Walnut shell filter backwash control equipment

I. Introduction:

The backwashing time and backwashing strength of the walnut shell filter are relatively high. In addition, the number of canisters is large, the labor intensity of manual manual control is very large, and the backwash quality of the canister cannot be guaranteed, so it must be sampled internationally. Advanced modern control technology for fully automatic backwashing. The DJF-HTK-C series walnut shell filter backwashing control equipment developed by our company is based on the current international advanced level AC frequency conversion speed control technology, programmable controller-PLC control system and human-machine interface-touch screen technology. The walnut shell filter manufacturer and the user are equipped with a new type of walnut shell filter backwash control device.

The equipment controls the backwashing intensity (small, medium and large) through the AC variable frequency speed control technology, and controls the backwashing time and control mode through the programmable controller-PLC control technology, and changes the operation mode through the man-machine interface-touch screen technology operator. And backwashing process and related parameter settings. In short, the DJF-HTK-C series walnut shell filter backwashing control equipment developed by our company is to improve the control quality, management level and production efficiency of the production process, reduce the labor intensity of operators, save energy and reduce consumption, and reduce mechanical wear and tear. It has a very significant effect in reducing the maintenance cost of equipment.

Second, the main components:

1. Frequency conversion speed control device 2. Programmable controller 3. Human machine interface (true color 10.4``)

Third, the main technical indicators:

1. Backwashing pump control quantity: one used and one standby 2. imported filter valve control quantity: 10 groups 3. Outlet filter valve control quantity: 10 groups 4. Imported backwash valve control quantity: 10 groups 5. Export backwash valve control Quantity: 10 groups 6, mixer control quantity: 10 groups

Fourth, the walnut shell filter process flow chart:

Fifth, the backwash process diagram:

Sixth, the mixer operation process diagram:

Seven, walnut shell filter backwash control process introduction:

The device has a manual control function and a fully automatic control function, which can be automatically switched according to the needs of the user.

· The manual control process is as follows:

The operator controls the opening and closing of the inlet filter valve, the outlet filter valve, the inlet backwash valve, the outlet backwash valve, the mixer, and the backwash pump (one for one) through the touch screen buttons of the man-machine interface.

· The fully automatic process is as follows:

The operator sets the control parameters through the touch screen keys of the man-machine interface---the number of sets of walnut shell filters (1~10 sets), backwash pump selection (choose main pump or backup pump), backwashing intensity (small Strength Q1, medium strength Q2, high strength Q3), backwash strength duration (T1, T2, T3, T4, T5, T6, T7) and mixer running time (T01, T02) and so on.

When the operator presses the touch screen key of the man-machine interface fully, first close the inlet filter valve of the first group, then close the outlet filter valve 2 of the first group, open the outlet flush valve 3 of the first group, and then Open the first set of inlet backwash valves 4. Finally, the operating states of the first group of mixers 5 and backwash pumps 6 are controlled in accordance with the relevant control parameters set by the operator. When the backwash pump 6 is stopped to close the first group of inlet backwash valves 4, close the first group of outlet backwash valves 3, open the first set of outlet filter valves 2, open the first group of inlet filters Valve 1. Then continue to control the second group, the third group,

Eight, protection and alarm function introduction:

When the equipment alarm occurs during the backwashing process, save the alarm information of the current equipment and the current time and stop running the backwash pump 6 and the mixer 5, close the current inlet backwash valve 4, close the current outlet backwash valve 3, open the current The outlet filter valve 2 opens the current inlet filter valve 1. And the current state returns to the manual state.

The control device has overload protection of electric valves, mixers, backwash pumps and overpressure protection of the canisters.

Nine, man-machine interface:

The man-machine interface used in this control device is the internationally advanced TFT touch screen of 10.4'`, the display color reaches 65,536 colors, and the resolution reaches 640×480 points. It has rich picture colors and more vivid animation effects.

Ten, perfect technology and after-sales service:

Our company can supply walnut shell filter backwashing control equipment according to the actual needs of users, and on-site commissioning and after-sales service.