JPS6095194A - Complete stroke automatically changing-over device and automatic intensifying compressor having said device - Google Patents

Abstract

PURPOSE:To stabilize operation of a compressor by completely controlling the reciprocating stroke motion of an operating piston, making it follow the periodically changing vertical reciprocation of a changeover spool valve, thus providing a complete stroke mechanism which is changed over only after a certain stroke point is reached. CONSTITUTION:When an operating piston 3 comes to a bottom dead center, pressurized air which entered an upper chamber 2a, also enters the bottom side of a changeover valve chamber 7, causing a changeover spool valve 17 to rise and, before it reaches the top dead center, an air feeding passage 8 is shifted to a lower stage changeover annular passage 21 and an exhaust passage 9 is shifted to a middle stage changeover annular passage 20. As a result, the presserized air fed through the air feeding passage 8 is sent into a lower chamber 2b through the lower stage changeover annular passage 21 and a lower flow route 11, causing the operating piston 3 to return to rising motion. Thus, the reciprocating stroke motion of the operating piston 3 is completely controlled, following the periodically changed virtical reciprocation of the changeover spool valve 17, that means, it is a complete stroke mechanism that changes only after a certain stroke point is completely reached, securing its stability for a long time operation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a complete stroke automatic switching device for converting fluid pressure energy into mechanical linear reciprocating energy, and a pressure boosting automatic compressor equipped with the device as a drive device. Regarding.

The conventional full stroke automatic switching device in this building is patent No. 586513 and registration number 9 of the patent applicant P9T1.
There is an invention and a device according to No. 06048 shown in FIG. increases within a certain enriched range.

By moving this sliding valve seat body (c), the annular valve (to be turned into an annular valve) is moved in the axial direction in a downward motion, and the popular passage (e) is moved.
and the exhaust passage (H), the valve chamber (G), and the annular passage (H).
By switching the respective retardation positions with the diaphragm (2), the communication of popular pressure can be divided by the diaphragm (2) or the lower chamber (2) or the diaphragm (2). This movement causes the piston (4) fixed to the diaphragm (4) to move up and down, so that the piston (4) moves in the axial direction together with the diaphragm (4) which moves in a completely constant stroke. Configure it to do so. However, since the follow-up interlock between the diaphragm (S) and the sliding valve seat body 1=+ is performed using the compression coil spring ψ) (Y) inserted in the valve rod (W) as a transmission medium, it is not suitable for long-term use. As a result, the compression coil spring (middle) (Y) becomes deformed due to mechanical fatigue, and the stroke length fluctuates, making it unable to exert the normal elastic force of the pressure wire, making it impossible to operate, and forcing it to stop. In addition, the compression coil spring that backs up the
Similarly, spring fatigue accumulated and force fluctuations occurred, resulting in a lack of stability.

In view of the drawbacks of the conventional full stroke automatic switching device, the present invention completely eliminates the spring-type switching mechanism and completely mechanically improves the periodic flow path switching mechanism operated only by fluid pressure. It is an object of the present invention to provide a fluid-pressure-operated pressure boosting compressor in which a compressor cylinder is connected to a switching device and an operating cylinder incorporated therein in a -A-type manner.

A central embodiment of the complete stroke automatic switching device 11 [A of the present invention will be described with reference to FIGS. 2 and 3.

2 and 3 are central vertical cross-sectional views of the front of the full stroke automatic switching device of the present invention, in which FIG. 2 shows the cutting spool valve and the operating piston in the 1st position state, and FIG. 3 shows the same state.・
Each shows the top dead center state.

In the figure, / is an operating cylinder, and an operating piston 3 that partitions an upper chamber 2a and a lower chamber 2b into the internal operating cylinder chamber λ is vertically slidably fitted (2, the end of the paper is attached to the bottom end wall of the joint
It is sealed with φ.

j is an O-ring group.

B is a bottomed switching valve case that is connected in series in a straight line on the operating cylinder 7, and the side wall 6a has an air supply passage t and an exhaust passage connecting the internal switching valve chamber 7 and the outside, and a switching valve chamber 7 and an upper flow passage 10 and a lower flow passage C/l which respectively communicate with the lower chamber λb through the upper chamber core a or intermediate end wall part @lI-, respectively, and the bottom end wall 6b.
A slow-moving bottom flow passage 13 is provided in the cut-off valve chamber 7 and the lower end portion of the central hole 12, and the upper end of the central hole 12 opens into the central protruding step SL-hiro and the lower end opens into the central concave step /J-. It becomes.

16 is a muffler attached to the outer end of the exhaust passage.

/7 is a switching spool valve that is vertically slidably fitted into the switching valve chamber 7 of the switching valve coos B, and the upper end face /7a passes through the axis of the cylindrical wall body 1g disposed in the internal axial direction. and lower end surface/
While vertically attaching the guide pipes 1 to 7'b, which are open to each shaft, in the bottom dead center state shown in FIG. 2, the air supply passage g and the upper flow passage IO are connected to the top dead center state shown in FIG. In the state, the medium wave switching ring passage 20 which switches and communicates the exhaust passage and the upper flow passage 10 is connected to the hollow part 7g, and in the bottom dead center state, the lower flow passage 11 is connected to the hollow part 7g.
At the top dead center state, the first stage cutoff passage 21 is switched to connect the first part flow passage // to the air supply passage t, and at the bottom dead center state, the upper stage cutoff passage 21 is switched to communicate the exhaust passageway to the desired body part /l. A concave ring is provided on the outer peripheral surface of each of the breakable paths λ).

Reference numeral 23 denotes a central screw hole placed on the upper end of the switching valve case 6 and the upper end of the switching valve chamber 7, which is sealed for several days, and a vertical screw protrusion attached to 2j. The lower end protrusion 2B is made to hang down to the center of the upper mouth of the guide pipe.

27 Co., Ltd. Connector bottom end wall cut + is passed through the shell and integrated with the piston rond 2 which is connected to the center shaft of the operating piston 3 by a spiral shell. This is a slide pipe that is inserted into the lower opening of the guide pipe and stands upright, and has an axial ventilation passage cot that communicates with the lower chamber 2b vertically inserted therein, and the axial ventilation passage 2 that communicates with the lower chamber 2b.
A ball valve 3 is provided with a check valve type 30 continuously installed inside the radial valve seat part noa a which tapers the diameter of the upper end open lokota a of 7, and is backed up by an internal pressure-acting coil spring 31.
Press 2 onto the radial valve seat 27a and press the upper end - Rozzo a.
t[! 1! However, when the slide pipe 27 reaches the upper position together with the operating piston 3, as shown in FIG. The ball valve 3) is pressed by the external force of the clamping coil spring 31 by Yao M2 B, and the check ball valve to be opened is inserted into the check valve chamber 3Q, while the upper part As shown in FIG. 2, a concave ring is formed on the outer periphery of the switching ring passage 33 which communicates with the bottom mud passage/3t and the inside of the central concave step lj when the slide pipe 27 reaches the bottom dead center integrally with the operating piston 3. It will be set up.

3≠ is a nut that is screwed into the chaste thread portion of the piston rond 2 and which of the operating pistons 3, and has a dimension that fits into the concave stepped portion /j when the operating piston 3 reaches the top dead center as shown in FIG. Becomes a form.

Next, a second embodiment of the pressure increasing automatic compressor B with a complete stroke automatic switching device of the present invention will be explained with reference to FIG.

FIG. 4 is a central vertical cross-sectional view of the essential parts of the automatic pressure boosting compressor with automatic full stroke switching device according to the present invention.

In the figure, 3j is a compressor cylinder that is integrally connected to the bottom end wall member of the joint that runs over the full stroke automatic switching device 1iftA so that its 111 line matches the shaft line of the full stroke automatic switching device A and becomes straight. , internal pressure increase, piston rod entering the cylinder chamber 36, 1 of 2ff
A pressure increase plunger 37 fixed to the end and partitioned into an upper chamber 36a and a lower chamber 36b is slidably fitted so as to be vertically movable.

3t is an upper supply line 111 installed at the bottom end wall member of the joint ≠, and is connected to the upper chamber JAaK communicating feed line 3 via a reversal valve≠O.

44/U A partial supply passage installed in the bottom wall part 1I-2 that seals and closes the open opening at the lower end of the compressor cylinder 33, and communicates with the lower chamber 36b so that the supply can be carried out in one direction. It is connected via a check valve 1I-3.

lI-≠ is an upper discharge passage installed on the bottom end wall side of the joint≠, and the upper chamber jAaK late passage slow discharge conduit l1-s
and is connected via a check valve 1I-6.

Reference numeral t7 denotes a lower discharge passage installed in the paper end wall portion ψλ, which communicates with the outlet chamber 36b and is connected to the reference F outlet pipe 4Lj through a check valve.

1l-2 is a pressure booster plunger 37 between histone rods 2
It is a nut that is screwed into the shell thread part, and when the pressure increase plunger 37 reaches the bottom dead center, it fits into the recessed step jO formed in the center of the inner bottom surface of the bottom end wall member≠2. The size and form will be as follows.

Next, the operation of the full stroke automatic switching device A of the present invention will be explained.

First of all, when lowering the operating piston 3, the threat is that the air at a pressure of, for example, 10°C, sent into the air supply passage, is caused by the middle switching ring w.
The pressure inside the lower chamber 2b flows from the lower flow passage l/ to the lower switching ring passage 2/ and the cavity. 1
g, all nine mufflers 16 are discharged to the outside air through the upper switching magnetic path 2.2 and into the exhaust passage.

When the working piston 3 reaches the bottom dead center as shown in Fig. 2,
The pressure air that has entered the upper chamber 2a is transferred to the switching ring path 33 and the bottom flow path 13.
t-The switching spool valve 17 starts to rise to enter the switching valve chamber 7 side, and as shown in FIG. As a result, the air supply passage is switched to the lower switching path #1 and the exhaust passage is switched to the middle switching ring path O, so that the pressurized air sent from the viscous passage is transferred to the first switching slope 2/.

Air is supplied to the lower chamber 2b through the lower flow path //, so the actuating piston 3 starts its upward return movement, and as a result, the upper chamber 2
a The internal pressure air is in the upper flow passage lo.

Muffler / 6 reaches the exhaust passage after passing through the middle switching ring road 20mm
is released into the outside air.

When the working piston 3 reaches the top dead center as shown in Fig. 3,
Since the slide pipe 27 also comes out at the top dead center in one body, the protrusion s26 of the adjustment screw protrusion 3 that has entered the upper end opening 2a closes the valve hole kota b of the radial valve seat core a. By pushing down the hole f1 and 32, which had been suppressed, against the elastic force of the pressure supply coil spring 31, the check pole valve is opened, and the internal pressure of the lower chamber 2b is released from the air inlet path λ. As the switching spool valve 17 starts to descend from the upper end opening 2'la to the large side of the switching valve 7, the switching spool valve 17 starts to descend again, and as shown in FIG. While reaching the dead point, the air flow path is switched to the middle stage switching magnetic path, the exhaust passage is switched to the upper switching magnetic path, and as a result, the pressure sent from the wake passage R is switched to the middle stage switching. It enters the upper chamber 2a through the broken path 20 and the upper flow passage IO metal, and depresses the operating piston 3, and accordingly, the pressure inside the lower chamber 2b flows into the lower flow passage.
On the way, it flows through the lower switching ring path 2/, the cavity/221, and the upper switching magnetic path 221, and is discharged to the outside through the muffler/6 and the exhaust passage.

Thus, the full stroke automatic switching mount A of the present invention is as follows:
Initially, it returns to its original state, completes one cycle of movement, and then repeats the same cycle.

That is, since the reciprocating stroke movement of the working piston 3 is continuously and completely controlled by following the limited switching up and down movement of the switching spool valve 17, the present invention does not reach a completely constant stroke point. It is a full stroke mechanism that does not switch over and is stable over long periods of time.

Therefore, the stroke switching operation does not have the instability and shock of conventional devices that narrow the switching strip, and can be performed quietly and evenly and smoothly, and does not use members that cause mechanical fatigue during switching. So it has a long lifespan and can be used for many years.

The pressure boosting automatic compressor B of the present invention, which is equipped with the full stroke automatic switching device A that operates in this manner, operates integrally with the working piston 3 through the working piston rod 2 ft. 37 performs reciprocating sliding.

Therefore, when the pressure increase plunger 37 descends from the one-pressure cylinder chamber 36, the check valve≠0 is opened, and the pressure air of, for example, 4 kP is supplied from the supply pipe 3 to the upper chamber J6 by touching the supply path 3f.
The air inside the lower chamber JAb is reduced to, for example, 12 to 20 by the cooperation of the 4 o'clock pressure and the 10 to 9 operating pressure of the full stroke automatic switching 1liA of the present invention. The check valve 4 opened from the exhaust fi path 1I-7 after the pressure was increased.
4 ft-m and discharges into discharge line 44j.

Conversely, when the pressure increase plunger 37 rises in the pressure increase cylinder chamber 36, the check valves 1l-3f are opened, and the pressure increaser cylinder chamber 36 is opened.
Pressurized air is sucked into the lower chamber JAb from the supply passage≠l, and the pressure inside the upper chamber 36a, which has been compressed and increased by the same action, is discharged from the exhaust passage 4L≠ by opening the check valve≠6. Pipeline ≠ Discharges into the evening.

Thus, due to the double action of rising and falling of the pressure-increasing plunger 37, pressurized air that has been increased to a constant pressure without pulsation is continuously discharged from the discharge pipe 44S.

In this way, the automatic pressure boosting compressor B with a full stroke automatic switching device of the present invention has a double action mechanism that allows the suction pressure to act as operating energy for pressure boosting, and then widens the suction pressure by 100 inches to create a predetermined high pressure and discharge it. In addition, since the suction pressure supports the operating energy, the actual operating energy consumption is 20% or more than the simple energy calculation value, and excellent effects are achieved.

Although the embodiments of the present invention have been explained exclusively in the case of a vertical type, it goes without saying that the present invention can also be used as a horizontal type by lying down on its side. It can be applied to any other device as a scale or linear reciprocating drive engine.

Furthermore, although air is used as the pressure medium in the present invention,
Other fluids can also be used.

[Brief explanation of drawings]

FIG. 1 is a central vertical cross-sectional view of a conventional full stroke automatic switching device, and FIGS. 2 and 3 are central vertical cross-sectional views of the full stroke automatic switching device of the present invention. Fig. 3 shows the working piston in the bottom dead center state, and Fig. 4 shows the same in the top dead center state. be. A... Full stroke automatic switching device B... Pressure boosting automatic compressor with full stroke automatic switching device /... Operating cylinder 2... Operating 7 Linder plan 2a, j&a... Upper chamber, 2b, 36t8.
... Lower chamber 3 ... Operating piston ≠ ... Joint bottom end wall member B ... Bottomed switching valve case 6a ... Side wall 6b
...Toru bottom end 7...In the switching valve chamber...Air supply passage Ta...Exhaust passage IQ...Upper flow passage l/...Lower flow passage 13...Bottom flow passage 17...・Switching spool valve, /I...Whole body...Guide pipe 20・
...Middle switching slope 21...Lower switching slope 22...
Lower switching slope 23...Adjustment screw protrusion 2≠...Top wall member 27...Slide pipe, 27a...Reduced diameter valve seat 2g...Piston rod λri...Axis air passage λri806. Top 7. . C. 3010. Yu□Ae31
... Compression coil spring 32 ... Ball valve 33
...Switching ring path 3j...Compressor cylinder゛36...Pressure booster cylinder chamber

Claims (1)

[Scope of Claims] 1. An internal switching valve chamber is provided on the side wall of the switching valve case connected to the upper end of the operating cylinder into which the operating piston, which divides the internal operating cylinder chamber into an upper chamber and a partial chamber, is slidably fitted so as to be able to move up and down. an air supply passage and an exhaust passage that communicate with the switching valve chamber, and upper and lower flow passages that communicate the switching valve chamber with the lower chamber and the lower chamber, respectively, and a bottom flow passage that communicates with the switching valve chamber on the bottom wall. while moving the axis of the internal nitrogen barrel to accommodate the vertical tension of the guide pipe, and switching and communicating the upper flow mwr to the air supply passage at top dead center and to the exhaust passage at top dead center. With the first Kirikyou Saruji. - At the bottom dead center, a second switching path is established to advance the front d self-exhaust trace path to the bond body group, and the second switching path is connected to the front d self-exhaust flow path at the bottom dead center.
@r', glance tl1m att ← Mi at dead center
A switching spool valve having a third switching passage connected to each of the two passages on its outer circumferential surface is fitted in the switching valve chamber so as to be vertically slidable, and an axial vent communicating with the lower chamber. The upper end of the operating piston is inserted into the upper end opening of a slide pipe which passes through the passageway and whose lower end stands upright in the center of the operating piston and which passes through the bottom end wall of the switching valve case midway and is inserted into the guide pipe. A full stroke automatic switching device 2, which has a built-in check ball valve that opens when pressed by an adjusting screw protrusion screwed into the center of the top wall of the switching valve case at the point, and is further provided with a groove on the circumference. The 111 wall of the switching valve case connected to the upper end of the operating cylinder into which the operating piston, which is divided into an upper chamber and a lower chamber, is slidably fitted so that it can move up and down, has an air passage and an exhaust passage that communicate with the internal switching valve chamber. Both upper and lower flow passages are provided for switching and communicating the front i-pi switching valve chamber with the front BG upper chamber and lower chamber, respectively, and a bottom flow passage that communicates with the switching valve chamber is provided in the bottom end wall of the switching valve case. On the other hand, a first switching element loosely attaches the guide pipe through the axis of the inner window body, and communicates the upper flow passage with the air supply passage at the first dead center and with the discharge passage at the top dead center. a second switching slope that communicates the exhaust passage with the cavity at bottom dead center, and a second switching slope that communicates the lower flow passage with the cavity at bottom dead center and with the air supply passage at top dead center, respectively. A switching spool valve having a third switching ramp arranged on its outer circumferential surface is fitted into the switching valve chamber so as to be vertically slidable, and an axial ventilation passage communicating with the lower part is passed through the switching spool valve, and the lower end thereof is inserted into the switching valve chamber. The switching valve case stands upright in the center of the operating piston, and is inserted into the upper end opening of a slide pipe that is inserted into the kite pipe at port 11, with the lower end wall of the switching valve case in common on the way. A check ball valve, which is opened when pressed by an adjustment screw protrusion screwed into the center of the top wall of the valve, is disposed inside the valve, and furthermore, at the bottom dead center of the operating histone, a fourth switching valve is provided to communicate the lower chamber with the bottom flow path. In a complete stroke automatic switching device in which a slope is provided around the outer peripheral surface of the slide pipe, a compressor cylinder is connected to the bottom end wall of the working cylinder, and the upper end is fixed to the working piston, and the bottom end wall of the working cylinder is connected to the bottom end wall of the working cylinder. A pressure intensifier which divides an internal pressure booster cylinder chamber into an upper chamber and a lower chamber is commonly fixed to the lower end projecting into the compressor cylinder, while an upper chamber of the pressure booster cylinder chamber is fixed to the lower end wall of the working cylinder. A complete stroke automatic switching device which is a double action type by providing a supply passage and a discharge passage respectively communicating with the lower chamber of the pressure booster cylinder on the bottom end wall of the compressor cylinder. Automatic booster compressor