CN210480203U - Continuous feeding device of metal powder - Google Patents
Continuous feeding device of metal powder Download PDFInfo
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- CN210480203U CN210480203U CN201921268690.3U CN201921268690U CN210480203U CN 210480203 U CN210480203 U CN 210480203U CN 201921268690 U CN201921268690 U CN 201921268690U CN 210480203 U CN210480203 U CN 210480203U
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- injection pipeline
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Abstract
The utility model provides a metal powder continuous feeding device, which comprises a Venturi powder pump and a storage bin with a capping structure, wherein a micropore fluidization plate for fluidizing metal powder is arranged in a conical part at the lower end of the storage bin; the venturi powder pump is provided with an injection pipeline which extends into the storage bin and extends to the upper part of the micropore fluidization plate; the venturi powder pump is provided with an injection gas inlet and a discharge hole. The utility model discloses create the feeding device that provides, only need very little suction just can be with the metal powder that is fluidization state not inhale the discharger to with draw and penetrate the air current and mix the back and discharge from the export, along with adjusting conveying gas's flow, can be controllable in succession add the target position with metal powder according to required speed, feeding process is very safe moreover.
Description
Technical Field
The invention belongs to the technical field of metal powder feeding equipment, and particularly relates to a metal powder continuous feeding device.
Background
In industrial production, particularly in chemical production, the situation that metal powder does not need to be uniformly added is often encountered, for example, in the chemical reaction using metal aluminum powder as a reducing agent, the aluminum powder needs to be continuously added in a slow and controllable manner. If the hydrogen is added in a large amount, violent reaction can be caused, a large amount of hydrogen is generated to cause material flushing accidents, and explosion can be caused seriously. In the occasion, the manual feeding mode is still commonly adopted at present, and the powder material is not closed, so that the manual feeding has great harm to operators, and particularly, the toxic volatile powder is easy to cause serious occupational diseases. In practical application, an auger feeding mode is adopted, and due to the fact that friction exists between the shaft and the cavity, heat is easily generated and is easily conducted to metal powder which is not burnt, and safety hidden danger is also brought. The nitrogen flow conveying mode is usually only applied to metal powder manufacturing enterprises, is mainly used for conveying and packaging large-batch metal powder, and is not suitable for the occasions of small and medium flow continuous feeding in chemical production.
Disclosure of Invention
In view of this, the present invention provides a continuous feeding device for metal powder, which is used to overcome the problems in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a continuous feeding device for metal powder comprises:
the top sealing structure is arranged on the bin, the bottom of the bin is communicated with the fluidizing gas inlet, the lower end of the bin is provided with a conical collecting cavity, and the bottom of the collecting cavity is provided with a microporous fluidizing plate corresponding to the fluidizing gas inlet;
the injection pipeline extends to the upper part of the microporous fluidization plate from the outside of the storage bin, a material suction port is arranged on the part, located in the storage bin, of the injection pipeline, corresponding to the microporous fluidization plate, and a feeding gap is reserved between the material suction port and the microporous fluidization plate;
the discharger is provided with one end of the injection pipeline, which is positioned outside the storage bin, and is communicated with the injection pipeline; the upper end of the discharging device is provided with a nozzle along the axial direction of the discharging device, and the lower end of the discharging device is provided with a Venturi tube corresponding to the nozzle.
Furthermore, the capping structure adopts a detachable top cover, and a cover opening screw is arranged on the top cover.
Furthermore, an exhaust port is arranged on the capping structure.
Furthermore, the feeding gap between the material suction port of the injection pipeline and the upper end surface of the micropore fluidization plate is 5-100 mm.
Furthermore, the end of the injection pipeline corresponding to the micropore fluidization plate is provided with a material suction port, the lower end opening of the material suction port is large, and the upper end opening is small.
Further, draw and penetrate the pipeline and include vertical portion and horizontal part, the discharger is perpendicular to draws the horizontal part that penetrates the pipeline.
Furthermore, the bottom of the storage bin is connected with the fluidizing gas inlet through a flange, the micropore fluidizing plate is fixedly pressed between flanges of the storage bin and the fluidizing gas inlet, and gaskets which form sealing with corresponding side flanges are respectively arranged on two sides of the micropore fluidizing plate.
Compared with the prior art, the invention has the following advantages:
the invention only needs small suction force to suck the metal powder in a fluidized state into the discharging device, and the metal powder is mixed with the injection airflow and then discharged from the outlet, and the adding speed of the metal powder can be continuously adjusted along with the adjustment of the flow of the conveying gas. Therefore, the metal powder can be continuously and controllably fed into the target position at the required speed, and the feeding process is very safe.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of a portion of a microporous fluidization plate in an inventive embodiment of the present invention;
fig. 3 is a schematic structural diagram of a discharging device in the inventive embodiment of the present invention.
Description of reference numerals: 1-capping structure; 2-a storage bin; 3-fluidizing gas inlet; 4-a material collecting cavity; 5-a microporous fluidization plate; 6-an injection pipeline; 7-material sucking port; 8-a feed gap; 9-a discharger; 10-a nozzle; 11-a venturi tube; 12-cap opening screws; 13-an exhaust port; 14-a storage chamber for fluidizing gas; 15-a flange; 16-a gasket; 17-connecting pipe.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
A continuous feeding device of metal powder, as shown in fig. 1 to 3, comprising:
a storage bin 2 provided with a capping structure 1, the bottom of the storage bin is communicated with a fluidizing gas inlet 3; the lower end of the bin is provided with a conical material collecting cavity 4, and the bottom of the material collecting cavity is provided with a micropore fluidization plate 5 corresponding to a fluidization gas inlet;
the injection pipeline 6 extends to the upper part of the microporous fluidization plate from the outside of the storage bin, the part of the injection pipeline, which is positioned in the storage bin, is provided with a material suction port 7 corresponding to the microporous fluidization plate, and a feeding gap 8 is reserved between the material suction port and the microporous fluidization plate;
the discharger 9 is provided with an injection pipeline at one end outside the storage bin, and the side wall of the discharger is communicated with the injection pipeline; the upper end of the discharging device is provided with a nozzle 10 along the axial direction, and the lower end of the discharging device is provided with a Venturi tube 11 corresponding to the nozzle. When the actual pipeline is arranged, the injection pipeline can penetrate out of the side wall of the aggregate cavity, the total stroke is short, the pressure loss is small, the friction chance between powder and the inner wall of the pipeline is reduced, and the stability of feeding is easy to realize.
It should be noted that although the patent document 201620240521.9 discloses a device for conveying guar gum through venturi tube, which utilizes high-speed air flow in venturi tube to convey and disperse guar gum, the venturi tube is transversely arranged, and an elbow must be arranged at the outlet to convey the guar gum to the target position, if the hardness of the carried material is high, the high-speed air flow is equivalent to a "water knife", which will generate very strong cutting force to the elbow of the outlet, so that the device can only convey "soft" material such as guar gum, and is not suitable for continuous conveying of metal powder. The invention is mainly applied to the split continuous charging of aluminum powder, iron powder and other metals.
The metal powder has high specific gravity, and the venturi powder pump is difficult to absorb the metal powder with high specific gravity into the powder pump when the venturi powder pump is singly adopted in the feeding process. The feeding device provided by the invention is characterized in that metal powder is blown to a suspension state (a fluidized state) by using inert gas flow, and the metal powder in the fluidized state can be sucked into a powder pump cavity (a discharging device) by only small suction force and is discharged from an outlet after being mixed with injection gas flow. The discharging device is also vertically arranged, so that the discharging hole is partially vertical, and the metal powder with high specific gravity can be smoothly conveyed to a target position.
The capping structure adopts a detachable top cover, and a cover opening screw 12 is arranged on the top cover, so that the capping structure can be conveniently opened. In addition, an exhaust port 13 is arranged on the capping structure, a check valve can be installed at the exhaust port, and when the internal pressure is too high, the pressure can be actively relieved.
The feeding gap between the material suction port of the injection pipeline and the upper end surface of the micropore fluidization plate is 5-100 mm. The preferable range is 50-60mm, the feeding gap has direct influence on feeding, the feeding efficiency is influenced by too small gap, and the powder is easy to blow out by too large gap which needs great fluidizing gas velocity.
The end of the injection pipeline corresponding to the micropore fluidization plate is provided with a material suction port 14 which is in a horn mouth shape, the lower end opening of the material suction port is large, and the upper end opening of the material suction port is small. It should be noted that the lowest end (maximum caliber) of the material suction port is preferably consistent with the size of the fluidization area, so that the balance of fluidization and feeding can be ensured to the maximum extent, the energy waste is reduced, and the continuous and stable feeding process is also maintained. The term "fluidization region" as used herein is generally understood to mean the region of the microporous fluidization plate which is capable of participating in effective fluidization.
The ejection pipeline comprises a vertical part and a horizontal part, the discharger is perpendicular to the horizontal part of the ejection pipeline, the discharger and the horizontal part are perpendicular to each other, the airflow passing through the discharger can form a cutting-like effect on the gas in the ejection pipeline, and a stable negative pressure forming state can be formed at the discharger. In an alternative embodiment, for convenience of assembly, a connecting pipe 17 may be vertically arranged on one side of the discharging device, and the tail end of the connecting pipe is connected with the injection pipeline through a flange.
The bottom of the bin is connected with the fluidizing gas inlet through a flange 15, the microporous fluidizing plate is fixedly pressed between flanges of the bin and the fluidizing gas inlet, and gaskets 16 which form sealing with corresponding side flanges are respectively arranged on two sides of the microporous fluidizing plate so as to prevent powder from leaking. The gasket can be made of soft sealing materials such as rubber, polytetrafluoroethylene and the like.
In an alternative embodiment, a fluidizing gas storage chamber 17 may be provided between the fluidizing gas inlet and the microporous fluidizing plate, where more fluidizing gas is collected and permeates through the microporous fluidizing plate to achieve better fluidizing effect. The micropore fluidization plate is made of a commercially available product, is generally made of sintered plastics, and is provided with tiny holes through which fluid such as gas, water and the like can pass but tiny powder cannot penetrate.
When using, open the capping structure earlier, disposable required metal powder that adds, the protective gas who is used for the fluidization is let in from feed bin bottom fluidization gas entrance (like nitrogen gas), let in nitrogen gas from the nozzle again, the flow of nitrogen gas can be adjusted through setting up the governing valve, when nitrogen gas stream process discharger, form the negative pressure in the inside cavity of discharger, will be through the metal powder who draws the efflux pipeline through the fluidization and inhaled the discharger in succession, carry over venturi by nitrogen gas stream again, spout and go out through venturi, reinforced to the target location.
It should be noted that the above-mentioned operation is directed to the embodiment that the capping structure is a top cap, and in the actual production, the capping structure may also be a non-openable structure as long as the material can be smoothly added, and the specific structure is not limited herein.
It should be noted that the metal powder feeding rate can be continuously adjusted by adjusting the flow rate of the nitrogen gas to be fed. Since the metal powder is always protected by the protective gas, the gas for transportation is also an inert gas such as nitrogen, and the continuous nitrogen flow can prevent the metal powder from accumulating in the tube cavity. The sizes of the discharging device, the venturi tube and the storage bin can be selected or designed according to the process requirements.
When the airflow passes through the discharging device, negative pressure is formed in the cavity in the discharging device, the fluidized metal powder is continuously sucked into the discharging device through the injection pipeline, and then is sent to the Venturi tube by the airflow and is ejected out through the Venturi tube. The metal powder addition rate can be continuously adjusted with the adjustment of the nitrogen gas flow rate. Therefore, the metal powder can be continuously and controllably fed into the target position at the required speed, and the feeding process is very safe.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a metal powder continuous feeding device which characterized in that includes:
the device comprises a storage bin, a top sealing structure, a conical collecting cavity and a microporous fluidization plate, wherein the storage bin is provided with the top sealing structure, the bottom of the storage bin is communicated with a fluidization gas inlet, the lower end of the storage bin is provided with the conical collecting cavity, and the bottom of the collecting cavity is provided with the microporous fluidization plate corresponding to the fluidization gas inlet;
the injection pipeline extends to the upper part of the microporous fluidization plate from the outside of the storage bin, a material suction port is arranged on the part, located in the storage bin, of the injection pipeline, corresponding to the microporous fluidization plate, and a feeding gap is reserved between the material suction port and the microporous fluidization plate;
the discharger is arranged at one end of the injection pipeline, which is positioned outside the storage bin, and is communicated with the injection pipeline; the upper end of the discharging device is provided with a nozzle along the axial direction of the discharging device, and the lower end of the discharging device is provided with a Venturi tube corresponding to the nozzle.
2. The continuous feeding device of metal powder according to claim 1, characterized in that: the capping structure adopts a detachable top cover, and a cover opening screw is arranged on the top cover.
3. The continuous feeding device of metal powder according to claim 1, characterized in that: and the capping structure is provided with an exhaust port.
4. The continuous feeding device of metal powder according to claim 1, characterized in that: the feeding gap between the material suction port of the injection pipeline and the upper end surface of the micropore fluidization plate is 5-100 mm.
5. The continuous feeding device of metal powder according to claim 1, characterized in that: the injection pipeline is provided with a material suction port corresponding to one end of the micropore fluidization plate, the lower end of the material suction port is provided with a large opening, and the upper end of the material suction port is provided with a small opening.
6. The continuous feeding device of metal powder according to claim 1, characterized in that: the injection pipeline comprises a vertical part and a horizontal part, and the discharger is perpendicular to the horizontal part of the injection pipeline.
7. The continuous feeding device of metal powder according to claim 1, characterized in that: the bottom of the storage bin is connected with the fluidizing gas inlet through a flange, the micropore fluidizing plate is fixedly pressed between flanges of the storage bin and the fluidizing gas inlet, and gaskets which form sealing with corresponding side flanges are respectively arranged on two sides of the micropore fluidizing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921268690.3U CN210480203U (en) | 2019-08-07 | 2019-08-07 | Continuous feeding device of metal powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921268690.3U CN210480203U (en) | 2019-08-07 | 2019-08-07 | Continuous feeding device of metal powder |
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| CN210480203U true CN210480203U (en) | 2020-05-08 |
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| CN201921268690.3U Active CN210480203U (en) | 2019-08-07 | 2019-08-07 | Continuous feeding device of metal powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113104591A (en) * | 2021-04-06 | 2021-07-13 | 吕明杰 | Powder material pumping machine and pumping method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113104591A (en) * | 2021-04-06 | 2021-07-13 | 吕明杰 | Powder material pumping machine and pumping method |
| CN113104591B (en) * | 2021-04-06 | 2022-09-02 | 吕明杰 | Powder material pumping machine and pumping method |
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