JP3965489B2 - Air dryer with sterilizing filter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air dryer with a sterilization filter, and more specifically, an air dryer, a dust filter, and a sterilization filter that are used to dry and sterilize compressed air to a clean state. When the filter composed of is integrated with the connected piping and related equipment, and the dust filter that constitutes the air dryer or filter has some failure at the same time, the entire device in the event of the failure This is related to technology that takes into account the convenience of repairing and reducing downtime.
[0002]
[Prior art]
As a conventional technique using an air dryer, a dust removal filter, or a sterilization filter, a technique shown in Japanese Patent Publication No. 3-31485 is known.
[0003]
In this case, by arranging an air dryer, a dust removal filter, and a sterilization filter from the compressor side in the compressed air discharge pipe from the compressor, water is removed from the compressed air as drain water while being separated step by step. Further, the compressed air is finally sterilized by passing through a membrane filter.
[0004]
[Problems to be solved by the invention]
However, such conventional techniques using an air dryer, a dust removal filter, or a sterilization filter have the following problems.
[0005]
First, it is noisy for environmental destruction. Recently, drain water generated from air dryers and filters and other drain water generated from air tanks and aftercoolers are generally purified by an oil / water separator. In this case, for piping connected to these devices and related devices, it is necessary to consider the installation location no matter how small, and in the past, if the configuration was determined according to the desire of the user, the result was Required a large installation space.
[0006]
Second, due to the large number of components, the installation of new equipment, including plumbing, required considerable effort and time. In addition, because of the large number of devices, preparation work such as transportation was difficult. Therefore, all these costs were added to the cost of newly installing the equipment.
[0007]
Thirdly, in recent technology, when it is necessary to use sterilized compressed air, it is generally necessary to collect three points of air dryer, dust filter and sterilization filter. There was an annoyance of always selecting and considering the arrangement and always performing the installation work.
[0008]
Fourth, in the event of any accident in the air dryer or air filter, the equipment was sometimes stopped for a long time because the response to the accident was not taken into consideration. . In particular, an air dryer accident often leads to an abnormality of the dust filter, and in the case of an accident in which both devices are simultaneous, the time required for response has been longer.
The present invention aims to solve such problems.
[0009]
[Means for Solving the Problems]
The present invention, compressed air pipe 92b so as to flow out from the downstream flow compressed air from the upstream in the order of the filter 40A including sterilization and air dryer 30, 93,94A, connected by 94b, yet the air dryer 30 Drain pipes 121 , 122 , 123, 124 for flowing drain water generated from compressed air and drain pipes 131a, 131b, 132a, 132b, 133a, 133b, 134a, 134b for flowing drain water generated from compressed air by the filter 40A are provided. In the downstream, a drain collecting pipe 140 that collects and drains drain water is connected, and a T-type is connected to the other end of the compressed air pipe 92b that is connected so that compressed air flows into the air dryer 30. The compressed air pipe provided with a joint 101 and connected so as to flow out of the filter 40A A T-type joint 103 is disposed at the other end of 4b, and a device for generating drain water by disposing a round bar 102 between the T-shaped joints 101, 103 includes only the filter 40A and piping. In addition, the above-described problems have been solved by fixing them to the air dryer 30 and integrally forming them.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of an air dryer with a sterilizing filter according to the present invention will be described in detail with reference to the drawings.
Here, FIG. 1 is a view showing one embodiment of an air dryer with a sterilizing filter according to the present invention, and FIG. 2 is a filter of one embodiment of an air dryer with a sterilizing filter according to the present invention. FIG. 3 shows another first embodiment shown in the circuit diagram of the filter-equipped air dryer according to the present invention. FIG. 4 shows the circuit of the filter-equipped air dryer according to the present invention. It is another 2nd Example shown in the figure.
[0011]
(One example)
In FIG. 1, reference numeral 30 denotes an air dryer. Regarding the connection of the devices before and after the portion not shown in FIG. 1, first, the compressed air produced by the air compressor sucking the atmosphere is stored in the air tank and stored. Compressed air is sent to the air dryer 30. In this case, in this invention, it is comprised so that compressed air may be sent into the air dryer 30 via compressed air piping 92a, 92b.
[0012]
Next, after the moisture is removed from the compressed air sent to the air dryer 30, a filter 40A comprising a dust removal filter 40a and a sterilization filter 40b disposed in the middle of the compressed air pipes 93, 94a, 94b, 94c is provided. By passing through, the moisture is removed here, and at the same time, various foreign substances and bacteria are removed, and the dried bacteria so that various pneumatic devices such as an air cylinder and an air motor operate smoothly downstream of the compressed air pipe 94c. Thus, the clean compressed air 303 removed is stably supplied.
[0013]
The order of the arrangement of the dust removal filter 40a and the bacteria removal filter 40b constituting the filter 40A is always arranged in the order described so that the bacteria removal filter 40b having a fine filtration ability is always located downstream. As the configuration of the filter 40A, two configurations are shown in FIG. 1 and FIG. 2, but if a filter having a fine filtration ability such as sterilization is located downstream, three configurations can be further increased. Configuration is also conceivable.
[0014]
Here, as seen in FIG. 2, the dust removal filter 40a is composed of a body 41a, a filter element 43a made of a cylindrical filter medium, a housing 42a, and the like. The filter element 43a is made up of dust and the like contained in compressed air. Foreign matter is removed.
[0015]
The sterilizing filter 40b includes a body 41b and a housing 42b that is detachably attached to the lower side of the body 41b. A cylindrical filter support having a passage 44ab is provided in the housing 42b. A body 44b is disposed below, and a cylindrical membrane filter element 43b is removably attached around the filter support 44b.
[0016]
The body 41b is formed with an inflow port 41ab for the compressed air continuous to the outside region thereof without facing the cylindrical membrane filter element 43b, and the flow continuous to the inside of the cylindrical filter support 44b. An outlet 41bb is formed. Further, a drain reservoir 42ab is formed inside the bottom of the housing 42b.
[0017]
That is, the inflow port 41ab does not face the cylindrical membrane filter element 43b and continues to the outer region thereof, and the drain reservoir 42ab continues to the outlet 41bb only through the membrane filter element 43b. .
[0018]
On the other hand, as means for making the cylindrical membrane filter element 43b detachable by the cylindrical filter support 44b, a bolt 47b that can be screwed to the body 41b and a terminal 44bb of the filter support 44b are held from below. FIG. 2 shows an example of the structure of the plate 45b and the nut 46b.
[0019]
The membrane filter element 43b usually has a capacity of about 0.1 to 5 [mu] m, but is 0.1 to 0.4 [mu] m in order to enable sterilization of general bacteria, fungi such as molds and yeasts. Something of the ability is used. Here, as a material of the membrane filter element 43b, regenerated cellulose, nitrocellulose, or the like can be considered.
[0020]
In this case, in the present invention, a T-shaped joint is disposed in the connecting portions 101 and 103 formed between the compressed air pipes 92a and 94b and the compressed air pipes 92b and 94c, and one of each of the T-shaped joints is provided. By arranging the round bars 102 in the two flow passage portions, the flow passage is sealed, and at the same time, the compressed air pipe 94c that is unstablely positioned in the air is fixed.
[0021]
In addition, as the air dryer 30, the case where an aftercooler is incorporated is also considered. In the present invention, the air dryer 30 is considered to be a refrigeration type. However, the air dryer 30 may be based on other methods such as a hollow fiber or a desiccant.
[0022]
On the other hand, drain water is generated from the air dryer 30 and the compressed air from the dust filter 40a and the sterilizing filter 40b constituting the filter 40A. Therefore, it is necessary to treat the generated drain water with an oil / water separator in order to obtain clean water that does not have any problem even if it is discharged directly into a river. 140.
[0023]
That is, in order to flow the generated drain water through the air dryer 30, a drain pipe 121, a valve 72 for opening and closing the pipe line, a drain pipe 122, a drain trap 82 for discharging drain water and compressed air together, and a drain pipe 123, A check valve 62 and a drain pipe 124 are arranged and connected to the collecting pipe 140.
[0024]
Accordingly, the arrangement of the check valve 62 prevents the drain from flowing back from the drain pipe 124 to the drain pipe 123. That is, there is no concern that the drain that has passed through the check valve 62 returns to the air dryer 30 side.
[0025]
In addition, regarding the check valve 62 disposed between the drain pipes 123 and 124 connected to the air dryer 30, the order in which compressed air flows from the air compressor, which is the source that generates the compressed air, and various intermediate points. Considering pressure loss due to piping and equipment, the pressure of the compressed air in the air dryer 30 is higher than the pressure of the compressed air in the dust filter 40a and the sterilizing filter 40b in the downstream as the order of flow of the compressed air. It can be removed.
[0026]
A drain pipe 131a, a valve 73a for opening and closing the pipe, a drain pipe 132a, and a drain are optionally discharged at the bottom of the dust filter 40a so that the generated drain water flows. A trap 83a, a drain pipe 133a, a check valve 63a, and a drain pipe 134a are arranged and connected to the collecting pipe 140.
[0027]
Further, in order to allow the generated drain water to flow into the sterilization filter 40b, the drain pipe 131b, the valve 73b for opening and closing the pipe, the drain pipe 132b, and the drain are discharged together with drain and compressed air in some cases. A drain trap 83b, a drain pipe 133b, a check valve 63b, and a drain pipe 134b are provided and connected to the collecting pipe 140.
[0028]
Therefore, the arrangement of the check valves 63a and 63b reliably prevents the drain from flowing back from the drain pipes 134a and 134b to the drain pipes 133a and 133b. That is, there is no concern that the drain that has passed through the check valves 63a and 63b returns to the air dryer 30 side.
[0029]
In this manner, the collected drain water 313 is collected in the collecting pipe 140 by collecting the drain water generated from the compressed air from the air dryer 30, the dust removing filter 40a and the sterilizing filter 40b constituting the filter 40A. It can be easily treated by an oil / water separator (not shown).
[0030]
The air dryer 30, the filter 40A composed of the dust removal filter 40a and the sterilization filter 40b, the compressed air pipes 92a, 92b, 93, 94a, 94b, 94c and the drain shown in FIG. Pipes 121, 122, 123, 124, 131a, 131b, 132a, 132b, 133a, 133b, 134a, 134b, valves 72, 73a, 73b, drain traps 82, 83a, 83b, check valves 62, 63a, 63b, the drain collecting pipe 140, the T-shaped joint formed in the connecting portions 101 and 103, and all the devices of the round bar 102 are integrally fixed to the base 200.
[0031]
That is, according to the present invention, the air dryer 30 and the filter 40A composed of the dust removal filter 40a and the sterilization filter 40b are integrated with each other as if they were one device including related devices such as piping. It was configured. This integration eliminates the need for users who want to install a device that produces dry, sterilized and clean compressed air to select a number of devices individually.
[0032]
However, in FIG. 1, the base 200 is positioned below the air dryer 30 as a fixing position. However, when the base 200 is not provided or the filter 40A is not positioned above the air dryer 30, the filter 40A is used. Various arrangements are conceivable, such as when the air dryer 30 and the air dryer 30 are positioned in parallel. Of course, there is a possibility that the shape of the table 200 may change in various ways.
[0033]
The air dryer with a sterilizing filter according to the present invention is configured as described above, and the operation thereof will be described below.
[0034]
First, when creating a dry and sterilized clean compressed air, and installing a device that also cleans the drain water generated from the compressed air, an air compressor, an air dryer with a sterilization filter according to the present invention, An oil / water separator is prepared, and the apparatus is prepared by connecting to the air compressor at the portion of the compressed air pipe 92a and connecting to the oil / water separator at the portion of the drain collecting pipe 140 where the entire drain water is collected. In this case, the device consisting of three points: an air compressor, an air dryer with a sterilizing filter, and an oil-water separator is the minimum necessary, but it produces dry compressed air that has been sterilized and dried. The purpose of discharging the drain water generated more as clear water can be achieved sufficiently.
[0035]
Here, by operating the prepared device, the compressed air produced by the air compressor passes through the air dryer with the sterilizing filter of the present invention, so that the compressed air is the air dryer 30 and the dust filter 40a. The filter 40 </ b> A composed of the sterilization filter 40 b passes through the filter 40 </ b> A and becomes dry and sterilized clean compressed air 303, but simultaneously drain water 313 is generated. In this case, the generated drain water 313 is a collection of all drain water generated by the air dryer 30, the dust removal filter 40a, and the sterilization filter 40b.
[0036]
In particular, as can be seen in FIG. 2, in the air dryer 30, the compressed air dehumidified by separating the drain water flows into the next dust filter 40a, where particles such as dust in the compressed air are removed. The Also here, the drain water is separated by cooling with the outside air or by the resistance of the filter element 43a. Now, the compressed air that has been dehumidified from the dust filter 40a flows into the outside of the housing 42b from the inlet 41ab of the bacteria filter 40b without directly hitting the membrane filter element 43b. Passes through the membrane filter element 43b.
[0037]
When the compressed air flows into the sterilization filter 40b, the compressed air is once discharged to the outside area of the membrane filter element 43b. Therefore, the water particles do not adhere to the membrane filter element 43b. Clogging is prevented and bacteria are prevented from growing there.
[0038]
Further, drain water generated by the air dryer 30, the dust filter 40a, and the sterilization filter 40b is drain pipes 121, 131a, 131b, valves 72, 73a, 73b, drain pipes 122, 132a, 132b, and a drain trap 82. , 83a, 83b, drain pipes 123, 133a, 133b, check valves 62, 63a, 63b and drain pipes 124, 134a, 134b.
[0039]
The drain traps 82, 83a, and 83b are configured to discharge the drain together with the compressed air. Furthermore, by arranging the check valves 62, 63a, 63b, there is no possibility that drain water collected in the collecting pipe 140 flows backward from the collecting pipe 140 side to the air dryer 30 side.
[0040]
(Another first embodiment)
3 is different from (one embodiment) shown in FIG. 1 in that a drain collecting pipe 140A is provided instead of the drain collecting pipe 140 of (one embodiment), and this drain collecting pipe 140A is joined. The portion 141 is formed, and the drain pipe 164 and the check valve 64 are connected. In this case, the position of the merging portion 141 may be anywhere as long as it is on the drain collecting pipe 140A.
[0041]
This facilitates the connection of devices such as an air tank and an after cooler that generate drain water other than the dust filter 40a and the sterilization filter 40b constituting the air dryer 30 and the filter 40A. In this case as well, although not specifically shown in FIG. 3, it is assumed that all the components shown in FIG. 3 are integrated, including the round bar 102 shown in FIG. 1. It is a feature of the invention.
[0042]
In addition, about operation | movement, it is possible to receive drain water via the junction part 141 also from the apparatus which produces | generates drain water other than the dust filter 40a which comprises the air dryer 30 and the filter 40A, and the microbe elimination filter 40b. Since it is the same except this, the specific content is abbreviate | omitted.
[0043]
(Another second embodiment)
4 is different from (another first embodiment) shown in FIG. 3 in that bypass circuits 173a, 173b, 173c, 173d, and 173z are provided, and that the bypass circuits 173a and 173c and the bypass circuit 173b are provided. The valves 195, 198, 191, 196, 197, and 193 are disposed in the middle of the 173d and in the middle of the compressed air pipes 92ba, 93a, 93c, and 94aa and the compressed air pipes 92bb, 93b, 93d, and 94ab.
[0044]
By providing the bypass circuits 173a, 173b, 173c, 173d, 173z and the valves 195, 198, 191, 196, 197, 193, the valves 195, 198 are normally closed and the valves 191, 196, 197, By opening 193, the air dryer 30, the dust removal filter 40a, and the sterilization filter 40b can be used. On the other hand, if any abnormality occurs in the air dryer 30, the valves 195, 197, 193 are opened and the valves 191, 196, 198 are closed, so that the apparatus for the time being can be used. When any abnormality occurs in the dust removal filter 40a, the valves 191 196, 198 are opened and the valves 195, 197, 193 are closed, so that the apparatus for the time being can be used. If any abnormality occurs in both the air dryer 30 and the dust removal filter 40a, the valves 195 and 198 are opened and the valves 191, 196, 197 and 193 are closed, so that the apparatus can be used for the time being. To do.
[0045]
In this case, by using a bypass bar 173a, 173b, 173c, 173d, 173z and a round bar different from the round bar 102 shown in FIG. 1, it is shown in (one embodiment) and (another first embodiment). The round bar 102 can be used instead, and the compressed air pipe 94c can be fixed in the same manner.
[0046]
As for the operation, when an abnormality occurs in the air dryer 30 and the dust removal filter 40a constituting the filter 40A, any part of the bypass circuits 173a, 173b, 173c, 173d, 173z is changed depending on the situation. Will be routed. Other than that, since it is the same as (another first embodiment), the specific contents are omitted.
[0047]
【The invention's effect】
As is clear from the above description, the present invention can provide the following effects.
[0048]
First, it is difficult to select the installation location by integrating the air dryer, the filter composed of the dust removal filter and the sterilization filter, and the equipment such as piping related to these equipment. Has been resolved. In particular, the smaller the equipment, the harder it was to select the installation location. However, by installing the air dryer in an integrated manner on the top of the air dryer, most of the devices seemed to have been installed.
In addition, an inexpensive device is possible in terms of cost.
[0049]
Second, by providing a confluence portion in the drain collecting pipe, it has become an apparatus that can easily cope with connection of equipment that generates drain water other than the air dryer and filter that are normally used.
[0050]
Thirdly, just by preparing an air compressor, an air dryer with a sterilizing filter, and an oil-water separator, clean, dry, sterilized compressed air and fresh water that separates various foreign substances including oil are discharged. An environmentally friendly device is now possible. Therefore, the construction for newly installing the facilities also requires only mutual piping, and there is a freedom that three types of equipment can be freely arranged according to the installation location.
[0051]
Fourth, the provision of a bypass circuit makes it unnecessary to suspend the entire apparatus even when an abnormality occurs in the air dryer or dust filter.
[Brief description of the drawings]
FIG. 1 is a view showing one embodiment of an air dryer with a sterilizing filter according to the present invention. FIG. 2 shows in detail a filter portion of one embodiment of an air dryer with a sterilizing filter according to the present invention. FIG. 3 is another first embodiment shown in a circuit diagram of an air dryer with a filter according to the present invention. FIG. 4 is another second embodiment shown in a circuit diagram of an air dryer with a filter according to the present invention. Explanation of]
30 ... Air dryer 40A ... Filter 40a ... Dust filter 40b ... Disinfection filter 41a ... Body 41ab ... Inlet 41bb ... Outlet 41b ... ··· Body 42a ··· Housing 42ab · · · Drain reservoir 42b ··· Housing 43a ··· Filter element 43b ··· Membrane filter element 44ab ··· Opening 44bb · · · Terminal 44b ··· Filter support 45b ··· Plate 46b ··· Nut 47b ··· Bolt 62 · · · Check valve 63a · · · Check valve 63b · · · Check valve 64 · · · ... Check valve 72 ... Valve 73a ... Valve 73b ... Valve 82 ... Drain trap 83a ... Drain trap 83b ... Drain 92a ... compressed air piping 92b ... compressed air piping 92ba ... compressed air piping 92bb ... compressed air piping 93 ... compressed air piping 93a ... compressed air piping 93b Compressed air piping 93c Compressed air piping 94a Compressed air piping 94aa Compressed air piping 94ab Compressed air piping 94ac Compressed Air piping 94b ... compressed air piping 94c ... compressed air piping 101 ... connection (T-shaped joint)
102 ... Round bar 103 ... Connection part (T-shaped joint)
121 .... Drain piping 122 ... Drain piping 123 ... Drain piping 124 ... Drain piping 131a ... Drain piping 131b ... Drain piping 132a ... Drain piping 132b ... Drain pipe 133a ... Drain pipe 133b ... Drain pipe 134a ... Drain pipe 134b ... Drain pipe 140 ... Drain collecting pipe 140A ... Drain collecting pipe 141 ...... Merging section 164 ... Drain piping 173a ... Bypass circuit 173b ... Bypass circuit 173c ... Bypass circuit 173d ... Bypass circuit 173z ... Bypass circuit 191 ... Valve 193 ... Valve 195 ... .... Valve 196 ... Valve 197 ... Valve 198 ... Valve 200 ... Base 303 ... Compressed air 313 ... Drain Water

Claims (1)

Connect the compressed air line to the order in the compressed air flows out of the downstream flow from the upstream of the filter containing the disinfecting air dryer (30) (40A) (92b , 93,94a, 94b), further the air dryer Drain pipes (121, 122, 123, 124) for flowing drain water generated from compressed air in (30) and drain pipes (131a, 131b, 132a, 132b) for flowing drain water generated from compressed air in the filter (40A) 133a, 133b, 134a, 134b) and connected downstream by a drain collecting pipe (140) that collects and discharges drain water, and is connected so that compressed air flows into the air dryer (30). A T-shaped joint (101) is disposed at the other end of the compressed air pipe (92b) and flows out of the filter (40A). A T-type joint (103) is disposed at the other end of the compressed air pipe (94b) connected in such a manner that a round bar (102) is disposed between the T-type joints (101, 103). The device for generating drain water by installing it is fixed to the air dryer (30) including only the filter (40A) and piping, and these are integrated into an air with a sterilizing filter Hairdryer.

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