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<title>低压控制电路设计 - 刮筛、水泵、转筛</title>
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</style>
</head>
<body>
<div class="container">
<header>
<h1>低压控制电路设计方案</h1>
<p class="subtitle">刮筛、水泵、转筛设备控制系统(手/自动模式)</p>
</header>
<div class="content">
<div class="panel requirements">
<h2 class="panel-title">设计要求</h2>
<ul>
<li>控制系统采用<strong>低压(24V DC)</strong>电路设计</li>
<li>设备具有<strong>手动和自动</strong>两种运行模式</li>
<li><strong>刮筛设备</strong>24小时持续运行</li>
<li>自动模式下,<strong>水泵和转筛</strong>由浮球液位开关控制</li>
<li>自动模式下,<strong>水泵和转筛同时启动</strong></li>
<li>手动模式下,可单独控制水泵和转筛</li>
</ul>
<h3 class="panel-title">设备说明</h3>
<ul>
<li><strong>刮筛设备</strong>: 24小时连续运行,不受模式切换影响</li>
<li><strong>水泵设备</strong>: 在自动模式下受液位控制,手动模式下可单独启停</li>
<li><strong>转筛设备</strong>: 与水泵联动,在自动模式下与水泵同时启停</li>
</ul>
</div>
<div class="panel">
<h2 class="panel-title">图例说明</h2>
<div class="legend">
<div class="legend-item">
<div class="symbol symbol-power">QF</div>
<span>断路器/电源</span>
</div>
<div class="legend-item">
<div class="symbol symbol-protection">FR</div>
<span>热继电器</span>
</div>
<div class="legend-item">
<div class="symbol symbol-contactor">KM</div>
<span>接触器</span>
</div>
<div class="legend-item">
<div class="symbol symbol-relay">KA</div>
<span>继电器</span>
</div>
<div class="legend-item">
<div class="symbol symbol-switch">SA</div>
<span>模式选择开关</span>
</div>
<div class="legend-item">
<div class="symbol symbol-sensor">SL</div>
<span>浮球液位开关</span>
</div>
<div class="legend-item">
<div class="symbol symbol-switch">SB</div>
<span>按钮开关</span>
</div>
<div class="legend-item">
<div class="symbol symbol-load">M</div>
<span>电机负载</span>
</div>
</div>
<h3 class="panel-title" style="margin-top: 25px;">控制逻辑说明</h3>
<p>在<strong>自动模式</strong>下:</p>
<ul>
<li>当液位达到高水位时,浮球开关SL闭合</li>
<li>继电器KA得电,其常开触点闭合</li>
<li>接触器KM1(水泵)和KM2(转筛)同时得电</li>
<li>水泵和转筛设备同时启动</li>
</ul>
<p>在<strong>手动模式</strong>下:</p>
<ul>
<li>可通过按钮SB1/SB2独立控制水泵启停</li>
<li>可通过按钮SB3/SB4独立控制转筛启停</li>
<li>刮筛设备在任何模式下都持续运行</li>
</ul>
</div>
</div>
<div class="circuit-diagram">
<h2 class="diagram-title">控制电路原理图</h2>
<div class="circuit-container">
<div class="circuit-grid">
<!-- 电源部分 -->
<div class="grid-item power">24V DC 电源 +</div>
<div class="grid-item line">→</div>
<div class="grid-item breaker">QF1<br>主断路器</div>
<div class="grid-item line">→</div>
<div class="grid-item breaker">QF2<br>控制断路器</div>
<div class="grid-item line">→</div>
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<!-- 急停部分 -->
<div class="grid-item line"></div>
<div class="grid-item line">→</div>
<div class="grid-item switch">ES<br>急停按钮<br>(常闭)</div>
<div class="grid-item line">→</div>
<div class="grid-item protection">FR0<br>刮筛热保护</div>
<div class="grid-item line">→</div>
<div class="grid-item contactor">KM0<br>刮筛接触器</div>
<div class="grid-item line">→</div>
<div class="grid-item line">24V -</div>
<!-- 水泵/转筛公共部分 -->
<div class="grid-item line"></div>
<div class="grid-item line">→</div>
<div class="grid-item protection">FR1<br>水泵热保护</div>
<div class="grid-item line">→</div>
<div class="grid-item protection">FR2<br>转筛热保护</div>
<div class="grid-item line">→</div>
<div class="grid-item switch">SA<br>模式选择<br>开关</div>
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<!-- 手动模式分支 -->
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<div class="grid-item line">(手动)</div>
<div class="grid-item line">→</div>
<div class="grid-item switch">SB2<br>水泵停止</div>
<div class="grid-item line">→</div>
<div class="grid-item switch">SB1<br>水泵启动</div>
<div class="grid-item line">→</div>
<div class="grid-item contactor">KM1<br>水泵接触器</div>
<!-- 手动模式分支 -->
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<div class="grid-item line">(手动)</div>
<div class="grid-item line">→</div>
<div class="grid-item switch">SB4<br>转筛停止</div>
<div class="grid-item line">→</div>
<div class="grid-item switch">SB3<br>转筛启动</div>
<div class="grid-item line">→</div>
<div class="grid-item contactor">KM2<br>转筛接触器</div>
<!-- 自动模式分支 -->
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<div class="grid-item line">(自动)</div>
<div class="grid-item line">→</div>
<div class="grid-item sensor">SL<br>浮球液位开关<br>(高水位闭合)</div>
<div class="grid-item line">→</div>
<div class="grid-item relay">KA<br>控制继电器</div>
<div class="grid-item line">→</div>
<div class="grid-item line">24V -</div>
<!-- 自动模式执行部分 -->
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<div class="grid-item line">→</div>
<div class="grid-item relay">KA<br>常开触点</div>
<div class="grid-item line">→</div>
<div class="grid-item contactor">KM1<br>水泵接触器</div>
<div class="grid-item line">→</div>
<div class="grid-item line">24V -</div>
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<div class="grid-item line">→</div>
<div class="grid-item relay">KA<br>常开触点</div>
<div class="grid-item line">→</div>
<div class="grid-item contactor">KM2<br>转筛接触器</div>
<div class="grid-item line">→</div>
<div class="grid-item line">24V -</div>
<!-- 负载部分 -->
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<div class="grid-item line"></div>
<div class="grid-item load">M0<br>刮筛电机</div>
<div class="grid-item load">M1<br>水泵电机</div>
<div class="grid-item load">M2<br>转筛电机</div>
</div>
</div>
<div class="explanation">
<h3>电路工作原理说明:</h3>
<p>1. <strong>刮筛控制回路</strong>:刮筛设备通过KM0接触器控制,24小时连续运行,仅受急停(ES)和热保护(FR0)影响</p>
<p>2. <strong>模式选择</strong>:SA模式选择开关决定系统工作状态(手动/自动)</p>
<p>3. <strong>自动模式</strong>:当液位达到高位时,浮球开关SL闭合 → 继电器KA得电 → KA常开触点闭合 → KM1和KM2同时得电 → 水泵和转筛同时启动</p>
<p>4. <strong>手动模式</strong>:通过独立按钮控制:
<ul>
<li>SB1/SB2控制水泵启停</li>
<li>SB3/SB4控制转筛启停</li>
</ul>
</p>
<p>5. <strong>保护功能</strong>:所有回路均配备热继电器(FR)提供过载保护,急停按钮(ES)可立即切断所有设备电源</p>
</div>
<h3 class="panel-title" style="margin-top: 30px;">设备操作状态表</h3>
<table class="operation-table">
<thead>
<tr>
<th>运行模式</th>
<th>刮筛状态</th>
<th>水泵状态</th>
<th>转筛状态</th>
<th>控制方式</th>
</tr>
</thead>
<tbody>
<tr>
<td>自动模式 (高水位)</td>
<td>运行</td>
<td>运行</td>
<td>运行</td>
<td>浮球开关控制</td>
</tr>
<tr>
<td>自动模式 (低水位)</td>
<td>运行</td>
<td>停止</td>
<td>停止</td>
<td>浮球开关控制</td>
</tr>
<tr>
<td>手动模式 (水泵启动)</td>
<td>运行</td>
<td>运行</td>
<td>停止</td>
<td>按钮控制</td>
</tr>
<tr>
<td>手动模式 (转筛启动)</td>
<td>运行</td>
<td>停止</td>
<td>运行</td>
<td>按钮控制</td>
</tr>
<tr>
<td>手动模式 (全部停止)</td>
<td>运行</td>
<td>停止</td>
<td>停止</td>
<td>按钮控制</td>
</tr>
<tr>
<td>急停状态</td>
<td>停止</td>
<td>停止</td>
<td>停止</td>
<td>急停按钮</td>
</tr>
</tbody>
</table>
</div>
<footer>
<p>低压控制系统设计 | 刮筛、水泵、转筛设备 | 手/自动模式控制</p>
<p>(c) 2023 工业控制系统设计</p>
</footer>
</div>
</body>
</html>
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