JPH075863Y2 - Compressed air dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a compressed air drying device used for an air brake pressure source of a vehicle or the like.

[Conventional technology]

As a compressed air drying device of this means, there is a conventional Japanese Patent Laid-Open No.
There is one disclosed in Japanese Patent Publication No. 44022. This compressed air drying device introduces the compressed air discharged from the air compression device into the drying cylinder through an inlet formed in the base member, and the compressed air is filled in the drying cylinder while the compressed air passes through the drying cylinder. The water contained in the compressed air is removed with a different adsorbent, and the compressed air is allowed to flow out to the air storage (regenerated welding air storage) formed between the drying cylinder and the cover member that covers the drying cylinder and is formed from the air storage tank to the base member. It is configured to supply to the outside through the outlet,
In the base member, a discharge valve that connects and disconnects the discharge port and the inside of the drying cylinder is provided.

[Problems to be solved by the device]

By the way, in this conventional compressed air drying device, the upper surface of the base member is covered with a lid member with a plurality of sealing members (seal rings) interposed, and the drying cylinder is fixed to the base member via the lid member. Therefore, there is a problem that the number of parts is increased and, in particular, the work of screwing is troublesome, the productivity is not good, and the cost is increased.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a compressed air drying device capable of improving the workability of assembly work and increasing productivity as compared with the related art.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention is one in which a plate member is formed integrally with a drying cylinder.

[Action]

In the present invention, the plate-shaped member is not necessary, and the drying cylinder can be directly fixed to the base member, so that the number of assembling steps is reduced.

Further, when the cover member is attached to the base member, since the guide portion and the flange portion are integrally formed on the drying cylinder including the portion to be the lid member, the drying cylinder can be formed simply by fitting the cover member to the guide portion. The cover member and the cover member are positioned relative to each other in the radial direction, which facilitates alignment between the two during assembly work.

Further, when the cover member is attached to the upper surface of the base member via the outward flange portion, the outward flange portion can be located on the flange portion, so that the common fixing means can simultaneously cover the drying member and the base member. Can be fixed against.

Further, the flange portion and the base member are respectively provided with concave-convex engaging portions, and the concave-convex engaging portion positions the drying cylinder including the portion to be the lid member and the base member. Alignment with the member becomes easier.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 is a base member, which has a recessed portion 3 that opens to an upper surface 2 in a central portion, and a cylindrical portion 4 that concentrically opens upward in the recessed portion 3 is a recessed portion. An inlet passage (longitudinal passage) 5 is defined between the inner peripheral surface of the outer peripheral surface 3 and the inner peripheral surface of the outer peripheral surface 3, and an outer peripheral portion 6 is formed with a radial inlet 7 and an outlet 8 opening to the peripheral surface, and in the lower portion. A discharge cylinder portion 10 having a discharge port 9 is formed. A plurality of radial passages 4A communicating with the inlet passage 5 are formed at the base of the tubular portion 4. Entrance 7 and entrance passage 5
A circulating passage 11 is provided between the and, and the circulating passage 11 is a multiple bending passage formed of a plurality of arcuate partition walls 12 having different radii from the center of the base member 1, and the compressed air introduced is Has the effect of cooling. The outlet 8 communicates with an outlet passage 13 opening on the upper surface 2. A positioning convex engaging portion 14 protruding from the upper surface 2 is formed on the outer peripheral portion 6 of the base member 1, and a circumferential groove 16A is formed inside the positioning convex engaging portion 14 and an outlet is formed. A circumferential groove 16B that surrounds the passage 13 is formed. A circumferential groove 17 is also formed on the upper surface of the tubular portion 4. A sealing member 18 is provided in each of the circumferential grooves 16A, 16B and 17.
A, 18B and 19 are fitted.

Reference numeral 20 denotes a drying cylinder, and a lid member 60 extending outwardly from this radius is integrally formed around the lower portion of the bottomed drying cylinder main body 21. The lid member 60 includes a guide portion 22 that surrounds the lower portion of the drying cylinder body 21, and a flange portion 23 that is continuous with the guide portion 22.
And are formed. In this guide portion 22, the lower end surface is
It has an arcuate partition wall 24 that vertically opposes the top surface of the partition wall portion 12 that forms the circulating passage 11, and also has a passage 25 that communicates with the outlet passage 13. Further, the flange portion 23 has a width in the radial direction which is fitted to the outer peripheral portion 6 of the base member 1, and a concave engaging portion 25 which is fitted to the positioning convex engaging portion 14 is formed on the lower surface thereof. The drying cylinder 20 is placed on the base member 1 by engaging the concave engaging portion 26 with the convex engaging portion 14, and in this state, the outlet passage
13 and the passage 25 are coaxially communicated with each other, and the partition wall 24 corresponds to the partition wall 12
To face.

The drying cylinder body 21 has a through hole 27 communicating with the inlet passage 5 at the bottom thereof.
The filter device 29 is provided on the bottom 28, and the filter device 29 is housed on the boss portion 30 projecting inward from the center of the bottom 28 with a screw 31 on the bottom side. The drying cylinder main body 21 is covered with a lid 35 having a throttle hole 32 and an outlet hole 34 closed by a check valve 33, and a space above the filter device 29 is a porous plate between the filter device 29 and the filter device 29. A resorbable adsorbent 38 is filled through the filter member 37 and the filter member 37, and the layer of the adsorbent 38 is pressed by a spring 41 via the porous member 39 and the filter member 40.

42 is a cover member, which is circumscribed to the guide portion 22 of the drying cylinder 20.
It has an inner diameter to be fitted, an outward flange portion 43 is formed in the opening, covers the drying cylinder 20, and overlaps the outward flange portion 43 with the flange portion 23 of the drying cylinder 20 to form a base member together with the drying cylinder 20. 1 is fixed by bolts and nuts (not shown), and a space 44 serving as a regenerating air storage tank is defined between the drying cylinder main body 21 and the drying cylinder main body 21. Reference numeral 45 denotes a sealing member, which is housed in the cover member 42 in a space 46 formed by the corner portion of the outward flange portion 43 and the corner portion of the flange portion 23 of the drying cylinder 20.

47 is a discharge valve, which is fitted in the discharge cylinder 10 and has a retaining ring 48.
The piston 50 is housed in a plug 49 which is prevented from coming off by a valve spring 51, and the piston 50 is urged upward by a valve spring 51 to extend into the cylinder portion 4. The control room 52 leading to the (not shown) is partitioned. At the lower end of the piston 50, a valve element 54 having a valve seat at the peripheral portion of a valve hole 53 formed in the plug 49 is attached by a bolt 55.

In this configuration, compressed air from an air compressor (not shown) is supplied to the inlet 6, and the supplied compressed air passes through the circulation passage 11, the inlet passage 5, and the through hole 27, and the drying cylinder main body 21.
Enter the filter device 29, the perforated plate 36, the filter member 37 to rise the layer of the adsorbent 38, the moisture is removed by the adsorbent 38, flow out from the outlet hole 34 into the air storage tank 44, The air storage tank 44 is filled, passes through the passage 25, passes through the outlet passage 13 and the outlet 8, and is supplied to an air storage tank (main air storage tank) (not shown) through a pipe connected to the outlet 8. When an air pressure signal is supplied from the governor device that monitors the pressure in the air storage tank to the control chamber 52 through the control port, the discharge valve 47 opens and the drain accumulated in the bottom of the recess 3 is discharged. Together with the air storage tank 44, the drying cylinder is passed through the throttle hole 32
Dry compressed air flows back into the inside of 24, and the adsorbent 38 is regenerated.

In this embodiment, a flange portion 23 is formed in the lower portion of the drying cylinder main body 21, and the bottom 28 of the drying cylinder main body 21 and the flange portion 23 directly close the upper surface of the base member 1 to form the base member 1. Since it is fixed, the above-mentioned conventional plate-shaped member becomes unnecessary, and the screwing work for fixing the drying cylinder to the plate-shaped member is not required, so that the number of assembling steps can be reduced.

Further, in this embodiment, since the guide portion 22 is formed so that the void portion thereof becomes a part of the passage of the compressed air, the cooling effect of the compressed air can be enhanced as compared with the conventional case.

[Advantages of the Invention] As described above, the present invention directly forms the drying cylinder by integrally forming the guide portion and the flange portion, instead of the plate-shaped member, in the drying cylinder including the portion to be the lid member. Since it can be fixed to the base member, the number of parts can be reduced and screwing work can be eliminated as compared with the conventional case. Therefore, workability of assembly work can be improved and productivity can be improved.

Further, when the cover member is attached to the base member, only by fitting the cover member to the guide portion, the drying cylinder is positioned in the radial direction relative to the cover member. Therefore, the workability of the assembling work is improved.

Further, when the cover member is attached to the upper surface of the base member via the outward flange portion, the outward flange portion can be located on the flange portion, so that the common fixing means can simultaneously cover the drying member and the base member. It can be fixed to, and the workability of the assembly work is improved.

Further, the flange portion and the base member are each provided with a concave-convex engaging portion, and the concave-convex engaging portion positions the drying cylinder including the portion to be the lid member and the base member. Since the positioning with respect to the base member becomes easier, the workability of the assembling work is improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention. 1 ... Base member, 7 ... Inlet, 8 ... Outlet, 10 ... Release valve, 14 ... Convex engaging part, 20 ... Drying cylinder, 21 ... Drying cylinder main body, 22 ... Guide part, 23 ...... Flange part, 26 …… Concave engagement part, 42 …… Cover member, 43 …… Outward flange part.

Claims (2)

[Scope of utility model registration request] 1. A base member having an inlet communicating with an air compressor and an outlet communicating with an air storage tank, and an inlet formed in the base member, one end of which communicates with the inlet and the other end of which opens on the upper surface of the base member. A passage, an outlet passage formed in the base member, one end of which communicates with the outlet and the other end of which opens on the upper surface of the base member; a discharge passage formed in the base member, which communicates the inlet passage with the outside air; A release valve that opens according to a command from the outside, a lid member that covers the upper surface of the base member, and a renewable adsorbent that is placed inside the upper surface of the base member with the lid member interposed therebetween A drying cylinder, a cover member surrounding the drying cylinder and forming a space around the drying cylinder, an outward flange portion formed on the cover member and fixed to an upper surface of the base member, and a lid. A communication passage formed in the member that connects one end side of the adsorbent to the inlet passage A compressed air drying device provided with a delivery passage formed on the lid member and connecting the other end side of the adsorbent to the outlet passage through the void, the lid member guiding the inner peripheral surface of the cover member. A compressed air drying device integrally formed with the drying cylinder as a shape having a guide portion fitted in the cover member and a flange portion interposed between the outward flange portion and the upper surface of the base member. 2. The compressed air drying device according to claim 1, wherein an uneven engaging portion is provided between the flange portion and the upper surface of the base member.