CN113860011B

CN113860011B - Powder feeding system with dustproof function

Info

Publication number: CN113860011B
Application number: CN202111164973.5A
Authority: CN
Inventors: 汪洋; 臧红辉; 邱增明; 肖海军; 沈志刚
Original assignee: Chongqing Wankai New Material Technology Co ltd
Current assignee: Chongqing Wankai New Material Technology Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-05-16
Anticipated expiration: 2041-09-30
Also published as: CN113860011A

Abstract

The invention relates to the technical field of dust prevention structures in chemical workshops, in particular to a powder feeding system with a dust prevention function. Firstly, the setting of check valve can avoid the feed bin raise dust to fly out from the charge door, secondly, through the combination of dust catcher and pipeline subassembly with throw the raise dust that produces in the stub bar and suck away, further reduced the condition that the dust flies out the charge door. Meanwhile, the check valve is matched with the dust remover, so that the dust removing pressure of the dust remover can be reduced, and the situation that the dust removing pressure is high due to the fact that the dust remover is only arranged is avoided, and then the dust removing capacity of the dust remover is reduced or the dust remover is aged rapidly.

Description

Powder feeding system with dustproof function

Technical Field

The invention relates to the technical field of dust prevention structures in chemical workshops, in particular to a powder feeding system with a dust prevention function.

Background

The polymer material has good performance, can be applied to various occasions such as life or industry, and the like, and gradually occupies important positions in the life development of people, so that in order to ensure the supply of the polymer material and raw materials thereof, chemical enterprises also appear like spring bamboo shoots after rain, and the problems of environmental influence and staff occupational diseases of the chemical enterprises also appear along with the improvement of the yield.

In general chemical enterprises, during the processing of powder materials, a material bag filled with the materials is reversely buckled on a feeding hopper by adopting a manual or machine, and the materials enter a feed bin through a feed inlet at the bottom of the feeding hopper, so that the feeding is realized; in the feeding process, however, no matter which feeding mode is adopted, a large amount of dust is inevitably generated when materials enter the bin, and the chemical dust is not only the main murder of the lung occupational diseases of most chemical workshop workers, but also one of the important reasons for the surrounding air pollution of chemical enterprises.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the powder feeding system with the dustproof function is provided, so that the problem that the environment is influenced or staff lung occupational diseases are easily caused due to a large amount of dust in a chemical workshop is solved.

The technical scheme adopted by the invention is as follows: the utility model provides a powder throws addition system with dustproof function, includes the feed bin, throws the hopper, it installs to throw the hopper on the feed bin, still includes dust shaker, pipeline subassembly, the dust shaker pass through pipeline subassembly with throw the hopper and be connected, throw the hopper with still install the check valve between the feed bin.

The beneficial effects are that:

1. through the setting of check valve, can avoid falling into the material powder in the feed bin and fly out from the charge door after the lift-off, great reduction the flying dust the quantity of feed bin, reduced the emergence of the flying dust condition, reduced in the workshop and outside air pollution, ensured the healthy of staff.

2. The dust generated in the feeding hopper is absorbed and treated through the cooperation of the dust collector and the pipeline assembly, so that the dust in a workshop is further reduced.

3. Through the cooperation of check valve and dust shaker, can also reduce the dust removal pressure of dust shaker, avoid leading to dust removal pressure big because only setting up the dust shaker, and then make the condition that dust shaker dust removal ability descends or ages fast.

Preferably, a feeding cover is arranged at the upper part of the feeding hopper, a feeding hole is formed in the feeding cover, and the diameter of the feeding hole is smaller than the diameter of a material bag of the added powder. Through the setting of throwing the material cover, can put the material bag on throwing the material cover when throwing the material, because the diameter of throwing the material hole is less than the diameter of material bag, consequently the circumference of material bag can press on throwing the material cover, through the gravity shutoff of material self throw the material hole, can reduce the flying-out of dust from throwing the material hole at the early stage of throwing, further reduction raise dust.

Preferably, the pipeline assembly comprises a dust removing pipeline, an air suction pipe and an air suction inlet, wherein the dust removing pipeline is connected with the dust remover, the dust removing pipeline is connected with the air suction inlet through the air suction pipe, and the air suction inlet is arranged at the upper end of the feeding hopper. Because some dust in the raise dust can fall down again after being raised and floating for a period of time and enter into the feed bin, therefore install the inlet scoop in the upper end of throwing the hopper on the one hand can only throw the hopper top surface and probably can creep to the raise dust absorption in the hopper outside, and the raise dust in the middle part of throwing the hopper can fall independently, reduce the waste of material, on the other hand has also reduced the absorption capacity of dust, reduced the operating pressure of aspiration channel, dust removal pipeline and dust shaker, improved its life.

Preferably, the air suction pipe is T-shaped, two horizontal ends of the air suction pipe are respectively connected with a feeding hopper, and the other end of the air suction pipe is connected with a dust removing pipeline. The T-shaped air suction pipe can simultaneously perform air suction treatment on two sides and blow out the air from the other end, so that the efficiency is improved.

Preferably, the dust removing pipeline is located below the air suction pipe, the dust removing pipeline is connected with the storage bin through a communication section, the air suction pipe is located above the communication section, the air suction pipe is vertically arranged, and a check valve is also installed between the communication section and the storage bin of the dust removing pipeline.

Such an arrangement has the following advantages:

1. in the design process, if the air suction pipe is horizontally arranged, when the air suction pipe and the dust removing pipeline are positioned at the same height, a horizontal corner is formed at the position where the air suction pipe and the dust removing pipeline are connected, when dust passes through the corner, partial dust can fall at the corner due to the reduction of the air flow speed at the corner, the dust removing pipeline can be caused to reduce the dust removing efficiency due to accumulation of the dust for a long time, the air suction pipe is arranged above the communication section of the dust removing pipeline, a falling opening is formed in the corner, part of dust blown out from the lower end of the air suction pipe moves towards the communication section and then falls on the check valve, so that the dust is split, and the pressure of the dust remover and the dust removing pipeline is reduced.

2. After a certain amount of dust can be accumulated by installing the check valve between the dust removing pipeline and the storage bin, the dust can automatically fall into the storage bin through the check valve, so that the waste of the material powder is reduced.

3. The setting of check valve can also guarantee to seal between dust removal pipeline and the feed bin at ordinary times, prevents the dust in the feed bin by the air current suction in the dust removal pipeline, has both saved the material, has reduced the floating dust in the workshop again, ensures that workman's in the workshop is healthy not influenced by the material powder.

Preferably, the check valve comprises a fixed plate, a turning blade and an intermediate shaft, wherein the intermediate shaft is connected to the fixed plate, a through hole is formed in the middle of the fixed plate, the turning blades are provided with two parts, one end of each turning blade is connected with the intermediate shaft in a rotating mode, the other end of each turning blade is in butt joint with one side of the fixed plate, a first connecting plate is arranged on the intermediate shaft, a first hanging hole is formed in the first connecting plate, a second connecting plate is arranged on each turning blade, a second hanging hole is formed in the second connecting plate, an elastic piece is arranged between the first connecting plate and the second connecting plate, and two ends of the elastic piece are connected with the first hanging hole and the second hanging hole respectively.

The existing check valve generally adopts an electric rotary valve, but the electric rotary valve also has certain problems, wherein the first is that the electric rotary valve is high in cost, and in the use process, the electric rotary valve can continuously generate electric power cost, the second is that the electric rotary valve is required to be frequently opened and closed due to the fact that the work intensity in a workshop is large, the electric rotary valve is easy to damage due to heavy load work, the third is that the electric rotary valve has certain delay in the use process, after powder is completely put into a storage bin, the rotary valve is closed, in the process from the start of closing to the complete closing of the electric rotary valve, dust in the storage bin still flies out from the rotary valve, and then the dust flies into the workshop, so that the situation of 'dust diffusion' is wholly generated in the workshop. And adopt the check valve of present this kind of structure, two turning vane rotate through the jackshaft respectively and connect on the fixed plate, and the one end that turning vane kept away from the jackshaft is in the lower looks butt of fixed plate when extreme position, and the second connecting plate that sets up above the turning vane is connected with first connecting plate through the elastic component, make turning vane keep closed state through the elastic component, when feeding, bulk material powder piles up on the check valve, under the effect of material powder gravity, the turning vane motion in the pressing check valve, two turning vane rotate around the jackshaft respectively, the elastic component is stretched at this moment, thereby make the through-hole be opened, the powder just can get into in the feed bin, when the material powder's of piling up on the check valve gravity is insufficient to promote turning vane, turning vane is pulled under the elastic force effect of elastic component, and then the butt is on the lower surface of fixed plate, seal the through-hole, prevent that the material dust that just gets into the feed bin from getting into the air and influencing workman's health.

By adopting the check valve, the two overturning blades are pulled to open or close the through hole through the elasticity of the elastic piece, the structure is simple and effective, electric control is not needed, the cost of the check valve is greatly reduced, the structure of a pure machine can be fast responded, the service life is long, the check valve cannot be easily disabled, meanwhile, when the check valve is closed, a certain amount of powder is accumulated above the overturning blades, and therefore the powder above the overturning blades continuously enters the through hole in the closing process of the check valve, the situation that dust in a bin floats out of the through hole in the closing process of the check valve is further avoided, the dust prevention effect in a workshop is more excellent, and the health of staff in the workshop is further guaranteed.

Preferably, the turning blade is a semicircular blade, the radius of the turning blade is larger than that of the through hole, and an annular connecting piece is fixedly connected to the straight edge of the turning blade and connected with the intermediate shaft through the connecting piece. The feeding hole can be completely covered, so that the sealing effect of the turning blade on the feeding hole is ensured.

Preferably, a material taking mechanism is further arranged above the feeding hopper, a baffle is further arranged on the top surface of the feeding hopper, and the baffle surrounds the periphery of the top surface of the feeding hopper. The material taking mechanism can adopt an electric hoist, the material bag is lifted up through the electric hoist and placed on the material feeding cover, so that the labor intensity of operators can be reduced, the height adjustment is convenient, the material bag is stacked on the material feeding cover when the materials in the material bag at the earlier stage are sufficient, and the material bag is lifted up again when the materials in the material bag at the later stage are reduced and cannot automatically fall, so that the materials in the material bag can freely fall into the material feeding hopper below; the baffle surrounds the periphery of the feeding hopper, so that the material bags stacked on the feeding cover can be effectively protected and limited, and the material bags are prevented from falling from the upper part.

Preferably, the feeding hopper is further provided with a bag opening mechanism, the bag opening mechanism comprises a cutter component, the cutter component comprises a rotating shaft and a plurality of blades, the rotating shaft is connected to the side wall of the feeding hopper, the blades are vertically fixed on the rotating shaft, and the blades rotate along with the rotating shaft. The bag opening mechanism drives the blade to rotate through the rotating shaft, the bottom of the material bag placed on the material feeding cover is cut, and then the material can fall off.

Preferably, the bag opening mechanism further comprises a moving part, the moving part comprises a guide groove, a gear and a rack, the guide groove is formed in two side walls of the feeding hopper, the rack is arranged on one side of the guide groove, the gear is connected to one end of the rotating shaft, and the gear is meshed with the rack. Through rotating the pivot, just can make the gear remove on the rack for the pivot can enough take place the translation, also can take place to rotate, can make on the one hand tear open bag mechanism and remove simultaneously cut, increase the cutting area, make the material drop that can be more smooth and easy, on the other hand make to tear open bag mechanism and can remove the both sides to throwing the hopper, avoid tearing open bag mechanism and block the material, further improved the dropping efficiency of material.

Preferably, the two ends of the guide groove are inclined linear guide grooves, the middle parts of the linear guide grooves at the two ends are connected through arc-shaped guide grooves, and the shape of the rack is matched with that of the guide groove. Through such setting for bag tearing mechanism highly rise gradually when moving towards the hopper middle part, so as to cut the material bag, avoid because material bag and blade exist the difference in height and lead to the circumstances of cutting failure, also can make bag tearing mechanism in the batch charging cover below at ordinary times simultaneously, avoid the workman to touch the blade by mistake and take place the accident when carrying out the operation, ensured workman's safety.

Drawings

Fig. 1 is a schematic perspective view of an embodiment 1 of a powder feeding system with dust-proof function according to the present invention.

Fig. 2 is a schematic top view of an embodiment 1 of a powder feeding system with dust-proof function according to the present invention.

Fig. 3 is a schematic perspective view of a check valve in a powder feeding system with dust-proof function according to the present invention.

Fig. 4 is a schematic cross-sectional view of a check valve in a powder feeding system with dust prevention function according to the present invention.

Fig. 5 is a schematic perspective view of an embodiment 2 of a powder feeding system with dust-proof function according to the present invention.

Fig. 6 is an enlarged partial schematic view of the area "a" in fig. 5.

Fig. 7 is a schematic top view of an embodiment 2 of a powder feeding system with dust-proof function.

Fig. 8 is a schematic diagram showing a front view of an embodiment 2 of a powder feeding system with dust-proof function according to the present invention.

Wherein, 1, a stock bin; 2. a charging hopper; 2.1, a feeding cover; 2.2, baffle plates; 3.1, a dust remover; 3.2, a dust removing pipeline; 3.3, an air suction pipe; 3.4, an air suction inlet; 4. a check valve; 4.1, a fixing plate; 4.2, turning over the blade; 4.3, an intermediate shaft; 4.4, through holes; 4.5, a first connection plate; 4.6, a second connecting plate; 4.7, an elastic piece; 5. a bag removing mechanism; 5.1, cutter members; 5.2, a guide groove; 5.3, gears; and 5.4, a rack.

Detailed Description

The invention is further described below with reference to the drawings and the detailed description.

Example 1

According to the description, as shown in the attached drawings 1-4, the invention provides a powder feeding system with a dustproof function, which comprises a bin 1, a feeding hopper 2 and a dust removing mechanism, wherein the feeding hopper 2 is connected with the bin 1, a check valve 4 is further arranged between the bin 1 and the feeding hopper 2, whether the bin 1 is communicated with the feeding hopper 2 or not is controlled by opening and closing the check valve 4, when the check valve 4 is opened, the bin 1 is communicated with the feeding hopper 2, powder can smoothly enter the bin 1, and when the check valve 4 is closed, the powder falling into the bin 1 is prevented from drifting into the air from the feeding hopper 2, meanwhile, the dust removing mechanism comprises a dust remover 3.1, a dust removing pipeline 3.2, an air suction pipe 3.3 and an air suction inlet 3.4, wherein the air suction inlet 3.4 is trapezoid, the flaring position of the dust removing mechanism is communicated with the upper part of the feeding hopper 2, and the air suction inlet 3.4 is welded with the outer wall of the feeding hopper 2 to form a seal; the narrow opening end of the air suction opening 3.4 is communicated with the air suction pipe 3.3; the aspiration channel is communicated with the dust removal pipeline 3.2, the dust removal pipeline 3.2 is communicated with the dust remover 3.1, in the embodiment, the dust remover 3.1 adopts a pulse cloth bag dust remover, the dust remover 3.1 can generate certain negative pressure, and the dust in the feeding hopper 2 is sucked through the air suction port 3.4, so that the dust amount is reduced, the end part of the air suction port 3.4 connected with the feeding hopper 2 is a trapezoid flaring part, dust suction work with a wider range can be carried out in the feeding hopper 2, and the dust suction efficiency is improved. The check valve 4 installed between the bin 1 and the hopper is used for blocking dust, the dust removing mechanism is combined for absorbing the dust, the dust generated in the feeding process can be greatly reduced, and then the problem of physical health and potential safety hazard of workshop workers are solved, and the problem of environmental pollution is also relieved.

The upper part of the feeding hopper 2 is also provided with a feeding cover 2.1, the feeding cover 2.1 is connected to the upper end of the feeding hopper 2 in a welding mode, the feeding cover 2.1 is provided with a feeding hole, and the diameter of the feeding hole is smaller than the diameter of a material bag of the added powder. When throwing the material during operation, directly place the material bag on throwing material cover 2.1, because the external diameter of material bag is greater than the diameter of throwing the material hole for the periphery of material bag compresses tightly on throwing material cover 2.1 frame all around under self gravity, and then plugs up throwing the material hole, just so can reduce the probability that the dust was thrown Kong Feichu from throwing in the earlier stage of throwing the material process, reduce the appearance of dust in the workshop.

In order to reduce the waste of the powder, the air suction port 3.4 is arranged at the upper end of the feeding hopper 2, only the dust floating to the upper end of the feeding hopper 2 is sucked, and the dust enters the storage bin 1 through the check valve 4, so that the waste of the powder can be reduced, the absorption capacity of the dust is reduced, the working pressure of the dust remover can be reduced, and the service life of the dust remover is prolonged.

In this embodiment, the air suction pipe 3.3 is in a T shape, two ends of the upper portion of the air suction pipe 3.3 are both communicated with one feeding hopper 2, dust collection can be performed on two feeding hoppers 2 at the same time, the dust removal pipeline 3.2 is connected with the storage bin 1 through a communication section, in this embodiment, the end portion of the dust removal pipeline 3.2 is connected with the storage bin 1 through an arc-shaped communication section, the lower end of the air suction pipe 3.3 is connected with the dust removal pipeline 3.2, the air suction pipe 3.3 is located above the communication section, and the check valve 4 is installed between the communication section of the dust removal pipeline 3.2 and the storage bin 1. The dust is inhaled through the suction inlet 3.4 in the shape of T by the suction pipe 3.3, the position that suction pipe 3.3 and dust removal pipeline 3.2 are connected forms a corner, through such setting, in the dust moves the in-process along with the air current towards dust removal pipeline 3.2, a drop mouth appears in the corner, the partial dust of corner alright fall to the lower part of "T" shape suction pipe 3.3, flow distribution has been carried out to the dust like this, make partial dust pile up in the intercommunication section of dust removal pipeline 3.2, and fall on check valve 4, when the dust that piles up reaches certain weight, can drop to the feed bin 1 of below through check valve 4, the recovery of material powder has been realized, and another partial material powder follows the air current and gets into dust removal pipeline 3.2, and by dust remover 3.1 absorption treatment, on the basis that has reduced the dust in the workshop circumstances, through the suction pipe 3.3 to the dust recycling partial material powder, the waste of reduction raw and the dust removal effect of pile up in dust removal pipeline 3.2 can also be reduced, dust remover 3.1 is reduced.

The check valve 4 comprises a fixed plate 4.1, a turning blade 4.2 and an intermediate shaft 4.3 shown in fig. 3, wherein the fixed plate 4.1 is an annular plate, the middle part of the fixed plate 4.1 is a circular through hole 4.4, and a plurality of connecting holes for installing and fixing the check valve 4 are formed in the periphery of the through hole 4.4; an intermediate shaft 4.3 is arranged along the diameter of the through hole 4.4, and two ends of the intermediate shaft 4.3 are respectively welded and fixed with the fixed plate 4.1; the two turning blades 4.2 are arranged, and the two turning blades 4.2 are semicircular and are symmetrically arranged on two sides of the intermediate shaft 4.3 respectively, so that when the two turning blades 4.2 are in a horizontal state, the through holes 4.4 can be covered. Two groups of connecting pieces are sleeved on the intermediate shaft 4.3, and each group of connecting pieces is fixedly connected with one turning blade 4.2 respectively; each group of connecting pieces comprises two connecting rings arranged at two ends of the intermediate shaft 4.3, and the connecting rings are welded with the turning blades 4.2, so that the turning blades 4.2 rotate around the intermediate shaft 4.3.

In order to further ensure the covering effect of the turning vane 4.2 on the through hole 4.4, the connecting ring has a certain wall thickness; the turning blades 4.2 are welded and fixed at the bottom of the connecting ring; the radius of the turning blade 4.2 is larger than that of the through hole 4.4, and the radius of the turning blade 4.2 is smaller than that of the fixing plate 4.1; the two turning blades 4.2 rotate about the intermediate shaft 4.3 below the fixing plate 4.1.

The middle shaft 4.3 is also provided with a first connecting plate 4.5 which is vertically arranged, the first connecting plate 4.5 is connected to the middle shaft 4.3 in a welding mode, the first connecting plate 4.5 is provided with a first hanging hole, the middle part of the turning blade 4.2 is welded with a second connecting plate 4.6, the second connecting plate 4.6 is provided with a second hanging hole, an elastic piece 4.7 is arranged between the first hanging hole and the second hanging hole, in the embodiment, the elastic piece 4.7 adopts an extension spring, and the turning blade 4.2 is upwards tensioned by the connection of the extension spring; meanwhile, as shown in fig. 4, since the radius of the turning vane 4.2 is larger than that of the through hole 4.4, when the turning vane 4.2 covers and closes the through hole 4.4, the end of the turning vane 4.2 is blocked by the fixing plate 4.1 while being tightly attached to the bottom of the fixing plate 4.1. Through such setting, on the one hand can make the upset blade 4.2 hug closely fixed plate 4.1 at ordinary times, guarantee the closed condition of check valve 4, prevent that the dust from flying out, on the other hand can make check valve 4 only pile up the powder of certain weight above just can be opened after can be opened for check valve 4 can be when having the dust to pile up, and when the dust on the check valve 4 all falls into behind feed bin 1 basically self-closing.

Simultaneously, in order to protect the safety in powder feeding system and the workshop, all let in nitrogen gas in aspiration channel 3.3, dust removal pipeline 3.2, the nitrogen gas can protect in the pipeline, avoids the air current that is rich in dust to explode, ensures that dustproof construction can safe and stable carry out the operation, has also ensured workman's life safety in the workshop.

The working principle is that when feeding, a material bag is placed above a feeding cover 2.1, the material powder in the material bag falls into a feeding hopper 2, in the falling process of the material powder, a feeding hole is blocked due to the gravity action of the material bag, flying dust in the feeding hopper 2 to the outer side of the feeding hopper 2 is reduced, the material powder entering the feeding hopper 2 falls above a check valve 4, under the gravity action of the material powder, a turning blade 4.2 of the check valve 4 is pushed open, the material powder can freely fall into a storage bin 1, when the material powder above the check valve 4 basically falls into the storage bin 1, the weight of the material powder accumulated on the turning blade 4.2 is smaller than the tension of an elastic piece 4.7, the turning blade 4.2 rotates to a position attached to a fixed plate 4.1, the check valve 4 is closed, flying dust in the storage bin 1 is blocked, the material powder is prevented from flying out, meanwhile, the air suction inlet 3.4 arranged at the upper end of the feeding hopper 2 absorbs dust floating to the upper end of the feeding hopper 2, and the dust enters the dust removing pipeline 3.2 through the air suction pipe 3.3, so that in the process of moving in the air suction pipe 3.3, part of the dust enters the lower end of the air suction pipe 3.3 and is accumulated through the split flow action of the T-shaped air suction pipe 3.3, finally, part of the dust enters the storage bin 1 through the check valve 4 to be recovered, the rest part of the dust flows through the dust removing pipeline 3.2 and finally enters the dust remover 3.1 to be treated, through the arrangement, most of dust generated in the feeding process can be removed, the physical and health problems of workshop workers can be solved, the environmental pollution can be relieved, and the redundant materials can be collected into the storage bin 1 through the air suction inlet 3.4 to be utilized, so that the resource waste is reduced.

Example 2

According to the embodiment 1, a material taking mechanism is further arranged above the feeding hopper 2, a baffle plate 2.2 is arranged on the top surface of the feeding hopper 2, and the baffle plate 2.2 surrounds the periphery of the top surface of the feeding hopper 2; in the embodiment, the material taking mechanism adopts the electric hoist, the material bag is lifted up through the electric hoist, the manual carrying work is omitted, the labor intensity is reduced, meanwhile, the material hopper 2 is protected through the baffle plate 2.2, the material bag is prevented from falling from the material hopper 2, and the safety performance of the powder feeding system is improved.

Meanwhile, the bag opening mechanism 5 is further installed on the feeding hopper 2, the bag opening mechanism 5 comprises a cutter part 5.1 and a moving part, the cutter part 5.1 comprises a blade and a rotating shaft, the blade is vertically connected to the rotating shaft by adopting an annular blade, when the rotating shaft rotates, the blade can be driven to rotate together, the moving part comprises a guide groove 5.2, a gear 5.3 and a rack 5.4, in the embodiment, the guide groove 5.2 is formed in the front side surface and the rear side surface of the feeding hopper 2, two ends of the rotating shaft are respectively located in the guide grooves 5.2 on two sides, the rack 5.4 is arranged below the guide groove 5.2, the gear 5.3 is fixedly connected with the rotating shaft, and the gear 5.3 is meshed with the rack 5.4, so that when the rotating shaft rotates, the rotating shaft can be driven to move along the rack 5.4 by the meshing relationship of the gear 5.3, the blade can rotate along the rotating shaft, the feeding hopper 2 can be cut, meanwhile, the guide groove 5.2 can also guide the gear and the gear 5.3 can be guided by the rack 5.4, and the limit of the rotating shaft can be kept in a limited relationship with the rack 5.4.

Furthermore, in order to avoid dust leakage from the guide groove, the brush is arranged on the side wall of the feeding hopper, the guide groove is shielded by the brush, so that dust leakage can be avoided, and the rotating shaft can smoothly move in the guide groove.

In order to further ensure that the material bag can be cut smoothly, the guide groove 5.2 comprises a left guide groove, an arc-shaped guide groove and a right guide groove; wherein the left guide groove and the right guide groove are symmetrically arranged to form a splayed shape; the arc guide slot is connected between the left guide slot and the right guide slot, so that the two guide slots are in arc transition, and the gear 5.3 is more convenient to move. Therefore, the cutter component 5.1 can move from the lower positions on the two sides to the middle to reach a higher position, the cutter component 5.1 can cut the material bag more smoothly, the bag removing work is carried out, the cutter component 5.1 can be kept on the two sides of the feeding hopper 2 when not used at ordinary times, the damage of a blade to a person or the blocking of falling powder is avoided, the safety can be ensured, and the feeding efficiency can be improved.

Directional terms, such as "upper", "lower", "left", "right", etc., as used herein are merely directions shown with reference to fig. 2 of the specification, and thus, are used for better and more clearly explaining and understanding the present invention, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

The foregoing description of the preferred embodiments of the present invention is provided for illustration and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed, and all changes made within the scope of the invention as independently claimed are within the scope of the invention.

Claims

1. The powder feeding system with the dustproof function comprises a bin and a feeding hopper, wherein the feeding hopper is arranged on the bin; the pipeline assembly comprises a dust removing pipeline, an air suction pipe and an air suction inlet, the dust removing pipeline is connected with the dust remover, the dust removing pipeline is connected with the air suction inlet through the air suction pipe, and the air suction inlet is arranged at the upper end of the charging hopper; the air suction pipe is T-shaped, two horizontal ends of the air suction pipe are respectively connected with a feeding hopper, and the other end of the air suction pipe is connected with a dust removing pipeline; the dust removing pipeline is positioned below the air suction pipe, the dust removing pipeline is horizontally arranged, one end of the dust removing pipeline, which is far away from the dust remover, is connected with the storage bin through a communication section, the air suction pipe is positioned above the communication section, one end of the air suction pipe, which is connected with the dust removing pipeline, is vertically arranged, a check valve is also arranged between the communication section of the dust removing pipeline and the storage bin, and the communication section is arc-shaped; dust moves towards the dust remover under the adsorption action of the dust remover, when the dust passes through the corner formed by the connection position of the air suction pipe and the dust removing pipeline, part of dust falls into the communication section below the air suction pipe due to the reduction of the air flow speed and is accumulated on the check valve, so that dust is prevented from accumulating in the dust removing pipeline.

2. The powder feeding system with a dustproof function according to claim 1, wherein a feeding cover is arranged at the upper part of the feeding hopper, a feeding hole is formed in the feeding cover, and the diameter of the feeding hole is smaller than that of a material bag of the fed powder.

3. The powder feeding system with a dustproof function according to claim 1, wherein the check valve comprises a fixed plate, a turnover blade and an intermediate shaft, the intermediate shaft is connected to the fixed plate, through holes are formed in the middle of the fixed plate, two turnover blades are arranged, one ends of the turnover blades are rotatably connected with the intermediate shaft, the other ends of the turnover blades are abutted to one side of the fixed plate, a first connecting plate is arranged on the intermediate shaft, a first hanging hole is formed in the first connecting plate, a second connecting plate is arranged on the turnover blade, a second hanging hole is formed in the second connecting plate, an elastic piece is installed between the first connecting plate and the second connecting plate, and two ends of the elastic piece are respectively connected with the first hanging hole and the second hanging hole.

4. The powder feeding system with a dust prevention function according to claim 3, wherein the turning blade is a semicircular blade, the radius of the turning blade is larger than that of the through hole, and an annular connecting piece is fixedly connected to the straight edge of the turning blade and is connected with the intermediate shaft through the connecting piece.

5. The powder feeding system with a dust prevention function according to claim 2, wherein the feeding hopper is further provided with a material taking mechanism above, the top surface of the feeding hopper is further provided with a baffle plate, and the baffle plate surrounds the periphery of the top surface of the feeding hopper.

6. The powder feeding system with a dust prevention function according to claim 5, wherein the feeding hopper is further provided with a bag opening mechanism, the bag opening mechanism comprises a cutter component, the cutter component comprises a rotating shaft and a plurality of blades, the rotating shaft is connected to the side wall of the feeding hopper, the blades are vertically fixed on the rotating shaft, and the blades rotate along with the rotating shaft.

7. The powder feeding system with dustproof function according to claim 6, wherein the bag opening mechanism further comprises a moving part, the moving part comprises a guide groove, a gear and a rack, the guide groove is formed in two side walls of the feeding hopper, the rack is arranged on one side of the guide groove, the gear is connected to one end of the rotating shaft, and the gear is meshed with the rack.