CN220311213U - Anti-blocking dredging system for liquid level sensor pipelines of mixing drum and medium drum of coal preparation plant - Google Patents
Anti-blocking dredging system for liquid level sensor pipelines of mixing drum and medium drum of coal preparation plant Download PDFInfo
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- CN220311213U CN220311213U CN202321789900.XU CN202321789900U CN220311213U CN 220311213 U CN220311213 U CN 220311213U CN 202321789900 U CN202321789900 U CN 202321789900U CN 220311213 U CN220311213 U CN 220311213U
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- 239000007788 liquid Substances 0.000 title claims abstract description 36
- 239000003245 coal Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000007664 blowing Methods 0.000 claims abstract description 26
- 238000000926 separation method Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an anti-blocking dredging system for liquid level sensor pipelines of a mixing drum and a medium drum in a coal preparation plant, which comprises a main drum body and further comprises the following components: the barrel body branch pipeline is obliquely upwards arranged on the side wall of the main barrel body; the back-blowing pipeline is arranged on the barrel body branch pipeline; the high-pressure air bag is connected with one end of the back-blowing pipeline, which is far away from the barrel branch pipeline, through a high-pressure air bag pipeline; the high-pressure air solenoid valve is arranged at one end of the high-pressure air bag pipeline, which is close to the back-blowing pipeline; and the PLC control system is in signal connection with the high-pressure air electromagnetic valve so as to control the high-pressure air electromagnetic valve to be opened and closed. According to the utility model, the high-pressure air dredging device is arranged on the barrel branch pipeline, and the high-pressure air solenoid valve is controlled to be opened by the PLC control system to lead high-pressure air into the dredging pipeline, so that the pipeline is quickly dredged, and the normal operation of the liquid level sensor is ensured.
Description
Technical Field
The utility model relates to the technical field of anti-blocking dredging of coal preparation devices, in particular to an anti-blocking dredging system for liquid level sensor pipelines of a mixing drum and a medium drum of a coal preparation plant.
Background
The existing coal separation technology comprises gravity separation, flotation, dry coal separation and the like, wherein the gravity medium coal separation has strong treatment capacity, high mechanization degree and good separation efficiency, and is widely applied to the process and flow of coal separation plants. The qualified medium barrel and the medium mixing barrel are inevitably used in the dense medium coal separation, and are used for buffering or mixing the dense medium in the dense medium separation. The liquid level sensor is an indispensable liquid level detection device for the qualified medium barrel and the mixed medium barrel, can monitor the liquid level condition in the barrel on line, upload liquid level information in situ in time, and realize the on-line regulation and control of the liquid level in the barrel. In order to prevent the sensor components from wearing out, the level sensor cannot be mounted directly on the barrel wall and must be mounted on an external pipe because of the large amount of solid particles contained in the barrel. Heavy media or coal deposits in the barrel can occur when the coal preparation plant is stopped for maintenance, and high-pressure air is usually adopted for pre-mixing and restarting operation before starting. The conventional bucket is difficult to dredge a blocked pipeline in a high-pressure air blowing mode, so that a liquid level sensor cannot accurately feed back the liquid level in real time, the liquid level monitoring of a mixed medium bucket or a qualified medium bucket is affected, and serious production accidents such as bucket overflow and the like can be possibly caused. In the prior art, the liquid level sensor is usually detached to dredge the method, so that materials in the barrel are required to be emptied, labor and time are wasted, heavy media are wasted, and production is seriously affected.
Disclosure of Invention
In order to dredge a barrel branch pipeline flexibly in time and ensure that a liquid level sensor monitors the liquid level accurately, the utility model provides an anti-blocking dredging system for liquid level sensor pipelines of a mixing barrel and a medium barrel of a coal preparation plant.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
the utility model provides a coal preparation factory mixes and mediate bucket and medium bucket level sensor pipeline anti-blocking dredging system, includes the main barrel body, still includes:
the barrel body branch pipeline is obliquely upwards arranged on the side wall of the main barrel body;
the back-blowing pipeline is arranged on the barrel body branch pipeline;
the high-pressure air bag is connected with one end of the back-blowing pipeline, which is far away from the barrel branch pipeline, through a high-pressure air bag pipeline;
the high-pressure air solenoid valve is arranged at one end of the high-pressure air bag pipeline, which is close to the back-blowing pipeline;
and the PLC control system is in signal connection with the high-pressure air electromagnetic valve so as to control the high-pressure air electromagnetic valve to be opened and closed.
Preferably, the back-blowing pipeline is obliquely upwards arranged on the barrel body branch pipeline, and an included angle between the axis of the back-blowing pipeline and the axis of the barrel body branch pipeline is 30-45 degrees.
Preferably, the device further comprises a liquid level sensor, wherein the liquid level sensor is arranged at one end of the barrel branch pipeline far away from the main barrel.
Preferably, the wind pressure of the high-pressure wind bag is 0.4-0.6 MPa.
Preferably, the PLC control system controls the high-pressure air solenoid valve to be opened and closed through a relay.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model discloses an anti-blocking dredging system for liquid level sensor pipelines of a mixing medium barrel and a medium barrel of a coal preparation plant, which aims at solving the problem that a barrel branch pipeline is blocked and a liquid level sensor monitors failure because heavy medium is deposited in the mixing medium barrel or a qualified medium barrel after the coal preparation plant is stopped. According to the utility model, the high-pressure air dredging device is arranged on the barrel branch pipeline, and the high-pressure air solenoid valve is controlled to be opened by the PLC control system to lead high-pressure air into the dredging pipeline, so that the pipeline is quickly dredged, and the normal operation of the liquid level sensor is ensured. Compared with the existing dismantling and dredging technology, the utility model has the advantages of small maintenance amount, no emptying of the medium barrel, no influence on production and quick dredging.
Drawings
For a clearer description of embodiments of the utility model or of the prior art, the drawings which are used in the description of the embodiments or of the prior art will be briefly described, it being evident that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system for preventing and dredging a pipeline of a mixing drum liquid level sensor in a coal preparation plant.
In the figure: 1: a mixing barrel; 2: the barrel body is branched; 3: a liquid level sensor; 4: a back-blowing pipeline; 5: a high-pressure air solenoid valve; 6: a PLC control system; 7: high-pressure wind bags.
FIG. 2 is a schematic diagram of a pipeline anti-blocking dredging system of a qualified medium tank liquid level sensor of a coal preparation plant.
In the figure: 1: a qualified medium barrel; 2: the barrel body is branched; 3: a liquid level sensor; 4: a back-blowing pipeline; 5: a high-pressure air solenoid valve; 6: a PLC control system; 7: high-pressure wind bags.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings.
Example 1
As shown in fig. 1, an anti-blocking dredging system for a liquid level sensor pipeline of a mixing drum in a coal preparation plant comprises a mixing drum 1 and further comprises: the barrel branch pipeline 2 is obliquely upwards arranged on the side wall of the main barrel 1; the liquid level sensor 3 is arranged at one end of the barrel body branch pipeline 2, which is far away from the mixing barrel 1; the back-blowing pipeline 4 is obliquely upwards arranged on the barrel branch pipeline 2, and an included angle between the axis of the back-blowing pipeline 4 and the axis of the barrel branch pipeline 2 is 30 degrees, so that the pipeline is convenient to be dredged by high-pressure air; the high-pressure air bag 7, the wind pressure of the high-pressure air bag 7 is 0.4MPa, and the high-pressure air bag 7 is connected with one end of the back-blowing pipeline 4, which is far away from the barrel branch pipeline 2, through a high-pressure air bag pipeline; the high-pressure air solenoid valve 5 is arranged at one end of the high-pressure air bag pipeline close to the back-blowing pipeline 4; and the PLC control system 6 is connected with the high-pressure air electromagnetic valve 5 through signals, so that the PLC control system 6 controls the high-pressure air electromagnetic valve 5 to be opened and closed through a relay.
The PLC control system 6 can be set to manual control and automatic control, and both manual and automatic control of the PLC control system 6 controls opening and closing of the high-pressure air solenoid valve 5 by a relay. During manual control, an operator manually controls the on-off of the relay, so as to control the opening and closing of the high-pressure air electromagnetic valve 5; during automatic control, the PLC control system 6 outputs 1 or 0 to realize the on-off of the relay, so as to control the opening and closing of the high-pressure air solenoid valve 5. When the device works, the output state of the PLC control system 6 is 1, the PLC control system 6 controls the relay to be electrified, so that the high-pressure air solenoid valve 5 is opened, and high-pressure air in the high-pressure air bag 7 sequentially passes through the high-pressure air bag pipeline, the high-pressure air solenoid valve 5 and the back-blowing pipeline 4 to enter the barrel branch pipeline 2, so that the barrel branch pipeline 2 is dredged; when the high-voltage electromagnetic valve does not work, the output state of the PLC control system 6 is 0, and the PLC control system 6 controls the relay to be powered off, so that the high-voltage electromagnetic valve 5 is closed.
The high-pressure air electromagnetic valve 5 is opened each time, the PLC control system 6 controls the relay to be electrified for 10s, after 10s, the PLC control system 6 automatically switches the output state to be 0, the relay is powered off, the high-pressure air electromagnetic valve 5 is closed, and one dredging operation is completed. 3 dredging operations are completed by the PLC control system 6 before each start, and 15s are reserved between the two dredging operations.
Example 2
As shown in fig. 2, a qualified medium bucket liquid level sensor pipeline anti-blocking dredging system of a coal preparation plant comprises a qualified medium bucket 1 and further comprises: the barrel branch pipeline 2 is obliquely upwards arranged on the side wall of the main barrel 1; the liquid level sensor 3 is arranged at one end of the barrel branch pipeline 2, which is far away from the qualified medium barrel 1; the back-blowing pipeline 4 is obliquely upwards arranged on the barrel branch pipeline 2, and an included angle between the axis of the back-blowing pipeline 4 and the axis of the barrel branch pipeline 2 is 40 degrees, so that the pipeline is convenient to be dredged by high-pressure air; the high-pressure air bag 7, the wind pressure of the high-pressure air bag 7 is 0.4-0.6 MPa, and the high-pressure air bag 7 is connected with one end of the back-blowing pipeline 4, which is far away from the barrel branch pipeline 2, through a high-pressure air bag pipeline; the high-pressure air solenoid valve 5 is arranged at one end of the high-pressure air bag pipeline close to the back-blowing pipeline 4; and the PLC control system 6 is connected with the high-pressure air electromagnetic valve 5 through signals, so that the PLC control system 6 controls the high-pressure air electromagnetic valve 5 to be opened and closed through a relay.
The PLC control system 6 can be set to manual control and automatic control, and both manual and automatic control of the PLC control system 6 controls opening and closing of the high-pressure air solenoid valve 5 by a relay. During manual control, an operator manually controls the on-off of the relay, so as to control the opening and closing of the high-pressure air electromagnetic valve 5; during automatic control, the PLC control system 6 outputs 1 or 0 to realize the on-off of the relay, so as to control the opening and closing of the high-pressure air solenoid valve 5. When the device works, the output state of the PLC control system 6 is 1, the PLC control system 6 controls the relay to be electrified, so that the high-pressure air solenoid valve 5 is opened, and high-pressure air in the high-pressure air bag 7 sequentially passes through the high-pressure air bag pipeline, the high-pressure air solenoid valve 5 and the back-blowing pipeline 4 to enter the barrel branch pipeline 2, so that the barrel branch pipeline 2 is dredged; when the high-voltage electromagnetic valve does not work, the output state of the PLC control system 6 is 0, and the PLC control system 6 controls the relay to be powered off, so that the high-voltage electromagnetic valve 5 is closed.
The high-pressure air electromagnetic valve 5 is opened each time, the PLC control system 6 controls the relay to be electrified for 10s, after 10s, the PLC control system 6 automatically switches the output state to be 0, the relay is powered off, the high-pressure air electromagnetic valve 5 is closed, and one dredging operation is completed. 2 dredging operations are completed by the PLC control system 6 before each start, and the interval between the two dredging operations is 20s.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a coal preparation factory mixes and mediate bucket and medium bucket level sensor pipeline anti-blocking dredging system, includes main staving (1), its characterized in that still includes:
the barrel branch pipeline (2) is obliquely upwards arranged on the side wall of the main barrel body (1);
the back blowing pipeline (4) is arranged on the barrel body branch pipeline (2);
the high-pressure air bag (7) is connected with one end, far away from the barrel body branch pipeline (2), of the back-blowing pipeline (4) through a high-pressure air bag pipeline;
the high-pressure air solenoid valve (5), the high-pressure air solenoid valve (5) is set up in the high-pressure air ladle pipeline near one end of the back-blowing pipeline (4);
and the PLC control system (6) is connected with the high-pressure air electromagnetic valve (5) through signals, so that the high-pressure air electromagnetic valve (5) is controlled to be opened and closed.
2. The anti-blocking dredging system for the mixing drum and medium drum liquid level sensor pipeline of the coal preparation plant according to claim 1, wherein the back-blowing pipeline (4) is obliquely arranged on the drum body branch pipeline (2), and an included angle between the axis of the back-blowing pipeline (4) and the axis of the drum body branch pipeline (2) is 30-45 degrees.
3. The coal preparation plant mixing drum and medium drum liquid level sensor pipeline anti-blocking dredging system according to claim 1, further comprising a liquid level sensor (3), wherein the liquid level sensor (3) is arranged at one end of the drum body branch pipeline (2) far away from the main drum body (1).
4. The anti-blocking dredging system for the liquid level sensor pipelines of the mixing drum and the medium drum of the coal preparation plant according to claim 1 is characterized in that the wind pressure of the high-pressure wind bag (7) is 0.4-0.6 MPa.
5. The anti-blocking dredging system for the liquid level sensor pipelines of the mixing drum and the medium drum of the coal preparation plant according to claim 1 is characterized in that the PLC control system (6) controls the high-pressure air solenoid valve (5) to be opened and closed through a relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321789900.XU CN220311213U (en) | 2023-07-10 | 2023-07-10 | Anti-blocking dredging system for liquid level sensor pipelines of mixing drum and medium drum of coal preparation plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321789900.XU CN220311213U (en) | 2023-07-10 | 2023-07-10 | Anti-blocking dredging system for liquid level sensor pipelines of mixing drum and medium drum of coal preparation plant |
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| Publication Number | Publication Date |
|---|---|
| CN220311213U true CN220311213U (en) | 2024-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321789900.XU Active CN220311213U (en) | 2023-07-10 | 2023-07-10 | Anti-blocking dredging system for liquid level sensor pipelines of mixing drum and medium drum of coal preparation plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220311213U (en) |
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2023
- 2023-07-10 CN CN202321789900.XU patent/CN220311213U/en active Active
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