隔膜計量泵的故障解決方法及安裝密封件時的注意事項
隔膜計量泵作為一種理想的化學加藥設備，已經廣泛應用于石化、化工、油氣田、電力、造紙、制藥、環保、水處理等領域。在全球范圍內，經過近70年的實際應用和技術發展，市場需求進入了穩定增長時期。在中國，隨著經濟的穩定和可持續發展，未來幾年市場規模將呈現持續快速增長的趨勢。隨著經濟水平的提高，人們的生活水平也相應提高，人們對飲用水的純度和安全性要求越來越高。同時因為自然環境越來越差，同一個家庭的付出也越來越多。特別是近年來，國家加大了對環境保護的監管和投入。因此，環保和水處理市場將在未來幾年迅速增長。造紙、制藥等行業約占計量泵市場份額的10%。未來幾年也將保持一定的增長速度。
計量泵的流量不隨壓力變化，在工作和非工作條件下均可線性調節0-100%。
一泵雙頭設計，使一泵同時測量不同介質的應用成為現實，既節省空間，又降低成本。
鏡面反射設計允許活塞法蘭和計量頭自由安裝在驅動齒輪的左右兩側，現場安裝靈活。
模塊化設計，方便現場安裝維護。
本產品內置超壓安全保護閥，省去了一般計量泵安裝旁路的麻煩，節省了空間，增加了產品使用的安全性。
計量泵流量的調節可通過柱塞法蘭上的手動旋鈕、變頻器、伺服電機等實現。隔膜計量泵的流量不隨壓力的變化而變化，在靜態和工作狀態下可線性調節0-100%。調節精度高。空柱塞不固定在電機的偏心輪上，柱塞在吸入沖程中彈回零位，有效防止吸入介質在計量頭內形成堵塞時損壞泵。
在柱塞隔膜計量泵中，空心柱塞由驅動齒輪2驅動往復運動，計量隔膜由空心柱塞中的液壓油驅動。空心柱塞有專門設計的調節空間，使柱塞內外的液壓油相同。柱塞覆蓋有一個可調節的滑環，用于關閉和調節空間。當調節孔關閉時，柱塞推入液壓油以驅動計量隔膜。在每個沖程中，由柱塞推動以驅動計量隔膜的液壓油的量正好等于計量介質的量。
在計量泵上安裝密封件需要注意哪些事項？
使用龍亞系列隔膜計量泵時，請仔細閱讀說明！
1.不要損壞密封表面或密封表面的密封線。平面密封的密封性能取決于上下端面；液壓密封件的密封性能取決于與孔或軸相關的唇線。這些零件由石墨、橡膠、塑料、纖維等柔軟有彈性的特殊材料制成，容易損壞。因此，在運輸、安裝和儲存過程中，更需要給予特殊的保護和照顧。一旦損壞，往往會給密封部件留下很大的隱患；2.安裝時注意平衡和對稱。將密封件放在靠近有效密封面(或唇線)的位置。系統投入使用后，需要做好緊固密封的進一步觀察和善后工作，防止系統工作過程中因工況變化(如增壓)而出現微泄漏而導致的崩潰。3.不要強行安裝VAREM計量泵，施工時不要野蠻粗暴。大動作的強制加載，必然會破壞密封件原有的預制結構，就像把預制混凝土打碎填充到需要的部位，必然會導致災難。這類密封件的安裝一定要非常小心謹慎，埋設一定要循序漸進；
Troubleshooting of diaphragm metering pump and matters needing attention when installing seals
As an ideal chemical dosing equipment, diaphragm metering pump has been widely used in petrochemical, chemical, oil and gas fields, electric power, papermaking, pharmaceutical, environmental protection, water treatment and other fields. Worldwide, after nearly 70 years of practical application and technology development, market demand has entered a period of stable growth. In China, with the stable and sustainable development of economy, the market scale will continue to grow rapidly in the next few years. With the improvement of economic level, people's living standards are also improved accordingly, people's requirements for the purity and safety of drinking water are higher and higher. At the same time, because the natural environment is getting worse and worse, the same family is paying more and more. Especially in recent years, the state has increased the supervision and investment in environmental protection. Therefore, the environmental protection and water treatment market will grow rapidly in the next few years. Papermaking, pharmaceutical and other industries account for about 10% of the metering pump market share. It will also maintain a certain growth rate in the next few years.
The flow rate of the metering pump does not change with the pressure, and can be adjusted linearly by 0-100% under working and non working conditions.
The design of one pump with two heads makes the application of one pump to measure different media at the same time a reality, which not only saves space, but also reduces the cost.
The mirror reflection design allows the piston flange and metering head to be freely installed on the left and right sides of the drive gear, which makes the installation flexible on site.
Modular design, convenient for field installation and maintenance.
This product has built-in overpressure safety protection valve, which saves the trouble of installing bypass of general metering pump, saves space, and increases the safety of the product.
The flow of metering pump can be adjusted by manual knob, frequency converter and servo motor on the plunger flange. The flow rate of the metering pump does not change with the change of pressure, and can be linearly adjusted by 0-100% under static and working conditions. High adjustment accuracy. The empty plunger is not fixed on the eccentric wheel of the motor, and the plunger springs back to the zero position during the suction stroke, which effectively prevents the pump from being damaged when the suction medium is blocked in the metering head.
In the plunger diaphragm metering pump, the hollow plunger is driven by the drive gear 2 to move back and forth, and the metering diaphragm is driven by the hydraulic oil in the hollow plunger. The hollow plunger has a specially designed adjusting space, so that the hydraulic oil inside and outside the plunger is the same. The plunger is covered with an adjustable slip ring for closing and adjusting the space. When the adjusting hole is closed, the plunger pushes hydraulic oil to drive the metering diaphragm. In each stroke, the amount of hydraulic oil pushed by the plunger to drive the metering diaphragm is exactly equal to the amount of metering medium.
What should be paid attention to when installing seals on metering pump?
Please read the instructions carefully when using Longya series metering pump!
1. Do not damage the sealing surface or the sealing line of the sealing surface. The sealing performance of the plane seal depends on the upper and lower face; the sealing performance of the hydraulic seal depends on the lip line related to the hole or shaft. These parts are made of graphite, rubber, plastic, fiber and other soft and elastic special materials, which are easy to damage. Therefore, special protection and care are needed during transportation, installation and storage. Once damaged, it will leave a great hidden danger to the sealing parts; 2. Pay attention to the balance and symmetry during the installation. Place the seal close to the effective sealing surface (or lip line). After the system is put into use, it is necessary to do a good job of further observation and aftercare of the fastening seal to prevent the collapse of the system caused by micro leakage due to the change of working conditions (such as pressurization). 3. Do not force the installation of varem metering pump, and do not be rude during construction. The forced loading of large action will inevitably destroy the original prefabricated structure of the seal, just like breaking and filling the prefabricated concrete to the required position, which will inevitably lead to disaster. The installation of such seals must be very careful, and the embedding must be gradual;