CN201244421Y

CN201244421Y - Automatic coiling type filter

Info

Publication number: CN201244421Y
Application number: CNU2008201162164U
Authority: CN
Inventors: 周莉莉
Original assignee: MAYAIR TECHNOLOGY (NANJING) Co Ltd
Current assignee: Egypt (China) environmental purification Co. Ltd.
Priority date: 2008-05-09
Filing date: 2008-05-09
Publication date: 2009-05-27
Anticipated expiration: 2018-05-09

Abstract

The utility model relates to an automatic winding filter which belongs to the technical field of air purification. The filter comprises a filter material rack supporting a filter material; and the upper end and the lower end of the filter material rack are respectively provided with a driven filter material reel and a driving filter material reel; the driving filter material reel is connected with a driving motor through chain transmission; one side of the filtering material is provided with a pressure difference switch for monitoring pressure difference between an air inlet surface and an air outlet surface of the filter material; and the pressure difference switch is connected with a controlled end of the driving motor through a control circuit. When air containing dust passes through the filter, the initial resistance of the filter material rises along with the increase of filter dust. When the filter resistance rises to a designed final value, i.e. the pressure difference between the air inlet surface and the air outlet surface of the filter material reaches a predetermined value, the pressure difference switch acts; a switch signal of the pressure difference switch causes the driving motor to automatically start by means of a logic control circuit so that the driving filter material reel is driven to rotate to roll up dirty filter material on a filter surface to draw out clean filter material from the driven filter material reel and then to unfold the clean filter material on the filter surface; therefore, not only the replacement of the filter material is convenient but also filter material waste caused by an error in human judgment can be avoided.

Description

Automatic roll filter

Technical field

The utility model relates to a kind of filter, relates in particular to a kind of automatic roll filter that is used for air pre-filtering section, belongs to the air purifying process field.

Background technology

The filter that present air purification field pre-filtering section is adopted mainly contains bag filter and leaf filter.Bag filter and disposable leaf filter in use, when the differential pressure before and after the filtrate reached to the whole resistance of design, also just be through with the service life of filter, bag filter that need more renew and disposable leaf filter; Leaf filter has a kind of leaf filter capable of washing, when filtrate reaches whole resistance, by changing filtrate, can realize reusing (being that framework can be reused), but need manual replacing filtrate one by one, usually the employed leaf filter quantity of filtering surface is a lot, changes the increase that has caused human cost one by one.The size of single bag filter or leaf filter is smaller, uses in big filter area occasion, and the number of filters that needs is a lot, waste time and energy when changing like this.

The utility model content

The purpose of this utility model is: at the shortcoming of above prior art existence, propose a kind of basis the monitoring result of turnover, wind face differential pressure value is changed the automatic roll filter of filtrate automatically, thereby can either make things convenient for the replacing of filtrate, the filtrate waste that can avoid artificial error in judgement to cause again.

In order to reach above purpose, device of the present utility model comprises the filtrate frame that supports filtrate, described filtrate frame upper/lower terminal is installed driven filtrate spool and active filtrate spool respectively, described active filtrate spool and drive motors are in transmission connection with chain, described filtrate is equipped with the differential pressure switch that is used to detect filtrate outlet and inlet face differential pressure on one side, and described differential pressure switch connects the controlled end of drive motors by control circuit.

Like this, when dust laden air passed through filter, the initial resistance of filtrate increased with filter dirt and progressively rises.When filter resistance rises to the design final value is that the outlet and inlet face differential pressure of filtrate is when reaching setting value, the differential pressure switch action, its switching signal starts drive motors by control circuit automatically, driving initiatively, the filtrate spool rotates, filtrate dirty on the filtering surface is rolled, filtrate by extraction cleaning on the driven filtrate spool is deployed on the filtrate frame simultaneously, thereby can either make things convenient for the replacing of filtrate, the filtrate waste that can avoid artificial error in judgement to cause again.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the structural representation of an embodiment of the utility model.

Fig. 2 is the control circuit schematic diagram of Fig. 1 embodiment.

Fig. 3 is the major loop schematic diagram of Fig. 1 embodiment.

The specific embodiment

Embodiment one

The automatic roll filter basic structure of present embodiment as shown in Figure 1, rectangle filtrate frame 1 both sides of supporting filtrate are columns 8, fixed interval has the filtrate blend stop 3 of level between two columns 8, filtrate case 2 is installed in the upper end of filtrate frame 1, driven filtrate spool 9 wherein is installed, so that clean filtrate volume is not subjected to the pollution of external environment condition.Initiatively filtrate spool 7 is installed in the lower end of filtrate frame 1, and the one end is connected by the output shaft of chain-drive mechanism with drive motors 6 (being the M among Fig. 3).On near the support that drive motors 6 is installed in the filtrate spool 7 initiatively with the filtrate frame is fixedlyed connected, a side is equipped with electrical control cubicles 5.Differential pressure switch 4 is installed in filtrate on one side, is used to monitor filtrate outlet and inlet face differential pressure.Except that driven filtrate spool 9 is housed, handle 10 and filtrate travel switch are housed also in the upward filtration hopper 2.Column is provided with a plurality of installing holes 11 around the filtrate frame 1.

Control circuit is put into as shown in Figure 2 in electrical control cubicles 5 inside, contain logic controller LOGO24RC (also claiming the LOGO controller), differential pressure switch SW2 (being 4 among Fig. 1) meets the input I2 of LOGO controller, and the output Q1 of LOGO controller connects the coil of the A.C. contactor KM of control drive motors 6.(promptly being in auto state at the hand automatic switch is that I4 has input logic control relation between input I2 and output Q1; The upward filtration hopper has filtrate, and the travel switch closure is that I1 has under the situation of input, and it is the differential pressure switch closure that I2 has input, and delays time 5 seconds, and it is electric motor starting, running that Q1 just has output).During use, be wound on the filtrate of cleaning on the driven filtrate spool 9 after, pull one end by the filtrate blend stop 3 of filtrate frame 1, is fixed to after launching filtering surface initiatively on the filtrate spool 7 presenting on the filtrate frame.After filter uses a period of time, filtering surface is along with the continuous increase of filter dirt, when the differential pressure of filtrate outlet and inlet face progressively rises to the design resistance at end of filtrate, differential pressure switch 4 closures, its switching signal makes Q1 that output be arranged by the logic control program of electrical control cubicles 5, thereby A.C. contactor KM coil gets, major loop (referring to Fig. 3) is connected, and starts drive motors M, and driving initiatively, filtrate spool 7 rotates, filtrate dirty on the filtering surface is rolled, changed into clean filtrate on the filtering surface simultaneously.

Under switch was in automatic transmission, motor began to change filtrate again to the logical condition that stops from startup:

(1) according to the height of takeup type filter, calculate and change filtering surface filtrate required time, and the input logic control program; Drive motors starts, and behind the running setting-up time, motor shuts down;

(2) the differential pressure switch differential pressure that monitors filtrate outlet and inlet face is lower than setting value and delayed time 5 seconds, and differential pressure switch returns to off-state, and promptly I2 does not have input, and motor shuts down.

Automatic roll filter possesses the function that manually boots drive motors simultaneously, and switch is transferred to the manual I5 of being input, and Q1 just has output (being that drive motors starts, turns round); Transfer to 0 with the hand automatic switch by manual, Q1 no-output (being that motor shuts down) this moment.

Among Fig. 2, the effect of Logo Power is the 220V power supply to be converted to the 24V direct current offer the LOGO controller.In addition, be used to monitor the travel switch SW1 whether upward filtration hopper filtrate use up and meet LOGO controller input I1, (there are the relation of logic NOT in input I1 and output Q2 to meet filtrate alarm lamp Red by logic control program control output end Q2, it is the stroke switch closure that I1 has the signal input, and Q2 is that 0 output is that the filtrate alarm lamp goes out; Otherwise the input of I1 no signal is the stroke switch to be disconnected, and it is that the filtrate alarm lamp is bright that Q2 has output).Therefore, when the filtrate on the driven filtrate spool 9 when using up, the travel switches in the filtrate case 2 disconnect, thereby light by logic controller control filtrate alarm lamp, to show the filtrate volume that need more renew.Green is a power supply indicator among Fig. 2.

Facts have proved, present embodiment have a following major advantage:

Whether (1) automatic roll filter can be differentiated filtrate on the filtering surface by differential pressure switch need to change, and has avoided the error of artificial judgement to cause the waste of filtrate.

(2) by logic control system, the running of control drive motors, thus human cost has been saved in the automatic replacing of realization filtrate.

(3) but this device both separate unit independently uses, also can be a plurality of unit splice use, satisfy the big place of draught area.

When (4) whole volume filtrate uses up, change easy to operate.

In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1, a kind of automatic roll filter, comprise the filtrate frame that supports filtrate, it is characterized in that: described filtrate frame upper/lower terminal is installed driven filtrate spool and active filtrate spool respectively, described active filtrate spool and drive motors are in transmission connection with chain, described filtrate is equipped with the differential pressure switch that is used to monitor filtrate outlet and inlet face differential pressure on one side, and described differential pressure switch connects the controlled end of drive motors by control circuit.

2, automatic roll filter according to claim 1 is characterized in that: described drive motors is installed on the support of fixedlying connected with the filtrate frame, and a side is equipped with electrical control cubicles.

3, automatic roll filter according to claim 2 is characterized in that: the control circuit of described electrical control cubicles inside contains the A.C. contactor of logic controller and control drive motors, and described differential pressure switch connects described A.C. contactor through logic controller.