JPH0548093Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a device that supplies or injects a predetermined amount of a different type of fluid from a sub-path at a constant ratio to a main fluid flowing through a main path, and the main fluid flows through a rotor. The present invention relates to a rotation transmission device that extracts rotation through a speed reduction mechanism and transmits it to a pump that supplies a different type of fluid.

[Conventional technology]

An example of such a device currently in use is the one shown in FIG. This takes out the rotation of the rotor 113 rotated by the fluid,
This is transmitted to the roller housing 151 of the tube pump 150 via the reduction gear mechanism 130. Specifically, the final driven gear 133 of the reduction gear mechanism 130 that decelerates and transmits the rotation from the rotor 113 has first and second gears parallel to the final driven gear 133 and at both ends thereof.
Intermediate shaft 1 to which intermediate gears 142a and 142b are fixed
34 is rotatably supported on a bearing member 122, and a driven gear 143 fixed to one end of a driven shaft 144 rotatably supported on a cover case 140 is meshed with this first intermediate gear 142a, and the other end of the driven shaft 144 is engaged with the first intermediate gear 142a. The gear portion 152 of the roller housing 151 is engaged with the transmission gear 145 fixed to the roller housing 151 to rotate the roller housing 151.
One roller 153 sequentially presses the supply tube 155 to supply different fluids in the tube.

[The problem that the idea aims to solve]

In this way, the tube pump that supplies the different fluid and the reduction gear mechanism that transmits rotation to it are integrated, so when changing the supply ratio of the different fluid to the main fluid, the entire proportional injector must be replaced with a new one. The cost had become expensive. In addition, since the first intermediate gear fixed to the intermediate shaft and the driven gear fixed to the driven shaft are fixed with setscrews, when low-speed high torque is applied to these parts, the first intermediate gear fixed to the intermediate shaft and the driven gear It has a number of problems, such as slipping on the shaft, causing wear, rotation not being transmitted accurately, and short life.

The present invention has been devised for the purpose of solving the above-mentioned problems, making it possible to change the supply ratio of different fluids relatively easily and at low cost, and ensuring rotation transmission.

[Means for solving problems]

In order to achieve this object, the present invention extracts the rotation from the rotor 14 which rotates due to the passage of the main fluid through the reduction gear mechanism 30, and uses a roller housing 51 having a plurality of rotatably provided rollers 53 to transfer this rotation. In a proportional injector having a tube pump 50 that supplies different fluids by sequentially pressing supply tubes 55 disposed around the supply tubes 55 with the roller 53, an intermediate shaft rotates via the reduction gear mechanism 30. A guide member 35 is inserted into the end of the intermediate gear 34 so as to intersect with the axis, and a support shaft 41 that supports a rotatable intermediate gear 42 is disposed on an extension of the same center line of the intermediate shaft 34. A wall 4 is provided at a portion where both ends of the guide member 35 face each other.
2b, and further has a transmission gear 45 on this intermediate gear 42 that meshes with the gear portion 52 of the roller housing 51.
A driven gear 43 fixed to the roller housing 51 is meshed with the driven gear 43 to transmit rotation from the reduction gear mechanism 30 to the roller housing 51.

[Effect]

When the rotor 14 rotates under the action of the main fluid,
This rotation is transmitted to the intermediate shaft 34 via the reduction gear mechanism 30.
transmitted to. When the intermediate shaft 34 rotates, since the guide member 35 is fitted into the intermediate gear 42, the intermediate gear 42 rotates together, and this rotation is transferred from the driven gear 43 to the roller housing 51.
is transmitted to the gear portion 52 of the roller housing 5.
1 rotates. Even if the guide member 35 tries to come off from the intermediate shaft 34 during this rotation, the end of the guide member 35 is locked by the wall 42b, so it will not come off, so the roller 53 sequentially presses the supply tube 55. The dissimilar fluid is supplied. On the other hand, when changing the supply ratio of this different type of fluid, remove the clamp fittings 24 that fix the reducer case 20 and the cover case 40, and remove the cover case 40 to separate the intermediate gear 42 and the guide member 35. The mating will come off. Then, simply by fixing the cover case 40, which has the intermediate gear 42 and the driven gear 43 whose gear ratios have been changed, to the reducer case 20 with the clamp fittings 24 on both sides, the supply ratio of the different type of fluid to the main fluid can be changed.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. In FIGS. 1 and 2, 10 is a rotor case, and a central shaft 11 is implanted in the center of this rotor case 10.
A rotary member 12 is rotatably supported by the rotary member 1 . Guide groove 12 formed in this rotating member 12
A rotor shaft 15 that is inserted through the center of a rotor 14 that swings and rotates in a rotor chamber 13 of a rotor case 10 is fitted into a.

On the other hand, a main shaft constituting a reduction gear mechanism 30 rotatably supported by a reduction gear case 20 fixed to a main body case 16 containing the rotor case 10 is attached to a protruding end of a rotor shaft 15 inserted through the rotor 14. The engagement groove 21a of the transmission member 21 fixed to one end of the transmission member 31 is engaged with the engagement groove 21a. This main shaft 31 is rotatably supported by a lower bearing member 23, and a main drive gear 32 fixed to the other end of this main shaft 31 is connected to the main shaft 31 through a reduction gear mechanism 30 consisting of a plurality of large and small gear groups. It meshes with the driven gear 33. This final driven gear 33 is fixed to one end of an intermediate shaft 34 rotatably supported by an upper bearing member 22 attached to the reducer case 20, and the other end of this intermediate shaft 34 is fixed to the upper bearing member 22 attached to the reduction gear case 20. A guide member 35 is inserted and fixed across the center line of the guide member 35 .

On the other hand, as shown in FIGS. 3 and 4, on the same center line extension of the intermediate shaft 34, the support shaft 41 is attached to the cover case 40 fixed to the reducer case 20 by the clamp fittings 24 on both sides. An intermediate gear 42 is rotatably supported on this support shaft 41. This intermediate gear 42 has a positive-shaped fitting groove 42a into which the guide member 35 is fitted, and walls 42b are formed at the portions facing the ends of the guide member 35, respectively.
This fitting groove 42a may have a uniform shape. As shown in FIG. 1, a guide member 35 is fitted between the walls 42b.
A driven gear 43 meshes with the intermediate gear 42, and the driven gear 43 is fixed to a driven shaft 44 rotatably supported by the cover case 40 parallel to the support shaft 41. A transmission gear 45 is fixed to the other end of the driven shaft 44 and meshes with a gear portion 52 formed on the outer periphery of a roller housing 51 rotatably supported by the cover case 40.
This causes the roller housing 51 to rotate.

Further, four rollers 53 are rotatably supported on the outer periphery of the roller housing 51 at equal intervals in the circumferential direction, and a cam block attached to the roller housing 51 and the reduction gear case 20 A tube pump 50 is constructed by disposing a supply tube 55 having a large elastic restoring force for sucking a different type of fluid different from the main fluid and flowing it out from its tip.

Next, the operation of this embodiment will be explained. When the main fluid is supplied to the rotor case 10, this fluid acts on the rotor 14, and the rotor 14 swings and rotates around the central axis 11, as shown in FIGS. This gives rotation to the transmission member 21.
In this way, when the rotor 14 oscillates and rotates according to the flow rate, this rotation is transmitted from the main drive gear 32 through the reduction gear mechanism 30 to the final driven gear 33 at a reduced speed, as shown in FIG. Then, due to the fitting action between the guide member 35 and the fitting groove 42a, the rotation is transmitted to the transmission gear 45 via the driven gear 43, and the roller housing 51 of the tube pump 50 is rotated in a predetermined direction. For this reason, the supply tube 55 is sequentially pressed by the rollers 53, so that the different fluids are supplied forward at a constant ratio. Furthermore, even if the guide member 35 tries to come off from the intermediate shaft 34 during this rotation, it is prevented by the wall 42b of the fitting groove 42a, so it does not come off and the rotation is reliably transmitted.

On the other hand, when changing the supply ratio of this different type of fluid, the two clamp fittings 24 that fix the reducer case 20 and the cover case 40 are removed, and the intermediate gear 42 is fitted by removing the cover case 40. The groove 42a and the guide member 35 are disengaged from each other.
Then, simply by fixing the cover case 40, which has the intermediate gear 42 and the driven gear 43 whose gear ratios have been changed, and the tube pump 50, to the reducer case 20 with the clamp fittings 24, the supply ratio of the different type of fluid to the main fluid can be changed. Ru.

[Effect of idea]

As is clear from the embodiments described above, the present invention has an intermediate shaft 3 which receives rotation from a reduction gear mechanism 30.
4 and the intermediate gear 42 are connected by the fitting between the guide member 35 and the fitting groove 42a, and this fitting groove has a wall 42b formed at the end, so that it is not connected to the main flow as in the conventional case. When changing the supply ratio of different fluids, there is no need to change the entire machine to a new one, and it can be done by simply changing the unit including the tube pump attached to the cover case, reducing the cost of replacement. This also makes maintenance and inspection easier. In addition, at locations where low-speed, high-torque is applied, rotation is transmitted through the engagement between the guide member and the engagement groove.
There is no slippage between the components, accurate rotation is always transmitted, and the service life is long. Furthermore, since walls are formed opposite the ends of the guide member that fit into the fitting groove, the guide member will never come off from the intermediate shaft during rotation, and rotation transmission will not be interrupted. You can obtain unique effects such as:

[Brief explanation of the drawing]

Fig. 1 is an enlarged sectional view of the main part of the present invention, Fig. 2 is a sectional side view of the main part showing an embodiment of the invention, Fig. 3 is a perspective view showing the state in which the reducer case and the cover are separated. Figure 4 is a side view showing the overall appearance, Figure 5 A,
B and C are sectional plan views showing the operation of the rotor, and FIG. 6 is a sectional view of essential parts showing a conventional example. 10 is a rotor case, 11 is a central shaft, 12 is a rotating member, 12a is a guide groove, 13 is a rotor chamber, 1
4 is a rotor, 15 is a rotor shaft, 16 is a main body case, 20 is a reducer case, 21 is a transmission member, 21
a is an engagement groove, 22 and 23 are bearing members, 24 is a clamp fitting, 30 is a reduction gear mechanism, 31 is a main shaft, 3
2 is a main drive gear, 33 is a final driven gear, 34 is an intermediate shaft, 35 is a guide member, 40 is a cover case, 4
1 is a support shaft, 42 is an intermediate gear, 42a is a fitting groove,
42b is a wall, 43 is a driven gear, 44 is a driven shaft, 4
5 is a transmission gear, 50 is a tube pump, 51 is a roller housing, 52 is a gear portion, 53 is a roller,
54 is a cam block, and 55 is a supply tube.

Claims (1)

[Claims for Utility Model Registration] Rotation from the rotor 14 rotated by passage of the main fluid is taken out via the reduction gear mechanism 30, and this rotation is transmitted to the roller housing 51 having a plurality of rotatably provided rollers 53. The tube pump 5 sequentially presses the supply tubes 55 arranged around this with the roller 53 to supply a different type of fluid.
0, a guide member 35 is inserted through the end of the intermediate shaft 34 that rotates via the reduction gear mechanism 30, intersecting the axis, and rotates on an extension of the same center line of the intermediate shaft 34. A fitting groove 4 in which a support shaft 41 for supporting a freely movable intermediate gear 42 is disposed, and walls 42b are provided at portions of the intermediate gear 42 where both ends of the guide member 35 face each other.
2a, and a driven gear 43 fixed to a driven shaft 44 having a transmission gear 45 that meshes with the gear portion 52 of the roller housing 51 is meshed with the intermediate gear 42. .