直落式木工除塵器依靠重力沉降與負(fù)壓抽吸結(jié)合的方式處理木屑粉塵，管路密封性直接決定除塵速率與運行穩(wěn)定，漏風(fēng)會引發(fā)風(fēng)量不足、粉塵逸散，還可能破壞設(shè)備內(nèi)部負(fù)壓平衡，導(dǎo)致木屑堆積堵塞，規(guī)范開展密封性檢查調(diào)試，是確定木工除塵系統(tǒng)穩(wěn)定運行的核心環(huán)節(jié)，以下為詳細(xì)要求解析。

The straight fall woodworking dust collector relies on a combination of gravity settling and negative pressure suction to process sawdust. The sealing of the pipeline directly determines the dust removal rate and stable operation. Air leakage can cause insufficient air volume, dust dispersion, and may also disrupt the internal negative pressure balance of the equipment, leading to sawdust accumulation and blockage. Standardized sealing inspection and debugging are the core links to determine the stable operation of the woodworking dust removal system. The following is a detailed analysis of the requirements.

檢查調(diào)試前穩(wěn)定與基礎(chǔ)準(zhǔn)備

Check stability and foundation preparation before debugging

正式開展密封性檢查調(diào)試前，需要完成穩(wěn)定確認(rèn)與前置準(zhǔn)備，規(guī)避作業(yè)風(fēng)險，確定檢測精度。起先斷開除塵器總電源，在電源開關(guān)處放置穩(wěn)定警示標(biāo)識，鎖定動力系統(tǒng)防止誤啟動，確認(rèn)風(fēng)機(jī)、卸灰閥等所有運動部件全部靜止后再開展作業(yè)，嚴(yán)禁帶電操作，避免觸電或旋轉(zhuǎn)部件傷人。

Before conducting formal sealing inspection and debugging, it is necessary to complete stability confirmation and pre preparation to avoid operational risks and determine testing accuracy. At first, disconnect the main power supply of the dust collector, place a stable warning sign at the power switch, lock the power system to prevent accidental start-up, confirm that all moving parts such as the fan and ash discharge valve are stationary before starting the operation, and strictly prohibit live operation to avoid electric shock or injury from rotating parts.

清理管路內(nèi)外附著的木屑、粉塵與雜物，管路內(nèi)壁殘留的積灰會掩蓋漏點，檢測時無法準(zhǔn)確定位，清理過程中注意不要磕碰管路接口，避免原本密封良好的部位出現(xiàn)松動漏風(fēng)。逐一檢查所有管路連接部位的外觀狀態(tài)，確認(rèn)法蘭、彎頭、變徑段、吸塵罩的連接螺栓沒有明顯松動，檢修門、清灰口的鎖扣都處于閉合狀態(tài)，沒有明顯縫隙，提前排除肉眼可見的大漏點，避免后續(xù)檢測時出現(xiàn)大范圍漏風(fēng)，影響檢測精度。

Clean the wood chips, dust, and debris attached inside and outside the pipeline. The residual dust on the inner wall of the pipeline will cover up the leakage point, making it difficult to accurately locate during inspection. During the cleaning process, be careful not to bump the pipeline interface to avoid loose air leakage in the originally well sealed parts. Check the appearance status of all pipeline connection parts one by one, confirm that the connecting bolts of flanges, elbows, variable diameter sections, and vacuum hoods are not significantly loose, and that the locks of the maintenance door and dust cleaning port are closed without obvious gaps. Eliminate visible large leakage points in advance to avoid large-scale air leakage during subsequent inspections, which may affect the accuracy of the inspection.

準(zhǔn)備好密封性檢測所需的工具，確認(rèn)檢測設(shè)備狀態(tài)完好，在車間劃定臨時作業(yè)區(qū)域，避免無關(guān)人員誤入碰撞管路，所有準(zhǔn)備工作完成后，再進(jìn)入正式檢測環(huán)節(jié)，不可以未做準(zhǔn)備就直接啟動設(shè)備檢測，避免漏風(fēng)引發(fā)粉塵二次逸散，污染車間環(huán)境。

Prepare the necessary tools for sealing testing, confirm that the testing equipment is in good condition, designate a temporary work area in the workshop to prevent unrelated personnel from accidentally entering and colliding with pipelines. After all preparation work is completed, proceed to the formal testing stage. Do not start the equipment testing without preparation to avoid secondary dust emission caused by air leakage and pollution of the workshop environment.

正壓鼓風(fēng)法全管路漏點排查

Investigation of leakage points in the entire pipeline using positive pressure blowing method

直落式木工除塵器的管路以負(fù)壓運行，采用正壓鼓風(fēng)法排查漏點，能準(zhǔn)確定位所有隱蔽漏點。在管路末端臨時封閉所有吸塵罩開口，在風(fēng)機(jī)出入口位置接入鼓風(fēng)裝置，向管路內(nèi)部送入潔凈氣流，讓管路內(nèi)部形成穩(wěn)定的微正壓環(huán)境，避免負(fù)壓狀態(tài)下外部氣流涌入，無法直觀觀察漏點。

The pipeline of the straight fall woodworking dust collector operates under negative pressure and uses positive pressure air blowing method to check for leaks, which can accurately locate all hidden leaks. Temporarily close all vacuum hood openings at the end of the pipeline, connect a blower device at the inlet and outlet of the fan, and send clean airflow into the pipeline to create a stable micro positive pressure environment inside the pipeline, avoiding external airflow from entering under negative pressure and making it difficult to visually observe the leakage point.

檢測過程中，采用發(fā)煙法配合排查，將用發(fā)煙裝置放置在管路內(nèi)部，發(fā)煙后沿著管路走向逐一巡查，觀察所有連接部位，有煙霧溢出的位置就是漏點，做好標(biāo)記。主要排查法蘭連接位置，法蘭密封墊容易出現(xiàn)老化變形、錯位安裝，是常見的漏風(fēng)位置，逐一確認(rèn)密封墊全部嵌入法蘭凹槽內(nèi)，沒有局部擠出、斷裂的情況，煙霧溢出說明密封墊存在縫隙，需要重新處理。

During the detection process, the smoking method is used to assist in the investigation. The smoking device is placed inside the pipeline, and after smoking, it is inspected one by one along the direction of the pipeline. All connection parts are observed, and the location where smoke overflows is the leak point, which is marked. The main focus of the inspection is on the flange connection position. The flange gasket is prone to aging, deformation, and misalignment during installation, which is a common air leakage location. It is necessary to confirm that the gasket is fully embedded in the flange groove without any local extrusion or breakage. Smoke overflow indicates that there are gaps in the gasket and it needs to be reprocessed.

同時排查管路焊接位置，木工除塵管路多為薄鋼板焊接，焊接縫隙容易出現(xiàn)沙眼、虛焊，長期受木屑磨損后會形成細(xì)小漏孔，煙霧溢出說明焊接位置存在缺陷，做好標(biāo)記后續(xù)補(bǔ)焊處理。還要排查檢修門、觀察窗的密封膠條，膠條長期使用會出現(xiàn)老化開裂，閉合后存在縫隙，也是常見漏點，發(fā)現(xiàn)膠條變形開裂的，標(biāo)記后愈換新的密封件。

At the same time, the welding position of the pipeline should be checked. Woodworking dust removal pipelines are mostly welded with thin steel plates, and the welding gaps are prone to sand holes and virtual welding. After long-term wear by wood chips, small leakage holes will form, and smoke overflow indicates that there are defects in the welding position. Mark them properly and carry out subsequent welding treatment. It is also necessary to check the sealing strips of the maintenance doors and observation windows. The sealing strips will age and crack after long-term use, and there will be gaps when closed, which is also a common leakage point. If the sealing strips are found to be deformed and cracked, they should be marked and replaced with new sealing components.

排查過程中不要遺漏管路變徑段、彎頭位置，這些部位長期受木屑沖刷，管壁容易磨穿形成漏孔，是隱蔽性較不錯的漏點，需要逐一仔細(xì)檢查，所有漏點全部標(biāo)記完成后，再停止鼓風(fēng)，不可以邊檢測邊處理，避免漏點遺漏。

During the inspection process, do not miss the variable diameter section and elbow position of the pipeline. These parts are easily eroded by sawdust for a long time, and the pipe wall is prone to wear through and form leakage holes. They are relatively concealed leakage points and need to be carefully inspected one by one. After all leakage points are marked, stop blowing air and do not handle them while detecting to avoid leakage points.

針對性密封整改調(diào)試

Targeted sealing rectification and debugging

所有漏點定位標(biāo)記完成后，針對性開展密封整改調(diào)試，去掉所有漏風(fēng)隱患。對于法蘭連接位置的漏點，先松開對角螺栓，取出舊密封墊，清理法蘭接觸面殘留的雜物與舊膠痕，替換全新的適配密封墊，密封墊要完整覆蓋整個法蘭端面，沒有缺口錯位，然后對角逐步緊固螺栓，確定法蘭四周受力均勻，密封墊均勻壓緊，不會出現(xiàn)局部縫隙，緊固完成后再次用煙條靠近檢測，確認(rèn)沒有煙霧溢出，說明密封合格。

After all leak point positioning marks are completed, targeted sealing rectification and debugging will be carried out to remove all potential air leakage hazards. For the leakage point at the flange connection position, first loosen the diagonal bolts, remove the old sealing gasket, clean up the remaining debris and old rubber marks on the flange contact surface, replace with a brand new adapter sealing gasket, and ensure that the sealing gasket covers the entire flange end face completely without any gaps or misalignments. Then gradually tighten the bolts diagonally to ensure that the stress around the flange is uniform, the sealing gasket is evenly compressed, and there are no local gaps. After tightening, use a tobacco rod to approach and check again to confirm that there is no smoke escaping, indicating that the sealing is qualified.

對于焊接位置的沙眼、虛焊漏點，先清理漏點周邊的木屑與銹跡，采用連續(xù)滿焊方式補(bǔ)焊，補(bǔ)焊后打磨焊渣，確認(rèn)焊接位置沒有新的縫隙，薄鋼板管壁磨穿形成的漏孔，不能直接打補(bǔ)丁焊接，要切割掉磨損段，愈換新的同規(guī)格管段，避免補(bǔ)丁周邊再次出現(xiàn)磨損漏風(fēng)。

For sand holes and virtual welding leaks in the welding position, first clean the sawdust and rust around the leak point, and use continuous full welding to repair the welding. After welding, polish the welding slag to confirm that there are no new gaps in the welding position. The thin steel plate pipe wall is worn through to form a leak hole, and cannot be directly patched and welded. The worn section should be cut off and replaced with a new pipe section of the same specification to avoid further wear and air leakage around the patch.

對于檢修門、觀察窗的密封膠條漏點，拆除老化開裂的舊膠條，清理安裝槽內(nèi)的殘留膠痕，粘貼全新的損密封膠條，確定膠條全部嵌入槽內(nèi)，沒有凸起錯位，閉合檢修門后調(diào)整鎖扣松緊度，讓膠條均勻受壓，全部填滿縫隙，按壓后沒有局部松動，確認(rèn)密封嚴(yán)密。

For the leakage points of the sealant strip of the access door and observation window, remove the old adhesive strip that is aging and cracking, clean the residual adhesive traces in the installation slot, paste a new damaged sealant strip, make sure that all the adhesive strips are embedded in the slot, and there is no bulge or dislocation. After closing the access door, adjust the tightness of the lock catch, so that the adhesive strip is evenly pressed, and all the gaps are filled. After pressing, there is no local looseness, and confirm that the seal is tight.