JPH0726366Y2 - Gear pump for compound spinning - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a composite spinning gear for pressure-feeding a plurality of fluids having different properties, in particular, a spinning dope having different properties used in a composite fiber production process, to a nozzle at a predetermined ratio. Regarding pumps.

[Conventional technology]

As a composite gear pump of this type, for example, a composite spinning pump (Japanese Utility Model Publication No. 44-22486) as shown in FIGS. 5 and 6 is known. In this pump, two gears 53, 54 are axially mounted on a drive shaft 52 rotatably supported by pump plates 51, 51 at predetermined intervals, and a gear 5 meshed with these gears 53, 54.
5,56 are rotatably attached to the support shaft 57 fixed to the pump plates 51,51, and when the drive shaft 52 is driven by the prime mover side output shaft 58, the gear pair 59 of the gears 53,55 and the gears of the gears 54,56. The pair 60 rotates together, the gear pair 59 discharges the fluid sucked from the suction port 61 to the discharge port 62, and the gear pair 60 discharges the fluid sucked from the suction port 63 to the discharge port 64. The gear pump can pump two kinds of fluids at the same time without mixing them.

[Problems to be solved by the device]

By the way, in this composite pump, the discharge amount of both fluids is
This can be changed by changing the rotation speed of 52, but the discharge amount ratio of both fluids cannot be changed. Therefore, in order to change the discharge amount ratio, it is necessary to separately install a composite pump adapted to the ratio. For example, in order to produce various kinds of composite fibers with various ratios of stock solutions having different properties, it was necessary to provide the composite pumps in the number corresponding to the kinds.
Therefore, the number of pumps increases, the equipment cost rises, and the handling becomes troublesome.

The present invention has been made in view of the above points, and an object of the present invention is to provide a gear pump for composite spinning in which the discharge amount ratio can be easily changed with one composite pump.

[Means for Solving the Problems]

In order to achieve this object, the compound spinning gear pump of the present invention is provided with gears axially attached to at least two drive shafts connected by exchange gears and gears rotatably fitted, respectively. It is characterized in that the shaft-mounted gear and the rotatably fitted gear mesh with each other to form independent pump chambers, and a dedicated suction port and discharge port communicate with each pump chamber.

[Action]

When the drive shaft 1 is driven, the gear 7 rotatably attached to the drive shaft 1 and the gear 10 meshing with the drive shaft 1 rotate to discharge the liquid sucked from the suction port 23 to the discharge port 25, and at the same time, to drive the drive shaft 1
The drive shaft 2 that is connected to the drive shaft via the exchange gears 3 and 4 is also driven,
The gear 8 axially mounted on the drive shaft 2 and the gear 9 meshing with the gear 8 rotate to discharge the liquid sucked from the suction port 24 to the discharge port 26.

The discharge amount ratio of the discharge liquid from the discharge ports 25 and 26 is equal to the rotation speed ratio of both drive shafts 1 and 2, and this rotation speed ratio is equal to the tooth ratio of the replacement gear. Therefore, the discharge rate of the compound gear pump can be changed by changing the tooth ratio of the replacement gear.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, reference numerals 1 and 2 denote drive shafts connected by exchange gears 3 and 4, which are rotatably fitted to gears 7 and 8 pivotally mounted by keys 5 and 6, respectively. Gears 9 and 10 are provided. The gear pair 11 consisting of the gears 7 and 10 is fitted in the hole 13 of the eye plate 12, and the gear pair 14 consisting of the gears 8 and 9 is fitted in the hole 16 of the eye plate 15 in meshing state, respectively, and the gear pair 11 The eye plates 12 and 15 provided with the space plates 17 and 14, and the side plates 18 and 19 that are in contact with the spacing plate 17 and the eye plate outer surface interposed therebetween.
Independently connected to each other with a large number of bolts 20 to form independent pump chambers 21 and 22. The side plate 19 is formed with suction ports 23, 24 communicating with the suction sides of the pump chambers 21, 22 and discharge ports 25, 26 communicating with the discharge sides of the pump chambers 21, 22.

The exchange gears 3 and 4 are detachably attached to the drive shafts 1 and 2 with the keys 27 and 28 in order to change the discharge amount ratio of the pump chambers 21 and 22. Further, the output shaft 32, the shaft coupling 33, the support plate 30 and the collar 29 on the prime mover side are detached from the side plate 18 so that the exchange gears 3 and 4 can be exchanged with other exchange gears. The bolts 31 for attaching the plate 30 to the side plate 18 can be removed.

As shown in FIGS. 1 and 3, the minimum number of exchange gears is 2, but the rotation speed ratio between drive shaft 1 and drive shaft 2 is large and the distance between the drive shafts 1 and 2 is large. When it is small, for example, as shown in FIG. 4, a large number of replacement gears 35, 37, 38, 39, 40, 41,
The drive shafts 1 and 2 may be connected by 36.

In the present embodiment, the drive shaft 1 and the output shaft 32 on the prime mover side are connected by the shaft coupling 33, but any appropriate known means can be used for the connection. For example, drive shaft 1 and output shaft 32 on the motor side
May be parallel to each other, and the space between them may be connected by a gear or other transmission means.

Assuming that the numbers of teeth of the exchange gears 3 and 4 are z ₁ and z ₂ and the numbers of rotations of the drive shafts 1 and 2 are n ₁ and n ₂ in FIG. 3, n ₁ / n ₂ = z ₂ / z ₁ or , In FIG. 4, the number of teeth of the exchange gears 35,37,38,39,40,41,36 is z ₃ , z ₄ , z ₅ , z ₆ , z ₇ , z ₈ , z ₉ , drive shafts 1, 2 Let n ₁ and n _{2 be} the rotation speeds of n ₁ / n ₂ = z ₄ × z ₆ × z ₉ / z ₃ × z ₅ × z ₇ . However, since the exchange gear 41 is an idler, it does not relate to the rotation speed ratio.

In the exchange gear system diagram shown in FIG. 4, the number of exchange gears is larger than that in FIG. 3, so that the rotation speed ratio n ₁ / n ₂ can be made fine.

In this way, by changing the number of teeth of the replacement gear and changing the number of teeth ratio, the rotation speed ratio of the drive shafts 1, 2 changes, and the pump chamber 21,
The discharge rate ratio of 22 will change.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

Since the discharge amount ratio of the compound gear pump can be changed by the exchange gear, the discharge amount ratio can be changed variously with one compound gear pump. Therefore, for example, in order to produce various kinds of composite fibers having different properties by changing the discharge rate ratio of the stock solution having different properties, one composite gear pump and the required number of replacement gears are sufficient, so the equipment cost is reduced. Can be reduced, the installation space is minimized, and
The discharge amount ratio can be changed relatively easily.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a view of an arrow A in FIG. 1, FIGS. 3 and 4 are exemplification views of an exchange gear system, and FIG. 5 is a front view of a conventional product. FIG. 6 and FIG. 6 are vertical cross-sectional views with the same portion cut away. 1,2 …… Drive shaft, 3,4,35,36,37,38,39,40,41 …… Replacement gear, 7,8,9,10 …… Gear, 21,22 …… Pump chamber, 23 ,twenty four……
Suction port, 25,26 …… Discharge port.

Claims (2)

[Scope of utility model registration request] 1. A gear (7), which is axially attached to at least two drive shafts (1), (2) connected by exchange gears, respectively.
(8) and gears (9) and (10) that are rotatably fitted, and gears (7) with both drive shafts (1) and (2) attached
(8) and the rotatably fitted gears (9), (10) mesh with each other to form independent pump chambers (21), (22), and each pump chamber (21), (22) A gear pump for composite spinning, characterized in that the suction ports (23) and (24) and the discharge ports (25) and (26) are communicated with each other. 2. A gear pump for composite spinning according to claim 1, wherein the two drive shafts (1), (2) are connected by a plurality of sets of exchange gears.