A. Installation considerations
So what should be paid attention to when installing a chemical pump? The following are the matters needing attention in the installation of chemical pumps:
1. Make a concrete foundation according to the size of the foundation, and bury the anchor bolts at the same time.
2. Before installation, check the pump and motor. All parts should be intact and there should be no debris in the pump.
3. Put the unit on the foundation, put a pair of wedges between the bottom plate and the foundation, and adjust the level of the pump by adjusting the wedges. After adjustment, tighten the anchor bolts.
4. The suction and discharge pipelines of the pump should be supported by the pump. The diameter of the inlet and outlet pipelines should be the same as that of the pump inlet and outlet.
5. When installing the FZB series self-priming pump, the inlet pipe should be connected first, and then the outlet pipe should be connected after filling the liquid to correct the steering. The inlet pipe of the pump must match the pump, and the total length cannot exceed 5 meters, otherwise it will affect the self-priming performance. The self-priming height can be simply calculated according to the formula on the right: self-priming 3m/medium density = actual self-priming height in clean water.
6. After the installation is complete, finally turn the coupling by hand to check whether there is any rubbing phenomenon, and the installation is completed if the rotation is easy and even.
7. The magnetic pump is strictly forbidden to extract media with particles and easy to crystallize, and it is not allowed to operate continuously when the discharge port is closed, and the flow rate must be kept to a minimum.
8. In order to prevent debris from entering the pump, a filter should be installed at the inlet, and the filtering area should be 3 to 4 times larger than the cross-sectional area of the pipeline.
9. The pump with high head should also be equipped with a check valve on the outlet pipe to prevent water hammer damage due to sudden shutdown.
10. It must be ensured that the installation height of the pump meets the cavitation allowance of the pump, and the pipeline loss and medium temperature must be considered.
11. When the medium temperature is too high, cooling measures should be taken to prevent the mechanical seal from deforming and the static ring from cracking.
12. When the medium viscosity is too high, the pump performance and power will change. Please contact us for details.
B. Start-up and operation of chemical pumps
1. Before starting the pump, fill the pump with the liquid to be delivered (if the pump is sucking up), close the outlet gate valve, and connect the power supply.
2Turn on the power and check whether the rotation direction of the pump is correct.
3. The unit will run for 5-10 minutes, and it can be put into operation if there is no abnormal phenomenon.
4. When shutting down, the gate valve of the outlet should be closed first, and then the power supply should be cut off.
C. Repair and maintenance of chemical pumps
1. Regularly check the pump and motor, and replace vulnerable parts.
2. When the pump is not in use for a long time, clean the flow channel in the pump and cut off the power supply.
3. Dry operation is strictly prohibited.
D. Little knowledge: The conveyed medium is not corrosive, what pump should I choose?
Question: The medium we need to transport is 5% dilute sulfuric acid and the temperature is about 20 degrees. Its corrosiveness is not strong. What pump should I choose?
Answer: A stainless steel (304) pump can be used. The range of media that the stainless steel pump can deliver is as follows:
If the medium you transport can be found in the above table, several stainless steel pumps are listed below: DMC stainless steel magnetic pump, ZA stainless steel chemical centrifugal pump, DCZ stainless steel chemical centrifugal pump, ICP stainless steel chemical centrifugal pump
If the medium you transport is found to be unavailable in the above table, the following is a list of materials with stronger corrosion resistance:
1. Engineering plastics (reinforced polypropylene)
2. Ultra-high molecular weight polyethylene
3. Fluoroplastics (polytetrafluoroethylene, polyperfluoroethylene propylene)
Wuxi Xinjiuyang Machinery Manufacture Co.,Ltd. is a high-tech enterprise integrating scientific research, production and sales, a joint-stock enterprise mainly engaged in the production of stainless steel stamping centrifugal pumps, vertical multi-stage pumps, chemical pumps, submerged pumps, direct-coupled centrifugal pumps of various materials, various types of sewage pumps, corrosion-resistant and wear-resistant mortar pumps, fluorine alloy pumps and non-negative pressure water supply equipment.
Contact: E-mail: service@jyby.com.
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