CN211056197U - Powder blanking device for discontinuous pneumatic conveying - Google Patents
Powder blanking device for discontinuous pneumatic conveying Download PDFInfo
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- CN211056197U CN211056197U CN201921657217.4U CN201921657217U CN211056197U CN 211056197 U CN211056197 U CN 211056197U CN 201921657217 U CN201921657217 U CN 201921657217U CN 211056197 U CN211056197 U CN 211056197U
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Abstract
The utility model discloses a powder blanking device for discontinuous pneumatic conveying, which is provided with a front air supply pipe and a rear air supply pipe. The front air supplement pipe is inserted into the blanking device and extends into the conveying pipe; the front air supply pipe comprises an outer pipe sleeve and an inner pipe, a first sliding sealing element is arranged between the outer pipe sleeve and the inner pipe, and a second sliding sealing element is arranged between the outer pipe sleeve and the conveying pipe; the outer sleeve and the inner pipe, and the outer sleeve and the conveying pipe can slide relatively; the surface of the inner pipe is provided with a plurality of air holes which are arranged into a ring shape firstly and then into a plurality of rings; the outer sleeve covers 1 ring or a plurality of rings of the air holes when sliding relative to the inner pipe. Through the structural innovation, the air-supplementing anti-blocking effect of the blanking device is further improved; can be more suitable for the requirement of discontinuous pneumatic transmission.
Description
Technical Field
The utility model belongs to the technical field of powder material conveyor, especially a powder unloader for discontinuous pneumatic conveying.
Background
Although the conventional powder blanking device is provided with the air supply device in a conveying pipeline, the conventional powder blanking device has a single structure and cannot play an air supply role, or the air supply device is unreasonable in design and cannot realize multiple adjusting functions, so that the blanking end cannot be effectively prevented from being blocked, and the production continuity and the production efficiency are seriously influenced. This is even more the case in discontinuous transport. In addition, once the blanking end is blocked, the blanking end can not be linked with upstream and downstream equipment, so that an alarm can be given out in time or the pneumatic conveying system can be automatically shut down, and the whole pneumatic conveying system is blocked.
Among the prior art, for example, patent CN201120237492.8 provides a material suction device for powder conveying, through setting up the air supplement pipe and stretch and slide in the horizontal straight pipe to can the axial rotation, adjust and can adjust the mixing percentage of powder and gas, make the difficult putty of powder transportation process, thereby avoid blockking up air supplement mouth and pipeline. The device can not realize discontinuous delivery of powder and particle materials, once the delivery is stopped at a certain moment, the whole horizontal straight pipe is fully distributed with the powder and particle materials, and the powder and particle materials can not be rapidly delivered again only under the action of 1 air supplementing pipe.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a powder unloader for discontinuous pneumatic transmission, which is realized by the following technical scheme.
A powder blanking device for discontinuous pneumatic conveying comprises a blanking hopper and a blanking device from top to bottom, wherein the blanking hopper is rotatably and movably connected with the blanking device, the blanking device is connected with a conveying pipe, the powder blanking device further comprises a front air supplement pipe and a rear air supplement pipe, the rear air supplement pipe is arranged on one side of the conveying pipe, the front air supplement pipe is inserted into the blanking device and extends into the conveying pipe, the pipe diameter of one end, close to the blanking device, of the conveying pipe is larger than that of one end, close to the rear air supplement pipe, of the conveying pipe, and the front air supplement pipe and the conveying pipe are located on the same axis line; the front air supply pipe comprises an outer pipe sleeve and an inner pipe, a first sliding sealing piece is arranged between the outer pipe sleeve and the inner pipe, and a second sliding sealing piece is arranged between the outer pipe sleeve and the conveying pipe; the outer pipe sleeve and the inner pipe as well as the outer pipe sleeve and the conveying pipe can slide relatively; the surface of the inner pipe is provided with a plurality of air holes which are arranged into a ring shape firstly and then into a plurality of rings; the outer pipe sleeve covers 1 ring or a plurality of rings of the air holes when sliding relative to the inner pipe.
As a traditional structure, an adjusting valve and a filter can be arranged on the front air supplementing pipe and used for controlling the air flow rate and ensuring the air cleanness. The lower feeder and the lower hopper can rotate mutually, and the specific connection mode is the prior conventional technology (such as 201621060398.9), so that the arbitrary adjustment of the conveying direction is realized. The feeder, the first sliding sealing element and the second sliding sealing element are all common mechanisms or parts in the market, for example, the first sliding sealing element and the second sliding sealing element can be annular rubber sealing rings, and any other parts capable of achieving the sliding sealing effect can also be adopted. The use principle of the blanking device is that powder and particle materials enter a conveying pipe from a blanking hopper and a blanking device, the tail end of the conveying pipe is connected with a common vacuum conveyor, negative pressure or vacuum is formed in the conveying pipe, the conveying of the materials in the conveying pipe is realized, and outside air is sucked into the conveying pipe through a front air supply pipe and a rear air supply pipe. The outer sleeve of the front air supply pipe slides relative to the conveying pipe so as to adjust the length of the front air supply pipe penetrating into the conveying pipe, and the material blocked in the conveying pipe is blown away conveniently; when the outer pipe sleeve and the inner pipe are overlapped in a sliding mode, the air holes in the surface of the inner pipe are completely covered by the outer pipe sleeve, then when the outer pipe sleeve slides relative to the inner pipe, a row of rows of air holes are exposed in sequence, partial air is blown out of the air holes, and due to the fact that the aperture of the air holes is small, the air flow rate is high, blowing can be conducted on the position where local materials around are seriously blocked, and dead angle blocking is reduced. When the outer sleeve slides relative to the conveying pipe and the inner pipe slides relative to the outer sleeve, the number of the exposed air holes and the relative positions of the air holes in the conveying pipe are changed continuously, and the aim is to blow more blocked dead angles.
Preferably, each air hole is provided with a flow guide wall, the flow guide wall is positioned in the inner pipe, and the flow guide wall is obliquely arranged towards the powder material conveying direction. The guide wall is used for enabling the airflow blown out of the air holes to face the conveying direction of the powder particle materials and accelerating the material transportation.
More preferably, the outer surface of the inner pipe is provided with an annular limiting step, and the outer pipe sleeve only covers the last ring of the air holes when sliding to abut against the limiting step. The limiting step can enable the outer sleeve to slide relative to the inner tube only within a certain range, and the sliding distance is prevented from being too large. The outer sleeve slides to just expose the last ring of gas pocket when abutting with spacing step, and the gas pocket all exposes this moment promptly, and the air current of gas pocket is the biggest. Along with the reverse slip of outer pipe box, the gas pocket that exposes is less and less, and the air current is littleer and more, realizes accurate control.
More preferably, the maximum sliding distance of the first air supplement port driven by the inner tube when sliding is to slide to the second air supplement port close to the rear air supplement tube. This aim at, guarantee that the conveyer pipe between glassware to the second tonifying qi mouth is unobstructed.
More preferably, the inner tube is rotatable about an axis relative to the outer jacket. This aim at, when rotatory, the air current of gas pocket spun also rotates simultaneously, and it is better to prevent blockking up the effect.
Further preferably, the end face of the first air supplement port of the inner pipe is an inclined plane.
More preferably, the side surface of the lower hopper is provided with an air flow arch breaker or a high-frequency rapping device.
More preferably, a sealing cover is arranged above the discharging hopper, and a feeding hole is formed in the sealing cover.
More preferably, the sealing cover is further provided with a window and/or an inspection hole.
More preferably, a high-level switch is arranged in the lower hopper. The high-level switch is used for sensing the height of the materials in the blanking hopper, so that whether the materials in the conveying pipe are conveyed smoothly or not is presumed, and whether the front air supplement pipe and the rear air supplement pipe operate normally or not is presumed.
Compared with the prior art, the beneficial effects of the utility model are that: the front air supply pipe is optimized, so that the air supply anti-blocking effect is further improved; can be more suitable for the requirement of discontinuous pneumatic transmission.
Drawings
Fig. 1 is a schematic structural diagram of a powder blanking device for discontinuous pneumatic transmission according to embodiment 1;
FIG. 2 is a schematic structural diagram of a front air supply pipe of the powder blanking device for discontinuous pneumatic conveying in embodiment 1;
FIG. 3 is a schematic structural diagram of a powder blanking device for discontinuous pneumatic conveying according to embodiment 2;
in the figure: 1. feeding a hopper; 2. a blanking device; 3. a delivery pipe; 4. a front air supply pipe; 401. an outer pipe sleeve; 402. an inner tube; 403. a first sliding seal; 404. a second sliding seal; 405. air holes; 406. a flow guide wall; 407. a limiting step; 408. a first air supplement port; 5. a rear air supply pipe; 501. a second air supplement port 6 and a high-frequency vibrator; 7. a sealing cover; 8. a feed inlet; 9. a viewing window.
Detailed Description
The technical solutions of the embodiments in this patent will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of this patent. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the patent without making creative efforts, shall fall within the protection scope of the patent.
In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the patent and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the patent. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of this patent, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, 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. It is to be noted that all the figures are exemplary representations. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.
The patent is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Example 1
As shown in fig. 1 and 2, the powder blanking device for discontinuous pneumatic transmission provided in this embodiment includes a blanking hopper 1 and a blanking device 2 from top to bottom, the blanking hopper 1 and the blanking device 2 are rotatably and movably connected, the blanking device 2 is connected with a conveying pipe 3, and further includes a front air supplement pipe 4 and a rear air supplement pipe 5, the rear air supplement pipe 5 is disposed on one side of the conveying pipe 3, the front air supplement pipe 4 is inserted into the blanking device 2 and extends into the conveying pipe 3, a pipe diameter of one end of the conveying pipe 3 close to the blanking device 2 is greater than a pipe diameter of one end close to the rear air supplement pipe 5, and the front air supplement pipe 4 and the conveying pipe 3 are located on the same axial line; the front air supplement pipe 4 comprises an outer sleeve 401 and an inner pipe 402, a first sliding sealing element 403 is arranged between the outer sleeve 401 and the inner pipe 402, and a second sliding sealing element 404 is arranged between the outer sleeve 401 and the conveying pipe 3; the outer sleeve 401 and the inner pipe 402, and the outer sleeve 401 and the conveying pipe 3 can slide relatively; a plurality of air holes 405 are formed in the surface of the inner pipe 402, and the air holes 405 are arranged into a ring shape and then are arranged into a plurality of rings; the outer jacket 401 covers 1 ring or several rings of the air holes 405 when sliding relative to the inner tube 402.
As a technical scheme, the first sliding sealing element and the second sliding sealing element can be rubber sealing rings.
As a preferred technique, each of the air holes 405 is provided with a flow guiding wall 406, the flow guiding wall 406 is located in the inner tube 402, and the flow guiding wall 406 is disposed obliquely to the powder material conveying direction. The guide wall is used for enabling the airflow blown out of the air holes to face the conveying direction of the powder particle materials and accelerating the material transportation.
As a preferred technique, the outer surface of the inner tube 402 is provided with an annular limiting step 407, and the outer sleeve 401 slides to abut against the limiting step 407 and just covers the last ring of the air holes 405. The limiting step can enable the outer sleeve to slide relative to the inner tube only within a certain range, and the sliding distance is prevented from being too large. The outer sleeve slides to just expose the last ring of gas pocket when abutting with spacing step, and the gas pocket all exposes this moment promptly, and the air current of gas pocket is the biggest. Along with the reverse slip of outer pipe box, the gas pocket that exposes is less and less, and the air current is littleer and more, realizes accurate control.
As a preferred technique, the maximum sliding distance of the inner tube 402 with the first air supplement port 408 is to slide to the second air supplement port 501 close to the rear air supplement pipe 5.
As a preferred technique, the end surface of the first air supplement port 408 of the inner tube 402 is a slant surface.
Example 2
As shown in fig. 3, in the powder blanking device for discontinuous pneumatic transmission provided in this embodiment, on the basis of embodiment 1, a high-frequency rapping device 6 is arranged on the side surface of the blanking hopper 1; a sealing cover 7 is arranged above the blanking hopper 1, and a feeding hole 8 is formed in the sealing cover 7; the sealing cover 7 is also provided with a window 9 which can also be used as an inspection hole.
The above embodiments describe the implementation of the present invention in detail, however, the present invention is not limited to the specific details of the above embodiments. Within the scope of the claims and the technical idea of the present invention, various simple modifications and changes can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
Claims (10)
1. A powder blanking device for discontinuous pneumatic conveying comprises a blanking hopper and a blanking device from top to bottom, wherein the blanking hopper is rotatably and movably connected with the blanking device, the blanking device is connected with a conveying pipe, the powder blanking device is characterized by further comprising a front air supplement pipe and a rear air supplement pipe, the rear air supplement pipe is arranged on one side of the conveying pipe, the front air supplement pipe is inserted into the blanking device and extends into the conveying pipe, the pipe diameter of one end, close to the blanking device, of the conveying pipe is larger than that of one end, close to the rear air supplement pipe, of the conveying pipe, and the front air supplement pipe and the conveying pipe are located on the same axis line; the front air supply pipe comprises an outer pipe sleeve and an inner pipe, a first sliding sealing piece is arranged between the outer pipe sleeve and the inner pipe, and a second sliding sealing piece is arranged between the outer pipe sleeve and the conveying pipe; the outer pipe sleeve and the inner pipe as well as the outer pipe sleeve and the conveying pipe can slide relatively; the surface of the inner pipe is provided with a plurality of air holes which are arranged into a ring shape firstly and then into a plurality of rings; the outer pipe sleeve covers 1 ring or a plurality of rings of the air holes when sliding relative to the inner pipe.
2. The apparatus as claimed in claim 1, wherein each of the air holes has a guide wall, the guide wall is disposed in the inner tube, and the guide wall is inclined toward the powder material conveying direction.
3. The blanking device of claim 1 or 2, wherein the outer surface of the inner tube is provided with an annular limiting step, and the outer sleeve slides to abut against the limiting step to just expose the last ring of the air holes.
4. The blanking device of powder and granular materials for discontinuous pneumatic conveying according to claim 1 or 2, wherein the maximum sliding distance of the first air supplement port driven by the sliding of the inner tube is to slide to the second air supplement port close to the rear air supplement pipe.
5. The blanking device of claim 1 or 2, wherein the inner pipe is rotatable around the axis relative to the outer pipe sleeve.
6. The blanking device of claim 5, wherein the end surface of the first air supplement opening of the inner tube is an inclined surface.
7. The powder blanking device for discontinuous pneumatic transmission according to claim 1 or 2, characterized in that an air flow breaker or a high frequency vibrator is arranged on the side surface of the blanking hopper.
8. The blanking device of claim 1 or 2, wherein a sealing cover is arranged above the blanking hopper, and a feeding hole is arranged on the sealing cover.
9. The blanking device of claim 8, wherein the sealing cover is further provided with a window and/or an inspection hole.
10. The powder blanking device for discontinuous pneumatic conveying according to claim 1 or 2, characterized in that a high level switch is arranged in the blanking hopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921657217.4U CN211056197U (en) | 2019-09-30 | 2019-09-30 | Powder blanking device for discontinuous pneumatic conveying |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921657217.4U CN211056197U (en) | 2019-09-30 | 2019-09-30 | Powder blanking device for discontinuous pneumatic conveying |
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| Publication Number | Publication Date |
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| CN211056197U true CN211056197U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921657217.4U Active CN211056197U (en) | 2019-09-30 | 2019-09-30 | Powder blanking device for discontinuous pneumatic conveying |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113844898A (en) * | 2021-09-15 | 2021-12-28 | 北京首钢股份有限公司 | Anti-blocking discharging device and using method thereof |
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2019
- 2019-09-30 CN CN201921657217.4U patent/CN211056197U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113844898A (en) * | 2021-09-15 | 2021-12-28 | 北京首钢股份有限公司 | Anti-blocking discharging device and using method thereof |
| CN113844898B (en) * | 2021-09-15 | 2024-05-24 | 北京首钢股份有限公司 | Anti-blocking discharging device and using method thereof |
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