CN213010771U - Blowing and blocking system of pneumatic powder material conveying device - Google Patents
Blowing and blocking system of pneumatic powder material conveying device Download PDFInfo
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- CN213010771U CN213010771U CN202021852455.3U CN202021852455U CN213010771U CN 213010771 U CN213010771 U CN 213010771U CN 202021852455 U CN202021852455 U CN 202021852455U CN 213010771 U CN213010771 U CN 213010771U
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Abstract
The application provides a blowing and blocking system of a powdery material pneumatic conveying device, wherein a feeding pipeline is connected between a blanking hopper and a sending pump, and a feeding valve is arranged on the feeding pipeline; a discharge pipeline is arranged between the sending pump and the ash storehouse, and a discharge valve is arranged on the discharge pipeline; a first pressure transmitter is arranged on the sending pump; an exhaust pipeline is connected between the top end of the sending pump and the blanking hopper, and an exhaust valve is arranged on the exhaust pipeline; the bottom of the sending pump is provided with a gas transmission pipeline connected with a main gas source pipeline, and the gas transmission pipeline is provided with a gas transmission valve; a second pressure transmitter is arranged on the main air source pipeline; the discharge pipeline is connected with a purging pipeline, one end of the purging pipeline is connected with the main gas source pipeline, and the other end of the purging pipeline is connected to the discharge pipeline and is positioned between the discharge valve and the input end of the ash silo; and a blowing air valve is arranged on the blowing pipeline. The beneficial effect of this application is: the powder blocked in the discharge pipeline can flow back to the sending pump by effectively controlling the exhaust valve and the scavenging valve, so that the automatic powder blowing and blocking at any position in the discharge pipeline can be realized.
Description
Technical Field
The utility model relates to a blow stifled system technical field in the powdery material transmission, concretely relates to powdery material pneumatic conveyor blow stifled system.
Background
The blowing and blocking mode of the existing powder material pneumatic conveying system is that a pressure transmitter and valves are respectively arranged at the beginning and the end of a discharging pipeline, namely, the blowing and blocking mode comprises a beginning conveying valve, a beginning air supplement valve, a beginning pressure transmitter, a tail conveying valve, a tail air supplement valve and a tail pressure transmitter, and the valves and pressure measuring instruments are respectively arranged at the beginning and the tail of the discharging pipeline. This blow stifled system can only detect the stifled pipe problem on the ejection of compact pipeline between the head valve and terminal valve edge and dredge it, can only manual arrange stifled when stifled pipe position takes place at the front end of head valve edge material transmission direction and the pipeline position of terminal valve edge material transmission direction's rear end, consequently can not realize that the stifled pipe of optional position detects and arranges stifled on the ejection of compact pipeline, and owing to need set up the head delivery valve, head gulp valve, head pressure transmitter, terminal delivery valve, terminal gulp valve, terminal pressure transmitter, the part is more, the technology is complicated, and the cost is higher.
Disclosure of Invention
The utility model aims at the above problem, provide a stifled system is blown to powdery material pneumatic conveyor.
In a first aspect, the present application provides a blowing and blocking system for a pneumatic conveying device for powdery materials, comprising: the feeding device comprises a blanking hopper, a sending pump and an ash storehouse, wherein the blanking hopper is arranged above the sending pump, a feeding pipeline is connected between the blanking hopper and the sending pump, and a feeding valve is arranged on the feeding pipeline; a discharge pipeline is arranged between the sending pump and the ash storehouse, and a discharge valve is arranged on the discharge pipeline; a first pressure transmitter is arranged on the sending pump; an exhaust pipeline is connected between the top end of the sending pump and the blanking hopper, and an exhaust valve is arranged on the exhaust pipeline; the bottom of the sending pump is provided with a gas transmission pipeline connected with a gas source main pipeline, and a gas transmission valve is arranged on the gas transmission pipeline; a second pressure transmitter is arranged on the main gas source pipeline; the discharge pipeline is connected with a purging pipeline, one end of the purging pipeline is connected with the main gas source pipeline, and the other end of the purging pipeline is connected to the discharge pipeline and is positioned between the discharge valve and the input end of the ash silo; and a blowing air valve is arranged on the blowing pipeline.
According to the technical scheme provided by the embodiment of the application, the device further comprises a controller, wherein the controller is configured to control the opening or closing of the feeding valve, the discharging valve, the exhaust valve, the gas transmission valve and the purge gas valve and is used for receiving signals sent by the first pressure transmitter and the second pressure transmitter.
According to the technical scheme that this application embodiment provided, the bottom at the blanking fill is connected to the one end of charge-in pipeline, and the top at the delivery pump is connected to the other end.
According to the technical scheme provided by the embodiment of the application, the controller is set to be a PLC controller.
The invention has the beneficial effects that: the application provides a likepowder material pneumatic conveyor's stifled system of blowing, can make the interior powder of blockking up of ejection of compact pipeline to the direction refluence of keeping away from the ash storehouse even can flow back to the delivery pump in the ejection of compact pipeline under the effect of pressure differential in the pipeline through opening or closing of effective control discharge valve and purge valve when taking place the powder in the ejection of compact pipeline and block up, thereby realize that the automation of the interior optional position's of ejection of compact pipeline powder blows stifled, it is better to blow stifled effect, can blow stifled to optional position in the ejection of compact pipeline, and degree of automation is higher, do not need manual intervention, the human cost is saved.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present application;
the text labels in the figures are represented as: 100. a blanking hopper; 200. a delivery pump; 210. a first pressure transmitter; 300. a dust storehouse; 310. a discharge valve; 410. a feed conduit; 420. a feed valve; 430. an exhaust duct; 440. an exhaust valve; 450. a gas pipeline; 460. a gas delivery valve; 470. a second pressure transmitter; 480. purging the pipeline; 490. a purge valve; 500. a main gas source pipeline; 600. and a controller.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings, and the description of the present section is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention in any way.
As shown in fig. 1, which is a schematic view of a first embodiment of the present application, the pneumatic conveying device for powdery material includes: the device comprises a blanking hopper 100, a sending pump 200 and an ash storehouse 300, wherein the blanking hopper 100 is arranged above the sending pump 200, a feeding pipeline 410 is connected between the blanking hopper 100 and the sending pump 200, and a feeding valve 420 is arranged on the feeding pipeline 410; a discharge pipeline is arranged between the sending pump 200 and the ash storehouse 300, and a discharge valve 310 is arranged on the discharge pipeline. The powder material in the blanking hopper 100 enters the sending pump 200 through the feeding pipe 410 and then enters the ash silo 300 through the discharging pipe.
A first pressure transmitter 210 is arranged on the sending pump 200; an exhaust pipeline 430 is connected between the top end of the sending pump 200 and the blanking hopper 100, and an exhaust valve 440 is arranged on the exhaust pipeline 430; the bottom of the sending pump 200 is provided with a gas transmission pipeline 450 connected with a gas source main pipeline 500, and the gas transmission pipeline 450 is provided with a gas transmission valve 460; a second pressure transmitter 470 is arranged on the main air source pipeline 500; the discharge pipeline is connected with a purging pipeline 480, one end of the purging pipeline 480 is connected with the main air source pipeline 500, and the other end of the purging pipeline 480 is connected to the discharge pipeline at a position between the discharge valve 310 and the input end of the ash silo 300; and a purge air valve 490 is arranged on the purge pipeline 480.
The first pressure transducer 210 is used to sense the pressure in the sending pump 200 and the second pressure transducer 470 is used to sense the pressure in the main air supply conduit 500.
In a preferred embodiment, the controller 600 is further included, and the controller 600 is configured to control the opening or closing of the inlet valve 420, the outlet valve 310, the exhaust valve 440, the gas delivery valve 460 and the purge gas valve 490, and is configured to receive signals transmitted by the first pressure transmitter 210 and the second pressure transmitter 470. In the preferred embodiment, the controller 600 serves as a control center, receives the pressure values of the first pressure transmitter 210 and the second pressure transmitter 470, and controls the opening and closing of the respective valve bodies of the transfer device according to the received pressure values.
Preferably, one end of the feeding pipe 410 is connected to the bottom end of the drop hopper 100, and the other end is connected to the top end of the sending pump 200.
Preferably, the controller 600 is provided as a PLC controller 600.
The working principle of the embodiment is as follows:
the feed valve 420 is opened, the exhaust valve 440 is opened, the discharge valve 310, the gas delivery valve 460 and the purge gas valve 490 are closed, and the powdery material in the hoppers enters the sending pump 200 through the feed pipe 410;
a material level sensor is arranged in the sending pump 200, when the material level sensor detects that the sending pump 200 is full, the feeding valve 420 is closed, the exhaust valve 440 is closed, the discharge valve 310 is closed, the purge valve 490 is closed, the gas transmission valve 460 is opened, and the pressure in the sending pump 200 is boosted;
when the pressure in the sending pump 200 reaches a preset output value, the discharge valve 310 is opened, and under the conditions that the gas transmission valve 460 is kept open, the feed valve 420 is closed, the exhaust valve 440 is closed and the purge valve 490 is closed, the powdery material in the sending pump 200 is conveyed into the ash bin 300 through the discharge pipeline;
when the pressure in the sending pump 200 reaches the preset empty bin pressure value, the discharge valve 310 is closed, the gas delivery valve 460 is closed, the purge gas valve 490 is opened, the feed valve 420 is kept closed, the exhaust valve 440 is kept closed, and after a circular material delivery process is completed, the purge pipeline 480 is used for purging and cleaning the powdery material in the discharge pipeline.
In the above working process, when the discharge valve 310 is opened, the sending pump 200 normally transmits the powdery material to the ash bin 300, if the material is blocked in the discharge pipeline, the material is normally conveyed to the ash bin 300, and therefore the discharge pipeline needs to be blown to be blocked when the blockage occurs. The pressure detected by the first pressure transmitter 210 in the normal conveying process of the sending pump 200 should be gradually reduced, but if the pressure detected by the first pressure transmitter 210 does not decrease and reversely increases in the normal conveying process, and when the pressure value of the first pressure transmitter 210 reaches the preset pipe blockage pressure value, it can be determined that the discharge pipeline is blocked, and a blockage blowing flow needs to be started.
In the blowing and blocking process, the discharge valve 310 is kept open, the feed valve 420 is kept closed, the exhaust valve 440 is kept closed, the blowing and sweeping air valve 490 is opened to boost the pressure of the sending pump 200, the air valve 460 can be opened or closed, the boosting of the sending pump 200 is faster by opening the air valve 460, the boosting speed of the sending pump 200 is slower than that of the air valve 460 when the air valve 460 is closed, when the pressure in the sending pump 200 is raised to the preset dredging pressure, the exhaust valve 440 is opened instantaneously, the material in the discharge pipeline flows backwards in the direction far away from the ash bin 300 under the action of the instantaneous pressure difference in the sending pump 200, even the blocked material can flow backwards into the sending pump 200, so that the problem of material blocking in the discharge pipeline is solved, the blowing and blocking effect is better, the blowing and blocking can be performed on any position in the discharge pipeline, the automation degree is higher, and manual intervention is not needed, the labor cost is saved. In this embodiment, in the blockage blowing process, when the pressure difference between the first pressure transmitter 210 and the second pressure transmitter 470 is zero, it is considered that the pipe blockage position in the discharge pipeline is already unblocked. The technical scheme of this application is applicable to and sweeps the stifled pipe of any position on the ejection of compact pipeline, and application scope is wider.
The principles and embodiments of the present application are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present application, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments, or may be learned by practice of the invention.
Claims (4)
1. A blowing and blocking system of a powdery material pneumatic conveying device comprises: the device comprises a blanking hopper (100), a sending pump (200) and an ash storehouse (300), and is characterized in that the blanking hopper (100) is arranged above the sending pump (200), a feeding pipeline (410) is connected between the blanking hopper (100) and the sending pump (200), and a feeding valve (420) is arranged on the feeding pipeline (410); a discharge pipeline is arranged between the sending pump (200) and the ash storehouse (300), and a discharge valve (310) is arranged on the discharge pipeline;
a first pressure transmitter (210) is arranged on the sending pump (200); an exhaust pipeline (430) is connected between the top end of the sending pump (200) and the blanking hopper (100), and an exhaust valve (440) is arranged on the exhaust pipeline (430); the bottom of the sending pump (200) is provided with a gas transmission pipeline (450) connected with a gas source main pipeline (500), and a gas transmission valve (460) is arranged on the gas transmission pipeline (450); a second pressure transmitter (470) is arranged on the main air source pipeline (500);
the discharge pipeline is connected with a purging pipeline (480), one end of the purging pipeline (480) is connected with the main air source pipeline (500), and the other end of the purging pipeline (480) is connected to the discharge pipeline and is positioned between the discharge valve (310) and the input end of the ash silo (300); and a purge air valve (490) is arranged on the purge pipeline (480).
2. The blowing and blocking system of the pneumatic conveying device for powdery materials as claimed in claim 1, further comprising a controller (600), wherein the controller (600) is configured to control the opening or closing of the inlet valve (420), the outlet valve (310), the exhaust valve (440), the gas delivery valve (460) and the purge gas valve (490), and to receive signals sent by the first pressure transmitter (210) and the second pressure transmitter (470).
3. The blowing and blocking system of the pneumatic conveying device for powdery materials as claimed in claim 1, characterized in that one end of the feeding pipeline (410) is connected to the bottom end of the blanking hopper (100), and the other end is connected to the top end of the sending pump (200).
4. The blowing and blocking system of the pneumatic conveying device for the powdery material as claimed in claim 2, wherein the controller (600) is provided as a PLC (600).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021852455.3U CN213010771U (en) | 2020-08-31 | 2020-08-31 | Blowing and blocking system of pneumatic powder material conveying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021852455.3U CN213010771U (en) | 2020-08-31 | 2020-08-31 | Blowing and blocking system of pneumatic powder material conveying device |
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| CN213010771U true CN213010771U (en) | 2021-04-20 |
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| CN202021852455.3U Active CN213010771U (en) | 2020-08-31 | 2020-08-31 | Blowing and blocking system of pneumatic powder material conveying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988119A (en) * | 2022-06-15 | 2022-09-02 | 西安西热水务环保有限公司 | Pneumatic conveying system and method suitable for evaporating high-salinity ash from desulfurization wastewater bypass flue gas of thermal power plant |
-
2020
- 2020-08-31 CN CN202021852455.3U patent/CN213010771U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988119A (en) * | 2022-06-15 | 2022-09-02 | 西安西热水务环保有限公司 | Pneumatic conveying system and method suitable for evaporating high-salinity ash from desulfurization wastewater bypass flue gas of thermal power plant |
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