CN219216773U - Powder conveying system - Google Patents
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- CN219216773U CN219216773U CN202222547160.0U CN202222547160U CN219216773U CN 219216773 U CN219216773 U CN 219216773U CN 202222547160 U CN202222547160 U CN 202222547160U CN 219216773 U CN219216773 U CN 219216773U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to the field of material conveying, in particular to a powder conveying system. The powder conveying system comprises a conveying pipeline, a pressure supply device and a pressure detection device, wherein the conveying pipeline is provided with a feed inlet, a discharge outlet and an air inlet, the feed inlet is used for being communicated with the feeding device, the discharge outlet is used for being communicated with the receiving bin, the air inlet is positioned at the upstream of the feed inlet, the pressure supply pipeline is used for being communicated with the pressure supply device and the receiving bin, the pressure supply device is used for providing negative pressure for the conveying pipeline so that powder entering the conveying pipeline can be conveyed into the receiving bin, and the pressure detection device is arranged on the pressure supply pipeline and/or the conveying pipeline; the powder conveying system also comprises a controller, an air inlet control valve arranged on the conveying pipeline and a feed control valve used for controlling the feed rate of the conveying pipeline, wherein the controller controls the opening degree of the air inlet control valve and/or the feed control valve according to the pressure information fed back by the pressure detection device so that the air inlet rate of the conveying pipeline is matched with the feed rate of the conveying pipeline.
Description
Technical Field
The utility model relates to the field of material conveying, in particular to a powder conveying system.
Background
Because of the increasing environmental protection requirement, the powder conveying in the current sealant production process is changed from positive pressure conveying to negative pressure conveying. The existing feeding device for feeding powder and the receiving bin for receiving powder are conveyed by adopting a powder conveying system, the powder conveying system generally comprises a conveying pipeline, a pressure supply pipeline and a pressure supply device, the conveying pipeline is provided with a feeding hole for communicating with the feeding device and a discharging hole for communicating with the receiving bin, the feeding hole is located at the upstream of the discharging hole, an air inlet is further formed in the conveying pipeline and located at the upstream of the feeding hole, one end of a negative pressure pipeline is communicated with the receiving bin, and the other end of the negative pressure pipeline is communicated with the pressure supply device. When the powder conveying system conveys powder, the pressure supply device is started to provide negative pressure for conveying the powder to the material receiving bin for the conveying pipeline, the powder flowing out of the feeding device enters the conveying pipeline through the feeding hole, and the powder entering the conveying pipeline can be conveyed to the material receiving bin along the conveying pipeline.
However, the existing powder conveying system has the following disadvantages: the opening of the air inlet of the conveying pipeline is fixed in the powder conveying process, namely the air inlet rate of the conveying pipeline (namely the air inlet amount in unit time of the conveying pipeline) is kept constant. When the feeding rate of the feeding pipeline (namely, the feeding amount entering the feeding pipeline through the feeding port in unit time) is increased or decreased, the phenomenon that the air inlet rate of the feeding pipeline is not matched with the feeding rate of the feeding pipeline is easy to occur is specifically shown as follows: when the feeding rate of the material conveying pipeline is too high, the material-gas mixing ratio (namely the ratio of the amount of powder conveyed in unit time to the air amount) in the material conveying pipeline is too high, and the blockage phenomenon is easy to occur in the material conveying pipeline; when the feeding rate of the material conveying pipeline is too small, the material-gas mixing ratio in the material conveying pipeline is too small, so that the efficiency of the pressure supply device is reduced, and the energy waste is caused.
Disclosure of Invention
The utility model aims to provide a powder conveying system which is used for solving the technical problem that the air inlet rate of a conveying pipeline is not matched with the feeding rate of the conveying pipeline when the existing powder conveying system conveys powder.
The technical scheme of the powder conveying system is as follows:
the powder conveying system comprises a conveying pipeline, a pressure supply device and a pressure detection device, wherein the conveying pipeline is provided with a feed inlet, a discharge outlet and an air inlet, the feed inlet is used for being communicated with the feeding device, the discharge outlet is used for being communicated with the receiving bin, the air inlet is positioned at the upstream of the feed inlet, the pressure supply pipeline is used for being communicated with the pressure supply device and the receiving bin, the pressure supply device is used for providing negative pressure for the conveying pipeline so that powder entering the conveying pipeline can be conveyed into the receiving bin, and the pressure detection device is arranged on the pressure supply pipeline and/or the conveying pipeline; the powder conveying system further comprises a controller, an air inlet control valve arranged on the conveying pipeline and a feeding control valve used for controlling the feeding rate of the conveying pipeline, wherein the controller is connected with the pressure detection device and used for controlling the opening degree of the air inlet control valve and/or the feeding control valve according to pressure information fed back by the pressure detection device so that the air inlet rate of the conveying pipeline is matched with the feeding rate of the conveying pipeline.
The beneficial effects are that: when the powder conveying system conveys powder, the controller can compare the pressure value detected by the pressure detecting device with the set pressure, when the pressure value detected by the pressure detecting device is far smaller than the set pressure (namely, the mixing ratio of the material and the gas in the conveying pipeline is too small), the feeding rate of the conveying pipeline is not matched with the air inlet rate of the conveying pipeline, the feeding control valve can be controlled by the controller to improve the feeding rate of the conveying pipeline or reduce the opening of the air inlet control valve (namely, reduce the air inlet rate of the conveying pipeline), and when the pressure value detected by the pressure detecting device is increased to be close to the set pressure, the air inlet rate of the conveying pipeline is matched with the feeding rate of the conveying pipeline; when the pressure value detected by the pressure detection device is larger than the set pressure (namely, when the mixing ratio of the materials and the gases in the conveying pipeline is too large), the feeding rate of the conveying pipeline is not matched with the feeding rate of the conveying pipeline at the same time, the feeding control valve can be controlled by the controller to reduce the feeding rate of the conveying pipeline or increase the opening degree of the feeding control valve (namely, increase the feeding rate of the conveying pipeline), so that when the pressure value detected by the pressure detection device is smaller than and close to the set pressure, the feeding rate of the conveying pipeline is matched with the feeding rate of the conveying pipeline.
Further, the air inlet control valve is arranged between the feed inlet and the air inlet.
The beneficial effects are that: the air inlet control valve is arranged between the feed inlet and the air inlet, so that the air inlet control valve can not obstruct the conveying of powder, and the conveying of the powder is smoother.
Further, the air inlet is provided with a filter element, and the filter element is used for filtering impurities in the air.
The beneficial effects are that: the arrangement of the filtering piece ensures that impurities in the air can not enter the material conveying pipeline through the air inlet to pollute the powder.
Further, the powder conveying system further comprises a vibration exciter arranged on the conveying pipeline.
The beneficial effects are that: the vibration exciter can dredge the blocked conveying pipeline through vibration, and the dredging efficiency is higher.
Further, at least two vibration exciters are arranged on the material conveying pipeline at intervals.
The beneficial effects are that: at least two vibration exciters are arranged on the material conveying pipeline at intervals, so that the coverage range of the vibration exciters is wider, and the dredging effect is better.
Further, the powder conveying system also comprises a dredging device for introducing high-pressure gas into the conveying pipeline.
The beneficial effects are that: high-pressure gas is introduced into the conveying pipeline through the dredging device to dredge the conveying pipeline, and the dredging efficiency is higher.
Further, the dredging device comprises a pulse air inlet ball valve arranged on the material conveying pipeline.
The beneficial effects are that: the pulse frequency of the pulse air inlet ball valve can be adjusted according to the blocking condition in the material conveying pipeline so as to pertinently introduce high-pressure gas into the material conveying pipeline, and the dredging effect is better.
Further, at least two pulse air inlet ball valves are arranged on the material conveying pipeline at intervals.
The beneficial effects are that: at least two pulse air inlet ball valves are arranged on the material conveying pipeline at intervals, so that the coverage range of the pulse air inlet ball valves is wider, and the dredging effect is better.
Further, the pulse air inlet ball valve is arranged at the bending position of the material conveying pipeline.
The beneficial effects are that: the probability of blocking the bending part of the material conveying pipeline is higher, so that the pulse air inlet ball valve is pertinently arranged at the bending part of the pipeline, and the dredging effect is better.
Drawings
FIG. 1 is a schematic diagram of the connection between the powder delivery system of the present utility model and the feeding device, receiving bin, and feed pipe.
Reference numerals illustrate: 1. a material conveying pipeline; 2. receiving a storage bin; 3. a control cabinet; 4. a feed conduit; 5. a pressure supply pipe; 6. a pressure supply device; 7. a pressure sensor; 8. an intake control valve; 9. a vibration exciter; 10. pulse air inlet ball valve; 11. a filter; 12. a feeding device; 13. and (5) blanking a rotary valve.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.
It should be noted that in the present embodiment, relational terms such as "first" and "second" and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprising one … …" or the like, as may occur, does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the depicted element.
In the description of the present utility model, unless explicitly stated and limited otherwise, terms such as "mounted," "connected," and "connected" may be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly, indirectly through intermediaries, or in communication with the interior of the two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art in specific cases.
In the description of the present utility model, unless explicitly stated and limited otherwise, the term "provided" as may occur, for example, as an object of "provided" may be a part of a body, may be separately arranged from the body, and may be connected to the body, and may be detachably connected or may be non-detachably connected. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art in specific cases.
The present utility model is described in further detail below with reference to examples.
Example 1 of the powder delivery system provided in the present utility model:
as shown in fig. 1, the powder conveying system comprises a conveying pipeline 1, a pressure supply pipeline 5, a pressure supply device 6 and a pressure detection device.
The one end that the material conveying pipeline 1 is located the upper reaches has the air inlet with the air intercommunication, and the one end that the material conveying pipeline 1 is located the low reaches has the discharge gate to the discharge gate is with connecing feed bin 2 intercommunication. The material conveying pipeline 1 is also provided with a material inlet, the material inlet is positioned between the air inlet and the material outlet, the material inlet is communicated with a material feeding port of the material feeding device 12 through the material feeding pipeline 4, the material feeding device 12 comprises a bin body, and the material feeding port is arranged at the bottom of the bin body. The pressure supply device 6 is communicated with the receiving bin 2 through a pressure supply pipeline 5, and the pressure supply device 6 can provide negative pressure so that powder entering the material conveying pipeline 1 through a feed inlet is smoothly conveyed into the receiving bin 2. In the present embodiment, the pressure supply device 6 is a suction fan, and in other embodiments, the pressure supply device may be a vacuum pump. The powder put in the feeding device 12 flows out through the feeding port, enters the material conveying pipeline 1 along the feeding pipeline 4, and is conveyed into the material receiving bin 2 under the action of negative pressure. In this embodiment, the conveyed powder is used for producing the sealant, the receiving bin 2 is only used for temporarily storing the powder, and the powder in the receiving bin 2 is required to be subjected to the next process.
In the present embodiment, the pressure detecting means is a pressure sensor 7, and the pressure sensor 7 is provided on the pressure supply pipe 5 to detect the internal pressure of the pressure supply pipe 5. In other embodiments, the pressure detection device may be a pressure gauge.
The powder conveying system further comprises a feeding control valve, an air inlet control valve 8 and a controller, wherein the feeding control valve is arranged at the feeding port of the feeding device 12 and is used for controlling the discharging rate of the feeding port (namely, the discharging amount of the feeding port of the feeding device 12 in unit time), the feeding control valve is specifically a discharging rotary valve 13, the discharging rate of the feeding port can be controlled by controlling the rotating speed of the discharging rotary valve 13, and it is noted that the feeding rate of the feeding port of the feeding device 12 is equal to the feeding rate of the feeding pipeline 1 (namely, the feeding amount entering the feeding pipeline 1 through the feeding port in unit time) due to the fact that the feeding port of the feeding pipeline 1 is mutually communicated with the feeding port of the feeding device 12. An intake control valve 8 is provided between the intake port and the feed port, and the intake control valve 8 is a valve capable of adjusting the opening degree.
The controller is integrated in the control cabinet 3, the feed control valve and the air inlet control valve 8 are both connected with the controller, and a set pressure range is preset in the controller, and in the embodiment, the set pressure range is-20 KPa-60 KPa. When the conveying rate of the whole powder conveying system (namely the amount of powder conveyed by the conveying pipeline 1 in unit time) needs to be improved, the rotating speed of the blanking rotary valve 13 can be improved through the controller so as to improve the feeding rate of the conveying pipeline 1, and further improve the conveying rate of the whole powder conveying system. Along with the improvement of the feeding rate of the conveying pipeline 1, the mixing ratio of the material and the gas (namely the ratio of the amount of the powder conveyed in unit time to the air amount) in the conveying pipeline 1 is gradually increased, the pressure value detected by the pressure sensor 7 is also increased, and when the pressure value is within the range of-20 KPa to-60 KPa, the air inlet rate of the conveying pipeline 1 (namely the air inlet amount of the conveying pipeline 1 in unit time) is matched with the feeding rate of the conveying pipeline 1, so that the powder in the conveying pipeline 1 is not easy to be blocked. If the feeding rate of the feeding pipe 1 is continuously raised until the pressure value detected by the pressure sensor 7 is greater than-60 Kpa, at this time, the feeding rate of the feeding pipe 1 is not matched with the feeding rate of the feeding pipe 1, the mixture ratio of the materials and the gases in the feeding pipe 1 is too large, the feeding pipe 1 is at risk of blockage, at this time, the rotation speed of the blanking rotary valve 13 can be reduced by the controller or the opening degree of the air inlet control valve 8 can be increased (i.e. the feeding rate of the feeding pipe 1 is increased), and if the pressure value detected by the pressure sensor 7 is still greater than the set pressure, the existence of blockage in the feeding pipe 1 can be determined.
When the conveying rate of the whole powder conveying system (namely, the amount of powder conveyed in unit time of the conveying pipeline 1) needs to be reduced, the rotating speed of the blanking rotary valve 13 can be reduced through the controller to reduce the feeding rate of the conveying pipeline 1, and then the conveying rate of the whole powder conveying system is reduced, as the feeding rate of the conveying pipeline 1 is reduced, the mixing ratio of the material and the gas in the conveying pipeline 1 (namely, the ratio of the amount of powder conveyed in unit time to the amount of air) gradually reduces, the pressure value detected by the pressure sensor 7 also reduces, and if the pressure value detected by the pressure sensor 7 is smaller than-20 KPa (namely, the mixing ratio of the material and the gas in the conveying pipeline 1 is too small), at the moment, the feeding rate of the conveying pipeline 1 is not matched with the feeding rate of the conveying pipeline 1, the rotating speed of the blanking rotary valve 13 can be increased through the controller or the opening of the air inlet control valve 8 is reduced (namely, the air inlet rate of the conveying pipeline 1 is reduced, so that when the pressure value detected by the pressure sensor 7 is increased to be between-20 KPa and-60 Kpa, and the feeding rate of the conveying pipeline 1 is matched with the feeding rate of the conveying pipeline 1.
The powder conveying system also comprises a vibration exciter 9 arranged on the conveying pipeline 1 and a dredging device for introducing high-pressure gas into the conveying pipeline 1. The vibration exciter 9 is arranged on the conveying pipeline 1 at intervals, and when the conveying pipeline 1 is blocked, the vibration exciter 9 can vibrate to dredge the conveying pipeline 1. The dredging device comprises a pulse air inlet ball valve 10 and an air pump connected with the pulse air inlet ball valve 10, when the material conveying pipeline 1 is blocked, the air pump supplies air for the pulse air inlet ball valve 10, and the pulse air inlet ball valve 10 can introduce high-pressure air into the material conveying pipeline 1 according to a certain pulse frequency so as to dredge the material conveying pipeline 1. In other embodiments, the pull throughs may also include only an air pump in direct communication with the delivery conduit for introducing high pressure gas into the delivery conduit.
In the present embodiment, the receiving bin 2 is arranged at a high position, so that the material conveying pipeline 1 comprises a horizontal pipe section and a vertical pipe section, and a bending section is arranged at the joint of the horizontal pipe section and the vertical pipe section. The pulse air inlet ball valve 10 is provided with two bending sections which are respectively arranged at the two bending sections of the conveying pipeline 1 (namely, the pulse air inlet ball valve 10 is arranged at the bending section of the conveying pipeline 1). The vibration exciter 9 and the pulse air inlet ball valve 10 are controlled by the controller, and when the material conveying pipeline 1 is blocked, the controller controls the vibration exciter 9 and the pulse air inlet ball valve 10 to synchronously act to dredge the material conveying pipeline 1, and the pulse frequency of the pulse air inlet ball valve 10 can be regulated and controlled by the controller.
In addition, in order to prevent impurities in air from entering the material conveying pipeline 1, a filter element 11 for filtering impurities in air is arranged at an air inlet in the material conveying pipeline 1, and in this embodiment, the filter element 11 is an air filter element, or in other embodiments, the filter device may be air filter cotton arranged at the air inlet.
The powder conveying system does not include the feeding device 12, the receiving bin 2 and the feeding pipeline 4, and the powder conveying system, the feeding device 12, the receiving bin and the feeding pipeline 4 are assembled when in use.
According to the powder conveying system disclosed by the utility model, the air inlet rate of the conveying pipeline 1 and the feeding rate of the conveying pipeline 1 can be adjusted according to the pressure value fed back by the pressure sensor 7 so that the air inlet rate of the conveying pipeline 1 is matched with the feeding rate of the feeding device 12, the conveying rate (including lifting and lowering the conveying rate) of the whole powder conveying system can be regulated and controlled, the probability of blocking in the conveying pipeline 1 can be reduced, and the service life of the suction fan can be effectively prolonged (the suction fan is damaged due to overload work of the suction fan when the blocking occurs in the conveying pipeline 1).
In embodiment 2 of the powder transporting system provided in the present utility model, unlike embodiment 1, an intake control valve is provided on the transporting pipe at a position downstream of the feed port.
Unlike embodiment 1, in embodiment 3 of the powder conveying system provided in the present utility model, only a vibration exciter is disposed on the conveying pipe, and no pulse air intake ball valve is disposed. Or in other embodiments, only the pulse air inlet ball valve is arranged on the material conveying pipeline, and no vibration exciter is arranged.
In embodiment 4 of the powder conveying system provided by the utility model, unlike in embodiment 1, two vibration exciters are arranged on a conveying pipeline at intervals. Or in other embodiments, the vibration exciter is arranged on the material conveying pipeline at intervals of four, five, six or more.
Unlike embodiment 1, embodiment 5 of the powder conveying system provided in the present utility model is that in this embodiment, a pulse air intake ball valve is provided on a horizontal pipe section of a conveying pipe.
In embodiment 7 of the powder conveying system provided by the utility model, unlike in embodiment 1, three pulse air inlet ball valves are arranged on a conveying pipeline at intervals. Or in other embodiments, the pulse air inlet ball valves are arranged on the material conveying pipeline at intervals of four, five, six or more.
The above description is only a preferred embodiment of the present utility model, and the patent protection scope of the present utility model is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. The powder conveying system is characterized by comprising a conveying pipeline (1), a pressure supply pipeline (5), a pressure supply device (6) and a pressure detection device, wherein the conveying pipeline (1) is provided with a feed inlet communicated with a feeding device (12), a discharge outlet communicated with a receiving bin (2) and an air inlet positioned at the upstream of the feed inlet, the pressure supply pipeline (5) is used for communicating the pressure supply device (6) with the receiving bin (2), the pressure supply device (6) is used for providing negative pressure for the conveying pipeline (1) so that powder entering the conveying pipeline (1) can be conveyed into the receiving bin (2), and the pressure detection device is arranged on the pressure supply pipeline (5) and/or the conveying pipeline (1); the powder conveying system further comprises a controller, an air inlet control valve (8) arranged on the conveying pipeline (1) and a feed control valve for controlling the feed rate of the conveying pipeline (1), wherein the controller is connected with the pressure detection device to control the opening degree of the air inlet control valve (8) and/or the feed control valve according to pressure information fed back by the pressure detection device, so that the air inlet rate of the conveying pipeline (1) is matched with the feed rate of the conveying pipeline (1).
2. Powder delivery system according to claim 1, characterized in that the inlet control valve (8) is arranged between the inlet opening and the inlet opening.
3. Powder delivery system according to claim 1, characterized in that a filter element (11) is provided at the air inlet, the filter element (11) being adapted to filter impurities in the air.
4. A powder conveyor system according to any one of claims 1-3, characterized in that the powder conveyor system further comprises a vibration exciter (9) arranged on the material conveying pipe (1).
5. Powder conveying system according to claim 4, characterized in that the vibration exciter (9) is arranged at intervals on the conveying conduit (1).
6. A powder conveyor system according to any one of claims 1-3, characterized in that the powder conveyor system further comprises a dredging device for letting in high-pressure gas into the conveying conduit (1).
7. Powder delivery system according to claim 6, characterized in that the deoccluding device comprises a pulse air ball valve (10) arranged on the delivery conduit (1).
8. Powder conveying system according to claim 7, characterized in that the pulse inlet ball valve (10) is arranged at intervals on the conveying pipeline (1).
9. Powder conveying system according to claim 7, characterized in that the pulse-feed ball valve (10) is arranged at a bend of the conveying conduit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222547160.0U CN219216773U (en) | 2022-09-26 | 2022-09-26 | Powder conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222547160.0U CN219216773U (en) | 2022-09-26 | 2022-09-26 | Powder conveying system |
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| Publication Number | Publication Date |
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| CN219216773U true CN219216773U (en) | 2023-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222547160.0U Active CN219216773U (en) | 2022-09-26 | 2022-09-26 | Powder conveying system |
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| CN (1) | CN219216773U (en) |
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- 2022-09-26 CN CN202222547160.0U patent/CN219216773U/en active Active
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