Black Rubber Pneumatic Power Valve Diaphragm of MECAIR Type with
Great Sealing
As an efficient dust collector, bag dust collector is widely used
in various industrial waste gas dust removal, such as light
industry, machinery manufacturing, building materials, chemical
industry, non-ferrous smelting and iron and steel enterprises. It
has the advantages of simple structure, less investment, stable
operation and can recover dust which is difficult to recover due to
high specific resistance.
Compared with the venturi scrubber, the utility model has the
advantages of low power consumption, easy comprehensive utilization
of recycled dry dust and no problem of mud treatment. Therefore,
for fine and dry dust, it is suitable to use a bag filter for
purification.
| Type | MECAIR 2 1/2 Inch Pulse Valve Diaphragm |
| Applicable | Dust Collector Equipment |
| Model No. | DB120 |
| Material | Rubber Products |
| Specifications | Various |
| Power | Pneumatic |
| Packaging | According Your Request |
| Production | 100000 Pcs/Month |
| Usage Life | 1000000 Million Cycles |
The Picture of Installation of Diaphragm in the Pulse Valve
The General Characteristics of Diaphragm
Applicated in Bag Dust Filter Systems
A Method of Cleaning Dust from a Bag Filter
The method of dust removal is also an important factor affecting
the efficiency of filter. As mentioned above, the filter efficiency
is the lowest after the filter material is just cleaned. With the
increase of the filter time (i.e. the thickness of dust layer), the
efficiency rises rapidly. As the dust layer thickness increases
further, the efficiency remains at an almost constant high level.
Different ways of dust removal, different amount of escaping dust
when dust removal, and different amount of residual dust after dust
removal, so dust discharge concentration of dust remover is
different. For example, the dust discharge concentration after
mechanical vibration cleaning is lower than that after pulse
spraying; The dust discharge concentration of the former is several
times that of the latter when compared with the direct pulse
(compressed air is injected directly into the filter bag) and the
damping pulse (in the ash cleaning system, a device can gradually
reduce the pressure in the filter bag after the solenoid valve is
closed).
This is because in the case of direct pulse, the filter bag
contracts sharply after spraying, and the filter air and the
acceleration of the filter bag work together to increase the
penetration of dust that is loosened after spraying. The resistance
of the filter layer is higher than that of the direct pulse because
there is more residual dust on the filter material. In addition,
for the same ash-cleaning method, such as mechanical vibration
ash-cleaning method, when the vibration frequency is constant, the
amplitude increase will significantly increase the dust discharge
concentration. But when the frequency and amplitude change, the
dust discharge concentration is basically unchanged. The dust
discharge concentration of the bag filter in practical application
depends on the proportion of the filter bags in the total number of
filter bags, the distribution of air flow in all the filter bags
and the influence of the parameters of dust removal.
The Working Principle of Pulse Valve Diaphragm
Pulse valve diaphragm before and after the pulse valve is divided
into two air chamber, when electromagnetic pulse valve in the pulse
bag filter dust on the clean compressed air system, the compressed
air through the orifice, after entering air chamber, the gas
chamber pressure after the air outlet of the valve on the diaphragm
is clingy, pulse valve closed, the pulse controller output signal,
the pulse valve moving armature, stomatal opening after the valve
chamber, rapid loss of pressure chamber, make diaphragm
backward-shift, compressed air through the outlet valve injection,
injection, pulse valve is fully open pulse controller output signal
disappears, the electromagnetic pulse valve pilot title iron
reduction, air chamber after put the stomatal closure, After the
air chamber pressure increases, the pulse valve diaphragm is close
to the valve's air outlet, the pulse valve is in the closed state,
the spraying stop, the length of the blowing time the amount of air
is controlled by the controller.
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