JP6592538B2 - Gas-liquid separation system for compressed air - Google Patents

Description

  The present invention is suitable for supplying compressed air supplied from, for example, an air compressor to many air tools in factories and the like, and efficiently removes moisture in the compressed air in a large amount and at low cost by a non-powered and simple configuration. The present invention relates to a gas-liquid separation system for compressed air.

  Compressed air discharged from the air compressor contains water and oil. If this compressed air is supplied to an air tool such as an air driver, impact wrench, or paint gun, the inside of the air conduit will rust or the air tool's internal structure Since parts may rust and malfunction and may cause malfunctions, a gas-liquid separator as an air dryer is attached to the compressed air discharge line to remove moisture, and dry compressed air is supplied to the air tool. I am doing so.

The gas-liquid separator, for example, attaches an upper cover to the upper part of a hollow cylindrical body, connects them with a fastening ring, and screws an inlet pipe and an outlet pipe of compressed air into an inlet passage and an outlet passage on both sides of the upper cover, A cylindrical upper peripheral surface is screwed into the lower peripheral surface, and a screw hole is formed in the inner center of the upper cover. The upper end portion of the air guide is screwed into the screw hole, and the lower peripheral surface is partitioned into screw portions. The upper end of the tube is screwed in.
A plurality of substantially cylindrical partition structures are stacked on the inner side of the partition tube, and are connected to an air guide via long bolts. The partition structure has a concave space at the bottom, a conical convex portion is projected at the top, and a through hole communicating with the concave space is formed at the convex portion, and the through hole is left and right between the upper and lower partition structures. Are spaced apart from each other.

  Then, compressed air is introduced from the inlet passage, introduced between the hollow cylindrical body and the air guide, introduced into the lowermost partition structure from below the air-guide, and transparent from the recessed space. It moves to the hole and is introduced into the partition structure directly above, and when it moves, the compressed air collides with the moving wall surface to condense the water, condenses the water droplets to remove the water, and thereafter repeats the above operation to cover the upper cover. It moved to the exit channel | path, and the water | moisture content in compressed air was isolate | separated (for example, refer patent document 1).

However, the gas-liquid separator has a long hollow cylindrical body, and a plurality of irregularly shaped partition structures are stacked on the inner partition tube. Therefore, the gas-liquid separator is large, has a large number of parts, and is complicated and expensive. In addition, the moving path of the compressed air is complicated, the moving speed is reduced, the collision force against the wall surface is reduced, the condensation of moisture is reduced, and the gas-liquid separation action is generally low.
In addition, since the air dryer is disposed at an appropriate position in the air passage of the air tool, the gas-liquid separation efficiency is poor, and the air in the compressed air has to be supplied to the air tool without being sufficiently removed.

  In order to solve the above problem, a hollow cylindrical casing is connected to a header provided with an air inlet and an air outlet, a tubular cylindrical body is connected to the center of the casing, and a deflector is provided at the top of the cylindrical body. A tapered hole-shaped widened portion and a passage communicating with the widened portion are formed therein, a plurality of air holes are formed in the peripheral surface of the intermediate portion of the cylindrical body, and the compressed air introduced into the air inlet is There is a compressed air dehumidifying device that collides with a pressure-receiving surface of a deflector to condense water, aggregates the water droplets, and separates gas and liquid (for example, refer to Patent Document 2).

  However, the compressed air dehumidifying device has a cylindrical body disposed inside the casing, a deflector disposed at the upper portion thereof, and a large number of air holes formed at the intermediate portion, and is configured to be compact overall. There were problems such as a large number of parts and high costs.

  Further, as another air dryer, a container body is connected to a lid body provided with a compressed air suction port and an air exhaust port via a tightening ring, and a cylindrical tubular partition is disposed inside the container body, A cylindrical gas-liquid separation means is screwed on the inner side, and the upper end of the separation means is connected to the center of the lid, and the gas-liquid separation means has a plurality of flanges projecting from its peripheral surface. A small hole communicating with the inner negative pressure hollow chamber is formed in the collar portion, and the compressed air introduced from the suction port is guided between the container main body and the cylindrical partition, and the inner surface of the cylindrical partition and the gas-liquid separation means The water in the compressed air is condensed by colliding with the buttocks of the water, and the water droplets are aggregated and removed, then moved to the inside of the cylindrical partition, led from the small hole to the negative pressure hollow chamber, and moved from the exhaust port There is something like this (see, for example, Patent Document 3).

  However, the air dryer requires a long container body, and requires a cylindrical partition and an irregular gas-liquid separation means. Their structure is complicated, the number of parts is high, and the cost is high. Therefore, it was difficult to remove moisture and oil from the compressed air.

  In order to solve the above problem, a hollow cylindrical first and second containers are arranged opposite to each other on a base member having an inlet and an outlet, an oil separator is arranged in the first container, and the second container is dried. The oil separator is used to remove oil droplets and water droplets in the compressed air, the moisture in the compressed air is adsorbed by the desiccant, and a filter device is installed inside the dryer provided in the second container. There is a compressed air drying apparatus that is provided and removes fine particles such as oil mist and dust that cannot be removed by an oil separator (see, for example, Patent Document 4).

  However, the compressed air drying device can adsorb moisture and oil in compressed air and remove fine particles such as oil mist and dust, but it is large, heavy and complicated in structure, so it is expensive and generally produced. There were problems such as unfamiliarity with factory installation and use.

  As another means to solve such problems, the air compressor room and the factory that uses the terminal air equipment are arranged separately, and the air compressor, air tank, and compressed air are dried in the air pipe that is connected to the air compressor room. An air dryer that removes foreign matter from compressed air, and an air pipe that communicates with the air pipe of the air compressor chamber in the factory, and a branch pipe is connected upstream and downstream of the air pipe, Even if the air dryer and the terminal air device are connected to these branch pipes, the air dryer is arranged immediately before the terminal air device, and the air temperature changes rapidly while passing through the long air pipe via the air dryer, In addition, even if the room temperature around the terminal air device is quite low, the terminal air is ensured by ensuring a certain temperature with an air dryer. There is apparatus for producing compressed air so as to reduce the occurrence of drain water by the device (for example, see Patent Document 5).

  However, in order to reduce the generation of drain water at the terminal air device in the factory where the terminal air device is used, the manufacturing apparatus is equipped with an air dryer just before the terminal air device connected to the branch pipe connected to the air pipe. This requires a large number of air dryers, which increases the number of parts and increases the complexity of the configuration, making it expensive, and for the dehumidifying action of a uniform air dryer or a single air dryer. There was a limit, and there was a problem that it was not possible to respond to the supply of dry and clean compressed air.

  Furthermore, in order to solve the above problem, an air dryer is disposed downstream of the air compressor, a dust removing device and a hollow fiber air dryer are disposed downstream of the air dryer, and the compressed air is precisely dried by the hollow fiber air dryer. However, there is an apparatus for producing compressed air in which this is supplied to an air tool (for example, see Patent Document 6).

  However, since the manufacturing apparatus removes the moisture of the compressed air with a single air dryer, the moisture cannot be sufficiently removed, and when this is moved to a downstream dust removing device or a hollow fiber air dryer, The functions of the dust removal device and hollow fiber air dryer are reduced or deteriorated, and their service life is shortened. There was a problem.

  In view of these points, the applicant arranges a condenser capable of condensing compressed air upstream of the air dryer, and efficiently condenses and condenses moisture in the compressed air to dehumidify or dry the compressed air. A liquid separator has been developed and has already been proposed.

  Since the air flow rate and processing capacity of the air dryer and the condensing unit of the already proposed gas-liquid separator are relatively small capacities of 1 to 300 l / min, for example, in a factory using a large amount of compressed air, There was a problem that the processing capacity of the condenser could not keep up with the demand for air tools, and the compressed air could not be sufficiently dehumidified or dried.

Japanese Patent No. 4789963 JP-A-6-178910 Japanese Patent No. 5467180 Japanese Utility Model Publication No. 61-64324 JP 2007-130618 A Japanese Patent No. 3390967

  The present invention solves such a problem, and is suitable for supplying compressed air supplied from an air compressor or the like to many air tools in a factory or the like. The moisture in the compressed air is non-powered and has a simple configuration. It is an object of the present invention to provide a gas-liquid separation system for compressed air that can be removed efficiently and in large quantities at low cost.

The invention of claim 1, the dry box housing the air dryer to the supply line of the compressed air is arranged, wherein the air dryer, a head cover having a communication with the inlet and outlet to the supply pipe, the upper the cover a bottomed cylindrical tubular container mounted in the opening, a hollow cylindrical dehumidifying cylinder upper disposed cylindrical vessel linked to can communicate with the head cover was placed on top of the dehumidifying cylinder A plurality of air collecting cylinders, and small through holes formed in the air collecting cylinders so as to be able to communicate with the outlets. In the gas-liquid separation system for compressed air, which can condense the moisture of the air and supply clean and dry compressed air to the air tool, it is located upstream of the air dryer in the dry box. A condensing device capable of condensing the compressed air and separating the gas and liquid is disposed close to the condensing device. The condensing device has a head cover communicating with the supply pipe line, and a bottomed cylindrical tubular container having the head cover attached to the upper opening. And a hollow cylindrical condensing cylinder disposed in the cylindrical container and connected to the head cover so that the upper part thereof can communicate with the head cover, and the length of the condensing cylinder is formed to be approximately ½ of the length of the cylindrical container. In addition, the lower half of the cylindrical container is configured to be hollow, the compressed air is collided with the upper surface of the condensing cylinder so that moisture in the compressed air can be condensed, and a large amount of moisture in the compressed air is compressed. Efficiently condensate and condense on the upstream side of the supply line, dehumidify or dry, supply dry compressed air to the air tool, and prevent the air tool from malfunctioning or degrading its function. Closer to the upstream side than the air dryer Placed to reduce the burden of dehumidification and drying operations by the air dryer, suppress condensation of compressed air between the condenser and the air dryer, and configure the lower half of the condenser to be hollow, The introduction of compressed air into the cylindrical container and the introduction of compressed air from the cylindrical container into the condensation cylinder in the condenser are facilitated.

In the invention of claim 2 , the condenser and the air dryer are formed in a cylindrical body having the same outer diameter , and the lengths of the outer cylindrical containers are formed to be the same, thereby simplifying the configuration of the condenser and the air dryer. And I try to rationalize the production.
According to the invention of claim 3 , the base frame is enclosed and attached to the peripheral surface of the lower end portion of the dry box, and the bent pieces formed on both sides of the base frame are fixed to the installation surface so that the dry box can be easily installed. ing.

In the invention of claim 1, a condensing device capable of condensing compressed air and separating gas and liquid is arranged in the vicinity of the air dryer in the dry box, and the condensing device includes a head cover communicating with the supply pipe line; A condensing cylinder comprising: a bottomed tubular container having the head cover attached to the upper opening; and a hollow tubular condensing cylinder disposed in the tubular container and connected at an upper portion thereof to the head cover. The length of the cylindrical container is approximately ½ of the length of the cylindrical container, the lower half of the cylindrical container is configured to be hollow, and the compressed air collides with the upper surface in the condensation cylinder to Since moisture can be condensed, a large amount of moisture in the compressed air is efficiently condensed and condensed on the upstream side of the compressed air supply pipe to dehumidify or dry, and the dried compressed air is supplied to the air tool. Prevent tool failure and functional degradation In addition, the condenser is located close to the upstream side of the air dryer in the dry box, reducing the burden of dehumidification and drying operations by the air dryer, and suppressing the condensation of compressed air between the condenser and the air dryer, In addition, the lower half of the condenser can be configured to be hollow so as to facilitate the introduction of compressed air into the cylindrical container in the condenser and the introduction of compressed air from the cylindrical container into the condenser cylinder in the condenser. it can.

In the invention of claim 2 , since the condenser and the air dryer are formed in a cylindrical body having the same outer diameter , and the lengths of the outer cylindrical containers are the same, the configuration of the condenser and the air dryer is simplified. And rationalization of its production.
Since the invention of claim 3 surrounds and attaches the base frame to the peripheral surface of the lower end portion of the dry box, and the bent pieces formed on both sides of the base frame are fixed to the installation surface, the dry box can be easily installed. it can.

(A) It is a front view which shows the 1st Embodiment of this invention, and the inside of a dry box is fractured | ruptured and shown. (B) It is sectional drawing which expands and shows the installation condition of the lower end of a dry box. It is a right view of the dry box of FIG. It is sectional drawing which follows the AA line of FIG. It is a top view of the dry box of FIG.

It is a front view which shows the condenser applied to this invention. It is sectional drawing in alignment with the BB line of FIG. 5, and has expanded a little. It is sectional drawing which follows the CC line of FIG. 5, and has expanded a little. It is a front view which shows the air dryer applied to this invention. It is sectional drawing which follows the DD line | wire of FIG. 8, and has expanded a little. It is sectional drawing in alignment with the EE line | wire of FIG. 8, and has expanded a little.

It is sectional drawing which follows the FF line | wire of FIG. It is sectional drawing which follows the GG line of FIG. It is a front view which shows the 1st application form of this invention, and sets 1 set of condensers and 3 sets of air dryers in parallel in a dry box. It is a front view which shows the 2nd application form of this invention, the 2nd dry box is arrange | positioned in the downstream of a dry box, and the two air dryers are arrange | positioned adjacently in the inside. It is a front view which shows the 3rd application form of this invention, and arrange | positions the air-cooling cooling device in the upstream of a dry box.

  Hereinafter, the illustrated embodiment in which the high-temperature and high-pressure compressed air generated according to the present invention is dehumidified or dried and supplied to many air tools in a production factory will be described. In FIGS. 1 to 12, 1 is installed in a production factory. The generated high-temperature and high-pressure compressed air is introduced into the air tank 3 from the pneumatic pipe 2 and stored by the air compressor, and can be supplied from the air tank 3 to the remote air tool 6 through the air conduits 4 and 5. Yes.

A dry box 7 is inserted between the air conduits 4 and 5, and a lower end portion thereof is installed on an installation surface 9 such as concrete or ground via a base frame 8.
The dry box 7 is formed in a substantially rectangular parallelepiped shape by bending a thin steel plate, and has a substantially U-shaped housing 10 whose cross section is open on the back or front, and a rectangular cover panel 11 on the back or front. Attached so as to be detachable with screws or the like, maintenance of an air dryer and a condenser described later can be performed.
The dry box 7 of the embodiment has a length of 300 mm, a width of 320 mm, a height of about 1000 mm, and a weight of about 27 kg, and can be carried by a handle described later.

The base frame 8 is formed in a rectangular trapezoidal shape by bending a steel plate into an inverted U-shaped cross section, a rectangular insertion hole 12 is formed in the center thereof, and a bent piece 12a is formed in a frame shape inside the insertion hole 12. ing.
And the lower end part of the dry box 7 is inserted inside the bent piece 12 a, and the lower end part and the bent piece 12 a are connected via a plurality of bolts and nuts 13.
Bending pieces 14 and 14 having a substantially L-shaped cross section are formed at the front and rear portions of the base frame 8, and base bolts (not shown) are inserted into bolt insertion holes 15 and 15 formed in the horizontal plane of the bending pieces 14 and 14, This is screwed into an installation surface 9 such as concrete and fixed immovably.

A taper surface 7a is formed at the front upper end portion of the dry box 7, and two pressure gauges 16 are provided on the taper surface 7a. The pressure gauge 16 introduces compressed air into the condenser or the air dryer. And the outflow pressure can be measured.
In this case, it is desirable to provide a thermometer capable of measuring the temperature of the compressed air in addition to the pressure gauge 16 so that the humidity of the compressed air can be monitored.
In the figure, 17 is a U-shaped handle provided on both side surfaces of the intermediate portion of the dry box 7 so that the dry box 7 can be carried. In this case, for the smaller and lighter dry box 7, it is possible to provide one handle 17 on the upper end surface.

A relay conduit 18 communicating with the air conduits 4 and 5 is provided in the upper portion of the dry box 7, and a condenser 19 and an air dryer 20 are disposed in the conduit 18 from the upstream side.
The condenser 19 and the air dryer 20 are constituted by cylindrical bodies having substantially the same diameter, and their processing capacity or air flow rate is 4000 l / mim, which is about 13 to 14 times that of the conventional one. , 22 are connected.
In the figure, reference numerals 21a and 22a denote connecting pipes protruding from the upper ends of the auto drains 21 and 22, which can be screwed into screw pipes of a cylindrical container described later of the condenser 19 and the air dryer 20.

The condenser 19 of the embodiment is configured by a hollow cylindrical body having an outer diameter of 90 mm (1.2 times that of the prior art) and a length of about 430 mm (2.3 times that of the prior art), and its lower half is configured to be hollow. Thus, the introduction of compressed air into a cylindrical container, which will be described later, and the introduction of compressed air from the cylindrical container into the condensation cylinder are facilitated.
In the figure, 23 and 24 are drain tubes connected to the auto drains 21 and 22, and their end portions are piped to the lower end portion of the dry box 7 so that drain water can be discharged to the outside.

  The condenser 19 includes a cylindrical container 25 made of an aluminum tube, a stainless steel tube or a synthetic resin tube, an aluminum die cast or synthetic resin head cover 26 detachably attached to the upper end portion thereof, and an upper end portion on the head cover 26. A condensing cylinder 27 made of a hollow cylindrical aluminum tube or stainless steel tube or a synthetic resin tube, which is connected and arranged inside the cylindrical container 25, is formed.

The cylindrical container 25 is formed in a circular tube shape having an outer diameter of 90 mm and a length of 430 mm, and a screw portion 28 is formed on the upper end portion thereof. A screw portion 29 formed on the inner surface of the lower end portion of the head cover 26 is formed on the screw portion 28. It is screwed.
A lower end portion of the cylindrical container 25 is formed in a funnel shape, and a screw pipe 31 made of an aluminum tube, a stainless steel tube or a synthetic resin tube is connected to a through hole 30 in the center thereof, and drain water stored in the bottom portion of the container 25 is stored. The auto drain 21 can be moved.

An inlet 32 and an outlet 33 are formed at opposite positions on the peripheral surface of the head cover 26, and the relay conduit 18 and the air conduit 4 are connected to the screw holes 34 and 35.
The inlet 32 and the outlet 33 are partitioned by a partition wall 36, a passage 37 communicating with the cylindrical container 25 is formed at the back of the inlet 32, and an outlet passage 38 is formed at the back of the outlet 33. A screw hole 39 is formed in the inner portion of the tube, and a screw portion 41 of a connecting pipe 40 protruding from the upper end portion of the condensation cylinder 27 is screwed into the screw hole 39.

The condensing cylinder 27 is formed in a hollow cylindrical shape having a smaller diameter than the inner diameter of the cylindrical container 25, and its length is formed to be approximately ½ of the cylindrical container 25 , and its lower end is located at an intermediate position of the cylindrical container 25. An annular air passage 42 is formed between the condensation cylinder 27 and the cylindrical container 25.
Then, the compressed air introduced from the inlet 32 is guided to the air passage 42, introduced from the lower end portion thereof into the condensation cylinder 27, moved from the upper portion of the condensation cylinder 27 to the outlet passage 38 through the connecting pipe 40, and air is discharged from the outlet 33. It can be led out to the conduit 18.

  The air dryer 20 is configured in the same manner as the condenser 19 in appearance, and the air dryer 20 includes an aluminum tube, a stainless steel tube, or a cylindrical container 43 made of a synthetic resin tube, and an aluminum die cast that is detachably attached to the upper end portion thereof. Alternatively, a synthetic resin head cover 44, and a dehumidifying cylinder 45 made of a hollow cylindrical aluminum tube or stainless steel tube or synthetic resin tube having an upper end connected to the head cover 44 and disposed inside the cylindrical container 43, It is configured.

The cylindrical container 43 is formed in a circular tube having an outer diameter of 90 mm (1.2 times that of the prior art) and a length of 430 mm (2.3 times that of the prior art), and a threaded portion 46 is formed on the peripheral surface of the upper end portion thereof. A screw portion 47 formed on the inner surface of the lower end portion of the head cover 44 is screwed to the screw portion 46.
A lower end portion of the cylindrical container 43 is formed in a funnel shape, and a screw pipe 49 made of an aluminum tube, a stainless steel tube or a synthetic resin tube is connected to a through hole 48 in the center thereof, and drain water stored in the bottom portion of the container 43 is stored. The auto drain 22 can be moved.

An inlet 50 and an outlet 51 are formed at positions opposed to the peripheral surface of the head cover 44, and the relay conduit 18 and the air conduit 5 are connected to their screw holes 52 and 53.
The inlet 50 and the outlet 51 are partitioned by a partition wall 54, a passage 55 communicating with the cylindrical container 43 is formed at the back of the inlet 50, and an outlet passage 56 is formed at the back of the outlet 51. A screw hole 57 is formed in the inner part of the tube, and a screw part 59 of a connecting pipe 58 protruding from the upper end of the dehumidifying cylinder 45 is screwed into the screw hole 57.

The dehumidifying cylinder 45 is formed in a hollow cylindrical shape having a smaller diameter than the inner diameter of the cylindrical container 43, and its length is formed to be approximately ½ of the cylindrical container 43, and its lower end is located at an intermediate position of the cylindrical container 43. An annular air passage 60 is formed between the dehumidifying cylinder 45 and the cylindrical container 43.
Then, the compressed air introduced from the inlet 50 is guided to the passage 55, the dehumidifying cylinder 45 is introduced from the lower end thereof, and moved from the upper portion of the dehumidifying cylinder 45 to the outlet passage 56 through the connecting pipe 58, and from the outlet 51 to the air conduit 5. It is possible to move to.

A disc-shaped substrate 62 is provided at the upper end portion in the dehumidifying cylinder 45 via a connecting cylinder 61, and six air collecting cylinders 63 project from the lower surface of the substrate 62 at equiangular positions.
A concave hole 64 is formed in the lower end portion of the air collecting cylinder 63, the lower end of the through hole 65 is opened in the concave hole 64, the upper end of the through hole 65 is opened in the connecting cylinder 61, and moves through the through hole 65. The compressed air thus made can be ejected into the connecting cylinder 61 in an adiabatic expansion state.

In the gas-liquid separation system of compressed air according to the present invention configured as described above, the dry box 7 is installed between the air conduits 4 and 5 between the air tank 3 and the air tool 6, and the dry box 7 includes the dry box 7. The condenser 19 and the air dryer 20 are accommodated directly connected to the ends of the conduits 4 and 5. Therefore, the condenser 19 and the air dryer 20 can be protected by the dry box 7 and branch to the compressed air supply path. It can be installed without requiring a line or branch line and without an air dryer in the uppermost stream.

And by arrangement | positioning of the condensing device 19, since the condensation of the water | moisture content in the downstream can be suppressed and removal of condensed water can be avoided, while reducing the burden of an air dryer and suppressing the function fall, piping of compressed air and The work and their maintenance can be done simply and compactly, and this can be done inexpensively and rationally.
In addition, since the condenser 19 can be installed regardless of the separation distance from the air tank 3 and the desired effect can be obtained, the installation position and the installation environment are not restricted, and the degree of freedom of installation can be obtained.

The dry box 7 is manufactured by bending a thin steel plate to form a vertically long rectangular parallelepiped, forming a substantially U-shaped housing 10 having a transverse cross section opened at the front or back, and having a rectangular shape at the opening. The cover panel 11 is screwed and detachably attached, so that maintenance of the condenser 19 and the air dryer 20 accommodated therein can be performed.
The dry box 7 of the embodiment has a length of 300 mm, a width of 320 mm, a height of about 1000 mm, and a weight of about 27 kg, and can be carried by handles 17 and 17.

When installing the dry box 7, it is necessary to manufacture a base frame 8. The base frame 8 is formed by bending a steel plate into an inverted U-shaped cross section, forming a rectangular insertion hole 12 at the center, and inside the insertion hole 12. The bent piece 12a is formed in a frame shape.
Further, bent pieces 14 and 14 having a substantially L-shaped cross section are formed at the front and rear portions of the base frame 8, and bolt insertion holes 15 and 15 are formed in the horizontal plane of the bent pieces 14 and 14.

When the dry box 7 is installed using the base frame 8 thus manufactured, the lower end portion of the dry box 7 is inserted into the insertion hole 12 of the base frame 8, and the lower end portion and the bent piece 12a are connected to a plurality of bolts and nuts. 13 and the base frame 8 is connected to the lower end of the dry box 7.
Then, the horizontal surfaces of the bent pieces 14 and 14 of the base frame 8 are placed on the installation surface 9, base bolts (not shown) are inserted into the bolt insertion holes 15 and 15, and are screwed into the installation surface 9 such as concrete. The dry box 7 is fixedly installed on the installation surface 9.

As described above, the dry box 7 is configured as a small and light box and can be easily carried by the grips 17 and 17, so that the dry box 7 can be easily installed and moved.
Moreover, since the cover panel 11 is detachably attached to the front part or the back part of the dry box 7, attachment and maintenance of the condenser 19 and the air dryer 20 housed inside can be easily performed.

  Moreover, the pressure gauge 16 capable of measuring the pressure of introducing and deriving compressed air to the condenser 19 and / or the air dryer 20 in the dry box 7 and the temperature capable of measuring the temperature of the compressed air to the condenser 19 or the air dryer 20. Since it is equipped with a meter, it is possible to confirm and manage the state of introduction and derivation of compressed air and humidity, and to maintain the optimum supply state of compressed air.

  After the installation of the dry box 7, the ends of the air conduits 4, 5 are piped on the inner upper side, the condenser 19 is connected to the downstream end of the air conduit 4, and the air is connected to the upstream end of the air conduit 5. The dryer 20 is connected, and the condenser 19 and the air dryer 20 are connected by the relay conduit 18.

  On the other hand, the condenser 19 includes an aluminum tube, a stainless steel tube, or a cylindrical container 25 made of a synthetic resin tube, an aluminum die cast or synthetic resin head cover 26 detachably attached to the upper end portion thereof, and an upper end on the head cover 26. And a condensing cylinder 27 made of a hollow cylindrical aluminum tube or stainless steel tube or a synthetic resin tube disposed inside the cylindrical container 25.

When assembling the condenser 19, the threaded portion 41 of the connecting pipe 40 protruding from the upper end of the condensing cylinder 27 is screwed into the screw hole 39 in the center of the lower end of the head cover 26, and the cylindrical container is placed outside the condensing cylinder 27. 25, and the screw portion 29 at the upper end thereof is screwed into the screw portion 28 on the inner surface of the lower end portion of the head cover 26 to be fixed.
A lower end portion of the cylindrical container 25 is formed in a funnel shape, and a screw pipe 31 made of an aluminum tube, a stainless steel tube, or a synthetic resin tube is inserted into a through hole 30 in the center, and the joint portion is welded, brazed, or bonded. Connect.

  The air dryer 20 includes an aluminum tube, a stainless steel tube, or a cylindrical container 43 made of a synthetic resin tube, an aluminum die cast or synthetic resin head cover 44 detachably attached to the upper end portion thereof, and an upper end of the air cover 20. And a dehumidifying cylinder 45 made of a hollow cylindrical aluminum tube or stainless steel tube or a synthetic resin tube disposed inside the cylindrical container 43.

When assembling the air dryer 20, the screw portion 59 of the connecting pipe 58 protruding from the upper end portion of the dehumidifying cylinder 45 is screwed into the screw hole 57 at the lower end center of the head cover 44, and the cylindrical container is placed outside the dehumidifying cylinder 45. 43 is inserted and arranged, and the screw portion 47 at the upper end thereof is screwed into the screw portion 46 at the inner surface of the lower end portion of the head cover 44 and fixed.
A lower end portion of the cylindrical container 43 is formed in a funnel shape, and a screw pipe 49 made of an aluminum tube, a stainless steel tube or a synthetic resin tube is inserted into the central through hole 47, and the joint portion is welded or brazed or bonded. Connect.

  After assembling the condenser 19 and the air dryer 20 to the dry box 7 in this way, the connection pipes 21a and 22a are screwed into the screw pipes 30 and 49 at the lower ends thereof, the auto drains 21 and 22 are attached, and the lower ends thereof are projected. One end of the drain tubes 23 and 24 is positioned at the lower end portion of the dry box 7, and the cover panel 11 is screwed and closed at the front or back opening of the dry box 7.

  Since the condenser 19 and the air dryer 20 are arranged close to each other inside the dry box 7 as described above, the dry box 7 can be reduced in size and weight, and the dehumidified compressed air can be immediately sent to the air dryer 20. The generation of condensate when supplying the dehumidified compressed air can be suppressed, the burden on the air dryer 20 can be reduced, and the functional deterioration thereof can be prevented.

In the gas-liquid separation system for compressed air configured in this way, high-temperature and high-pressure (about 50 to 80 ° C., 0.1 to 1.5 MPa) compressed air is fed into the dry box 7 from the air tank 3 side. Is introduced into the inlet 32 of the condenser 19 through the air conduit 4 and flows into the cylindrical container 25 from the passage 37 at the back thereof, and the passage 42 between the cylindrical container 25 and the condensation cylinder 27 is passed through. Move down.
Thereafter, the compressed air moves upward from the lower side of the condensation cylinder 27, is introduced into the cylinder 27, moves up, is sent from the connecting pipe 40 to the outlet 33 through the outlet passage 38, and is connected to the relay pipe 18. To the air dryer 20.

At that time, the compressed air is pushed into a narrow and long passage 42 between the cylindrical container 25 and the condensing cylinder 27 and further collides with the upper surface in the condensing cylinder 27 with vigorous force. The liquid aggregates well and condenses, and the droplets flow down the inner surface of the cylindrical container 25 and the inner and outer surfaces of the condensing cylinder 27.
Accordingly, moisture in the compressed air is efficiently removed, a large amount of drain water is generated and flows down to the bottom of the cylindrical container 25, flows out from the through hole 30, is guided to the auto drain 21, and is stored. The flow is guided to the drain tube 23 and discharged to the outside of the dry box 7.

The compressed air from which moisture has been efficiently removed by the condenser 19 is guided to the relay conduit 18 and moved to the inlet 50 of the air dryer 20 and flows into the cylindrical container 43 from the inner passage 55. The passage 60 between the cylindrical container 43 and the dehumidifying cylinder 45 is moved downward.
Thereafter, the compressed air moves upside down from the lower side of the dehumidifying cylinder 45, is introduced into the cylinder 45 and moves up, and moves to the concave hole 64 of the air collecting cylinder 63 at the upper end thereof. It is guided to the through-hole 65 opened to 64 and is ejected into the connecting cylinder 61.

  After the ejection, the compressed air moves from the connecting cylinder 61 to the connecting pipe 58, is sent from the outlet passage 56 to the air conduit 5 through the outlet 51, moves through the air conduit 5, and is supplied to the air tool 6.

As described above, the compressed air is pushed into the narrow and long passage 60 between the cylindrical container 43 and the dehumidifying cylinder 45, and further collides with the upper surface of the dehumidifying cylinder 45 vigorously. The liquid aggregates well and condenses, and the droplets flow down the inner surface of the cylindrical container 43 and the inner and outer surfaces of the dehumidifying cylinder 45.
Therefore, moisture in the compressed air is efficiently removed, a large amount of drain water is generated and flows down to the bottom of the cylindrical container 43, flows out from the through hole 48, is guided to the auto drain 22, and is stored. The flow is guided to the drain tube 24 and discharged to the outside of the dry box 7.
Further, when the compressed air is guided to the through-hole 65 and is ejected into the connecting cylinder 61, the temperature of the supplied air to the air tool 6 is lowered because the temperature is lowered by adiabatic expansion.

13 to 15 show various applications of the present invention, and the same reference numerals are used for the components corresponding to the above-described embodiments.
Among these, FIG. 13 shows a first application form of the present invention. In this application form, instead of providing a set of a condenser 19 and an air dryer 20 connected in series in the dry box 7, the inside of the dry box 7 is shown. A plurality of sets of condensers 19 and air dryers 20 arranged in series are provided, and each set is connected in parallel to reduce the burden on the individual condensers 19 and air dryers 20, and to dehumidify or dry moisture of compressed air. The removal is mass-produced.

FIG. 14 shows a second application form of the present invention. In this application form, on the downstream side of the air conduit 5 connected to the dry box 7, the position close to the air tool 6 is substantially the same as the dry box 7 described above. The second dry box 66 is installed, and two air dryers 20 and 20 are attached adjacently to the inside of the second dry box 66, and moisture in the compressed air is removed more precisely to remove the dried air as an air tool. 6 to prevent failure and functional degradation of the air tool 6 derived from moisture in the compressed air.
In this case, since the second dry box 66 is configured substantially the same as the dry box 7, they can be shared, and can be manufactured and used reasonably and inexpensively.
The second dry box 66 can also be attached with one air dryer 20 depending on the installation conditions.

FIG. 15 shows a third application mode of the present invention. In this application mode, a compressed air cooling device 67 is inserted between the air tank 3 and the dry box 7 to cool the compressed air introduced into the condenser 19. Thus, the cooling and dehumidifying action of the condenser 19 and the air dryer 20 is reduced, and compressed air dried at a lower temperature is supplied to the air tool 6.
The cooling device 67 is wound into a coil 68 in the form of a cooling pipe 68 made of a stainless steel pipe or aluminum pipe having the same inner and outer diameter as the air conduit 4, and is erected on the installation surface 9. Stands up and communicates with the air conduit 4.
In the figure, reference numeral 70 denotes a wire netting protective net disposed outside the cooling device 67. The cooling pipe 68 and the drawing pipe 69 are brought into contact with air so that the compressed air can be cooled with air.

  As described above, the present invention makes full use of the condenser 19 and the air dryer 20 and further uses the cooling device 67 of the air cooling means to remove the moisture in the compressed air and dry it. This makes it possible to realize a rational and inexpensive production and use of a gas-liquid separation system for compressed air.

  Since the gas-liquid separation system of compressed air according to the present invention can efficiently remove a large amount of moisture in the compressed air with a non-powered and simple configuration at low cost, for example, a lot of compressed air supplied from an air compressor or the like is used in a factory or the like. It is suitable when supplying to other air tools.

4,5 Supply pipeline (air conduit)
6 Air tool 7 Dry box 11 Cover panel 18 Supply pipeline (relay conduit)
19 Condenser 20 Air dryer

21, 22 Auto drain 25 Cylindrical container 26 Head cover 27 Condensing cylinder 32, 50 Inlet 33, 51 Outlet 43 Cylindrical container

44 Head cover 45 Dehumidification cylinder 63 Air collection cylinder 65 Through hole 66 Second dry box 67 Cooling device

Claims (3)

The dry box housing the air dryer to the supply line of the compressed air is arranged, wherein the air dryer, a head cover having a communication with the inlet and outlet to the supply pipe, a bottom fitted with the head cover upper opening A cylindrical tubular container, a hollow cylindrical dehumidifying cylinder arranged in the cylindrical container and connected to the head cover so that the upper part thereof can communicate with the head cover, and a plurality of air collecting cylinders arranged in the upper part of the dehumidifying cylinder; A small hole-shaped through hole formed in the air collecting cylinder so as to be able to communicate with the outlet, and adiabatic expansion is performed by ejecting compressed air from the through hole, allowing moisture in the compressed air to be condensed, In a compressed-air gas-liquid separation system that enables supply of clean and dry compressed air to the air tool, the compressed air is condensed upstream of the air dryer in the dry box. The close placement separable condenser, 該凝 binding instrument, the head cover in communication with the supply line, a bottomed cylindrical tubular container fitted with the head cover to the upper opening, the cylindrical container A hollow cylindrical condensing cylinder whose upper part is connected to the head cover so as to communicate with the head cover, and the length of the condensing cylinder is formed to be approximately ½ of the length of the cylindrical container. A gas-liquid separation system for compressed air, wherein the half is configured to be hollow, and the compressed air collides with the upper surface of the condensation cylinder so that moisture in the compressed air can be condensed. The gas-liquid separation system for compressed air according to claim 1, wherein the condenser and the air dryer are formed in a cylindrical body having the same outer diameter, and the lengths of the outer cylindrical containers are the same . The gas-liquid separation system of compressed air according to claim 1 , wherein a base frame is surrounded and attached to a peripheral surface of a lower end portion of the dry box, and bent pieces formed on both sides of the base frame are fixed to an installation surface .

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