JP2012026427A - Structure of suction and discharge spool valve in which pair of yoke and cam of offset two-divided eccentric circular chord and flywheel are combined and rotated to perform vibration prevention against vibration generated at upper and lower conversion points of synchronized reciprocating stroke by pair of confronting and facing type linear motion plunger pumps in synchronization with piston rod reciprocating movement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize a piston reciprocating stroke with a forcible defined movement cam structure combining a yoke and a cam because a compression spring cannot perform reciprocating movement at a high-speed rotation in a defined movement cam structure in which the cam and the compression spring are combined for the reciprocating movement of a linear motion plunger.SOLUTION: In order to prevent the generation of vibration at top and bottom dead centers by the combination of a cam and a yoke converting rotation movement of a linear motion plunger pump into reciprocating movement, an eccentric circular arc cam and the yoke of a pair of facing plunger pumps are divided into two, a thrust washer is incorporated in a gap, and a pair type for synchronizing the movement of the offset plunger pumps is structured to reduce the vibration by the structure, and the reciprocating movement of the plunger pumps is stabilized.

Description

The present invention relates to a structure that eliminates vibration and noise caused by rotation of a yoke cam in an opposed-facing linear motion plunger pump.

Conventionally, the opposed linear motion plunger pump is a high-speed piston reciprocating motion, and the combination of the cam and compression spring causes positive cam motion, but high-speed motion causes problems such as material fatigue of the spring, which reduces the high-speed motion. It is remarkable.
Submitted by the patent applicant,
Japanese Patent No. 4189843 Patent No. 4354232 Japanese Patent Application No. 2009-1881137 is an existing technology.

In order to solve the above problems, linear motion is converted from positive cam reciprocating motion of a compression spring to reciprocating motion of forced positive cam by a cam and a yoke.

In order to solve the above problems, the present invention has a slightly OFFSET (eccentric) structure for a pair of opposed plunger pumps, and the eccentric circular cam and yoke are divided into two, and a thrust washer is incorporated in the separated contact surface. In combination with the effect of the flywheel, the plunger pump is reciprocated at high speed.

In the present invention, a positive cam by a combination of a cam and a spring is formed, and a forced positive cam is formed by a combination of a cam and a yoke, and two cam yokes that are synchronized by OFFSET (eccentricity), respectively, generate vibration noise. Eliminates high-speed motion, increasing the amount of compressed air generated.

FIG. 1 is a sectional view of a yoke cam driven linear motion plunger pump. A thrust washer 4 is assembled in the middle of combining two eccentric circular chord cams 2 and a yoke (frame) 3, and 4 is installed outside 2, and a spacer 5 4 and insert the bearing 6 into the bearing housing 7, screw the piston rod 15 and piston guide rod 15 ′ into 3, pass the piston rod holder 10 through 15 and 15 ′, and separately into the camshaft 1. 2 ・ 4 ・ 5 ・ 6 ・ Flywheel 9 is combined, 7 is mounted on the mount base holder 8, and the compression cylinder 20 is combined with the separately mounted cylinder mount base 12. , 20 is fixed. The piston 16 and the piston ring 17 are screwed into the top piston 18 and the spool valve 19 is screwed into the small assembly 15 and fixed to 15 with a double lock, and the opposite 20 is assembled with an OFFSET (eccentricity) OS.・ Fix the 12 small blocks to 8 and fix them to the mount base lock plate A 13 and the mount base lock plate B 14, then fix the exhaust cylinder 21 to 20, ・ Assemble the cylinder head 23, 20 ・ 21 The combined portion is a side sectional view of a plunger pump using a positive cam that seals a seal O-ring 22.

FIG. 2 is an exploded view of a yoke cam drive linear motion plunger pump OFFSET. An eccentric circular chord cam 2 fixed to the camshaft 1 is set, a yoke 3 is fitted, and 3 is an eccentric radius of 2 rotating around 1 The vertical and horizontal widths of 3 are set to be equal to 2, and the vertical reciprocating motion is set to 3 to execute the reciprocating stroke S by the eccentric amount of 2, respectively, the piston rod 15 and the yoke guide rod 15 ′. The piston 16 and the piston ring 17 to be assembled into 15 are screwed with the top piston 18 and fixed with the spool valve 19 and fitted into the compression cylinder 20 as a piston assembly unit. 20 is provided with three air intake ports IN on 20 sides of a square shape. Insert the exhaust cylinder 21 into the seal O-ring 22 and insert it into the 20. The square-shaped 21 is provided with a compressed air discharge port OUT at one side on the side 21, and the cylinder head 23 has 22 inside the 21 Insert and assemble to 21. 15 and 15 ', piston rod holder 10 has a structure in which S in 20 stabilizes 15 and 3, and 19 assembled to 15 reciprocates the bottom of 21 and sends compressed air to 21.

Fig. 3 shows the shape of the yoke. The horizontal and vertical widths of the yoke are different, and the horizontal width is larger than the rotation diameter of the eccentric circular chord cam. Rotation of the actuator works only in the longitudinal direction of the yoke and is involved in linear motion.

Figure 4 shows the eccentric circular chord cam diagram

FIG. 5 is a spool valve diagram showing a structure directly connected to a piston rod and repeating continuous intermittent air supply of compressed air by reciprocating motion.

The use effect of the present invention is not limited to the generation of air compression, but the use range is expanded to vacuum suction, refrigerant compression, etc. In addition, it is considered that each cylinder is made independent and the above use is used alone or in combination. . In particular, there is a remarkable power saving compared with the discharge amount of this pump.

Side view of a yoke cam drive linear motion plunger pump. Yoke cam drive linear motion plunger pump OFFSET exploded view. York diagram. Eccentric circular cam diagram. Spool valve diagram

IN: Air inlet OUT: Compressed air outlet OS: OFFSET (eccentric)
S: Stroke (piston stroke)
1: Camshaft 2: Eccentric circular cam 3: Yoke (frame)
4: Thrust plane washer 5: Spacer 6: Bearing 7: Bearing housing 8: Mount base holder 9: Flywheel 10: Piston rod holder 11: Cylinder lock spacer 12: Cylinder mount base 13: Mount base lock plate A
14: Mount base lock plate B
15: Piston rod 15 ': Piston guide rod 16: Piston 17: Piston ring 18: Top piston 19: Spool valve 20: Compression cylinder 21: Exhaust cylinder 22: Seal O-ring 23: Cylinder head

The present invention relates to a structure that eliminates vibration and noise caused by rotation of a yoke cam in an opposed-facing linear motion plunger pump.

Conventionally, the opposed linear motion plunger pump is a high-speed piston reciprocating motion, and the combination of the cam and compression spring causes positive cam motion, but high-speed motion causes problems such as material fatigue of the spring, which reduces the high-speed motion. It is remarkable.
Submitted by the patent applicant,
Japanese Patent No. 4189843 Patent No. 4354232 Japanese Patent Application No. 2009-1881137 is an existing technology.

In order to solve the above problems, the linear motion is converted from the positive cam reciprocating motion of the compression spring to the reciprocating motion of the forced positive cam by the combination of the cam and the yoke.

The present invention of the above problems solved, slightly to the plunger pump and a pair of opposed by the structure of OFFSET (eccentricity), divided 2 Henshin'en arc cam and the yoke, incorporate thrust washer contact surface separated, a pair In combination with the effect of the flywheel, the plunger pump is reciprocated at high speed.

In the present invention, a positive cam by a combination of a cam and a spring is formed, and a forced positive cam is formed by a combination of a cam and a yoke, and two cam yokes that are synchronized by OFFSET (eccentricity), respectively, generate vibration noise. Eliminates high-speed motion, increasing the amount of compressed air generated.

Figure 1 incorporates a thrust washer 4 to the intermediate combining Yokukamu drive linear motion plunger pump side cross-sectional view of two eccentric circular arcs cam 2 and the yoke (frame) 3, incorporated four outside of a spacer 5 4 and insert the bearing 6 into the bearing housing 7, screw the piston rod 15 and piston guide rod 15 ′ into 3, pass the piston rod holder 10 through 15 and 15 ′, and separately into the camshaft 1. 2 ・ 4 ・ 5 ・ 6 ・ Flywheel 9 is combined, 7 is mounted on the mount base holder 8, and the compression cylinder 20 is combined with the separately mounted cylinder mount base 12. , 20 is fixed. The piston 16 and the piston ring 17 are screwed into the top piston 18 and the spool valve 19 is screwed into the small assembly 15 and fixed to 15 with a double lock, and the opposite 20 is assembled with an OFFSET (eccentricity) OS.・ Fix 12 small blocks to 8 and fix them to the mount base lock plate A13 and mount base lock plate B14, then fix the exhaust cylinder 21 to 20, ・ Assemble the cylinder head 23, The combined portion is a side sectional view of a plunger pump using a positive cam that seals a seal O-ring 22.

Figure 2 sets the Henshin'en arc cam 2 fixed to Yokukamu drive linear motion plunger pump OFFSET exploded view camshaft 1 is fitted to the yoke 3, 3, from the second eccentric radius that rotates around a 1 The horizontal and vertical widths of 3 are set to be equal to 2, and the reciprocating motion of the upper and lower is set to 3 to execute the reciprocating stroke S by the eccentric amount of 2, respectively. The piston 16 and the piston ring 17 assembled into the screw 15 are screwed with the top piston 18 and fixed with the spool valve 1.9, and are fitted into the compression cylinder 20 as a piston assembly unit. 20 is provided with three air intake ports IN on 20 sides of a square shape. Insert the exhaust cylinder 21 into the seal O-ring 22 and insert it into the 20. The square-shaped 21 is provided with a compressed air discharge port OUT at one side on the side 21, and the cylinder head 23 has 22 inside the 21 Fit and assemble to 21. 15/15 ', piston rod holder 10 has a structure in which S in 20 stabilizes 15 and 3, and 19 assembled to 15 reciprocates the bottom of 21 and sends compressed air to 21.

3, width and height of the yoke Figure yoke, in different shapes, width takes greater width than the rotation diameter of Henshin'en arc cam, the horizontal width, combines Henshin'en arc cam yoke, the cam rotation However, it works only in the longitudinal direction of the yoke and is involved in linear motion.

4 Henshin'en arc cam diagram

Fig. 5 is a spool valve diagram that is directly connected to the piston rod and reciprocatingly moves compressed air continuously and intermittently.

The use effect of the present invention is not limited to the generation of air compression, but the use range is expanded to vacuum suction, refrigerant compression, etc. In addition, it is considered that each cylinder is made independent and the above use is used alone or in combination. . In particular, there is a remarkable power saving compared with the discharge amount of this pump.

Side view of yoke cam drive linear motion plunger pump Yoke cam drive linear motion plunger pump OFFSET exploded view York diagram Henshin'en arc cam view Spool valve diagram

IN: Air inlet OUT: Compressed air outlet OS: OFFSET (eccentric)
S: Stroke (piston stroke)
1: camshaft 2: Henshin'en arc cam 3: yoke (frame)
4: Thrust plane washer 5: Spacer 6: Bearing 7: Bearing housing 8: Mount base holder 9: Flywheel 10: Piston rod holder 11: Cylinder lock spacer 12: Cylinder mount base 13: Mount base lock plate A
14: Mount base lock plate B
15: Piston rod 15 ': Piston guide rod 16: Piston 17: Piston ring 18: Top piston 19: Spool valve 20: Compression cylinder 21: Exhaust cylinder 22: Seal O-ring 23: Cylinder head

Claims (2)

Forced positive cam structure that converts the cam rotation into linear motion with a combined yoke of an eccentric circular cam and yoke (frame) of the opposed linear motion plunger pump, the upper and lower conversion points of the opposing piston reciprocation In order to prevent the vibration generated in the cam, the eccentric chord cam and yoke are divided into two parts and a thrust washer is sandwiched between OFFSET (eccentricity). A structure that facilitates the reciprocating motion of the piston in the compression cylinder that is assembled with the flywheel on the shaft (rotating shaft). A spool valve structure in which the valve directly connected to the piston rod that reciprocates the switching of gas intake and exhaust by the forced cam drive of the opposed linear motion plunger pump is synchronized with the piston reciprocation, and the piston is also locked to the piston rod.

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