CN2283512Y - Air filter for freezing air drier - Google Patents

Abstract

The utility model provides an air filter of freezing formula air dryer, do filtering material with water and ball, mainly by first two filter plates in a filter body and the full-equipped ball, two filter plates of lower half and the ball that the part is full of are constituteed, lower half lower floor's filter plate slope is arranged in the body, an income trachea inserts on the suitable position of body bottom through each filter plate, install an outlet duct and directly go into in the air passage of air dryer heat exchanger reentrant evaporimeter on first last filter plate, an automatic drainer of outside installation, an inboard check valve of installation and a intercommunication U-shaped pipe. The filtering material of the device does not need to be replaced, only water is replaced, the device can be repeatedly used for a long time, the operation is greatly convenient, the equipment cost is reduced, and the device has outstanding social practicability.

Description

The refrigerated type air dryer air filter

The utility model is a kind of air filter, particularly a kind of air filter of the air source that is used for using on the refrigerated type air dryer.

Air filter is a kind of system that purifies air, in the dried-air drier of freezing type, at evaporator section a kind of catharsis is just arranged, impurity such as airborne moisture or oil content are separated, if but oil content is too much, then filter effect is bad, especially oil content is in the pipe outside cohesion of evaporimeter, be not easy to fall with the water droplet that condenses, but continue to stick to heat exchange circumference of cannon bone week, influence the effect of heat exchange, in addition oil gas with dry air from air outlet slit output, influence the quality of delivery air.Because as the dry required air source of air is to adopt compressed air, provide by air compressor, air through the air compressor compression process, because the effect of the various oil in the compressing hole, the hydrocarbon content of air has been increased, do not filter the running that certainly will influence dried-air drier and the quality of delivery air.

In existing air filter, to the use on the refrigerated air dryer, certain effect is arranged, but also have some problems.From structure shown in Figure 1 as can be known this filter assemble a garden shape filter screen 24, peripheral cladding one deck spin laced fabric 25, again at periphery bag one deck activated carbon fiber 26, at last again with the 27 complete claddings of one deck filter screen, air is by such four filter courses, see through obstacle layer by layer, oil gas or other impurity are stayed in the filtration layer and reached the purpose of air cleaning.The problem of this air cleaning unit is will be through changing filtering layer, because when filtering layer accumulates oil that a large amount of filtrations get off and other impurity filter course was lost efficacy, it is bigger that the resistance that air passes through also becomes, and the replacing filter course is cumbersome, and cost is higher.

In order to overcome the problems referred to above, the utility model proposes a new air filter scheme, its purpose is not use filtering layer structure, use does not need more, and the structure of conversion materials can guarantee airfiltering quality again, it is good that thereby the air quality that guarantees air dryer output is stablized, and the minimizing energy consumption reduces cost again simultaneously.

It is filtering material that basic design of the present utility model is to use water, uses the plurality of balls dispersion air, supports ball to form air filter with filter plate.In order to describe novel principle of this reality and structure in detail.Narrate in conjunction with the accompanying drawings and embodiments and will help understanding of the present utility model.

Fig. 1 is known air filter structural representation.

Fig. 2 is the utility model air filtration body construction three-dimensional cutaway view.

Fig. 2 A is the structural plan schematic diagram of the utility model air cleaner.

Fig. 3 is that ball of the present utility model is put schematic diagram.

Fig. 3 A is that ball is placed in the local enlarged diagram in filtration body bottom.

Fig. 4 is the utility model ball impurity screening action schematic diagram.

Fig. 5 is the utility model filter body embodiment floor map.

Fig. 5 A is a filter backstop floor map.

Fig. 6 is another embodiment floor map of Fig. 5 A.

Fig. 6 A and Fig. 6 B are the baffle plate schematic diagrames of backstop central authorities.

From shown in Fig. 2 and Fig. 2 A as can be known, air filter of the present utility model is by the suitable place that wears an air intake duct 42 and close body bottom 54 in the middle of the body 60, connect an air escape pipe 41 and extend in the heat exchanger 38 of dried-air drier at opposite side, establish two filter plates 45,46 at the body first half, between this two filter plate, fill ball 51 with equidistant eyelet.Lower Half at body also is provided with two poroid filter plates 47 and 48, following filter plate 48 tiltably-mounteds, and between 47 and 48, fill ball 51.On the body of filter, establish automatic water trap 52, establish a manual water trap 53 near 54 places, bottom, and install a non-return valve 56 and a U drainpipe 55 UNICOMs with opposite side and to the evaporimeter 35 of dried-air drier, bottom the U-shaped pipe, establish a manual water trap 57.On the following filter plate of the body first half and the body Lower Half between the filter plate, 52 near last filter plates at the opening part on the body for automatic water trap and non-return valve, and 56 near filter plates down.

Compressed air enters in 42 pipes from air inlet 39 and arrives in the filter, cut apart air through filter plate 48, make air become tiny bubble,, air is filtered via water and ball 51 to increase the contact area of air and ball, oil is bubbled through the water column, impurity such as dust are sunken to bottom 54, and the air after filtering passes filter plate 47 and 46, ball 51, filter plate 45, enter the heat exchanger 38 of escape pipe 41 bubbling air drying machines, reach the air dry run of carrying out freezing type in the evaporimeter 35 again.The isolated moisture of heat exchanging process institute flows in the U-shaped pipe 55 in evaporimeter, when the water yield of U type pipe runs up to level with non-return valve 56, water flows back in the body of filter by non-return valve, when the water yield in the filter surpasses the position of automatic water trap 52, reach discharge standard, water then emits automatically, because on the face that filters out that oil swims on water, automatic water trap preferentially emits oil slick, be deposited on the dirt slurry of bottom and other impurity by bottom 54 the manual drainage device regularly emit.

In the upper end of filter body one water inlet device 43 is set, it provides the water that filters usefulness to filter on the one hand, simultaneously also for cleaning the impurity such as dirt mud of ball and bottom.Ponding on the U-shaped pipe or impurity can be discharged by water trap 57.

Fig. 3 and Fig. 3 A are that ball is put schematic diagram and local enlarged diagram.At the filter first half, ball is full of between the filter plate 46 and 45, and the spray that causes spilt and brings in the escape pipe when purpose was to block air and rises from the bottom.And filter Lower Half ball is partly to be full of, end filter plate 48 is to tilt to put, purpose is to make ball that the trend of downward rolling is arranged, helping depositing impurity gathers to the bottom, and heavy mud rises and passes when the obstruction of end filter plate and ball prevents that gas from entering, make heavy mud more stably be deposited on the bottom 54 meaning just as shown in Figure 3A.

What Fig. 4 was represented is the action schematic diagram of the lower floor's ball impurity screening in the filter.Ball 511 is garden balls, and impurity 90 thereon sticks on the ball, when air is squeezed into, makes spherical ball 511 destroy original poised state because of the difference of power and produces rolling, the dirt mud that adheres to is come off and sink to the bottom.

Fig. 5 and Fig. 5 A are of the present utility model one better embodiment.Be characterized between between the filter plate of filter body bottom 54 and Lower Half lower end, setting up a backstop 70; When this backstop is used to avoid compressed air to enter, because air pressure is excessive, impact the bottom and make on the dirt mud of bottom generally, this is to be about to air dispersion earlier with a saturating layer backstop to cut into tiny bubble or gas line, add this one deck backstop, also help shortening the height of filter body.

What Fig. 6 and Fig. 6 A, 6B were represented is the improvement schematic diagram of the represented backstop of Fig. 5 A, i.e. the middle part amount of the establishing one garden shape baffle plate 81 of backstop 80, and this baffle plate 81 can be a surface plate, also can be the arc shape board 82 that raises up.The structure of this structure and Fig. 5 A has identical effect.

From above-mentioned explanation as can be seen, the air filter of refrigerated type air dryer of the present utility model has tangible progressive, it is a kind of practicality improvement that has, because this utility model can be avoided the replacing of filtering material, easy to operate, cost reduces and guarantees the purification requirement of air, and it will be subjected to the welcome of the relevant industrial circle of society.

Claims (4)

1, a kind of refrigerated type air dryer air filter, it is characterized in that being provided with up and down 2 half by filter body and in body, the first half has two layers of filter, be full of spherical ball between two filters, two layers of filter of Lower Half, the basecoat filter inclines and expects to be placed in the filter body, part is full of ball between two filter plates, an air inlet pipe is directly inserted on the correct position of body bottom by each filter plate, the other end connects with compressed air source, on body top, go up most on the filter plate and escape pipe to be installed and gas is introduced in the heat exchanger of dried-air drier, an automatic water trap is installed in a outside at filter body, at opposite side one non-return valve is installed, the position of automatic water trap is between the last filter plate of first half lower floor filter plate and Lower Half, last filter plate near Lower Half, non-return valve then is installed on the position of a little higher than automatic water trap height, a non-return valve and a U-shaped pipe are communicated with, the evaporator air passage of the other end of U-shaped pipe and air dry gas connects, in U-shaped pipe bottom one manual water trap is set, device is provided with a manual draining dust discharge mud in the bottom of body the valve of intaking is set in the upper end of body forms.

2,, it is characterized in that said ball is the garden spherical ball according to the freezing type air filter of claim 1 defined.

3,, it is characterized in that establishing a backstop between said body Lower Half and the bottom according to the air filter of claim 1 defined.

4, the air filter according to claim 3 defined is characterized in that the central authorities of said backstop can be designed to plain film shape baffle plate, the arcuation baffle plate that also can be designed to raise up.

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