Mechanical backstepping type control method for movement of incinerator grate

Abstract

The application discloses a mechanical reverse pushing type incinerator grate movement control method, and the method comprises a grate sequential movement mode, and the steps are as follows: opening corresponding forward electromagnetic valves of a first column of grates and a third column of grates, and adjusting the action speed of the first column of grates and the third column of grates to a first speed; simultaneously, opening corresponding backward electromagnetic valves of a second column of grates and a fourth column of grates, controlling the second column of grates and the fourth column of grates to be in a backward running state, and adjusting the action speed of the second column of grates and the fourth column of grates to the first speed; when the first column of grates and the third column of grates are detected to advance to a position, the action speed of the first column of grates and the third column of grates is adjusted to a second speed; when the second column of grates and the fourth column of grates are detected to retreat to a position, the action speed of the second column of grates and the fourth column of grates is adjusted to the second speed. The method can be well used for the reverse pushing type incinerator grate, and the incineration efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a mechanical reverse push type incineration grate movement control method. BACKGROUND

[0002] At present, garbage incineration power generation is an effective way to harmlessly, reduce and recycle the garbage, garbage incineration treatment not only can take environmental protection effect, at the same time, the waste heat of garbage incineration can produce steam for power generation, heat supply, energy saving, which is a better resource recycling way. The incineration grate is one of the core equipment of garbage incineration, the patent with the publication number CN209458957U discloses a feeding grate control device, which controls the forward and backward movement of the feeding grate through the forward electromagnetic valve and the backward electromagnetic valve, and controls the running speed of the grate through the proportional valve, which can reduce the frequent manual intervention of the control system and reduce the labor intensity of the operator, but it does not give the specific control logic and does not further improve the incineration efficiency of the grate. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the defects of the prior art and provide a mechanical reverse push type incineration grate movement control method which can be well used in the reverse push type incineration grate and can improve the incineration efficiency.

[0004] In order to solve the above technical problems, the technical scheme of the present application is as follows: a mechanical reverse push type incineration grate movement control method, the mechanical reverse push type incineration grate includes four sub-grates arranged obliquely downward from left to right in sequence, which are respectively a first column of grates, a second column of grates, a third column of grates and a fourth column of grates, the opening and closing of the forward running state of the sub-grate is controlled by the corresponding forward electromagnetic valve, and the opening and closing of the backward running state of the sub-grate is controlled by the corresponding backward electromagnetic valve; the method includes a grate sequential movement mode, and the steps of the grate sequential movement mode are as follows:

[0005] S01: open the corresponding forward electromagnetic valves of the first column of grates and the third column of grates, control the first column of grates and the third column of grates to be in the forward running state and adjust the action speed of the first column of grates and the third column of grates to the first speed, at the same time, open the corresponding backward electromagnetic valves of the second column of grates and the fourth column of grates, control the second column of grates and the fourth column of grates to be in the backward running state and adjust the action speed of the second column of grates and the fourth column of grates to the first speed;

[0006] S02: when the first column of grates and the third column of grates are detected to be advanced to the position, the action speed of the first column of grates and the third column of grates is adjusted to the second speed; when the second column of grates and the fourth column of grates are detected to be retreated to the position, the action speed of the second column of grates and the fourth column of grates is adjusted to the second speed; the second speed is lower than the first speed;

[0007] S03: time delay for a first set time, start the reset command;

[0008] S04: time delay for a second set time, close the forward electromagnetic valve corresponding to the first and third rows of the grate and the backward electromagnetic valve corresponding to the second and fourth rows of the grate;

[0009] S05: open the backward electromagnetic valve of the first and third rows of the grate, control the first and third rows of the grate to be in the backward running state and adjust the action speed of the first and third rows of the grate to the first speed, at the same time, open the forward electromagnetic valve of the second and fourth rows of the grate, control the second and fourth rows of the grate to be in the forward running state and adjust the action speed of the second and fourth rows of the grate to the first speed;

[0010] S06: when the first and third rows of the grate are detected to be backward to the position, adjust the action speed of the first and third rows of the grate to the second speed; when the second and fourth rows of the grate are detected to be forward to the position, adjust the action speed of the second and fourth rows of the grate to the second speed;

[0011] S07: time delay for a first set time, start the reset command;

[0012] S08: time delay for a second set time, close the forward electromagnetic valve of the second and fourth rows of the grate and the backward electromagnetic valve of the first and third rows of the grate.

[0013] Further, the steps of the grate sequential movement mode further comprise S09: return to step S01 to restart the operation.

[0014] Further, the first set time is 5s and / or the second set time is 500ms.

[0015] Further, the method further comprises a grate emergency operation mode, and each sub-grate in the grate emergency operation mode is operated in the following movement sequence:

[0016] B01: burn forward to set, open the forward electromagnetic valve of the corresponding sub-grate to control the sub-grate to be in the forward running state, and adjust the action speed of the sub-grate to the first speed;

[0017] B02: the sub-grate detects forward to the position, adjusts the action speed of the sub-grate to the second speed, time delay for a third set time, and closes the forward electromagnetic valve of the corresponding sub-grate;

[0018] B03: time delay for a fourth set time, start the reset forward command;

[0019] B04: open the backward electromagnetic valve of the corresponding sub-grate, control the sub-grate to be in the backward running state, and adjust the action speed of the sub-grate to the first speed;

[0020] B05: The sub-grate detects the retreat to position, adjusts the action speed of the sub-grate to the second speed; delays for the fifth set time, and closes the retreat electromagnetic valve of the corresponding sub-grate;

[0021] B06: Delays for the sixth set time, and starts the reset retreat command;

[0022] B07: Returns to B01 step to re-run.

[0023] Further, the action speed adjustment of the sub-grate is controlled through the opening degree of the corresponding proportional valve.

[0024] Further, the action speed of the sub-grate when running at full speed is 100%; wherein the first speed is 80%, and the second speed is 30%.

[0025] Further, the third set time is 3s and / or the fourth set time is 5s and / or the fifth set time is 3s and / or the sixth set time is 5s.

[0026] Further, when the position sensor in part of the sub-grate fails, the grate sequential movement mode is stopped, the grate emergency running mode is manually started, and the grate emergency running mode is automatically stopped after exceeding the seventh set time.

[0027] Further, the seventh set time is 60 minutes.

[0028] After the above technical scheme is adopted, after the grate sequential movement mode of the mechanical reverse push type incineration grate is started, the adjacent sub-grates adopt asynchronous running, and are independent of each other and are not affected, when a column of sub-grates happens to be close to the mechanical terminal, the feeding signal is stopped, however, the delay time has been started at this time. The grate column will not stop, and will continue to move until the entire mechanical terminal stroke (delay time plus reversing time) is completed; when the position sensor in part of the sub-grate fails, the sub-grate no longer obeys the asynchronous running condition, the grate emergency running mode is manually started, and the grate emergency running mode is automatically stopped after exceeding 60 minutes. The grate emergency running mode is started, the incineration grate no longer obeys the asynchronous mode, and each sub-grate independently runs and does not interfere with each other. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a control schematic diagram of the grate of the present application. DETAILED DESCRIPTION

[0030] In order to make the content of the present application more easily understood, the present application is further described in detail below according to specific embodiments and in combination with the drawings.

[0031] The reverse moving grate is a mechanical reverse moving grate which is inclined at a certain angle. It is composed of several rows of sliding grates and fixed grates. Its operation mode is: the grate plate moves upward, which is opposite to the direction of the natural falling of the garbage. As a result, when the grate moves upward, the burning garbage is continuously pushed down from the unburned garbage, and in this way the grate can thoroughly mix the garbage. In the embodiment, the mechanical reverse moving grate includes four sub-grates arranged obliquely downward from left to right in sequence, which are respectively the first column of grates, the second column of grates, the third column of grates and the fourth column of grates.

[0032] Specifically, as shown in Figure 1 , the forward movement of the sub-grate is controlled by the corresponding forward electromagnetic valve, the backward movement of the sub-grate is controlled by the corresponding backward electromagnetic valve, and the action speed of the sub-grate is adjusted by the opening degree of the corresponding proportional valve. This is the prior art, and the specific structure can refer to the Chinese patent No. CN209458957U for a feeding grate control device.

[0033] As shown in Figure 1 , the embodiment provides a mechanical reverse moving grate movement control method, which includes a grate sequential movement mode. The steps of the grate sequential movement mode are as follows:

[0034] S01: open the forward electromagnetic valves corresponding to the first column of grates and the third column of grates, control the first column of grates and the third column of grates to be in the forward running state and adjust the action speed of the first column of grates and the third column of grates to the first speed, at the same time open the backward electromagnetic valves corresponding to the second column of grates and the fourth column of grates, control the second column of grates and the fourth column of grates to be in the backward running state and adjust the action speed of the second column of grates and the fourth column of grates to the first speed;

[0035] S02: when the first column of grates and the third column of grates are detected to be advanced to the position, the action speed of the first column of grates and the third column of grates is adjusted to the second speed; when the second column of grates and the fourth column of grates are detected to be retreated to the position, the action speed of the second column of grates and the fourth column of grates is adjusted to the second speed; the second speed is lower than the first speed; in the embodiment, the forward to position and the backward to position can be detected by the position sensor;

[0036] S03: delay for a first set time, and start the reset command;

[0037] S04: delay for a second set time, close the forward electromagnetic valves corresponding to the first column of grates and the third column of grates, and close the backward electromagnetic valves corresponding to the second column of grates and the fourth column of grates;

[0038] S05: open the retreat electromagnetic valves of the first and third rows of the grate, control the first and third rows of the grate to be in the retreat running state and adjust the action speed of the first and third rows of the grate to the first speed, at the same time, open the advance electromagnetic valves of the second and fourth rows of the grate, control the second and fourth rows of the grate to be in the advance running state and adjust the action speed of the second and fourth rows of the grate to the first speed;

[0039] S06: when the first and third rows of the grate are detected to retreat to the position, adjust the action speed of the first and third rows of the grate to the second speed; when the second and fourth rows of the grate are detected to advance to the position, adjust the action speed of the second and fourth rows of the grate to the second speed;

[0040] S07: delay for a first set time, start the reset command;

[0041] S08: delay for a second set time, close the advance electromagnetic valves of the second and fourth rows of the grate and the retreat electromagnetic valves of the first and third rows of the grate.

[0042] Specifically, in the embodiment, the step of the grate sequential movement mode further comprises S09: return to step S01 to restart the operation.

[0043] Specifically, the first set time can be set to 5s, and the second set time can be set to 500ms.

[0044] Specifically, the method further comprises a grate emergency operation mode, and each sub-grate in the grate emergency operation mode is operated according to the following movement sequence:

[0045] B01: set the advance position before incineration, open the advance electromagnetic valve of the corresponding sub-grate to control the sub-grate to be in the advance running state, and adjust the action speed of the sub-grate to the first speed;

[0046] B02: the sub-grate detects the advance to the position, adjusts the action speed of the sub-grate to the second speed, delays for a third set time, and closes the advance electromagnetic valve of the corresponding sub-grate;

[0047] B03: delay for a fourth set time, start the reset advance command;

[0048] B04: open the retreat electromagnetic valve of the corresponding sub-grate, control the sub-grate to be in the retreat running state, and adjust the action speed of the sub-grate to the first speed;

[0049] B05: the sub-grate detects the retreat to the position, adjusts the action speed of the sub-grate to the second speed, delays for a fifth set time, and closes the retreat electromagnetic valve of the corresponding sub-grate;

[0050] B06: Delay for a sixth set time, start the reset backward command;

[0051] B07: Return to B01 step to re-run.

[0052] Specifically, the action speed of the sub-grate full-speed operation is 100%; wherein the first speed can be set to 80%, and the second speed can be set to 30%.

[0053] Specifically, the third set time can be set to 3s, the fourth set time can be set to 5s, the fifth set time can be set to 3s, and the sixth set time can be set to 5s.

[0054] Specifically, when the position sensor in part of the sub-grate fails, the grate sequential movement mode is stopped, the grate emergency operation mode is manually started, and the grate emergency operation mode is automatically stopped after exceeding the seventh set time.

[0055] Specifically, the seventh set time can be set to 60 minutes.

[0056] Of course, in some embodiments, the first speed and the second speed can also be set to other quantities, which are not limited thereto, and the first to seventh set times can also be set to other times, which are not limited thereto.

[0057] The above-described specific embodiments further detail the technical problems solved by the present application, technical solutions, and beneficial effects. It should be understood that the above-described specific embodiments are merely specific embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A mechanical reverse push type grate movement control method, the mechanical reverse push type grate comprising four sub-grates arranged obliquely downward from left to right in sequence, respectively a first column of grates, a second column of grates, a third column of grates and a fourth column of grates, characterized in that, The opening and closing of the forward running state of the sub-grate is controlled by the corresponding forward electromagnetic valve, and the opening and closing of the backward running state of the sub-grate is controlled by the corresponding backward electromagnetic valve; the method comprises a grate sequential movement mode, and the steps of the grate sequential movement mode are as follows: S01: open the forward electromagnetic valves corresponding to the first column of grates and the third column of grates, control the first column of grates and the third column of grates to be in the forward running state and adjust the movement speed of the first column of grates and the third column of grates to the first speed, simultaneously open the backward electromagnetic valves corresponding to the second column of grates and the fourth column of grates, control the second column of grates and the fourth column of grates to be in the backward running state and adjust the movement speed of the second column of grates and the fourth column of grates to the first speed; S02: when the first column of grates and the third column of grates are detected to be advanced to the position, the movement speed of the first column of grates and the third column of grates is adjusted to the second speed; when the second column of grates and the fourth column of grates are detected to be retreated to the position, the movement speed of the second column of grates and the fourth column of grates is adjusted to the second speed; the second speed is lower than the first speed; S03: delay for a first set time, and start a reset command; S04: delay for a second set time, and close the forward electromagnetic valves corresponding to the first column of grates and the third column of grates and the backward electromagnetic valves corresponding to the second column of grates and the fourth column of grates; S05: open the backward electromagnetic valves of the first column of grates and the third column of grates, control the first column of grates and the third column of grates to be in the backward running state and adjust the movement speed of the first column of grates and the third column of grates to the first speed, simultaneously open the forward electromagnetic valves of the second column of grates and the fourth column of grates, control the second column of grates and the fourth column of grates to be in the forward running state and adjust the movement speed of the second column of grates and the fourth column of grates to the first speed; S06: when the first column of grates and the third column of grates are detected to be retreated to the position, the movement speed of the first column of grates and the third column of grates is adjusted to the second speed; when the second column of grates and the fourth column of grates are detected to be advanced to the position, the movement speed of the second column of grates and the fourth column of grates is adjusted to the second speed; S07: delay for a first set time, and start a reset command; S08: delay for a second set time, and close the forward electromagnetic valves of the second column of grates and the fourth column of grates and the backward electromagnetic valves of the first column of grates and the third column of grates; The method further comprises a grate emergency movement mode, and each sub-grate in the grate emergency movement mode is operated according to the following movement sequence: B01: advance to the position, open the forward electromagnetic valve of the corresponding sub-grate, control the sub-grate to be in the forward running state, and adjust the movement speed of the sub-grate to the first speed; B02: when the sub-grate is detected to be advanced to the position, the movement speed of the sub-grate is adjusted to the second speed, delay for a third set time, and close the forward electromagnetic valve of the corresponding sub-grate; B03: delay for a fourth set time, and start a reset forward command; B04: open the backward electromagnetic valve of the corresponding sub-grate, control the sub-grate to be in the backward running state, and adjust the movement speed of the sub-grate to the first speed; B05: when the sub-grate is detected to be retreated to the position, the movement speed of the sub-grate is adjusted to the second speed; delay for a fifth set time, and close the backward electromagnetic valve of the corresponding sub-grate; B06: Delay for a sixth set time, start the reset backward command; B07: Return to B01 step to restart running; When the position sensor in part of the sub-stoker appears failure, stop the stoker sequence movement mode, manually start the stoker emergency movement mode, and automatically stop the stoker emergency movement mode after exceeding a seventh set time.

2. The method of claim 1, wherein, The steps of the stoker sequence movement mode further comprise S09: return to step S01 to restart running.

3. The method of claim 1, wherein, the first set time is 5s and / or the second set time is 500ms.

4. The method of claim 1, wherein, the action speed adjustment of the sub-stoker is controlled by the opening of the corresponding proportional valve.

5. The method of claim 1, wherein, the action speed of the sub-stoker running at full speed is 100%; wherein the first speed is 80% and the second speed is 30%.

6. The method of claim 1, wherein, the third set time is 3s and / or the fourth set time is 5s and / or the fifth set time is 3s and / or the sixth set time is 5s.

7. The method of claim 6, wherein, the seventh set time is 60 minutes.

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