CN213059328U - Powder conveying and feeding system - Google Patents

Abstract

The utility model discloses a powder conveying feeding system, include: former feed bin, with former feed bin accepts continuous stifled powder screw conveyer, accepts continuous high accuracy powder weigher through first connecting pipe and stifled powder screw conveyer to and accept continuous powder material loading machine through second connecting pipe and high accuracy powder weigher.

Description

Powder conveying and feeding system

Technical Field

The utility model relates to a powder processing equipment technical field especially relates to a powder conveying feeding system.

Background

The dry powder mortar is a common building material, and in the production and processing process of the dry powder mortar, the conveying and feeding of each powder material are realized by the cooperation of a conveyor and a feeding machine, and in order to effectively control the feeding amount of the powder material, a metering scale capable of effectively controlling the powder material amount is also required to be arranged between the conveyor and the feeding machine.

In the prior art, in the process of processing powder, when the powder needs to be conveyed, a spiral conveyor is often adopted to realize the powder conveying, and the spiral conveyor comprises a packing auger. However, for the screw conveyer generally adopted in the prior art, especially for sticky powder materials, the problem of material accumulation and accumulation easily occurs at the material inlet corresponding to the auger. Therefore, the blockage situation can occur at the feeding port corresponding to the auger, and the whole powder conveying efficiency is influenced.

In the processing and production process of the dry powder mortar, different powder materials are required to be measured differently, the use amount of some powder materials is small, the use amount of some powder materials is large, and the use and measurement of each powder material are strictly controlled so as to effectively meet the characteristics of the produced dry powder mortar in use. Therefore, the amount of each powder needs to be strictly controlled in the production process of the dry powder mortar, so as to ensure the quality of the produced dry powder mortar. In view of the above situation, in the prior art, the amount of each powder in the production process of dry powder mortar is controlled by the powder weigher, so that the metering of the powder in the production and processing process of dry powder mortar can be strictly controlled only by improving the use accuracy of the powder weigher.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a powder conveying and feeding system to solve the technical problem that improves the powder and carry material loading efficiency.

The utility model discloses a powder conveying feeding system is realized like this:

a powder delivery loading system comprising: former feed bin, with former feed bin accepts continuous stifled powder screw conveyer, accepts continuous high accuracy powder weigher through first connecting pipe and stifled powder screw conveyer to and accept continuous powder material loading machine through second connecting pipe and high accuracy powder weigher.

In the preferred embodiment of the present invention, the anti-blocking powder screw conveyor comprises:

the work bin comprises a large inner diameter part and a small inner diameter part which are communicated with each other; wherein the inner diameter of the large inner diameter part is larger than that of the small inner diameter part;

the feeding auger shaft penetrates through the large inner diameter part and the small inner diameter part;

the auger blade spirally surrounds the feeding auger shaft along the axial direction of the feeding auger shaft;

the bulk cargo part is arranged in the large inner diameter part and comprises at least one tubular bulk cargo pipe spirally surrounding the feeding auger shaft along the axial direction of the feeding auger shaft; and the outer diameter of the tubular bulk material pipe relative to the feeding auger is larger than the outer diameter of the auger blade relative to the feeding auger.

In a preferred embodiment of the present invention, an area suitable for the powder to pass through is formed between the tubular bulk material pipe and the feeding auger shaft.

In the preferred embodiment of the present invention, the tubular bulk material pipe is connected to the feeding auger shaft through a plurality of supporting ribs.

In a preferred embodiment of the present invention, a feed inlet is disposed on a side wall of the large inner diameter portion; the feeding port is positioned above the feeding auger shaft;

a discharge pipe is arranged on the side wall of the part of the small inner diameter part far away from the large inner diameter part; the discharge pipe is positioned below the feeding auger shaft.

In a preferred embodiment of the present invention, the high-precision additive weighing scale comprises: the weighing system comprises a weighing scale bucket, at least two weight sensors arranged on the outer side wall of the weighing scale bucket, a feeding cover flexibly connected with a blanking port of the weighing scale bucket, and a material passing pipe connected with a discharging port of the weighing scale bucket; wherein

One end of the material passing pipe, which is far away from the measuring scale bucket, is flexibly connected with a discharging pipe;

the feeding cover is connected with the discharging pipe in a matching mode through the first connecting pipe.

In a preferred embodiment of the present invention, the material passing pipe is further connected with a first butterfly valve; and

the discharge pipe is also connected with a second butterfly valve in a matching mode.

In the preferred embodiment of the present invention, the powder feeder comprises: the device comprises a material box and hoppers which are respectively connected with the material box through a material conveying pipe; wherein

The side wall of the feed box is also provided with an air inlet pipe; the lower end of the material box is also provided with a material discharging pipe; and

the top of the material box is also provided with a back-blowing type air suction mechanism;

the hopper is connected with the discharge pipe in a matching mode through the second connecting pipe.

In a preferred embodiment of the present invention, the reverse blowing type suction mechanism comprises a dust cover disposed on the top of the material box and communicating with the interior of the material box, a filter screen located between the dust cover and the material box, a transition connection portion integrally disposed on the top of the dust cover, and an exhaust fan disposed on the top of the transition connection portion; wherein

The dust cover is also connected with a back-blowing assembly.

In a preferred embodiment of the present invention, the blowback assembly includes a ring pipe connected to the transition joint, a pulse valve connected to the ring pipe via a connecting pipe, and a vent pipe connected to the pulse valve; wherein

And one end of the vent pipe, which is far away from the pulse valve, is also connected with an air storage tank.

By adopting the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a feeding system is carried to powder prevents stifled powder screw conveyer and is carrying out the in-process of carrying through the powder of auger blade in to the workbin, because tubulose bulk cargo pipe is greater than the auger blade for the external diameter of pay-off auger, consequently, tubulose bulk cargo pipe can form the effect of breaing up to the powder to prevent that the condition of gathering from appearing in the powder. In conclusion, the powder blocking phenomenon is reduced in the whole powder conveying and feeding system process, so that the smooth degree of powder conveying and feeding is improved, and the efficiency of powder conveying and feeding is improved.

Furthermore, the utility model discloses a high accuracy additive material weigher of powder conveying feeding system adopts flexonics between measurement scale fill and the feed cap, and also adopts flexonics's mode between the material pipe that leads to that links to each other with the measurement scale fill and the discharge tube, so, can avoid having debris to drop the measurement accuracy that influences the measurement scale fill when the feed cap at the in-process of measurement scale fill to adding the measurement material and carrying out the weighing.

Drawings

FIG. 1 is a schematic view of a powder conveying and feeding system according to embodiment 1 of the present invention;

fig. 2 is a schematic view of a first viewing angle of an anti-blocking powder screw conveyor of a powder conveying and feeding system according to embodiment 1 of the present invention;

fig. 3 is a schematic view of a second view angle of the anti-blocking powder screw conveyor of the powder conveying and feeding system of embodiment 1 of the present invention;

fig. 4 is a schematic view of a first viewing angle of auger blades and bulk materials of an anti-blocking powder screw conveyor of the powder conveying and feeding system of embodiment 1 of the present invention;

FIG. 5 is a schematic diagram of a second view angle of auger blades and bulk materials of an anti-blocking powder screw conveyor of the powder conveying and feeding system of embodiment 1 of the present invention;

fig. 6 is a schematic structural view of a feeding auger shaft of an anti-blocking powder screw conveyor of the powder conveying and feeding system of embodiment 2 of the present invention (in the figure, F shows the powder conveying direction);

fig. 7 is a schematic view of a high-precision additive weighing scale of a powder conveying and loading system according to embodiment 1 of the present invention;

fig. 8 is a second perspective view of the high precision additive dosage scale of the powder delivery loading system of example 1 of the present invention;

fig. 9 is a schematic structural view of a flexible joint of a high-precision additive metering scale of a powder conveying and loading system according to embodiment 1 of the present invention;

fig. 10 is a schematic view of a powder feeding machine of the powder conveying and feeding system according to embodiment 1 of the present invention;

fig. 11 is a second view structural diagram of a powder feeder of the powder conveying and feeding system according to embodiment 1 of the present invention;

fig. 12 is a third view structural diagram of a powder feeder of the powder conveying and feeding system according to embodiment 1 of the present invention.

In the figure: the device comprises a bin A, a large inner diameter part 1, a small inner diameter part 2, a feeding hole 3, a discharging pipe 5, a feeding auger shaft 6, auger blades 7, a tubular bulk material pipe 8, a supporting reinforcing rib 9, a power structure 10, an access door 11, a metering weighing hopper 21, a weight sensor 22, a feeding cover 23, a material passing pipe 25, a discharging pipe 26, a blanking hole 27, a first butterfly valve 28, a second butterfly valve 29, a sensor fixing plate 30, a bottom supporting ring 31, a fixing piece 32, a rubber buffer cushion 33, a supporting upright post 35, a supporting frame 36, a shock absorption cushion 37, a decorative protective cover 38, a bin 101, a hopper 102, an air inlet pipe 103, a feeding pipe 104, a discharging pipe 105, a feeding pipe 106, a control valve 107, a feeding hole 108, a dust cover 110, a transition joint part 111, a negative pressure generator 112, a connecting pipe 114.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

Example 1:

referring to fig. 1 to 12, the present embodiment provides a powder conveying and feeding system, which includes a raw material bin a, an anti-blocking powder screw conveyor connected to the raw material bin, a high-precision powder weigher connected to the anti-blocking powder screw conveyor through a first connecting pipe B, and a powder feeder connected to the high-precision powder weigher through a second connecting pipe C.

Stifled powder screw conveyer that prevents that this embodiment adopted includes: the material box comprises a feeding auger shaft 6, auger blades 7 and a bulk material part which are arranged in the material box.

Firstly, the material box comprises a large inner diameter part 1 and a small inner diameter part 2 which are communicated; wherein the inner diameter of the large inner diameter part 1 is larger than that of the small inner diameter part 2; wherein, a feed inlet 3 is arranged on the side wall of the large inner diameter part 1; the feed inlet 3 is positioned above the feeding auger shaft 6. A discharge pipe 5 is arranged on the side wall of the part of the small inner diameter part 2 far away from the large inner diameter part 1; the discharge pipe 5 is positioned below the feeding auger shaft 6. The large inner diameter portion 1 and the small inner diameter portion 2 may be integrally formed, or may be connected and fixed by flanges, which is not limited in this embodiment.

It should be noted that the tapping pipe 5 of the present embodiment has a structure with a large top and a small bottom, specifically, the inner diameter of the portion of the tapping pipe 5 directly connected to the small inner diameter portion 2 is larger than the inner diameter of the port of the tapping pipe 5 far from the small inner diameter portion 2, so that the significance of the design is to prevent the occurrence of the plugging phenomenon in the tapping pipe 5. Furthermore, the small inner diameter portion 2 may be provided with an access opening 12 adapted to be opened in correspondence with the side wall of the tapping pipe 5, so that even if a blockage occurs in the tapping pipe 5, this can be eliminated by the access opening 12.

The feed inlet 3 is arranged on the side wall of the large-inner-diameter part 1, the situation that the feed inlet 3 is blocked is mainly prevented, powder can be rapidly accumulated at the feed inlet 3 under the action of gravity of the powder in the process that the powder is fed into a feed box from the feed inlet 3, and the material bearing pressure of the feed inlet 3 can be relieved by enlarging the inner diameter of the part, corresponding to the feed inlet 3, of the feed box.

In the feeding auger shaft 6, the feeding auger shaft 6 of the present embodiment penetrates through the large inner diameter portion 1 and the small inner diameter portion 2, that is, one end of two axial ends of the feeding auger shaft 6 is rotatably fitted with the axial end of the small inner diameter portion 2, and the other end is rotatably fitted with the axial end of the large inner diameter portion 1. The auger shaft is provided with an auger blade 7, and the auger blade 7 is spirally wound on the feeding auger shaft 6 along the axial direction of the feeding auger shaft 6. The effect of conveying the powder from the large inner diameter part 1 to the small inner diameter part 2 gradually can be realized through the action of the auger blade 7 on the feeding auger shaft 6. For the present embodiment, the pitch of every two adjacent twisted pieces in the plurality of twisted pieces included in the auger blade 7 of the present embodiment is the same.

Finally, the bulk material piece is arranged in the large inner diameter part 1, and the bulk material piece comprises at least one tubular bulk material pipe 8 spirally surrounding the feeding auger shaft 6 along the axial direction of the feeding auger shaft 6; and the outer diameter of the tubular bulk pipe 8 relative to the feeding auger shaft 6 is larger than the outer diameter of the auger blade 7 relative to the feeding auger shaft 6. The number of the tubular scattering pipes 8 included in the specific scattering member herein may be determined according to the axial length of the large inner diameter portion 1, and when the axial length of the large inner diameter portion 1 is larger, the number of the required tubular scattering pipes 8 is also larger. In conjunction with the drawings of the present embodiment, the present embodiment takes two tubular bulk material pipes 8 as an example. It should be noted that the outer diameter of the tubular bulk pipe 8 relative to the feeding auger shaft 6 for this embodiment is at least twice the outer diameter of the auger blade 7 relative to the feeding auger shaft 6.

In detail, an interval suitable for powder to pass is formed between the tubular bulk pipe 8 and the feeding auger shaft 6, that is, the tubular bulk pipe 8 of the embodiment is also wound on the feeding auger shaft 6 according to a spiral structure, different from the auger blade 7, the tubular bulk material pipe 8 is not in direct contact with the feeding auger shaft 6, but an interval through which powder can pass is formed between the tubular bulk pipe and the feeding auger shaft, the outer diameter of the tubular bulk pipe 8 relative to the feeding auger shaft 6 is larger than the outer diameter of the auger blade 7 relative to the feeding auger shaft 6, the outer diameter of the tubular bulk pipe 8 relative to the feeding auger shaft 6 is determined according to the inner diameter of the large inner diameter part 1, the effect of making through tubulose bulk material pipe 8 can play the effect of breaing up the powder that drops into in the major diameter portion 1 through feed inlet 3, prevents that the powder from gathering the phenomenon that hardens in major diameter portion 1.

It should be noted that, for the two tubular bulk material pipes 8 of the present embodiment, the outer diameters of the two tubular bulk material pipes 8 relative to the feeding auger shaft 6 may be the same or different, and the specific embodiment is not limited in any way. The figures of the embodiment only show the case that the outer diameters of the two tubular bulk pipes 8 relative to the feeding auger shaft 6 are the same.

It should be noted that, for the two tubular bulk material pipes 8 of the present embodiment, the spiral directions of the two tubular bulk material pipes 8 relative to the feeding auger shaft 6 may be the same or opposite, and this embodiment is not limited in any way. In an optional situation of this embodiment, in combination with the attached drawings, the spiral directions of the two tubular bulk material pipes 8 relative to the feeding auger shaft 6 are opposite, so that the scattering effect of the powder in the large inner diameter portion 1 can be enhanced, and the scattering of the powder can be completely realized through a positive-negative matching structure.

Because the tubular bulk pipe 8 of the embodiment is not directly connected with the feeding auger shaft 6, but an interval through which the powder can pass is formed between the tubular bulk pipe and the feeding auger shaft, the structure of the embodiment is realized by the following modes: the specific tubular bulk material pipe 8 is connected with the feeding auger shaft 6 through a plurality of supporting reinforcing ribs 9, wherein the plurality of supporting reinforcing ribs 9 at least comprise two supporting reinforcing ribs 9 connected with two end parts of the tubular bulk material pipe 8 and further comprise the supporting reinforcing ribs 9 connected in the middle of the tubular bulk material pipe 8, namely, the supporting reinforcing ribs 9 of the embodiment not only have the function of realizing the connection between the tubular bulk material pipe 8 and the feeding auger shaft 6, but also have the function of effectively ensuring the use strength of the tubular bulk material pipe 8 in the process of scattering powder.

In addition, the side wall of the large inner diameter portion 1 is provided with an access door 11 suitable for opening, and the access door 11 can be used for examining and repairing the tubular bulk material pipe 8 in the large inner diameter portion 1.

It should be further noted that the powder conveying and feeding system of the embodiment further includes a power structure 10 disposed outside the bin and adapted to drive the feeding auger shaft 6 to rotate. The power structure 10 can select a motor and a speed reduction assembly connected with the motor, namely, the rotation of the feeding auger shaft 6 is realized through the power structure 10, the auger blades 7 and the tubular material scattering pipe 8 are synchronously driven to synchronously rotate in the rotation process of the feeding auger shaft 6, the feeding effect of powder is realized by the auger blades 7, and the scattering effect of the powder at the part of the feeding port 3 is realized by the tubular material scattering pipe 8.

A high precision additive dosage scale comprising: the weighing system comprises a weighing scale bucket 21, at least two weight sensors 22 arranged on the outer side wall of the weighing scale bucket 21, a feeding cover 23 flexibly connected with a blanking port 27 of the weighing scale bucket 21, and a material passing pipe 25 connected with a discharging port of the weighing scale bucket 21; wherein the end of the material passing pipe 25 far away from the measuring scale bucket 21 is flexibly connected with a discharging pipe 26. The feed line 25 is here connected to the weighing scale 21 in such a way that an integral construction is formed between the feed line 25 and the weighing scale 21.

The weight sensors 22 of the present embodiment may be provided in three or more numbers, and in conjunction with the drawings of the present embodiment, three weight sensors 22 uniformly provided around the outer side wall of the weighing scale bucket 21 are taken as an example.

It should be noted that the feeding cover 23 is provided with a feeding through hole 39 adapted to communicate with the blanking port 27 of the weighing hopper 21, and the additive to be weighed enters the weighing hopper 21 through the feeding through hole 39. The feed-through opening 39 is connected to the discharge pipe 5 via the first connection pipe B.

In addition, it should be further noted that the material passing pipe 25 is also connected with a first butterfly valve 28; and the discharge tube 26 is also fitted with a second butterfly valve 29. The first butterfly valve 28 is connected in the material passing pipe 25; and the second butterfly valve 29 that the discharge tube 26 connects, the cooperation of two butterfly valves forms the interval of a relative isolation, so can form prevent in the dry powder mortar production line with the utility model discloses an air current that probably produces influences the measurement precision of measurement scale bucket 21 in the powder material loading machine that measurement scale bucket 21 links to each other.

In detail, the outer side wall of the weighing scale bucket 21 is fixedly provided with a sensor fixing plate 30 with an annular structure; and at least two weight sensors 22 are each provided on a lower end surface of the sensor fixing plate 30. A bottom support ring 31 with an annular structure is further arranged below the two weight sensors 22 and around the circumferential outer side of the weighing scale bucket 21; the end face of the bottom support ring 31 facing the weight sensors 22 is provided with fixing pieces 32 corresponding to at least two weight sensors 22 one by one; a rubber cushion 33 is provided between the weight sensor 22 and the fixing piece 32. The influence of the vibrations of the bottom support ring 31 on the use of the weight sensor 22 can be reduced by the rubber cushion 33.

In addition, it should be noted that the high-precision additive metering scale further includes a plurality of support columns 35 vertically and fixedly connected with the circumferential side wall of the feeding cover 23; and on each support upright 35 there is also a support 36 suitable for supporting the bottom support ring 31; a shock pad 37 is also provided between the bottom support ring 31 and the support bracket 36. Here, the vibration of the support column 35 caused by the shock absorbing pad 37 may not directly cause the vibration of the bottom support ring 31, thereby reducing the influence of the vibration of the support column 35 on the use of the weight sensor 22.

Alternatively to the flexible connection of the present exemplary embodiment, the discharge opening 27 of the weighing hopper 21 is connected to the feed cover 23 by means of a flexible cloth or a flexible plastic. The end of the material feed pipe 25 remote from the measuring scale hopper 21 is connected to the discharge pipe 26 by means of a flexible cloth 40 or a flexible plastic. The flexible connection is adapted in such a way that the measuring scale bucket 21 can form a relatively independent measuring environment which is not easily affected by the states of the feed cover 23 and the discharge tube 26, in particular for impurities which may fall onto the feed cover 23, the measuring accuracy of the measuring scale bucket 21 is not easily directly affected by the flexible connection between the feed cover 23 and the measuring scale bucket 21. It should be noted that, in the flexible connection between the weighing scale bucket 21 and the feeding cover 23 and the flexible connection between the material feeding pipe 25 and the material discharging pipe 26 connected to the weighing scale bucket 21 of the present embodiment, a decorative protective cover 38 may be disposed on the circumferential outer side of the flexible connection, and specifically, the decorative protective cover 38 may be fixed on the supporting column 35, so that the decorative protective cover 38 does not need to be directly coupled to the weighing scale bucket 21, and the arrangement of the decorative protective cover 38 is not affected, which affects the metering accuracy of the weighing scale bucket 21.

In a further alternative embodiment, a wind shield is further provided outside the support column 35, and the wind shield mainly prevents the air flow in the environment from affecting the measurement accuracy of the weighing scale 21 of this embodiment.

The powder material loading machine of this embodiment of saying again includes: a hopper 101, and hoppers 102 connected to the hopper 101 through a feed pipe 104, respectively; the side wall of the feed box 101 is also provided with an air inlet pipe 103; a discharge pipe 105 is also provided at the lower end of the hopper 101.

More specifically, a feeding pipe 106 adapted to be connected with the conveying pipe 104 in a matching manner is arranged on the side wall of the feed box 101; and a control valve 107 adapted to control the opening and closing of the feed pipe 106 is provided at the mating portion of the feed pipe 104 and the feed pipe 106. The loudness independent control of the powder transportation between the hoppers 102 and the bins 101 can be performed through the control valves 107, that is, only one powder transportation process between one hopper 102 and one bin 101 can be started each time, or the powder transportation processes between the hoppers 102 and the bins 101 can be started in sequence, which is not absolutely limited in this embodiment, that is, when the powder transportation process between each hopper 102 and one bin 101 needs to be controlled individually, the loudness independent control can be performed through the corresponding control valve 107.

It should be noted that a back-blowing suction mechanism is also provided at the top of the material box 101.

In an alternative implementation case, referring to the drawings of the present embodiment, the back-blowing type suction mechanism includes a dust cover 110 disposed on the top of the bin 101 and penetrating through the bin 101, a filter (not shown) disposed between the dust cover 110 and the bin 101, a transition joint 111 integrally disposed on the top of the dust cover 110, and a negative pressure generator 112 disposed on the top of the transition joint 111, wherein the negative pressure generator 112 is adapted to penetrate through the bin 101 through the transition joint 111 to form a vacuum environment for the bin 101. Wherein the dust cover 110 is further connected with a blowback assembly. In the embodiment, the negative pressure generator 112 is used for forming the material box 1 into a vacuum box body, and the structure of the vacuum box body can realize the purpose of sucking materials from the hopper 102 under the condition of negative pressure in a vacuum mode, so that powder in the hopper 102 can efficiently enter the material box 101.

Before the powder in the hopper 2 is sucked each time, the bin 101 needs to form a vacuum box environment to generate a negative pressure absorption effect on the powder in the hopper 102, and after the powder in the hopper 102 is absorbed each time, in consideration of the vacuumizing process of the bin 101 before the powder in the next hopper 102 enters the bin 101, the powder attached to the inner wall of the bin 101 is prevented from entering the negative pressure generator 112, the filter screen is arranged in the embodiment, so that the vacuum environment in the bin 101 can be formed under the action of the negative pressure generator 112, and no powder enters the negative pressure generator 112. Optionally, the negative pressure generator 112 in this embodiment may also be replaced by an exhaust fan, that is, the use requirement of this embodiment can be met as long as the negative pressure environment of the material box 101 can be formed.

After a period of use, a certain amount of powder may be attached to the screen, so that the powder attached to the screen may be discharged from the hopper 101, taking into account the need to clean the screen. This embodiment achieves the above-mentioned object through the blowback assembly.

In detail, the blowback assembly includes a ring pipe (not shown) coupled to the transition joint 111 in a penetrating manner (i.e., the ring pipe is built into the transition joint pipe), a pulse valve 113 connected to the ring pipe through a connection pipe 114, and a vent pipe 115 connected to the pulse valve 113; an air storage tank (not shown) is connected to the end of the air pipe 115 far away from the pulse valve 113. The blowback assembly is started to release the pulse airflow to blow the powder adsorbed on the filter screen back into the bin 101 so that the powder passes through the discharge pipe 105 of the bin 101 under the action of the pulse airflow and finally enters the powder externally-connected conveying pipe. After the above process is completed, the bin 101 is vacuumized to form a vacuum environment in the bin 101.

In addition, the discharging pipe 105 of this embodiment is connected to a powder externally-connected conveying pipe, and the butt joint between the powder feeding machine of this embodiment and the next processing procedure of powder is realized through the powder externally-connected conveying pipe.

In addition, the hopper 102 of the present embodiment is provided with a feeding port 108, and the feeding port 108 is connected to the discharging pipe in a matching manner through the second connecting pipe C. In the case of the feed conveyor 104, it is alternatively possible that the feed conveyor 104 has an inclined duct structure which is inclined with respect to the horizontal plane. In an alternative embodiment, the feed delivery pipe 104 is a straight pipe structure arranged parallel to the horizontal plane. Therefore, the present embodiment is not limited to the specific pipe condition of the feed delivery pipe 104 with respect to the horizontal plane.

The concrete implementation principle of the powder material loading machine has been adopted in this embodiment as follows:

the vacuum environment in the bin 101 is achieved by the negative pressure generator 112, and the hopper 102 sucks the powder in the hopper 102 into the bin 101 through the material conveying pipe 104 between the hopper 102 and the bin 101. After all the powder in the hopper 102 enters the material box 101, gas is introduced into the material box 101 through the gas inlet pipe 103, so that the powder in the material box 101 can naturally pass through the discharge pipe 105 of the material box 101 and finally enter the powder externally-connected conveying pipe, and thus, the processes of feeding and outputting the powder in the hopper 102 are completed.

Example 2:

referring to fig. 6, on the basis of the powder conveying and feeding system of embodiment 1, the powder conveying and feeding system provided in this embodiment has the same structure as that of the powder conveying and feeding system of embodiment 1, and the difference is that the distance between every two adjacent twisted pieces in the plurality of twisted pieces included in the auger blade 7 of this embodiment gradually increases along the direction from the large inner diameter portion 1 to the small inner diameter portion 2.

Specifically, the feed inlet 3 is disposed on the side wall of the large inner diameter portion 1, and the discharge outlet 5 is disposed on the side wall of the portion of the small inner diameter portion 2 away from the large inner diameter portion 1, so that the distance between every two adjacent twisted pieces in the plurality of twisted pieces included in the auger blade 7 of the present embodiment gradually increases from the feed inlet 3 toward the discharge outlet 5. The reason of design like this lies in, auger blade 7 is close to 3 partial hank piece intervals of feed inlet and sets up more densely, and such benefit lies in that the feeding speed is fast can be carried the powder to 5 directions of discharging pipe to certain extent prevents to appear stifled powder phenomenon in 3 parts of feed inlet. And the spacing of the twisted pieces of the part of the auger blade 7 between the feeding port 3 and the discharging pipe 5 is moderate, so that the stable feeding effect can be realized. At last, the distance between the twisted pieces of the part, close to the discharging pipe 5, of the auger blade 7 is relatively large, the discharging speed can be reduced at the moment, the discharging is uniform, and the use stability of the subsequent butt joint processing procedure of the discharging pipe 5 is improved.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements 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.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims (10)

1. A powder conveying and feeding system is characterized by comprising: former feed bin, with former feed bin accepts continuous stifled powder screw conveyer, accepts continuous high accuracy powder weigher through first connecting pipe and stifled powder screw conveyer to and accept continuous powder material loading machine through second connecting pipe and high accuracy powder weigher.

2. The powder conveying and feeding system of claim 1, wherein the anti-blocking powder screw conveyor comprises:

the work bin comprises a large inner diameter part and a small inner diameter part which are communicated with each other; wherein the inner diameter of the large inner diameter part is larger than that of the small inner diameter part;

the feeding auger shaft penetrates through the large inner diameter part and the small inner diameter part;

the auger blade spirally surrounds the feeding auger shaft along the axial direction of the feeding auger shaft;

the bulk cargo part is arranged in the large inner diameter part and comprises at least one tubular bulk cargo pipe spirally surrounding the feeding auger shaft along the axial direction of the feeding auger shaft; and the outer diameter of the tubular bulk material pipe relative to the feeding auger is larger than the outer diameter of the auger blade relative to the feeding auger.

3. The system for conveying and feeding the powder lot as claimed in claim 2, wherein an area suitable for the powder lot to pass through is formed between the tubular bulk material pipe and the feeding auger shaft.

4. The system for conveying and feeding the powder lot as claimed in claim 3, wherein the tubular bulk material pipe is connected with the feeding auger shaft through a plurality of supporting reinforcing ribs.

5. The powder conveying and feeding system according to any one of claims 2 to 4, wherein a feed inlet is formed in a side wall of the large inner diameter part; the feeding port is positioned above the feeding auger shaft;

a discharge pipe is arranged on the side wall of the part of the small inner diameter part far away from the large inner diameter part; the discharge pipe is positioned below the feeding auger shaft.

6. The powder transport loading system of claim 5, wherein the high precision powder weigher comprises: the weighing system comprises a weighing scale bucket, at least two weight sensors arranged on the outer side wall of the weighing scale bucket, a feeding cover flexibly connected with a blanking port of the weighing scale bucket, and a material passing pipe connected with a discharging port of the weighing scale bucket; wherein

One end of the material passing pipe, which is far away from the measuring scale bucket, is flexibly connected with a discharging pipe;

the feeding cover is connected with the discharging pipe in a matching mode through the first connecting pipe.

7. The powder conveying and feeding system of claim 6, wherein the material passing pipe is further connected with a first butterfly valve; and

the discharge pipe is also connected with a second butterfly valve in a matching mode.

8. The powder transport feeding system of claim 6, wherein the powder feeder comprises: the device comprises a material box and hoppers which are respectively connected with the material box through a material conveying pipe; wherein

The side wall of the feed box is also provided with an air inlet pipe; the lower end of the material box is also provided with a material discharging pipe; and

the top of the material box is also provided with a back-blowing type air suction mechanism;

the hopper is connected with the discharge pipe in a matching mode through the second connecting pipe.

9. The powder conveying and feeding system of claim 8, wherein the reverse blowing type air suction mechanism comprises a dust cover arranged at the top of the bin and communicated with the interior of the bin, a filter screen arranged between the dust cover and the bin, a transition joint part integrally arranged at the top of the dust cover, and an exhaust fan arranged at the top of the transition joint part; wherein

The dust cover is also connected with a back-blowing assembly.

10. The powder conveying and feeding system of claim 9, wherein the blowback assembly comprises an annular pipe in through connection with the transition joint, a pulse valve connected with the annular pipe through a connecting pipe, and a vent pipe connected with the pulse valve; wherein

And one end of the vent pipe, which is far away from the pulse valve, is also connected with an air storage tank.

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