KR100316329B1 - A air moving pump - Google Patents

Abstract

The present invention relates to an air drive pump that can protect the air drive pump from external impact by preventing the air flow path from being exposed to the outside while minimizing the noise of the air drive pump and minimizing the wear of the spool.

Particularly, in the present invention, an air inflow path 11 through which air of an air compressor is supplied at a predetermined pressure is formed on one side, and two inner and outer air supply paths 12 and 13 penetrate downwardly on both sides, respectively. The inside of the air compression chamber 16 is formed by the sealing cap 14 and the packing 15 at both ends, and the air discharge passages 17 and 18 communicating with the air compression chamber 16 on both sides of the upper end thereof. An upper body 10 formed respectively; A lower body 20 in which a guide hole 21 is formed on a center axis, and a discharge port 22 through which the pumped liquid is discharged is discharged inside the lower end; While sealingly coupled between the upper body 10 and the lower body 20 is in communication with the inner air supply path 12 of the upper body 10, the inner cylinder 30 formed with an air distribution hole 32 )Wow; The outer cylinder communicates with the outer air supply passage 13 of the upper body 10 while being sealably coupled between the upper body 10 and the lower body 20 so as to maintain a predetermined gap with the inner cylinder 30. 40; The lower cylinder (20) is coupled to the lower end of the lower body 20 and the packing ring 51 is fixed to the inner upper end, and the lower cylinder is provided with a foot valve (52) with a ball (53) for controlling the access of the liquid at the lower end ( 50); The upper end of the packing ring 51 and the guide hole 21 of the lower body 20 is positioned inside the inner cylinder 30, and a slide hole 61 having a predetermined depth is formed from the upper end to the lower end. The lower end thereof is provided with an opening and closing hole 62 capable of shielding the packing ring 51, and a stopper 63 positioned inward of the lower body 20 at an upper side of the opening and closing hole 62. A piston rod (60) to which a piston (64) which slides on an inner wall of the inner cylinder (30) is coupled to the upper outer periphery; The spool has a lower end portion slidably installed in the slide hole 61 through the rod keeper 66 at the upper end of the piston rod 60, and the upper end portion is positioned in the air compression chamber 16 of the upper body 10. A rod 70; A predetermined height slides along the inner circumference of the air compression chamber 16 of the upper body 10 by a plurality of sealing rings 81, and the inner and outer air supply passages 12 of the upper body 10 A spool housing (80) formed with a ventilation hole (82) selectively communicating with) 13; On the inner circumference of the spool housing 80, the first spool 91 is coalesced together with the spring 92, and the through-hole 93 of the first spool 91 extends slightly larger than the spool rod 70. While fixing the second spool 94 corresponding to the inner circumference of the spool housing 80 in the middle of the upper end of the spool rod 70, the pressure is suppressed by the spring 96 inside the upper end of the spool housing 80. A spool member 90 in which the third spool 97 is installed; It is composed of such features.

Description

Air moving pump {A air moving pump}

The present invention relates to an air drive pump, and more particularly, to protect the air drive pump from external impact by preventing the air flow path from being exposed to the outside, while minimizing noise of the air drive pump and minimizing wear of the spool. The present invention relates to an air drive pump.

In general, when transporting a liquid having explosive or somewhat high viscosity such as lubricating oil, an air driving pump excluding electric means is used. The configuration of the air driving pump will be described with reference to FIG. An air inflow path 1a through which air is supplied by pressure is formed, and two air supply paths 1b and 1c are formed on another side, and an air compression chamber 1d of a predetermined diameter is formed therein. The upper body 1 is provided with a bearing ball 1g corresponding to the ball bearing 1f pressed against the predetermined pressure by the spring 1e so as to face each other on both sides of the upper end; The air inlet passage 2a is coupled to the lower end of the upper body 1 and communicates with the air supply passage 1b of the upper body 1 and the hose 1h to one side, and an air compression chamber (2) is formed therein. A lower body 2 configured with 2b); A tubular shape in which an air inflow path 2a is coupled to the lower end of the lower body 2 and communicates with the air supply path 1c of the upper body 1 and the hose 1i to the foot valve 3a of the lower part 2. A cylinder 3; A piston rod (4) which slides vertically through the foot valve (3a) and the lower body (2); The spool (5) is installed on the upper end of the piston rod (4) and the operation position is determined by the ball bearing (1f) while selectively shielding the air supply path (1b) (1c) of the upper body (1) according to the operation thereof )and; A seal cap (6) installed inside the air compression chamber (1d) of the upper body (1) in a state of being coupled to the piston rod (4) and shielding a through hole of the lower body (2); It becomes a structure containing these.

However, the conventional air drive pump configured as described above is very sturdy because the hoses 1h and 1i are connected to the outside of the bodies 1 and 2, and the hoses 1h and 1i are There is a risk of inadvertent damage, and the noise is severe because the lower end of the spool 5 operated by the piston rod 4 repeatedly and collides with the stopper 6a of the seal cap 6 at a very high speed. Since (5) is repeatedly associated with the ball bearing 1f, there are many problems such as their wear is extremely severe, resulting in greatly shortening the water surface of the air drive pump.

Accordingly, the present invention has been invented in view of the above problems, while preventing the air flow path from being exposed to the outside, while protecting the air drive pump from external impact, while minimizing the noise of the air drive pump, the wear of the spool is minimized. The purpose is to provide an air driven pump that can.

1 is a cross-sectional view of an air driving pump according to the prior art,

2 (a) and 2 (b) are enlarged cross-sectional views of main parts of an air driving pump according to the present invention;

Figure 3 (a) and (b) is a cross-sectional view showing an operating state of the air drive pump according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: upper body 11: air inlet

12: Inside air supply passage 13: Outside air supply passage

16: air compression chamber 17, 18: air discharge furnace

20: bottom 21: guide

22: outlet 23: screw

30: Inner cylinder 31: Ring

32: air distribution hole 40: outer cylinder

50: lower cylinder 51: packing ring

52: foot valve 53: ball

60: piston rod 61: slide ball

62: opening and shutting 63: stopper

64: piston 70: spool rod

71: stopper 80: spool housing

82: vent 90: spool member

91: First spool 92: Spring

93: Through hole 94: Second spool

96: Spring 97: Third spool

100: noise prevention means

In order to achieve the above object, the present invention provides an air inlet path through which air of an air compressor is supplied at a predetermined pressure on one side thereof, and two inner and outer air supply paths are formed through both sides of the air compressor. An upper body having an air compression chamber formed by a sealing cap and a packing at both ends, and an air discharge passage communicating with the air compression chamber at both upper ends thereof; A lower body having a guide hole formed on a central axis and having a discharge hole through which a liquid pumped inside the lower end is discharged; An inner cylinder having an air distribution hole formed while being communicatively coupled between the upper body and the lower body and communicating with an inner air supply path of the upper body; An outer cylinder communicatively coupled between the upper body and the lower body to maintain a predetermined gap with the inner cylinder and in communication with an outer air supply path of the upper body; A lower cylinder having a foot valve in which a packing ring is fixed to an inner upper end and coupled to a lower end of the lower body, and a ball valve is installed at a lower end thereof to control the access of liquid; The upper end is located inside the inner cylinder through the guide hole of the packing ring and the lower body, a slide hole of a predetermined depth is formed from the upper end to the lower end, and an opening and closing hole is installed at the lower end to shield the packing ring. A piston rod disposed at an inner side of the lower body at an upper side of the opening and closing portion, and a piston rod coupled to the inner wall of the inner cylinder at an upper outer periphery thereof; A spool rod having a lower end portion slidable through a rod keeper at an upper end of the piston rod and slidable in a slide hole, and having an upper end portion in an air compression chamber of the upper body; A spool housing which slides a predetermined height in close contact with a plurality of sealing rings along an inner circumference of the air compression chamber of the upper body and has a ventilation hole selectively communicating with the inner and outer air supply paths of the upper body; A first spool is coalesced together with a spring at an inner circumference of the spool housing, the through-hole of the first spool extends slightly larger than the spool rod, and a second corresponding to the inner circumference of the spool housing at the upper middle of the spool rod. A spool member for fixing the spool and having a third spool installed in the upper end of the spool housing to be pressed by a spring; And the like.

The present invention is also characterized in that the noise preventing means is installed in the air discharge path of the upper body.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 (a) and 2 (b) are cross-sectional views of main parts of an air driving pump according to the present invention.

First, the upper body 10 is formed with an air inflow path 11 through which air of the air compressor is supplied at a predetermined pressure on one side, and two inner and outer air supply paths 12 (12) on both sides of the upper body 10 ( 13 is penetrated downwards, respectively, and the inside of the upper body 10 is formed with an air compression chamber 16 by the sealing cap 14 and the packing 15 at both ends, and both sides of the upper end of the upper body 10. Air discharge passages (17) and (18) are formed in communication with the air compression chamber (16), respectively, and a step portion is formed at the lower end of the upper body (10) so as to have a predetermined diameter, and the threaded portions (19) are formed at each of the outer peripheral portions thereof. do.

In addition, the lower body 20 has guide holes 21 formed on the center axis thereof, and a discharge port 22 through which the pumped liquid is discharged is formed through the lower side of the lower body 20. Stepped to the predetermined diameter to the upper end of the (20) and the threaded portion 23 corresponding to the threaded portion 19 of the upper body 10 is formed in these outer peripheral portions, respectively.

The inner cylinder 30 which is sealingly coupled to the small diameter threaded portions 19 and 23 of the upper body 10 and the lower body 20 by a ring 31 is an inner air supply passage of the upper body 10 ( In communication with 12), the air distribution hole 32 is formed through the lower side of the inner cylinder (30).

The outer cylinder 40, which is installed with a predetermined gap outside the inner cylinder 30, is sealed with a ring 41 in the large diameter threads 19 and 23 of the upper body 10 and the lower body 20. Possible coupling is in communication with the outer air supply passage 13 of the upper body (10).

The lower cylinder 50 is screwed to the lower end of the lower body 20, the packing ring 51 is fixed to the inner upper end of the lower cylinder 50, the lower cylinder 50, the ball 53 to control the entrance of the liquid to the lower end This built-in foot valve 52 is installed.

The piston rod 60 is located in the inner cylinder 30 through the upper end portion of the lower cylinder 50 through the packing ring 51 and the guide hole 21 of the lower body 20, the piston rod A slide hole 61 of a predetermined depth is formed from an upper end of the 60 to a lower end, and a lower end of the piston rod 60 is provided with a cone-shaped opening / closing hole 62 capable of shielding the packing ring 51. A stopper 63 located inward of the lower body 20 on the upper side of the opening / closing opening 62 is coupled by a pin, and the piston slides to the inner wall of the inner cylinder 30 on the outer periphery of the upper end of the piston rod 60. 64 is coupled with the ring 65, the piston rod 60 and the lower body 20 is kept airtight by the packing (68) of the packing fixing (67).

The spool rod 70 has a lower end portion slidably installed in the slide hole 61 through the rod keeper 66 at the upper end of the piston rod 60, and a stopper having a diameter larger than that of the hollow of the rod keeper 66 at the lower end thereof. An 71 is installed, and the upper end of the spool rod 70 is positioned inside the air compression chamber 16 of the upper body 10.

The spool housing 80 slides a predetermined height in close contact with a plurality of sealing rings 81 along the inner circumference of the air compression chamber 16 of the upper body 10. A vent hole 82 selectively communicating with the air supply passages 12 and 13 is formed to penetrate laterally. At this time, the spool housing 80 is no longer inserted by the locking step 16a formed at the inner lower end of the air compression chamber 16.

The spool member 90 has a first spool 91 in the inner periphery of the spool housing 80 is coalesced together with the spring 92, the through hole 93 of the first spool 91 to the spool rod 70 Slightly larger than), and a second spool 94 corresponding to the inner circumference of the spool housing 80 in the middle of the upper end of the spool rod 70 is fixed together with the ring 95, while the spool housing 80 The third spool 97 is installed to be pressed by the spring 96 inside the upper end.

On the other hand, the noise preventing means 100 to remove the noise generated while the compressed air is discharged in the air discharge path (17) 18 of the upper body 10, the noise preventing means 100 In the form of a silver metal ring, air is discharged through a fine gap between the upper body 10 and its lower end, and the sealing cap 14 and its upper end.

Referring to the effect of the air drive pump configured as described above are as follows.

First, when high pressure air flows from the air compressor into the air inflow path 11 of the upper body 10, the air flows into the air inflow path 11 of the upper body 10 as shown in FIG. After the air enters the outer air supply path 13 of the upper body 10, it is supplied between the inner cylinder 30 and the outer cylinder 40, and the air supplied thereto is supplied to the air distribution hole of the inner cylinder 30. It is supplied through the 32 and then raises the piston 64 on top of the piston rod 60.

At the same time, it enters between the air compression chamber 16 and the spool housing 80, and then flows into the interior through the vent hole 82 of the spool housing 80, and flows into the interior of the spool housing 80. The supplied air passes through the through hole 93 of the first spool 91 and is supplied to the outer circumferential side of the spool housing 80 through a ventilation groove (not shown) at the bottom of the first spool 91 to upwardly spool the housing 80. Will be raised. At this time, the second spool 94 of the spool rod 70 raises the third spool 97 to suppress the spring 96 at a predetermined pressure.

At this time, when the piston rod 60 is raised, the ball 53 of the foot valve 52 is raised while the liquid flows in and the opening and closing port 62 at the end of the piston rod 60 closes the packing ring 51. The liquid flowing into the lower body 20 is discharged through the discharge port 22, and the air at the upper end of the piston 64 is supplied to the inner air supply path of the upper body 10 as shown by the dotted line in FIG. It is exhausted to the air discharge path 17 through 12, the noise discharge means 100 is installed in the air discharge path 17, the noise is hardly generated.

On the other hand, when the spool housing 80 is raised, the flow path of the air flowing into the air inlet 11 of the upper body 10, as shown in Figure 2 (b) is changed, the introduced air is the air compression chamber After entering between the 16 and the spool housing 80, the air introduced into the spool housing 80 through the vent hole 82, the air introduced into the spool housing 80 is the third spool Passed through the hollow of the 97 is supplied to the outer peripheral side of the spool housing 80 to lower the upper end of the spool housing 80. At this time, the third spool 97 is lowered by the restoring force of the spring 96, and the second spool 94 of the spool rod 70 pulls down the first spool 91 to lower the spring 92 by a predetermined pressure. Will be suppressed.

At the same time, the air introduced into the air inflow path 11 of the upper body 10 enters the inner air supply path 12 of the upper body 10 like a solid arrow, and then is supplied to the inner cylinder 30. The air supplied thereto will lower the piston 64.

At this time, when the piston rod 60 is lowered, the ball 53 of the foot valve 52 blocks the hole thereby blocking the inflow of liquid and at the same time the opening and closing port 62 of the end of the piston rod 60 is sealed by the packing ring ( Liquid, perhaps spaced from 51 and possibly hydraulic between, flows into the top of the bucking ring 51.

Then, as the piston 64 descends, the lower air is exhausted to the inner cylinder 30 and the outer cylinder 40 as shown by the dotted line in FIG. 2 (b), and then to the outside air supply path of the upper body 10. It is exhausted to the air discharge path 18 through 13, the noise discharge means 100 is installed in the air discharge path 18, so that almost no noise occurs.

Therefore, the present invention is to install the inner cylinder 30 and the outer cylinder 40 to prevent the air flow path to the outside to protect the air drive pump from external shocks, while eliminating the mutually contacting parts of the air drive pump Springs 92 and 96 are installed in the first spool 91 and the third spool 97 which are operated at the same time, and the noise prevention means 100 is installed in the air discharge paths 17 and 18 to minimize noise. At the same time there is a very useful effect that can minimize the wear of the spool.

Claims (3)

An air inflow path 11 through which air of the air compressor is supplied at a predetermined pressure is formed at one side, and two inner and outer air supply paths 12 and 13 are formed at both sides downwardly, respectively, and both ends thereof An air compression chamber 16 is formed by the sealing cap 14 and the packing 15 of the upper body, and each of the upper bodies on which the air discharge paths 17 and 18 communicating with the air compression chamber 16 are formed at both upper ends thereof. 10); A lower body 20 in which a guide hole 21 is formed on a center axis, and a discharge port 22 through which the pumped liquid is discharged is discharged inside the lower end; While sealingly coupled between the upper body 10 and the lower body 20 is in communication with the inner air supply path 12 of the upper body 10, the inner cylinder 30 formed with an air distribution hole 32 )Wow; The outer cylinder communicates with the outer air supply passage 13 of the upper body 10 while being sealably coupled between the upper body 10 and the lower body 20 so as to maintain a predetermined gap with the inner cylinder 30. 40; The lower cylinder 20 is coupled to the lower end of the lower body 20 and the packing ring 51 is fixedly installed at the inner upper end, and the lower cylinder at which the foot valve 52 with a ball 53 for controlling the access of the liquid is installed at the lower end thereof. 50); The upper end of the packing ring 51 and the guide hole 21 of the lower body 20 is positioned inside the inner cylinder 30, and a slide hole 61 having a predetermined depth is formed from the upper end to the lower end. The lower end thereof is provided with an opening and closing hole 62 capable of shielding the packing ring 51, and a stopper 63 positioned inward of the lower body 20 at an upper side of the opening and closing hole 62. A piston rod (60) to which a piston (64) which slides on an inner wall of the inner cylinder (30) is coupled to the upper outer periphery; The spool has a lower end portion slidably installed in the slide hole 61 through the rod keeper 66 at the upper end of the piston rod 60, and the upper end portion is positioned in the air compression chamber 16 of the upper body 10. A rod 70; A predetermined height slides along the inner circumference of the air compression chamber 16 of the upper body 10 by a plurality of sealing rings 81, and the inner and outer air supply passages 12 of the upper body 10 A spool housing (80) formed with a ventilation hole (82) selectively communicating with) 13; At the inner circumference of the spool housing 80, the first spool 91 is coalesced together with the spring 92, and the through hole 93 of the first spool 91 extends slightly larger than the spool rod 70. While fixing the second spool 94 corresponding to the inner circumference of the spool housing 80 in the middle of the upper end of the spool rod 70, the pressure is suppressed by the spring 96 inside the upper end of the spool housing 80. A spool member 90 in which the third spool 97 is installed; Air drive pump, characterized in that consisting of. The method of claim 1, Air driving pump, characterized in that the noise prevention means 100 is installed in the air discharge path (17) (18) of the upper body (10). The method of claim 2, Air driving pump, characterized in that the noise prevention means 100 is formed in a ring shape.