claim 4, wherein: the feeding barrel (1) is provided with a rotating rod (14), the sliding block (41) is provided with a rotating hole (411), the rotating rod (14) is inserted into the rotating hole (411) in an adapting mode, a locking bolt (5) is arranged between the sliding block (41) and the rotating rod (14), the sliding block (41) is provided with a first locking hole (412) communicated with the rotating hole (411), the rotating rod (14) is provided with a second locking hole (141), the locking bolt (5) can penetrate through the first locking hole (412) in an adapting mode, and the locking bolt (5) can be inserted into the second locking hole (141) in an adapting mode and is in threaded connection with the second locking hole (141).

6. A chemical safety dispensing device as defined in claim 4, wherein: be provided with spring balance (43) on support (4), throw material bucket (1) and be provided with measuring piece (15), measuring piece (15) run through and be provided with measuring hole (151), the couple of spring balance (43) can pass measuring hole (151).

7. A chemical safety feeding device according to claim 1, wherein: the feeding barrel is characterized in that a limiting assembly (6) is arranged in the feeding barrel (1), the limiting assembly (6) is used for limiting a material barrel placed in the feeding barrel (1), the limiting assembly (6) comprises a limiting plate (62) and a limiting spring (61), the feeding barrel (1) is provided with a limiting groove (16), one end of the limiting spring (61) is arranged in the limiting groove (16), and the other end of the limiting spring (61) is connected with the limiting plate (62).

8. A chemical safety feeding apparatus according to claim 7, wherein: the limiting assembly (6) further comprises a limiting rod (63), the limiting rod (63) is arranged in the limiting groove (16) in a sliding fit mode, one end of the limiting rod (63) is connected with the limiting spring (61), and the other end of the limiting rod (63) is connected with the limiting plate (62).