砂磨機(jī)的使用與維護(hù)

 

一、砂磨機(jī)試運(yùn)行

 

(一) .砂磨機(jī)試運(yùn)行前的準(zhǔn)備工作：

1、檢查各部件安裝是否緊固；

2、電接點(diǎn)、感應(yīng)點(diǎn)等配件的正確連接檢查；（見圖8/9）

3、設(shè)備運(yùn)動方向應(yīng)按箭頭所指方向運(yùn)轉(zhuǎn)(以點(diǎn)動試確認(rèn))；(見圖1)

4、檢查冷卻水路滲漏、通暢情況；

5、機(jī)械密封冷卻罐的冷卻液添加；（見圖10）

6、傳動皮帶調(diào)正適宜再啟動，工作48小時后，再校正一次；

7、從廠家指定加珠口加入研磨介質(zhì)；

8、先啟動輸料泵浦，輸入物料，15秒內(nèi)啟動主機(jī)；（主機(jī)與泵有聯(lián)鎖裝置，15秒不啟動主機(jī)，送料泵自動停止）

（二）.砂磨機(jī)試運(yùn)行時的工作

 

1、較長時間停機(jī)后，再啟動時，由于物料中的固體顆粒和研磨介質(zhì)沉降而“抱”緊分散器，（見圖11）尤其是粘稠性物料在較低溫度時，“剎車”現(xiàn)象尤為嚴(yán)重。此時，點(diǎn)動電機(jī)不能啟動時，在斷電條件下，用手在主軸皮帶輪助力轉(zhuǎn)動，以輸入少量對物料有溶解能力的稀釋劑，使物料稀釋松動后再啟動。總之，不能強(qiáng)行啟動，以免損壞電器和機(jī)體。

2、停機(jī)時間較長，保持管道與腔體內(nèi)部處于真空狀態(tài)（進(jìn)、出料口都滲入液體內(nèi)部的缸或罐中），并需清理篩網(wǎng)所堆積的物料。（見圖2、4）

3、清洗分散器，只能輕微地、間歇性地轉(zhuǎn)動，因?yàn)榉稚⑵骱脱心ソ橘|(zhì)在清洗液中快速運(yùn)轉(zhuǎn)極易損壞破碎（分散器一般都是高硬度材質(zhì)）。

4、在使用（添加）新研磨介質(zhì)時應(yīng)進(jìn)行過篩，以排除受磨后細(xì)小的研磨介質(zhì)和其它雜物。

 

二、故障

 

1.送料泵不啟動或工作中自停：

①：電源是否接通;

②：控制接觸器回位檢查；

③：電磁閥是否工作；（見圖6）

④：模塊是否松動。（見圖12）

2.主機(jī)不能啟動或工作中自停：

①：過流保護(hù)器是否熔斷;

②：機(jī)封保護(hù)液面是否發(fā)生變化；（機(jī)封見圖3，保護(hù)液見圖10）

③：三角帶是否太松;

④：分散器是否被卡??；

⑤：冷卻水注入是否發(fā)生變化，引起超溫。

3.電機(jī)負(fù)荷過大：

①：物料粘度是否過高;

②：研磨介質(zhì)是否填充過量

③：電器線路是否正常；

④：輸入物料速度是否過快，產(chǎn)生壓力過高。

4.進(jìn)料泵工作不正常：（見圖5）

①：管道是否漏氣，油水分離器的水份排泄;（見圖7）

 ②：進(jìn)料管是否堵塞

③：進(jìn)料泵是否已嚴(yán)重磨損;

④：物料粘度是否過高。

5.生產(chǎn)效率下降：

①：研磨介質(zhì)是否太少;

②：分散器是否已過度磨損；

③：前期分散時間是否改變；

④：原材料是否發(fā)生變化。

 

 

Use and maintenance of wet grinding machine

 

First, the trial run of the grinder

 

(1) Preparations for the grinding machine before commissioning:

1. Check whether the components are tightly installed;

2. Check the correct connection of electrical contacts, sensing points, etc. (see Figure 8/9)

3. The direction of movement of the equipment should be in the direction indicated by the arrow (confirmed by jog test); (see Figure 1)

4. Check the leakage and patency of the cooling waterway;

5. Add coolant to the mechanical seal cooling tank; (see Figure 10)

6. The transmission belt adjustment is suitable for restarting. After 48 hours of operation, it is corrected again.

7. Adding grinding media from the designated bead of the manufacturer;

8. Start the fuel pump first, input the material, start the host within 15 seconds; (the host and the pump have an interlock device, the host will not start for 15 seconds, the feed pump will stop automatically)

(2). Work when the grinder is in trial operation

 

1. After a long time of shutdown, when restarting, the solid particles and zirconia beads in the material settle and “carry” the disperser, (see Figure 11), especially when the viscous material is at a lower temperature, “brake The phenomenon is particularly serious. At this time, when the jog motor cannot be started, under the power-off condition, the hand pulley is assisted to rotate by hand to input a small amount of diluent which has the ability to dissolve the material, so that the material is diluted and then started. In short, you can't force it to start, so as not to damage the appliance and the body.

2. The downtime is long, and the inside of the pipeline and the cavity are kept in a vacuum state (the inlet and outlet ports are all infiltrated into the cylinder or tank inside the liquid), and the materials accumulated in the screen are cleaned. (See Figures 2 and 4)

3. The disperser is cleaned and can only be rotated slightly and intermittently, because the disperser and zirconia beads are easily damaged in the fast running in the cleaning solution (the dispersers are generally high hardness materials).

4. When using (adding) new grinding media, it should be sieved to remove fine zirconia beads and other debris after grinding.

 

Second, the fault

 

(1). The feed pump does not start or stops during work:

1: Whether the power is turned on;

2: Control contactor return check;

3: Whether the solenoid valve works; (see Figure 6)

4: Is the module loose? (See Figure 12)

(2). The host can't start or stop at work:

1: Whether the overcurrent protector is blown;

2: Whether the machine seal protects the liquid surface; (see Figure 3 for the machine seal and Figure 10 for the protective liquid)

3: Is the V-belt too loose?

4: Whether the disperser is stuck;

5: Whether the cooling water injection changes, causing over-temperature.

(3). Motor load is too large:

1: Whether the viscosity of the material is too high;

2: Whether the grinding media is overfilled

3: Is the electrical circuit normal?

4: If the input material speed is too fast, the pressure is too high.

(4). The feed pump is not working properly (see Figure 5)

1: Whether the pipeline leaks and the water in the oil-water separator is drained; (see Figure 7)

 2: Whether the feed pipe is blocked

3: Whether the feed pump has been seriously worn;

4: Whether the viscosity of the material is too high.

(5). Reduced production efficiency:

1: Is the grinding medium too small;

2: Whether the disperser has been excessively worn;

3: Whether the pre-distribution time has changed;

4: Whether the raw materials have changed.