XYMA type Plate and Frame Press Filter for solid liquid separation  

Summery

As the solid-liquid separation equipment, plate and frame press filter has been applied to the industrial production for a very long time and it owns excellent separation effect, broad adaptability, particularly has unique excellence in the separation of the sticky and fine mass. The series of the press filter produced by our company is kind of intermittent solid-liquid separation equipment which is a filter room formed by the filter plate, filtering flame and plate frame or the filter plate van-type arrangement. Under the pressure function of the feeding pump, it will deliver the liquid solution to different filter rooms and separate the solid and liquid by means of the filter media. It is widely used in the sewage treatment in chemical industry, dyes, ceramics, pharmaceutical, sugar manufacturing, food, starch, maltose, paints, metallurgy and different industries. The specification of the products is: 320, 450, 630, 800, 1000, 1250 and 1500 type. The filter area is: 1M2-500M2. The structure of the filter plate is in plate frame type, van-type and diaphragm press type. The heat resistance temperature is 0-120°C and the inflow way of the filter plate is free flow, underflow, washable and non-washable. The press way is: manual press, machinery press, hydraulic press and automatic dwell. The press filter arranges from 0.2 to 1.6Mpa. The materials of the plate frame are: Cast iron, reinforced polypropylene, high temperature glass fiber polypropylene and stainless steel etc. for selection.

Structural principle

The structure of the press filter is composed of three parts:

1. Frame: refers to the basic parts of the press filter and both ends are the thrust plate and holddown joint which connects with the beams on both sides. The beams are used to support the filter plate, filter frame and holddown plate.

a. Thrust plate: connects with the support and place one end of the press filter on the foundation. Feeding port is reserved in the middle of the thrust plate with four holes on the four angles, among which, the two holes in the upper side are the inlet of the washing liquid or the press gas while the two in the lower side are either the underflow structure or the filtrate outlet.

b. Holddown plate: used to press the filter plate and filter frame while the roller wheels on both sides are used to support the press plate to roll on the track of the beam.

c. Beam: refers to the bearing member. Rigid poly vinyl hydrogen, polypropylene, stainless steel cladding and new type anti-corrosion coating etc. can be selected according to the anti-corrosion environment of the environment used.

2. Press mechanism: manual press, machinery press and hydraulic press.

a. Manual press: means that the spiral machinery jack drives the press plate to press the filter plate.

b. Machinery press: press mechanism is composed of overload protector reducer, counter gear, lead screw and the fixed screw. When pressing tightly, the motor will be rotate on a clockwise basis, driving the reducer and counter gear to make the screw rotate in the fixed screw pair and promoting the press plate to press the filter plate and filter frame. When the pressing force is bigger and bigger, the load current of the motor will increase; when it increases to the current value set by the protector, it will reach the maximum pressing force. The motor will cut off the power and stop rotating.

c. Hydraulic press: the composition of the hydraulic press mechanism consists of the hydraulic station, cylinder, piston, piston rod and the Haff flange card connected by the piston rod and the press plate.

Filtering mechanism

1. Filter mode: the outflow mode of the filtrate includes the free current and undercurrent filter.

a. Free current: nozzle is established in the outflow liquid hole at the lower part of each filter plate and the filtrate directly outflows from the nozzle.

b. Undercurrent: outflow liquid channel hole is established in the lower part of each filter plate. the outflow liquid hole of several filter plats connect one outflow liquid channel and discharged by the pipelines connected by the outflow liquid holes in the lower part of the thrust plate.

2. Washing way: when the filter cake needs washing, there is free current bidirectional washing and single washing or undercurrent bidirectional washing and single washing.

a. Single washing of the free current is, the washing liquid enters from the washing hole of the thrust plate, runs through the filter cloth and filters cake, and finally outflows from the non-hole filter plate. at this time, the outflow liquid nozzle of the hole plate will be in closed status while that of the non-hole plate will be in the start status.

b. The bidirectional washing of the free current is washing for twice is carried out after the washing liquid comes into the washing inlet hole on both sides from the upper side of the thrust plate, that means the washing liquid washes on one side following with the other.

c. Single washing of the undercurrent is, the washing liquid enters the hole plate from the washing inlet hole of the thrust plate, runs through the filter cloth and filter cake, and finally outflows from the non-hole plate.

d. Bidirectional washing of the undercurrent means the washing liquid carries out washing for twice after entering the two washing inlets from both sides of the upper of the thrust plate, which means wash is executed from one side first following with the other. The washing inlet and outlet are in diagonal direction, therefore, it is also called bidirectional cross washing.

3. Filter cloth: filter cloth mainly refers to the filter media. The selection and application of the filter cloth exerts a decisive function for the filtering effect. The proper materials and aperture of the filter cloth shall be selected according to the PH value of the filter materials, solid particle and other factors so as to guarantee low filtering cost and high filtering efficiency. Under aplication, the filter cloth shall be ensured evenly with smooth aperture and without unfolding.

Filter cloth, materials and performance parameter

We are professional manufacturer of various bar screen machine, wastewater treatment equipment, filter press, belt filter press, and vacuum filter, dissolved air floatation etc, and can supply you the most cost-effective products with best price!

Plate frame filter press with good quality