JP6802469B2 - Liquid discharge device - Google Patents

Description

According to the present invention, a pair of shaft bodies for generating a flip-flop phenomenon generate a spiral swirling flow that rotates clockwise and counterclockwise, and when grinding the surface of a workpiece such as a general steel material with a grinding device, This is a technology related to a liquid discharge device that supplies cooling water (coolant) as a grinding fluid to the grindstone or the grinding point. In particular, the liquid introduced into the pair of flip-flop phenomenon generating shafts rotates clockwise and counterclockwise, respectively. This is a technology related to the structure of the inlet housing that creates a swirling flow.

Conventionally, in order to wash away the grinding powder generated during grinding to prevent clogging of the grindstone and to maintain the grinding performance and cool the grindstone, the grinding device uses cooling water (coolant) as a grinding liquid to grind the grindstone or grind. It is necessary to supply to the place.
Further, conventionally, it is generally used that grinding of a work piece is performed on the circumferential surface of a rotating grindstone (see, for example, Patent Document 1 and Patent Document 2).

Then, when grinding the work piece is performed on the circumferential surface of the rotating grindstone described in Patent Documents 1 and 2, cooling from a liquid discharge device that generates fine bubbles in the cooling water is performed. The applicant of the present application has proposed an improved grinding performance by supplying water (see Patent Document 3).
In the liquid discharge device described in Patent Document 3, a pair of flip-flop phenomenon generating shafts generates a swirling flow that rotates in the opposite direction to the left and right, and the liquid discharge device merges on the discharge side to cancel the swirling direction. It is the one.

The liquid discharge device described in Patent Document 3 makes it possible to uniformly supply the cooling water to the ground surface of the grindstone in the workpiece by setting the cooling water to be supplied to the grindstone or the grinding point in a non-swivel state.

Japanese Unexamined Patent Publication No. 2008-22425 (see FIG. 1) Japanese Unexamined Patent Publication No. 9-94759 (see FIG. 1) Japanese Patent No. 6297627 (see FIG. 2, paragraph 0042).

When grinding the workpiece described in Patent Document 1, Patent Document 2, etc. is performed on the circumferential surface of a rotating grindstone, and the grinding performance is improved by using the liquid discharge device described in Patent Document 3. The liquid discharge device described in Patent Document 3 has a problem that the structure is complicated.
That is, the introduction-side communication portion of the introduction-side structure in the liquid discharge device described in Patent Document 3 evenly connects a pair of flip-flop phenomenon generation shafts through the introduction-side semi-arc-shaped circular tube with the cooling liquid from the introduction port portion. It is formed so as to lead to the body, and the structure that evenly divides the coolant is complicated.

Moreover, there is also a problem that a pair of spiral blade main bodies that generate a swirling flow in the coolant introduced into the pair of flip-flop phenomenon generation shafts is required.
In order to solve the problems of the conventional liquid discharge device, the present invention has an inlet housing structure in which the liquids introduced into the pair of flip-flop phenomenon generating shafts generate clockwise and counterclockwise swirling flows, respectively. The purpose is to make it.

The liquid discharge device of the present invention according to claim 1 is a liquid discharge device including a total housing formed of an inlet housing, a main housing, and an outlet housing, and a pair of shafts for generating a flip-flop phenomenon. And
A pair of columnar spaces are formed in the main housing, and the pair of flip-flop phenomenon generating shafts are built in.
The pair of flip-flop phenomenon generating shafts has a large number of parallel quadrilateral convex portions having a predetermined regularity so that a spiral swirling flow is generated in the liquid from the inlet side to the outlet side on the outer peripheral surface of each shaft portion. A large number of parallel quadrilateral convex portions are formed so that one of the spiral swirling flow rotates clockwise and the other rotates counterclockwise.
A large number of parallel quadrilateral convex portions formed on each of the flip-flop phenomenon generating shafts include a plurality of annular grooves formed at a predetermined pitch in the axial direction of the shaft portion and 15 degrees to 45 degrees on the outer peripheral surface of the shaft portion. It is formed by multiple spiral grooves formed at an angle of degree.
In the entrance housing, a pair of columnar entrance space portions communicating with each other in the pair of columnar spaces in the main housing are formed, and the pair of side walls in the vicinity of the partition wall of the pair of columnar entrance space portions. The liquid is injected tangentially into the columnar entrance space of the above, and the liquid inlet that communicates with the pair of entrance spaces is formed.
A pair of cylindrical or columnar support members are provided at the center of each inlet side end of the pair of flip-flop phenomenon generating shafts, and each of the support members is arranged in each of the inlet spaces and each of the above. The end portion of the support member is in contact with the inner wall surface of the end portion of the inlet housing.

In the liquid discharge device of the present invention according to claim 2, in addition to the configuration of the present invention according to claim 1, the outlet housing faces the center of the end portion of the partition wall separating the pair of columnar spaces in the main housing. A liquid discharge portion is formed on the wall portion, and a discharge space is formed in which the swirling flows in the opposite directions that communicate with each other in the pair of columnar spaces collide and mix with each other. is there.

In the liquid discharge device of the present invention according to claim 3, in addition to the configuration of the present invention according to claim 1 or 2, the main housing has a rectangular parallelepiped shape and is an inlet side of the pair of cylindrical spaces. The end face, the exit end face on the exit side, the first side surface and the second side surface facing each other across the pair of columnar spaces, the third side surface on the side of one columnar space, and the other circle. It is formed from the fourth side surface, which is the side of the columnar space.
The opening surface of the pair of columnar inlet spaces in the inlet housing is brought into close contact with the inlet end surface of the main housing, and the opening of the discharge space in the outlet housing is made on the outlet end surface of the main housing. Four through holes penetrating the inlet housing, the main housing, and the outlet housing are formed at the four corners in a state where the surfaces are in close contact with each other, and the total housing is formed by being connected by bolts and nuts. It is what has been done.

In the liquid discharge device of the present invention according to claim 4, in addition to the configuration of the present invention according to any one of claims 1 to 3, the outlet housing has an elongated hole-shaped opening in the discharge space. The radius of the outer peripheral edge of each outlet side end of the pair of flip-flop phenomenon generating shafts is formed to be larger than the slotted oblong hole radius, and each outlet side of the pair of flip-flop phenomenon generating shafts is formed. A part of the outer peripheral edge of the end abuts on a part of the edge of the opening of the outlet housing, so that the pair of flip-flop phenomenon generating shafts is fixed to the total housing. is there.

The liquid discharge device of the present invention according to claim 5 has the configuration of the present invention according to any one of claims 1 to 4, and the inlet housing is abbreviated as an inlet side of a partition wall partitioning the pair of inlet spaces. A communication portion that communicates with a pair of entrance space portions is formed in half.

The liquid discharge device of the present invention according to claim 6 has the configuration of the present invention according to any one of claims 1 to 5, and the inlet portion of the inlet housing is a columnar bulge that bulges from a rectangular parallelepiped side wall. It is formed by a female screw in the part.

The liquid discharge device of the present invention according to claim 7, in addition to the configuration of the present invention according to any one of claims 3 to 6, has an opening in an opening surface of a pair of columnar entrance spaces of the inlet housing. An O-ring is provided in the O-ring groove formed inside the four through holes on the outside, and the inside of the four through holes is on the outside of the opening on the opening surface of the discharge space of the outlet housing. An O-ring is provided in the O-ring groove formed in the above.

The liquid discharge device of the present invention according to claim 1 is a liquid discharge device including a total housing formed of an inlet housing, a main housing, and an outlet housing, and a pair of shafts for generating a flip-flop phenomenon. In the main housing, a pair of columnar spaces are formed and the pair of shafts for generating a flipflop phenomenon are built in, and the pair of shafts for generating a flipflop phenomenon are of the respective shafts. A large number of parallel quadrilateral protrusions are formed on the outer peripheral surface with a predetermined regularity so that a spiral swirling flow is generated in the liquid from the inlet side to the outlet side, and the spiral swirling flow is one side. A large number of parallel quadrilateral convex portions are formed so that is rotated clockwise and the other is rotated counterclockwise, and a large number of parallel quadrilateral convex portions formed on the shaft body for generating the flipflop phenomenon are shafts. It is formed by a plurality of annular grooves formed at a predetermined pitch in the axial direction of the portion and a plurality of spiral grooves formed at an angle of 15 to 45 degrees on the outer peripheral surface of the shaft portion. The body is formed with a pair of columnar entrance space portions communicating with each other in the pair of columnar spaces in the main housing, and the pair of columns on the side wall near the partition wall of the pair of columnar entrance space portions. A pair of liquid inlets are formed at the entrance space of the liquid in a tangential direction and communicates with the pair of inlet spaces, and a pair of liquid inlets are formed at the center of each inlet side end of the pair of flipflop phenomenon generating shafts. A cylindrical or columnar support member is provided, and each of the support members is arranged in each of the entrance spaces, and the end of each support member is in contact with the inner wall surface of the end of the entrance housing. The coolant introduced into the inlet housing can be evenly divided into two liquid streams and a swirling flow can be generated to guide the cooling liquid to a pair of flip-flop phenomenon generating shafts.
Moreover, the inlet housing can have a simple structure, and a good swirling flow can be generated while eliminating the swirling blade main body.
Further, a large number of parallel quadrilateral convex portions formed on the shaft body for generating each flip-flop phenomenon have a plurality of annular grooves formed at a predetermined pitch in the axial direction of the shaft portion and 15 degrees on the outer peripheral surface of the shaft portion. Since it is formed by a plurality of spiral grooves formed at an angle of about 45 degrees, it is possible to easily process each flip-flop phenomenon generating shaft body.

In the liquid discharge device of the present invention according to claim 2, in addition to the effect of the present invention according to claim 1, the outlet housing faces the center of the end portion of the partition wall separating the pair of columnar spaces in the main housing. Since a liquid discharge portion is formed on the wall portion to be formed, and a discharge space is formed in which the swirling flows in the opposite directions colliding with each other and being discharged from each of the columnar spaces are formed. With the outlet housing having a simple structure, it is possible to provide a non-swivel discharge flow in which the swirling directions are offset.

In the liquid discharge device of the present invention according to claim 3, in addition to the effect of the present invention according to claim 1 or 2, the main housing has a rectangular shape and is an inlet side of the pair of cylindrical spaces. The end face, the exit end face on the exit side, the first side surface and the second side surface facing each other across the pair of columnar spaces, the third side surface on the side of one columnar space, and the other circle. It is formed from a fourth side surface that is a side of the columnar space, and the opening surfaces of the pair of columnar entrance spaces in the entrance housing are brought into close contact with the entrance end surface of the main housing, and the main housing. Four through holes penetrating the inlet housing, the main housing, and the outlet housing are formed at the four corners in a state where the opening surface of the discharge space in the outlet housing is in close contact with the outlet end surface of the housing. Since the total housing is formed by being joined by bolts and nuts, it is possible to process each of the three housings to form a total housing that is securely integrated by bolts and nuts. is there.

The liquid discharge device of the present invention according to claim 4 has the effect of the present invention according to any one of claims 1 to 3, and the outlet housing has an elongated hole-shaped opening in the discharge space. The radius of the outer peripheral edge of each outlet side end of the pair of flip-flop phenomenon generating shafts is formed to be larger than the slotted slot radius, and each outlet side of the pair of flip-flop phenomenon generating shafts is formed. Since a part of the outer peripheral edge of the end abuts on a part of the edge of the opening of the outlet housing, the pair of flip-flop phenomenon generating shafts are fixed to the total housing . It is possible to easily and surely position the pair of flip-flop phenomenon-generating shafts with respect to the main housing.

The liquid discharge device of the present invention according to claim 5 has, in addition to the effect of the present invention according to any one of claims 1 to 4, the inlet housing is an abbreviation for the inlet side of a partition wall partitioning the pair of inlet spaces. Since a communication part that communicates with a pair of inlet spaces is formed in half, the processing of the inlet housing is easy, the flow resistance of the coolant in the inlet housing is small, and the swirling flow on the inner surface of the circumference Guidance can also be good.

The liquid discharge device of the present invention according to claim 6 has the effect of the present invention according to any one of claims 1 to 5, and the inlet portion of the inlet housing is a columnar bulge that bulges from a rectangular parallelepiped side wall. Since the portion is formed by a female screw, the inlet housing can be made smaller and lighter, and the connection port of the inlet pipe can be formed.

The liquid discharge device of the present invention according to claim 7, in addition to the effect of the present invention according to any one of claims 3 to 6, has an opening on the opening surface of the pair of columnar entrance spaces of the inlet housing. An O-ring is provided in the O-ring groove formed inside the four through holes on the outside, and the inside of the four through holes is on the outside of the opening on the opening surface of the discharge space of the outlet housing. Since the O-ring is provided in the O-ring groove formed in the above, it is possible to prevent the coolant from leaking with a simple structure.

It is a figure of the liquid discharge device which concerns on embodiment of this invention, (a) is a plan view and (b) is a front view. It is a partially omitted exploded plan view of FIG. 1A. It is a partial cross-sectional view of line AA of FIG. 1 (b). It is a figure of the inlet housing in the liquid discharge device which concerns on embodiment of this invention, (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a right side view. .. 4 is a cross-sectional view taken along the line BB of FIG. 4A. It is a perspective view of FIG. 4D. The main housing of the liquid discharge device according to the embodiment of the present invention, (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a right side view. .. A view of the outlet housing in the liquid discharge device according to the embodiment of the present invention, (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a right side view. .. (A) is a sectional view taken along line CC of FIG. 8 (a), and FIG. 8 (b) is a sectional view taken along line DD of FIG. 8 (c). It is a perspective view of FIG. 8C. In the explanatory view of one of the shafts for generating the flip-flop phenomenon in the liquid discharge device according to the embodiment of the present invention, (a) is a partial cross-sectional view, (b) is a DD line end view of (a) and (C) is an end view taken along the line E.

Hereinafter, the embodiments of the present invention will be described in detail with reference to FIGS. 1 to 11 attached.
1 to 3 are views showing a liquid discharge device according to an embodiment of the present invention, FIGS. 4 to 6 are views of an inlet housing, FIG. 7 is a view of a main housing, and FIGS. 8 to 10 are outlet housings. And FIG. 11 are diagrams of a shaft body for generating a flip-flop phenomenon.

In FIGS. 1 to 3, reference numeral 1 denotes a liquid discharge device, which is a housing 11 formed of an inlet housing 2, a main housing 3, and an outlet housing 4, and a pair of flip-flop phenomenon generating shaft bodies 5a. It is equipped with 5b.
The total housing 11 formed of the inlet housing 2, the main housing 3, and the outlet housing 4 is all surface-treated with alumite on an aluminum alloy, and four through holes 12 are formed at the four corners. It is assembled with a hexagon socket head cap screw (cap bolt, not shown) and a nut (not shown).

As shown in FIG. 7, the main housing 3 has a rectangular parallelepiped shape with a width of 67.5 mm, a depth of 87 mm, and a height of 49 mm, and a pair of columnar spaces 31 are formed to generate a pair of flip-flop phenomena. The shaft bodies 5a and 5b are built in.
The main housing 3 has an inlet end surface 32 that is the entrance side of the pair of columnar spaces 31, an outlet end surface 33 that is the exit side, and a first side surface 34 that faces each other with the pair of columnar spaces 31 interposed therebetween. a second side surface 35, are formed from one and the third side surface 36 of the side of the cylindrical space 31, the fourth side face 37. which is a side of the other of the cylindrical space 31.

Each columnar space 31 of the main housing 3 is formed in a tapered shape having an inlet end having a diameter of 35 mm and an outlet end having a diameter of 32 mm.
Further, as shown in FIGS. 4 to 6, the entrance housing 2 has a pair of diameters of 35 mm, which is the same as the diameter of the entrance end of the columnar spaces 31 communicating with the pair of columnar spaces 31 in the main housing 3. The columnar entrance space 21 is formed.

Liquid is injected tangentially into the pair of columnar entrance space 21 and communicates with the pair of entrance space 21 into the side wall 23 near the partition 22 of the pair of columnar entrance space 21 in the entrance housing 2. The inlet portion 24 of the liquid to be used is formed.
In the entrance housing 2, a communication portion 25 for communicating the pair of entrance space portions 21 is formed on substantially half of the partition wall 22 that partitions the pair of entrance space portions 21 on the entrance side.

The inlet portion 24 of the inlet housing 2 is formed by a female screw 27 on a columnar bulging portion 26 that bulges from a rectangular parallelepiped side wall 23.
The entrance housing 2 has a width of 35 mm, a height of the columnar bulge 26 of 15 mm, the columnar bulge 26 has a square top surface, and the opposite side surfaces are formed of a trapezoid and a rectangle. Is a taper screw for 3/4 pipe.

The opening surface 28 of the pair of columnar entrance space 21 in the entrance housing 2 is brought into close contact with the entrance end surface 32 of the main housing 3, and the four through holes 12 are formed outside the opening 28a in the opening surface 28. An O-ring 28b is provided in an O-ring groove (not shown) formed inward.
As shown in FIGS. 2 and 3, the pair of flip-flop phenomenon generating shafts 5a and 5b generate a spiral swirling flow in the liquid from the inlet side 52 to the outlet side 53 on the outer peripheral surface of each shaft portion 51. As such, a large number of parallel quadrilateral convex portions 54 are formed with a predetermined regularity.

The spiral swirling flow in the pair of flip-flop phenomenon generating shafts 5 (5a, 5b) has a large number of parallel four sides so that one rotates counterclockwise and the other rotates clockwise (clockwise). The shape convex portion 54 is formed.
Specifically, each flip-flop phenomenon generating shaft body 5 is formed so that the outer diameter of the inlet side 52 of each shaft portion 51 is 35 mm, the outer diameter of the outlet side 53 is 32 mm, and the length is 67.5 mm. ..

A large number of parallel quadrilateral convex portions 54 have 13 annular grooves 56 formed at a predetermined pitch in the axial direction of each shaft portion 51 and a predetermined angle (30 degrees with respect to the axial direction) on the outer peripheral surface of the shaft portion 51. It is a parallel quadrilateral convex portion formed by the eleven spiral grooves 57 formed by the above.
Then, one of the flip-flop phenomenon generating shaft bodies 5a is formed in a direction in which the spiral groove 57 makes the swirling flow counterclockwise, and the other flip-flop phenomenon generating shaft body 5b has the spiral groove 57 swirling flow. It is formed in the direction of clockwise rotation.

Further, each flip-flop phenomenon generating shaft body 5 shows one flip-flop phenomenon generating shaft body 5a in FIG. 11, and the other flip-flop phenomenon generating shaft body 5b is not shown, but is spiral. The only difference is that the groove 57 has a left-handed spiral flow on the one hand and a right-handed spiral flow on the other side. Hereinafter, one of the flip-flop phenomenon generating shafts 5a will be described.
The shaft body 5 (5a, 5b) for generating the flip-flop phenomenon has a columnar cavity 58 formed from the inlet side 52, and a small diameter step portion of a cylindrical support member 6 made of synthetic resin is formed in the columnar cavity 58. 61 is provided by press fitting.

As shown in FIG. 3 , each support member 6 is arranged in each entrance space 21 of the entrance housing 2, and each end 62 is brought into contact with the end inner wall surface 29 of the entrance housing 2, and each flip-flop is dropped. The shaft body 5 for generating the flip-flop phenomenon is fixed and used as a guide for the swirling flow of the coolant.
Next, as shown in FIGS. 8 to 10, the outlet housing 4 has a width of 40 mm, and the wall portion 41 facing the end center 39 of the partition wall 38 separating the pair of columnar spaces 31 in the main housing 3 A liquid discharge portion 42 is formed therein.

Then, the outlet housing 4 communicates with the pair of columnar spaces 31 of the main housing 3, and the swirling flow in the opposite direction of the pair of flip-flop phenomenon generating shafts 5 discharged from the columnar spaces 31 collides with each other. A discharge space 43 for mixing is formed.
Specifically, in the outlet housing 4, the opening 44a of the opening surface 44 of the discharge space 43 has an elongated hole shape with a radius of 15 mm, and the outer peripheral edge of the outlet side end portion of the pair of flip-flop phenomenon generating shaft bodies 5. The radius of 55 is 16 mm, which is larger than the elongated hole radius of 15 mm.

Therefore, a part of the outer peripheral edge 55 of each outlet side end portion of the pair of flip-flop phenomenon generating shafts 5 comes into contact with a part of the edge portion 44b of the opening 44a of the outlet housing 4, thereby causing the pair of flip-flops. The shaft body 5 for generating the flip-flop phenomenon is fixed to the total housing 11.
Further, the discharge space 43 of the outlet housing 4 is discharged from each columnar space 31 of the main housing 3 by forming a mortar-shaped recess on the discharge portion 42 side from each of the elongated hole-shaped semicircular portions 44c. The swirling flows in the opposite directions of the pair of flip-flop phenomenon generating shafts 5 are made to collide and mix.

A discharge portion 42 is formed by a female screw 45 having a taper for 3/4 pipe in the central portion of the outlet housing 4 on the outlet side of the discharge space 43.
The opening surface 44 of the discharge space 43 in the outlet housing 4 is in close contact with the outlet end surface 33 of the main housing 3, and is formed outside the opening 44a in the opening surface 44 and inside the four through holes 12. An O-ring 44d is provided in an O-ring groove (not shown).

Next, the operation and function of the embodiment of the present invention configured as described above will be described.
The entrance housing 2 is formed with a pair of columnar entrance space portions 21 communicating with each other of the pair of columnar spaces 31 in the main housing 3, and side walls in the vicinity of the partition wall 22 of the pair of columnar entrance space portions 21. In 23, the cooling liquid introduced into the inlet housing 2 that injects the liquid tangentially into the pair of columnar inlet spaces 21 is evenly divided into two liquid streams and a swirling flow is generated to generate a pair of liquid streams. It is guided to the shaft body 5 for generating the flip-flop phenomenon, and the inlet housing 2 has a simple structure so as to generate a good swirling flow while eliminating the swirling blade main body.

Further, the outlet housing 4 has a simple structure in which a discharge space 43 is formed in which the swirling flows in the opposite directions colliding with each other are communicated with each other in the pair of columnar spaces 31 and discharged from each columnar space 31. 3 provides a non-swirl discharge flow in which the swivel directions are offset.
The total housing 11 formed of the inlet housing 2, the main housing 3, and the outlet housing 4 is processed so that each of the three housings is surely integrated by bolts and nuts.

The pair of flip-flop phenomenon generating shafts 5 bring a part of the outer peripheral edge of each outlet side end portion into contact with a part of the edge portion 44b of the opening 44a of the outlet housing 4 to the main housing 3. I try to make positioning easy and reliable.
In the entrance housing 2, a communication portion 26 for communicating the pair of entrance space portions 21 is formed in substantially half of the inlet side of the partition wall 22 that partitions the pair of entrance space portions 21, and the entrance housing 2 can be easily processed. The flow resistance of the coolant in the inlet housing 2 is small, and the guidance of the swirling flow on the inner surface of the circumference is also improved.

Further, since the inlet portion 24 of the inlet housing 2 is formed by a female screw 27 on a columnar bulging portion 27 that bulges from a rectangular parallelepiped side wall, the inlet housing 2 is made smaller and lighter so as to be smaller and lighter. It is designed to form a connection port.
4 each outside the opening 28a in the opening surface 29 of the pair of columnar entrance space 21 of the entrance housing 2 and outside the opening 44a in the opening surface 44 of the discharge space 43 of the outlet housing 4. O-rings 29b and 44b are provided in the O-ring grooves formed inside the two through holes 12 to prevent leakage of the coolant with a simple structure.

Further, a large number of parallel quadrilateral convex portions 54 formed on the shaft body 5 for generating the flip-flop phenomenon are formed by 13 annular grooves 56 formed at a predetermined pitch in the axial direction of the shaft portion 51 and the shaft portion 51. It is a parallel quadrilateral convex portion formed by 11 spiral grooves 57 formed at a predetermined angle on the outer peripheral surface, so that each flip-flop phenomenon generating shaft body 5 can be easily processed.
Next, a modified example of the above embodiment of the present invention will be described.

In the above embodiment, the shaft body 5 for generating the flip-flop phenomenon is fixed to the total housing 11 by the cylindrical support member 6 made of synthetic resin, but other materials such as metal may also be used. It may be cylindrical.
Further, in the above embodiment, the swirling flow is offset by the discharge space 43 in which the swirling flow in the opposite direction discharged from the columnar space 31 of the main housing 3 collides with and mixes with the outlet housing 4. However, a member for collision mixing may be provided inside the outlet housing 4.

In the above embodiment, the main housing 3 is formed in a rectangular parallelepiped shape, but the cross-sectional shape may be an elongated hole shape or an oval shape so as to surround the pair of columnar spaces 31, and is assembled to the main housing 3. Similarly, the cross-sectional shapes of the inlet housing 2 and the outlet housing 4 may be elongated or oval.
Further, in the above embodiment, although the total housing 11 is made of an aluminum alloy, stainless steel or engineering plastic may be used, and the shaft body 5 for generating the flipflop phenomenon is made of a copper alloy, but other metal materials or engineering It may be made of plastic.

In the above embodiment, the inlet housing 2, the main housing 3, and the outlet housing 4 are assembled with four bolts and nuts, but the inlet housing 2 and the main housing 3 are assembled with the main housing 3 and the outlet. Bolts and nuts may be formed in the housing 4 and female screw holes may be formed in the main housing 3 and assembled with bolts.
Further, in the above embodiment, the inlet portion 24 of the inlet housing 2 is formed in a direction orthogonal to the axis of the shaft body 5 for generating the flip-flop phenomenon, but is inclined by about 15 to 45 degrees toward the exit side of the axis. You may let me.

In the above embodiment, the inlet housing 2 and the outlet housing 4 are provided with leak-proof O-rings 28b and 44b, but the main housing 3 may be provided with O-rings.
In the above embodiment, the axial angle of the spiral groove 57 of the flip-flop phenomenon generating shaft body 5 is set to 30 degrees, but it may be set to 15 degrees to 45 degrees.

Further, in the above embodiment, the columnar cavity portion 58 is formed in the shaft body 5 for generating the flip-flop phenomenon to reduce the weight, but the cavity portion may not be provided.
In the above embodiment, the shaft body 5 for generating the flip-flop phenomenon is tapered from the inlet side 52 to the outlet side 53, but it may be straight, and the outer surface of the main housing 3 is tapered. No, but it may be tapered.

In the above embodiment, the pair of flip-flop phenomenon generating shafts 5 contact a part of the outer peripheral edge 55 of each outlet side end portion with a part of the edge portion 44b of the opening 44a of the outlet housing 4. However, a contact portion may be formed on the outlet side of the main housing 3 instead of the outlet housing 4.

1 Liquid discharge device 11 Total housing 12 Through hole 2 Entrance housing 21 Cylindrical entrance space 22 Partition 23 Side wall 24 Entrance 25 Communication 26 Columnar bulge 27 Female screw 28 Opening surface 28a Opening 28b O-ring 29 End Inner wall surface 3 Main housing 31 Cylindrical space 32 Entrance end face 33 Exit end face 34 First side surface 35 Second side surface 36 Third side surface 37 Fourth side surface 38 Partition 39 End part center 4 Exit housing 41 Wall part 42 Discharge part 43 Discharge Space 44 Opening surface 44a Opening 44b Edge 44c Semi-circular 44d O-ring 45 Female screw 5 Flip-flop phenomenon generating shaft 5a One flip-flop phenomenon generating shaft 5b The other flip-flop phenomenon generating shaft 51 Shaft 52 Entrance side 53 Exit side 54 Parallel quadrilateral convex portion 55 Outer peripheral edge of outlet side end 56 Circular groove 57 Spiral groove 58 Cylindrical cavity 6 Support member 61 Small diameter step 62 End of support member

Claims (7)

A liquid discharge device including a total housing formed of an inlet housing, a main housing, and an outlet housing, and a pair of flip-flop phenomenon generating shafts.
A pair of columnar spaces are formed in the main housing, and the pair of flip-flop phenomenon generating shafts are built in.
The pair of flip-flop phenomenon generating shafts has a large number of parallel quadrilateral convex portions having a predetermined regularity so that a spiral swirling flow is generated in the liquid from the inlet side to the outlet side on the outer peripheral surface of each shaft portion. A large number of parallel quadrilateral convex portions are formed so that one of the spiral swirling flow rotates clockwise and the other rotates counterclockwise.
A large number of parallel quadrilateral convex portions formed on each of the flip-flop phenomenon generating shafts include a plurality of annular grooves formed at a predetermined pitch in the axial direction of the shaft portion and 15 degrees to 45 degrees on the outer peripheral surface of the shaft portion. It is formed by multiple spiral grooves formed at an angle of degree.
In the entrance housing, a pair of columnar entrance space portions communicating with each other in the pair of columnar spaces in the main housing are formed, and the pair of side walls in the vicinity of the partition wall of the pair of columnar entrance space portions. The liquid is injected tangentially into the columnar entrance space of the above, and the liquid inlet that communicates with the pair of entrance spaces is formed.
A pair of cylindrical or columnar support members are provided at the center of each inlet side end of the pair of flip-flop phenomenon generating shafts, and each of the support members is arranged in each of the inlet spaces and each of the above. A liquid discharge device characterized in that the end portion of the support member is in contact with the inner wall surface of the end portion of the inlet housing. In the outlet housing, a liquid discharge portion is formed on a wall portion facing the center of the end portion of the partition wall separating the pair of columnar spaces in the main housing, and each of the outlet housings communicates with the pair of columnar spaces. The liquid discharge device according to claim 1, wherein a discharge space is formed in which swirling flows in the opposite directions discharged from the columnar space collide and mix. The main housing has a rectangular parallelepiped shape, and has an inlet end face that is an inlet side of the pair of columnar spaces, an outlet end face that is an outlet side, and a first side surface that faces each other across the pair of columnar spaces. a second side surface, is formed from a third side which is a side of one of the cylindrical space, and a fourth side surface which is a side of the other cylindrical space,
The opening surface of the pair of columnar inlet spaces in the inlet housing is brought into close contact with the inlet end surface of the main housing, and the opening of the discharge space in the outlet housing is made on the outlet end surface of the main housing. Four through holes penetrating the inlet housing, the main housing, and the outlet housing are formed at the four corners in a state where the surfaces are in close contact with each other, and the total housing is formed by being connected by bolts and nuts. The liquid discharge device according to claim 1 or 2, wherein the liquid discharge device is characterized by the above. In the outlet housing, the opening of the discharge space has an elongated hole shape, and the radius of the outer peripheral edge of each outlet side end portion of the pair of flip-flop phenomenon generating shafts is larger than the elongated hole-shaped elongated hole radius. Is also formed large, and a part of the outer peripheral edge of each outlet side end portion of the pair of flip-flop phenomenon generating shafts comes into contact with a part of the edge portion of the opening of the outlet housing. The liquid discharge device according to any one of claims 1 to 3, wherein a shaft body for generating a flip-flop phenomenon is fixed to the entire housing . Any one of claims 1 to 4, wherein the entrance housing is formed with a communication portion that communicates with the pair of entrance space portions on substantially half of the inlet side of the partition wall that partitions the pair of entrance space portions. The liquid discharge device according to. The liquid discharge device according to any one of claims 1 to 5, wherein the inlet portion of the inlet housing is formed by a female screw in a columnar bulging portion that bulges from a rectangular parallelepiped side wall. An O-ring is provided in an O-ring groove formed inside the four through holes on the outside of the opening on the opening surface of the pair of columnar entrance spaces of the entrance housing, and the outlet housing is provided with an O-ring. The invention according to any one of claims 3 to 6, wherein an O-ring is provided in an O-ring groove formed inside the four through holes on the outside of the opening on the opening surface of the discharge space. Liquid discharge device.