Metering pump in use, daily maintenance and regular inspection of products, the purpose of doing so is to ensure the normal operation and safe use of the product! Then the metering pump for daily maintenance need to pay attention to what? Huaian dosing pump manufacturers of machinery to tell you!

1, when the pump is open and stop, the safety operation regulations are strictly carried out.

2, keep the surface of the equipment and the surrounding environment clean and tidy.

3, when adding oil, the "five fixed" and "three level filter" lubrication system should be strictly implemented.

Two, how to maintain in winter?

1. the oil should be replaced after the initial operation of 250 hours. Replace the lubricating oil every 2500 hours or six months later.

2. check one check valve and diaphragm once every six months and decide whether to replace it according to actual use.

3. the winter lubricating oil should be replaced when the temperature of the environment is below 100.

Three. Regular inspection should be given to metering pumps in addition to daily maintenance

1, check whether the flow, pressure, current and speed are in accordance with the requirements.

2, regular inspection of the equipment operation is normal, there is no abnormal or leakage phenomenon;

Check regularly how to choose the oil quantity in the clothing box and analyze the oil quality, and make up or replace it in time.

When the mechanical diaphragm metering pump scraps and grinds the bearing bush, it not only makes the contact points meet the technical requirements, but also enables the side clearance to reach the prescribed value, and the contact angle should be within the range of 60 degrees ~90 degrees. The general working method is to scrape and study the contact point at the same time, and take care of the contact angle at the same time, and then scrape the gap at the end. However, it should be noted that there should be no obvious boundary between the contact and the non - contact parts. It should feel very smooth when using the finger to rub the surface.

The order of the mechanical diaphragm metering pump scraping the bearing bushes is: first, coarse and fine scraping and researching the bearing bush, then scraping the upper bearing bush with coarse and fine material, then scraping the whole bearing bush thoroughly, and finally scraping the research side clearance and oil storage point.

First, two lower bushes are installed on the body bearing seat, and the lower bearing bush is kept at a basic level. Then the gear shaft is placed in the two bearing bush and rotates along the normal running direction of the 2~3 circle. Then measure the axle level and make a record, the gear shaft lifting, it should be based on the relative standard of high contact shaft neck and two bearing and the two bearing bush start on the two at the same time coarse scraping.

Rough scraping should first consider the level of gear shaft, knife scraping head several times thick should be heavy, stroke knife is 15~25mm, knife trace in 10mm above, is not exposed to not allow scraping. When the contact arc of the two axle bush reaches about 50% and the horizontal degree of the gear shaft is within 0.25/1000, the fine scraping and research should be started. When scraping and researching, the blade should be sharp and the force should not be too large. Over the conference, it will produce ripples and scrape the high point when scraping and scraping. The length of the tool is 6~10mm and 6mm, and scrape it in a certain direction.

The cutter trace and the bearing line at an angle of 45 degrees, high around will also scrape to the sparse scraping area is greater, until the contact angle in uniform contact point, gear shaft level in the range of 0.20/1000, was completed under the bearing of the rough and fine scraping work, but do not rush to finish scraping because, in fine scraping on the bearing, bearing under the contact point will increase, so you need to fine scraping bearing bush and repair large point scraping bush. 1. never exceed the maximum working pressure of the metering pump.

2. when the pump has pressure at the suction end, the pressure of the discharge end of the pump is at least 1bar higher than the pressure at the suction end.

How to choose the appropriate volume of pulse dampers?

By multiplying the metering capacity (ML) of each stroke of the metering pump by 26, the minimum volume (ML) of the pulse dampers needed to reduce the 90% pulsation can be obtained.

How to set the pressure of the safety valve?

The pressure of the safety valve can be adjusted within the rated operating pressure range of the metering pump, and it is not allowed to exceed the maximum working pressure of the metering pump. The safety valve is designed to prevent the overvoltage operation of the metering pump. For example, if the maximum working pressure of the metering pump is 3bar, the pressure of the safety valve should be set to 3bar or lower, so as to ensure the normal operation of the metering pump. Overpressure is one of the main causes of the damage of the metering pump.

If the conveyed liquid is not water, how to calculate the height of the lift?

The rated suction height of the metering pump is divided by the proportion of the measured liquid.

Under what circumstances do you use a self filled suction fluid?

1. the liquid is easy to volatilize.

2. the specific gravity of the liquid is larger.

3. when higher stroke frequency is needed;

4. when working in a high altitude area;

5. the large storage tank is needed in the field application, and it depends on the self imbibition of the metering pump.