CN212523372U

CN212523372U - Filling powder circulating system

Info

Publication number: CN212523372U
Application number: CN202022002835.4U
Authority: CN
Inventors: 时百超; 孙保定
Original assignee: Henan Lvbo Energy Equipment Co ltd
Current assignee: Henan Lvbo Energy Equipment Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-02-12
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses a filling powder circulating system, which comprises a powder feeding mechanism, a rough filling mechanism, a vacuum recovery mechanism and a fine filling mechanism; the powder feeding mechanism comprises a powder feeding pipe, a recycling feeding pipe, a coarse infusion material pipe and a fine infusion material pipe, and the powder feeding pipe is communicated with the coarse infusion head through the coarse infusion material pipe; the powder inlet pipe is communicated with the buffer bin through a fine infusion material pipe; the powder inlet pipe is communicated with the recovery bin through the recovery feeding pipe. The vacuum recovery mechanism recovers powder overflowing from the rough irrigation mechanism and conveys the powder to the fine irrigation mechanism and the rough irrigation mechanism through the powder inlet pipe, waste of the powder is reduced, and the working environment is clean. The powder that the inlet pipe was carried is received with the inlet pipe intercommunication to a plurality of buffer bins, and the buffer bins after the buffering stirs in stirring the feed bin and mixes, and the even that the powder distributes in the stirring feed bin can be guaranteed to many-to-one mode, stirs after mixing and again through each conveying pipeline transport for the smart head of irritating to carry out smart and irritate, has improved the finished product qualification rate of smart irritating.

Description

Filling powder circulating system

Technical Field

The utility model belongs to the technical field of the fire extinguisher filling, concretely relates to filling powder circulation system.

Background

The fire extinguisher tank body carries out the filling and need pass through twice filling, carry out crude filling earlier, carry out meticulous filling again behind the crude filling, during the crude filling, the material gets into from the inlet pipe, carry the filling head through the conveying pipeline, it is internal that the filling head fills the jar with the material, the filling in-process material spills over from the jar internal very easily, the material that spills over does not have recovery plant, directly float in the environment, lead to operational environment abominable on the one hand, cause harm to staff's health, on the other hand still causes a large amount of wastes of material, production cost has been increased intangibly.

And the independent feed bin that meticulous filling material feeding unit that uses during meticulous filling adopted directly follows the material conveying pipe intercommunication, receives the powder of conveying pipe, and single feed bin receives the powder and carries and give the filling head, leads to powder uneven distribution in the feed bin very easily, and then makes the powder that the filling head divides to be unbalanced, leads to the jar body filling degree of the smart jar of filling of same batch uneven, has the condition of not having the filling even to take place, leads to the product percent of pass to reduce.

SUMMERY OF THE UTILITY MODEL

Not enough to the description among the above-mentioned prior art, the utility model provides a filling powder circulation system recycles the powder that spills over with thick irritating to the structure that changes the smart feed bin of irritating improves the filling qualification rate.

The utility model discloses the technical scheme who adopts does:

a filling powder circulating system comprises a powder feeding mechanism, a rough filling mechanism, a vacuum recovery mechanism and a fine filling mechanism; the powder feeding mechanism comprises a powder feeding pipe, a recycling feeding pipe, a coarse infusion material pipe and a fine infusion material pipe, and the powder feeding pipe is communicated with a coarse filling head of the coarse filling mechanism through the coarse infusion material pipe; the powder inlet pipe is communicated with a buffer bin of the fine irrigation mechanism through a fine infusion material pipe; the powder inlet pipe is communicated with a recovery bin of the vacuum recovery mechanism through a recovery feeding pipe. The vacuum recovery mechanism recovers powder overflowing from the rough irrigation mechanism and conveys the powder to the fine irrigation mechanism and the rough irrigation mechanism through the powder inlet pipe for recycling, waste of the powder is reduced, and the cleanness of a working environment is guaranteed.

As a preferred scheme of the utility model, the rough filling mechanism comprises a rough filling head, a recycling powder pumping plate, a filling pipe and a sealing plug; the rough filling head is arranged on the recovery powder extracting plate, and the sealing plug is arranged at the lower part of the recovery powder extracting plate; the feeding end of the rough filling head is communicated with a rough filling material pipe; the powder injection pipe penetrates through the sealing plug and the recovery powder pumping plate upwards and then is communicated with the discharge end of the rough filling head, a powder pumping cavity is arranged between the powder injection pipe and the recovery powder pumping plate, a powder pumping hole is formed in the recovery powder pumping plate, the powder pumping hole is communicated with the powder pumping cavity, and the powder pumping hole is communicated with a powder recovery pipe of the vacuum recovery mechanism.

As a preferred scheme of the utility model, the coarse filling head is provided with an air outlet, and an air outlet component is arranged at the air outlet; the exhaust assembly comprises an exhaust air cylinder and a blocking block, the exhaust air cylinder is installed on the coarse filling head, a piston rod of the exhaust air cylinder is connected with the blocking block, the blocking block corresponds to the exhaust port, the exhaust port is blocked and released under the action of the exhaust air cylinder, and after filling is completed, the vacuum state of the filling head is relieved through the exhaust port.

As a preferred scheme of the utility model, the vacuum recovery mechanism comprises a recovery powder pipe, a vacuum filter box, a vacuum pump, at least two recovery bins and a vacuum valve; the powder recovery pipe is communicated with the vacuum filter box, the vacuum filter box is communicated with the recovery bin, and the vacuum filter box is communicated with the vacuum pump through a vacuum valve.

As a preferred scheme of the utility model, the vacuum filter box comprises a primary vacuum filter mechanism and a secondary vacuum filter mechanism, the primary vacuum filter mechanism and the secondary vacuum filter mechanism are communicated through a communicating pipe, the primary vacuum filter mechanism is provided with a gas material inlet, and the gas material inlet is communicated with a powder recovery pipe; the second-stage vacuum filtering mechanism is provided with an air outlet which is communicated with the vacuum valve.

As a preferred scheme of the utility model, the primary vacuum filtering mechanism comprises a primary filtering bin, a primary filter element mounting plate, a primary sealing plate and a primary separation bin; the primary filter element is arranged on the primary filter element mounting plate, the primary filter element mounting plate is arranged in the primary filter bin, the primary filter element mounting plate and the inner wall of the primary filter bin form a primary filter cavity, the primary filter cavity is communicated with the primary distributing bin, and the primary distributing bin is communicated with a recovery bin; the primary filtering bin is provided with a gas material inlet which is communicated with the primary filtering cavity; the primary sealing plate is arranged in the primary filtering bin, and the primary filter element mounting plate, the primary sealing plate and the inner wall of the primary filtering bin form a primary air filtering cavity; the primary air filter chamber is communicated with the air inlet of the communicating pipe.

As a preferred scheme of the utility model, in order to realize the switching between the vacuum state and the non-vacuum state, the primary sealing plate is provided with an air release port, and the air release port is provided with an exhaust component; the exhaust assembly comprises an exhaust cylinder and a blocking block, the exhaust cylinder is installed on the first-stage sealing plate, a piston rod of the exhaust cylinder is connected with the blocking block, and the blocking block corresponds to the air release port in the first-stage sealing plate.

As a preferred scheme of the utility model, the second-stage vacuum filtering mechanism comprises a second-stage filtering bin, a second-stage filter element mounting plate, a second-stage sealing plate and a second-stage separating bin; the secondary filter element is arranged on the secondary filter element mounting plate, the secondary filter element mounting plate is arranged in the secondary filter bin, the secondary filter element mounting plate and the inner wall of the secondary filter bin form a secondary filter cavity, the secondary filter cavity is communicated with the secondary material distribution bin, and the secondary material distribution bin is communicated with a recovery bin; the secondary filter chamber is communicated with the air outlet of the communicating pipe; the secondary filter element mounting plate, the secondary sealing plate and the inner wall of the secondary filter bin form a secondary air filter cavity; the secondary air filtering cavity is provided with an air outlet.

In order to realize the switching between the vacuum state and the non-vacuum state, the secondary sealing plates are provided with air release ports, and the air release ports are provided with exhaust assemblies; the exhaust assembly comprises an exhaust cylinder and a blocking block, the exhaust cylinder is installed on the secondary sealing plate, a piston rod of the exhaust cylinder is connected with the blocking block, and the blocking block corresponds to the air release port in the secondary sealing plate.

As a preferred scheme of the utility model, the fine irrigation mechanism comprises a buffer bin member and a stirring bin member, wherein the buffer bin member comprises at least two buffer bins, and a feed inlet of each buffer bin is communicated with a fine irrigation material pipe; the discharge hole of each buffer bin is communicated with the stirring bin of the stirring bin component. The feeding pipe supplies materials to at least two buffer bins, and the buffer bins are mixed in the stirring bins after buffering, so that the materials in the stirring bins are uniformly distributed, the condition that a certain part is more and a certain part is less is avoided, and each fine irrigation head can obtain powder.

As the utility model discloses an optimal scheme, in order to ensure the sufficiency of the interior material of each buffering feed bin, all be equipped with material level sensor and unloading level sensor at every buffering feed bin. The material level sensors detect the material level information in the buffer bins respectively, and when the materials are short or the materials are enough, the materials can be supplemented or the powder receiving can be stopped in time.

As the utility model discloses an optimal scheme, in the buffer bin can fall fast for the convenience of powder, the inner wall of buffer bin sets to the slope structure, and the powder slides to buffer bin bottom along the slope structure.

As a preferred scheme of the utility model, the stirring bin component comprises a stirring bin, a material conveying pipe, a stirring motor, a stirring shaft and stirring blades, wherein the stirring bin is positioned below each buffer bin, and a feed inlet of the stirring bin is communicated with a discharge outlet of each buffer bin; the discharge ports of the stirring bin are respectively communicated with a material conveying pipe; the material conveying pipe conveys powder to the fine filling head; the stirring motor is installed outside the stirring bin, the output shaft of the stirring motor is connected with the stirring shaft through the coupler, the stirring shaft is arranged at the bottom of the stirring bin and rotates in the stirring bin, and the stirring blade is installed on the stirring shaft. The stirring motor drives the stirring shaft to rotate, and the stirring blades stir and fully mix the powder.

As the utility model discloses an optimal scheme is equipped with level sensor in stirring feed bin in order to ensure the sufficiency of stirring feed bin material, can carry out timely feed supplement according to level sensor.

The utility model discloses carry out the one-level filtration in the powder suction one-level filter chamber that will overflow under the effect of vacuum pump during filling subassembly filling, the one-level filterable powder directly falls into one grade for use in the feed bin, one grade feed bin and one retrieve the feed bin intercommunication, retrieve feed bin and inlet pipe intercommunication, still contain a small amount of powder in the air after the one-level filtration, enter into the second grade filter intracavity through the air inlet of communicating pipe from one-level air filter chamber, carry out secondary filter through the second grade filter core in the second grade filter intracavity, the powder that filters out falls into two grades of feed bins, two grades of feed bins and one retrieve the feed bin intercommunication, retrieve feed bin and inlet pipe intercommunication, the air after the second grade filtration has been cleaner, discharge vacuum pump department from the gas outlet of second grade. In order to realize the vacuum state, the first-stage air filter chamber and the second-stage air filter chamber are provided with air vents, whether the air vents are blocked is controlled by an exhaust air cylinder, when the vacuum filtration is carried out, the exhaust air cylinder blocks the air vents by a blocking block, after the filtration is finished, the exhaust air cylinder enables the blocking block to leave the air vents to relieve the vacuum state, the recycling of materials is realized, the working environment is clean, the consumption of the materials is reduced, the production cost is invisibly reduced, at least two parallel buffer bins are arranged during the fine irrigation, a plurality of buffer bins are directly communicated with the feeding pipe to receive the powder conveyed by the feeding pipe, the buffer bins are stirred and mixed in the stirring bins after being buffered, the powder distribution in the stirring bins can be ensured in a multi-to-one mode, the fine irrigation is carried out to the fine irrigation head by the conveying pipes after the stirring and mixing bins are provided with material level sensors, the filling can be timely carried out, the filling powder is ensured to be sufficient, the filling efficiency is improved, each fine filling head can obtain the same powder due to the uniform distribution of the powder, and the qualification rate of finished products of fine filling is improved.

Drawings

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

Fig. 1 is a schematic structural view of the present invention without a coarse irrigation mechanism.

Fig. 2 is the assembly drawing of the feeding mechanism, the coarse irrigation mechanism and the vacuum recovery mechanism of the utility model.

Fig. 3 is the schematic structural diagram of the feeding mechanism, the rough irrigation mechanism and the vacuum recovery mechanism of the present invention.

Fig. 4 is a schematic structural view of the coarse irrigation mechanism of the present invention.

Fig. 5 is a schematic structural view of the powder collecting plate of the present invention.

Fig. 6 is a schematic structural view of the vacuum filtration tank of the present invention.

Fig. 7 is the assembly schematic diagram of the precise irrigation mechanism and the feeding mechanism of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

Example (b):

a filling powder circulating system comprises a powder feeding mechanism, a rough filling mechanism, a vacuum recovery mechanism and a fine filling mechanism.

The powder feeding mechanism, as shown in fig. 1, 2, 3 and 7, comprises a powder feeding pipe 1, a recycling feeding pipe 2, a coarse infusion material pipe 3 and a fine infusion material pipe 19, wherein the powder feeding pipe 1 is communicated with a coarse filling head of the coarse filling mechanism through the coarse infusion material pipe 3; the powder inlet pipe 1 is communicated with a buffer bin of the fine irrigation mechanism through a fine infusion material pipe 19; the powder inlet pipe 1 is communicated with a recovery bin 10 of the vacuum recovery mechanism through a recovery feeding pipe 2. The vacuum recovery mechanism recovers powder overflowing from the rough irrigation mechanism and conveys the powder to the fine irrigation mechanism and the rough irrigation mechanism through the powder inlet pipe for recycling, waste of the powder is reduced, and the cleanness of a working environment is guaranteed.

Specifically, the rough filling mechanism, as shown in fig. 2-5, includes a rough filling head 4, a recycling powder-pumping plate 5, a material-injecting pipe 6 and a sealing plug 7; the rough filling head 4 is arranged on the recovery powder extracting plate 5, and the sealing plug 7 is arranged at the lower part of the recovery powder extracting plate 5; the feeding end of the rough filling head 4 is communicated with a rough filling material pipe 3; the powder injection pipe 6 upwards penetrates through the sealing plug 7 and the recovery powder pumping plate 5 and then is communicated with the discharge end of the rough filling head 4, a powder pumping cavity is arranged between the powder injection pipe 6 and the recovery powder pumping plate 5, the recovery powder pumping plate 5 is provided with a powder pumping hole 51, the powder pumping hole 51 is communicated with the powder pumping cavity, and the powder pumping hole 51 is communicated with a powder recovery pipe 8 of the vacuum recovery mechanism.

The rough filling head 4 is provided with an air outlet 41, and an air outlet component is arranged at the air outlet; the exhaust assembly comprises an exhaust cylinder 16 and a blocking block 17, the exhaust cylinder 16 is installed on the rough filling head 4, a piston rod of the exhaust cylinder 16 is connected with the blocking block 17, the blocking block 17 corresponds to the exhaust port 41, the blocking and releasing of the exhaust port are achieved under the action of the exhaust cylinder, and after filling is completed, the vacuum state of the filling head is relieved through the exhaust port.

The vacuum recovery mechanism comprises a recovery powder pipe 8, a vacuum filter box 9, a vacuum pump, at least two recovery bins 10 and a vacuum valve 111; the recovery powder pipe 8 is communicated with the vacuum filter box 9, the vacuum filter box 9 is communicated with the recovery bin 10, and the vacuum filter box 9 is communicated with the vacuum pump through a vacuum valve 111.

The vacuum filter box 9 comprises a primary vacuum filter mechanism and a secondary vacuum filter mechanism, the primary vacuum filter mechanism is communicated with the secondary vacuum filter mechanism through a communicating pipe, the primary vacuum filter mechanism is provided with a gas material inlet, and the gas material inlet is communicated with the powder recovery pipe 8; the second-stage vacuum filtering mechanism is provided with an air outlet which is communicated with the vacuum valve 111.

The primary vacuum filtering mechanism, as shown in fig. 1-3 and fig. 6, includes a primary filtering bin 900, a primary filter element 901, a primary filter element mounting plate 902, a primary sealing plate 903 and a primary distributing bin 904; the primary filter element 901 is arranged on the primary filter element mounting plate 902, the primary filter element mounting plate 902 is arranged in the primary filter bin 900, the primary filter element mounting plate 902 and the inner wall of the primary filter bin 900 form a primary filter cavity, the primary filter cavity is communicated with a primary separation bin 904, and the primary separation bin 904 is communicated with a recovery bin 10; the primary filtering bin 900 is provided with a gas material inlet which is communicated with the primary filtering cavity; the primary sealing plate 903 is arranged in the primary filtering bin 900, and the primary filter element mounting plate 902, the primary sealing plate 903 and the inner wall of the primary filtering bin 900 form a primary air filtering cavity 905; the primary air filter chamber 905 is communicated with an air inlet of the communicating pipe.

In order to realize the switching between vacuum and non-vacuum states, a gas release port is arranged on the primary sealing plate 903, and an exhaust assembly is arranged at the gas release port; the exhaust assembly comprises an exhaust cylinder 16 and a blocking block 17, wherein the exhaust cylinder 16 is installed on a primary sealing plate 903, a piston rod of the exhaust cylinder 16 is connected with the blocking block 17, and the blocking block 17 corresponds to an air release port on the primary sealing plate 903.

As shown in fig. 1-3 and fig. 6, the two-stage vacuum filtration mechanism includes a two-stage filtration bin 906, a two-stage filter element 907, a two-stage filter element mounting plate 908, a two-stage sealing plate 909, and a two-stage material distribution bin 910; the secondary filter element 907 is arranged on the secondary filter element mounting plate 908, the secondary filter element mounting plate 908 is arranged in the secondary filter bin 906, the secondary filter element mounting plate 908 and the inner wall of the secondary filter bin 906 form a secondary filter cavity, the secondary filter cavity is communicated with a secondary separation bin 910, and the secondary separation bin 910 is communicated with a recovery bin 10; the secondary filter chamber is communicated with the air outlet of the communicating pipe; the secondary sealing plate 909 is installed in the secondary filter bin 906, and the secondary filter element installation plate 908, the secondary sealing plate 909 and the inner wall of the secondary filter bin 906 form a secondary air filter cavity 911; the secondary air filter cavity 911 is provided with an air outlet.

In order to realize the switching between vacuum and non-vacuum states, the secondary sealing plates 909 are provided with air vents, and the air vents are provided with exhaust assemblies; the exhaust assembly comprises an exhaust cylinder 16 and a block 17, wherein the exhaust cylinder 16 is installed on a secondary sealing plate 909, a piston rod of the exhaust cylinder 16 is connected with the block 17, and the block 17 corresponds to an air release port on the secondary sealing plate 909.

As shown in fig. 1 and 7, the fine-filling mechanism comprises a buffer bin member and a stirring bin member, the buffer bin member comprises at least two buffer bins 18, and the feed inlet of each buffer bin 18 is communicated with a fine-infusion pipe 19; the discharge port of each buffer bin 18 is in communication with the mixing bin of the mixing bin member. The feeding pipe supplies materials to at least two buffer bins, and the buffer bins are mixed in the stirring bins after buffering, so that the materials in the stirring bins are uniformly distributed, the condition that a certain part is more and a certain part is less is avoided, and each fine irrigation head can obtain powder.

In order to ensure the sufficiency of the materials in each buffer bin, each buffer bin is provided with a feeding level sensor and a discharging level sensor. The material level sensors detect the material level information in the buffer bins respectively, and when the materials are short or the materials are enough, the materials can be supplemented or the powder receiving can be stopped in time.

In order to facilitate the powder to fall into the buffer bin quickly, the inner wall of the buffer bin is arranged to be an inclined structure, and the powder slides to the bottom of the buffer bin along the inclined structure.

The stirring bin components comprise stirring bins 11, conveying pipes 12, stirring motors 13, stirring shafts 14 and stirring blades 15, wherein the stirring bins 11 are positioned below the buffer bins 18, and the feed inlets of the stirring bins 11 are communicated with the discharge outlets of the buffer bins 18; the discharge ports of the stirring bin 11 are respectively communicated with a material conveying pipe 12; the material conveying pipe 12 conveys powder to the fine filling head; stirring motor 13 installs outside stirring feed bin 11 and stirring motor 13's output shaft passes through the shaft coupling and is connected with (mixing) shaft 14, and (mixing) shaft 14 sets up in stirring feed bin 11 bottom and at 11 rotations of stirring feed bin, and stirring leaf 15 installs on (mixing) shaft 14. The stirring motor drives the stirring shaft to rotate, and the stirring blades stir and fully mix the powder.

In order to ensure the sufficiency of the materials in the stirring bin, a material level sensor is arranged in the stirring bin, and timely material supplement can be carried out according to the material level sensor.

When the filling component is used for filling, overflowed powder is pumped into a primary filtering cavity under the action of a vacuum pump to be subjected to primary filtering, the primary filtered powder directly falls into a primary filtering cavity for standby, the primary filtering cavity is communicated with a recovery cavity, the recovery cavity is communicated with a feeding pipe, the powder in the recovery cavity is directly used for a coarse filling process, a small amount of powder is contained in air after primary filtering, the air enters a secondary filtering cavity from the primary air filtering cavity through an air inlet of a communicating pipe, secondary filtering is carried out in the secondary filtering cavity through a secondary filter element, the filtered powder falls into a secondary filtering cavity, the secondary filtering cavity is communicated with a recovery cavity, the recovery cavity is communicated with the feeding pipe, the powder in the recovery cavity is used for a fine filling process, the air after secondary filtering is relatively clean, the air is discharged to the vacuum pump from an air outlet of the secondary air filtering cavity, and the, make operational environment clean, the consume volume of material has been reduced again, production cost has been reduced in the intangible, and set up two at least buffer bins that parallel when smart irritating, the powder that the inlet pipe was carried is received with the inlet pipe intercommunication directly to a plurality of buffer bins, the stirring is mixed in the stirring feed bin after the buffer bin buffering, the even of powder distribution in the stirring feed bin can be guaranteed to many-to-one mode, carry through each conveying pipeline again after the stirring mixes and carry out smart irritating for the head of smart irritating, and all be equipped with level sensor at buffer bin and stirring feed bin, can in time carry out the feed supplement, guarantee the sufficient of filling powder.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a filling powder circulation system which characterized in that: comprises a powder feeding mechanism, a coarse irrigation mechanism, a vacuum recovery mechanism and a fine irrigation mechanism; the powder feeding mechanism comprises a powder feeding pipe (1), a recycling feeding pipe (2), a coarse infusion material pipe (3) and a fine infusion material pipe (19), and the powder feeding pipe (1) is communicated with a coarse filling head of the coarse filling mechanism through the coarse infusion material pipe (3); the powder inlet pipe (1) is communicated with a buffer bin of the fine irrigation mechanism through a fine infusion material pipe (19); the powder inlet pipe (1) is communicated with a recovery bin (10) of the vacuum recovery mechanism through a recovery feeding pipe (2).

2. The filling powder circulation system of claim 1, wherein: the rough filling mechanism comprises a rough filling head (4), a recovery powder pumping plate (5), a material injection pipe (6) and a sealing plug (7); the rough filling head (4) is arranged on the recovery powder extraction plate (5), and the sealing plug (7) is arranged at the lower part of the recovery powder extraction plate (5); the feeding end of the rough filling head (4) is communicated with the rough infusion material pipe (3); the powder filling pipe (6) penetrates through the sealing plug (7) and the recovery powder pumping plate (5) upwards and then is communicated with the discharge end of the rough filling head (4), a powder pumping cavity is arranged between the powder filling pipe (6) and the recovery powder pumping plate (5), the recovery powder pumping plate (5) is provided with a powder pumping hole (51), the powder pumping hole (51) is communicated with the powder pumping cavity, and the powder pumping hole (51) is communicated with a powder recovery pipe (8) of the vacuum recovery mechanism.

3. The filling powder circulation system of claim 2, wherein: the rough filling head (4) is provided with an air outlet (41) which is provided with an air exhaust component; the exhaust assembly comprises an exhaust air cylinder (16) and a blocking block (17), the exhaust air cylinder (16) is installed on the rough filling head (4), a piston rod of the exhaust air cylinder (16) is connected with the blocking block (17), and the blocking block (17) corresponds to the exhaust port (41).

4. The filling powder circulation system of claim 1 or 2, wherein: the vacuum recovery mechanism comprises a recovery powder pipe (8), a vacuum filter box (9), a vacuum pump, at least two recovery bins (10) and a vacuum valve (111); the recovery powder pipe (8) is communicated with the vacuum filter box (9), the vacuum filter box (9) is communicated with the recovery bin (10), and the vacuum filter box (9) is communicated with the vacuum pump through a vacuum valve (111).

5. The filling powder circulation system of claim 4, wherein: the vacuum filter box (9) comprises a primary vacuum filter mechanism and a secondary vacuum filter mechanism, the primary vacuum filter mechanism is communicated with the secondary vacuum filter mechanism through a communicating pipe, the primary vacuum filter mechanism is provided with a gas material inlet, and the gas material inlet is communicated with the powder recovery pipe (8); the second-stage vacuum filtering mechanism is provided with an air outlet which is communicated with the vacuum valve (111).

6. The filling powder circulation system of claim 5, wherein: the primary vacuum filtering mechanism comprises a primary filtering bin (900), a primary filter element (901), a primary filter element mounting plate (902), a primary sealing plate (903) and a primary distributing bin (904); the primary filter element (901) is arranged on a primary filter element mounting plate (902), the primary filter element mounting plate (902) is arranged in the primary filter bin (900), the primary filter element mounting plate (902) and the inner wall of the primary filter bin (900) form a primary filter cavity, the primary filter cavity is communicated with a primary separation bin (904), and the primary separation bin (904) is communicated with a recovery bin (10); the primary filtering bin (900) is provided with a gas material inlet which is communicated with the primary filtering cavity; the primary sealing plate (903) is arranged in the primary filtering bin (900), and the primary filter element mounting plate (902), the primary sealing plate (903) and the inner wall of the primary filtering bin (900) form a primary air filtering cavity (905); the primary air filter cavity (905) is communicated with an air inlet of the communicating pipe.

7. The filling powder circulation system of claim 6, wherein: the secondary vacuum filtering mechanism comprises a secondary filtering bin (906), a secondary filter element (907), a secondary filter element mounting plate (908), a secondary sealing plate (909) and a secondary distributing bin (910); the secondary filter element (907) is arranged on a secondary filter element mounting plate (908), the secondary filter element mounting plate (908) is arranged in the secondary filter bin (906), the secondary filter element mounting plate (908) and the inner wall of the secondary filter bin (906) form a secondary filter cavity, the secondary filter cavity is communicated with a secondary separation bin (910), and the secondary separation bin (910) is communicated with a recovery bin (10); the secondary filter chamber is communicated with the air outlet of the communicating pipe; the secondary sealing plate (909) is arranged in the secondary filtering bin (906), and the secondary filter element mounting plate (908), the secondary sealing plate (909) and the inner wall of the secondary filtering bin (906) form a secondary air filtering cavity (911); the secondary air filtering cavity (911) is provided with an air outlet.

8. The filling powder circulation system of claim 7, wherein: the primary sealing plate (903) and the secondary sealing plate (909) are provided with air vents, and exhaust assemblies are arranged at the air vents; the exhaust assembly comprises an exhaust cylinder (16) and a blocking block (17), wherein the exhaust cylinder (16) is installed on a first-stage sealing plate (903) or a second-stage sealing plate (909), a piston rod of the exhaust cylinder (16) is connected with the blocking block (17), and the blocking block (17) corresponds to an air release port in the first-stage sealing plate (903) or an air release port in the second-stage sealing plate (909).

9. The filling powder circulation system of claim 1, wherein: the fine-filling mechanism comprises a buffer bin member and a stirring bin member, wherein the buffer bin member comprises at least two buffer bins (18), and a feeding hole of each buffer bin (18) is communicated with a fine-infusion material pipe (19); the discharge hole of each buffer bin (18) is communicated with the stirring bin of the stirring bin component.

10. The filling powder circulation system of claim 9, wherein: the stirring bin component comprises stirring bins (11), a conveying pipe (12), a stirring motor (13), a stirring shaft (14) and stirring blades (15), wherein the stirring bins (11) are positioned below the buffer bins (18), and a feed inlet of each stirring bin (11) is communicated with a discharge outlet of each buffer bin (18); the discharge ports of the stirring bin (11) are respectively communicated with a material conveying pipe (12); stirring motor (13) are installed outside stirring feed bin (11) and the output shaft of stirring motor (13) passes through the shaft coupling and is connected with (mixing) shaft (14), and (mixing) shaft (14) set up in stirring feed bin (11) bottom and at stirring feed bin (11) internal rotation, and stirring leaf (15) are installed on (mixing) shaft (14).