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NPWF-1000 Rotary parts washing machine

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I. Main Technical Parameters:

1. Workpiece:

            Pumps and spare parts

             The Max. size of pump( Length x Width x Height mm ): 750mm x 660mm x 500mm

            Max. weight of 1 piece pump:  50kgs  

2. Loading height of the machine:   800±50mm

3.  Washing basket

             The capacity:    200kgs

             The overall dimensions of rotatory basket:  Φ1000 x 200mm

             Rotary motor power:    N = 0.40KW

4. Cleaning medium:     Water-based cleaning            

5. The capacity of water tank:     about 320L ( 0.32m3 )

6. Washing pump:    Q = 20m3/h  H = 44m N =5.5KW

7. Electric heating power:   3 x 7KW = 21KW

8. Fog suction fan power: 1.5KW  

9. motor power:  N = 0.025KW

10. The total power of the machine:     28.5Kw

11. Voltage: 380V/ 3Ph/ 50Hz ( Customized)

12. The overall dimensions of the machine  ( Length x Width x Height ) is:  about

             2000 x1400 x2200mm

13.   The materials of washing machine is: SUS304 Stainless steel



II. Cleaning time:  

5-10mins/1 basket, the diameter of washing basket is: φ1300mm






III. Technological process:

    Manual loading------ Conveyor inlet ( manual )------ Door close automatically ------Washing ----Open the door automatically------ Transport out ( Automatic ) ------ Unloading ( Manual)



IV.  Working process of the machine:

         The operator load the part on the washing basket. The crane load the part to the rotary washing basket ( or by single arm crane ). Drives the rotary washing basket into the cleaning chamber. The rotary motor drives rotary table, to make the washing basket rotating with part. At the same time, the door closed. Washing pump starts wash the part on the washing basket. Reach to the setting time. After washing, open the door. Unload the parts by crane. This completes a cleaning process. The entire program is controlled by MITSUBISHI PLC.



V. Machines structure, and description:

The equipment consists of a body, an upper cover, a water tank, a rotating system, a conveying system, a mist processing system, a door mechanism, and an electrical control system. The system is controlled by the relay program. The workpiece is placed in the washing basket, and the workpieces’ basket is manually sent to the cleaning chamber, the door is closed. The reducer controls the nozzles to spray the workpieces in rotating.  The action ends and returns to the state to wait to wash.  And the cleaning ends. The door is opened, the conveying system is actuated, and the washing basket is pulled back to the loading position by the operator. The process is completed.


1.  Machine body’s upper cover:

Adopt frame-structured, welded from profiled steel and stainless steel.

2.  Washing tank:

It is composed of the water tank body, filtration system, heating system, temperature control system, liquid level controller, belt type oil-water separator and so on.

2.1 Tank body:

      To save energy and reduce operating costs for equipment use. The water tank design to double layer heat insulation structure. The inner layer and outer layer both are made of  SUS304 stainless steel. In the middle, is Aluminum silicate insulation material. The water tank cover is a water-tight structure (to prevent the mist from overflowing), and the volume of the water tank is reduced as much as possible to the circulation of the water pump. The bottom of the water tank is designed to be a certain inclined plane. Easy to remove water and dirty.  One each water tank body is equipped with stainless steel water inlet, stainless steel water outlet port, stainless steel drain outlet, etc.

2.2 Heating system:

     The stainless steel electric heating pipe is used to heat the cleaning liquid, and the heating temperature can be seen in the table of process requirements.

2.3 Temperature control system:

The machine uses a temperature controller to automatically control the temperature of the cleaning fluid. The heater is automatically turned off when the temperature of the cleaning solution reaches the set upper limit; the heater is automatically turned on when the temperature of the cleaning solution is lower than the set lower limit. The temperature of the cleaning solution is adjustable at a lower limit of 55 ° C - 70 ° C. (The liquid temperature can be adjusted from room temperature to 70 °C)

2.4  Filter system:

The machine cleaning system uses three-levels of filtration. The first level filter is a drawer type stainless steel filter basket of the cleaning liquid return port to capture large particles of debris,. Mesh strainer adopts 40 mesh stainless steel mesh.  Second stage adopts plate-type filter frame of pump suction mouth. In case the dirty into the pump, to reduce the service of washing pump. Mesh strainer adopts 80 mesh stainless steel mesh. Third grade is stainless steel bag type fine filter( the filer precision is 30μm. ).

2.5 Level controller:

The machine adopts stainless steel liquid level controller. When the washing liquid level in the water tank is lower than the set value. Automatically shutdown the machine and alarm. To protect water pumps and heaters.

2.6  Belt type oil-water separator:

The machine adopts steel belt type oil-water separator in the water tanks. The worm gear reducer drives the drum to drain the oil slick from the water tank to ensure the cleaning quality. At the same time increase the service life of cleaning liquid. The fuel tank, support frame, drive shaft and so on are made of stainless steel. The oil absorbing belt (patented product) is made of special material, and the belt is durable, and it is not easy to break.


    3.  Rotary spray system:

     The spray system of the machine consists of spray pipes and nozzles, and is mainly spraying while rotating around the basket.

4.  Rotating system:

 The system consists of a brake reducer, a sprocket, a chain, a bearing, a water inlet shaft, a rotary joint and so on. The limit mechanism controls the state of the nozzles when they are at rest, ensuring that the basket freely enters and exits the cleaning chamber.

5.  The door mechanism:

This mechanism uses cylinder control. The cleaning chamber door is moved up and down by the cylinder control.

6.  Washing basket:

Made of stainless steel, consisting of baskets, bearings, supports, etc.

7. Electric control system:

The electric cabinet adopts the spray plastic separate electric cabinet. The machine is composed of an electrical box, an operation button box, low-voltage electrical components, cables and the like. Low-voltage electrical components use domestic high-quality products, using Mitsubishi PLC combined with touch screen to automatically control the equipment.


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