CN202020958U

CN202020958U - Sliding sleeve type double-piston filter pressing device

Info

Publication number: CN202020958U
Application number: CN201020592630XU
Authority: CN
Inventors: 赵杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-05
Filing date: 2010-11-05
Publication date: 2011-11-02
Anticipated expiration: 2020-11-05

Abstract

The utility model discloses a piston type filter pressing device which is suitable for production technological processes such as cavity expanding filling, squeezing dehydration, cavity separation of filter cakes, cake discharging of a pulling plate and the like, so as to realize continuous automatic production of the piston type filter pressing device. The piston type filter pressing device has a simple structure, high production efficiency, strong squeezing dehydration performance, low water content of the filter cakes, low energy consumption and high efficiency and can be used for vacuum drying filter pressing as the matched device. The piston type filter-pressing device does not need additionally to add the cavity sealing force, only has the squeezing force, is suitable for fields of solid-liquid separation and has remarkable processing effect to municipal sewage.

Description

Sleeve type double-piston filter-pressing device

Technical field

The utility model relates to the equipment technology in the Separation of Solid and Liquid field, is embodied in the piston type filter press and expands the chamber fill that material, press dewatering, filter cake take off the chamber, arm-tie unloads the mechanism principle of four main processes of cake and the functional character of member in the press filtration production process.

Background technology

At present solid-liquid separating equipment is of a great variety, and representative have sheet frame diaphragm filter press and a piston type filter press.The sheet frame diaphragm filter press is seen Fig. 1, and the piston type filter press is seen Fig. 2.

Among Fig. 1: the two makes cavity seal van-type plate 12, diaphragm plate 13 under the effect of power T, then, fill high pressure gas or water at diaphragm cavity 14, and by barrier film 11 compression filter chambers 15, liquid effluxes, and solid matter is stayed in the chamber, lay down envelope chamber power T, van-type plate 12, diaphragm plate 13 are separated, filter cake draws off.

Among Fig. 2: piston 21, piston bush 22 filter chamber 23 under the effect of squeeze force P is compressed, and liquid effluxes, and solid matter is stayed in the chamber.Then, take out filter cake.

In summary it can be seen that the plate and frame filter press discharging is convenient, but squeeze force is little, generally has only 1.6Mpa, simultaneously, it also needs envelope chamber power bigger between plate and the plate.Piston type filter press squeeze force is big, can reach 5Mpa, and it does not need to seal chamber power, but the discharging difficulty, this shortcoming has restricted using of piston type filter press and has developed.

The utility model content

The key that restriction piston type filter press is popularized is discharging, therefore, the emphasis of the utility model content is the automatic discharging problem that solves the piston type filter press, makes equipment mechanism adapt to and satisfy the production process of piston press filtration, and then, the production efficiency and the automatization level of raising piston type filter press.

The technical scheme that the utility model used is a kind of sleeve type double-piston filter-pressing device, and each unit, press filtration chamber of described device is made up of long-term job plug, short piston, piston bush, sliding sleeve oil cylinder and pressing oil five parts.

Described sleeve type double-piston filter-pressing device, the piston rod length of long-term job plug is greater than the chamber depth of piston bush, and the piston rod exposed junction is a flange, and the long-term job plug is inserted in the piston bush all the time and does not throw off in expressing process.

Described sleeve type double-piston filter-pressing device, the piston rod length of short piston is shorter, and the exposed junction of piston rod is a flange, and short piston and piston are with from closing; Inserting piston bush and long-term job plug and form an airtight press filtration chamber, is the cake that unloads after the press filtration during disengagement.

Described sleeve type double-piston filter-pressing device, the excircle of piston bush is equipped with several sliding sleeve oil cylinders, and the cylinder body of sliding sleeve oil cylinder is connected with piston bush, and piston rod links mutually with the flange of long-term job plug.Piston is with plup inlet.

Described sleeve type double-piston filter-pressing device, the sliding sleeve oil cylinder can be oil hydraulic cylinder, vapour pressure cylinder.

Described sleeve type double-piston filter-pressing device, the length piston is connected as a single entity, and promptly the other end of long-term job plug is short piston, and the length piston is coaxial.The length piston end surface is equipped with filter cloth or filter screen, and piston body inside has the draining water channel and blows the cake air flue.

Described sleeve type double-piston filter-pressing device, described piston filter-pressing device are to be formed by a plurality of press filtrations chamber unit combination.

Description of drawings

Fig. 1 is a sheet frame diaphragm filter press structure chart;

Fig. 2 is piston type structure of pressing filter figure;

Fig. 3 fills material stage apparatus profile for the utility model in the expansion chamber;

Fig. 4 is that the utility model is at press dewatering stage apparatus profile;

Fig. 5 takes off chamber stage apparatus profile for the utility model at filter cake;

Fig. 6 falls the stage apparatus profile for the utility model at filter cake;

Fig. 7 is the filtering equipment profile that a plurality of chambers of the utility model are formed.

The specific embodiment

According to four main production processes in working cycles of piston filter press, promptly expand the chamber and fill that material, press dewatering, filter cake take off the chamber, arm-tie unloads cake, has adopted the sleeve type dual-piston structure.Fill material stage sleeve type double-piston filter-pressing device profile in the expansion chamber and see Fig. 3, form by long-term job plug 1, sliding sleeve oil cylinder 2, piston bush 3, short piston 4,5 five parts of pressing oil.The L of long-term job plug 1 is more than or equal to the H of piston bush 3.Long-term job plug 1 inserts in the piston bush 3, and the two is connected by sliding sleeve oil cylinder 2.Sliding sleeve oil cylinder 2 is installed on the piston bush 3 body excircles, and the piston rod of sliding sleeve oil cylinder 2 is connected with the flange of long-term job plug 1.Short piston 4 inserts the other end of piston bush 3, forms the chamber 6 of a sealing.Long-term job plug 1, short piston 4, piston bush 3, all slips on pull bar 7 are to guarantee long-term job plug 1, to lack the coaxial of piston 4, piston bush 3.At this moment, the piston rod of sliding sleeve oil cylinder 2 stretches out, and promotes long-term job plug 1 and moves to left, and is and expands the chamber state; Expanding the chamber boundary controlled by size S.Filtrate is driven in the filter chamber 6 by charging aperture 8.

Filter chamber 6 is compressed among Fig. 4.Filter cloth by long-term job plug and short piston leading portion is with the filtrate press filtration, and liquid is discharged from built-in water passage, and filter cake is stayed in the chamber.At this moment, be the press dewatering stage.

Pressing oil 5 releases among Fig. 5, the piston rod of sliding sleeve oil cylinder 2 reclaims, and drives piston bush 3 and moves to left, because the L of long-term job plug 1 is greater than the H of piston bush 3, filter chamber 6 is all withdrawed from, filter cake exposes.

To lack piston 4 by plate pulling device among Fig. 6 and move to right, short piston is thoroughly separated with filter cake, filter cake falls, and a working cycles finishes.

Among Fig. 7, structurally because the length piston can be made coaxial one, promptly the other end at long-term job plug flange is short piston, and therefore, the press filtration chamber can be prolonged and extend about axis on the basis of press filtration unit, forms the filtering equipment of a plurality of chambers.This device has still kept a pressing oil.By the transmission of power, the filter cake of each chamber is squeezed and dewaters.

This device has adopted structurally that one is long and the other is short two pistons, as the usefulness in envelope chamber, and the slip by piston bush solves and expands the chamber and unload cake, because the said structure feature, so be referred to as sleeve type double-piston filter-pressing device.

Claims

1. a sleeve type double-piston filter-pressing device is characterized in that, each unit, press filtration chamber of described device is made up of long-term job plug, short piston, piston bush, sliding sleeve oil cylinder and pressing oil five parts, wherein:

The long-term job plug inserts in the piston bush, and the two is connected by the sliding sleeve oil cylinder:

The sliding sleeve oil cylinder is installed on the piston bush body excircle;

The piston rod of sliding sleeve oil cylinder is connected with the flange of long-term job plug;

Short piston inserts the other end of piston bush, forms the chamber of a sealing.

2. sleeve type double-piston filter-pressing device according to claim 1 is characterized in that the piston rod length of long-term job plug is greater than the chamber depth of piston bush, and the piston rod exposed junction is a flange, and the long-term job plug is inserted in the piston bush all the time and does not throw off in expressing process.

3. sleeve type double-piston filter-pressing device according to claim 1 is characterized in that, the piston rod length of short piston is shorter, and the exposed junction of piston rod is a flange, and short piston and piston are with from closing; Inserting piston bush and long-term job plug and form an airtight press filtration chamber, is the cake that unloads after the press filtration during disengagement.

4. sleeve type double-piston filter-pressing device according to claim 1 is characterized in that the excircle of piston bush is equipped with several sliding sleeve oil cylinders, and the cylinder body of sliding sleeve oil cylinder is connected with piston bush, and piston rod links mutually with the flange of long-term job plug, and piston is with plup inlet.

5. sleeve type double-piston filter-pressing device according to claim 1 is characterized in that, the sliding sleeve oil cylinder is oil hydraulic cylinder, vapour pressure cylinder.

6. according to claim 2 or 3 described sleeve type double-piston filter-pressing devices, it is characterized in that the length piston is connected as a single entity, the other end that is the long-term job plug is short piston, and the length piston is coaxial, and the length piston end surface is equipped with filter cloth or filter screen, and piston body inside has the draining water channel and blows the cake air flue.