Adjustment device for adjusting propeller blades of a propeller pump and a propeller pump including such a device
A technology for regulating devices and propellers, applied in pump control, non-variable pumps, machines/engines, etc., can solve problems such as shortening durability and frequent shutdowns, and achieve the effect of improving the scope of application
Inactive Publication Date: 2012-01-04
ITT MFG ENTERPRISES LLC
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- Description
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Problems solved by technology
This can be problematic because in many applications the flow can periodically become very strong, especially in applications such as underwater adventures, artificial waterfalls for paddle boarding, and other waterfall activities such as rafting, which can cause significant Large forces will act on the pump, especially on the parts of the pump such as the propeller blades, the crank or arm carrying the blade, and the connection points of the crank or arm
Therefore, the durability of the pump may be extremely shortened
Method used
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[0032]Preferred embodiments of the present invention will be disclosed below.
[0033] All directions below will refer to figure 1 The two-dimensional coordinate system shown in .
[0034] see first figure 1 , a propeller pump including the regulating device according to the present invention will be described. A propeller pump or an axial flow pump 1 includes a bearing 3 incorporated therein (see figure 2 ) of the propeller hub 2. Propeller blades 4 are mounted in respective bearings 3 and protrude from hub 2 . The direction of flow is indicated by arrow A, i.e. figure 1 The Y direction indicated by the two-dimensional coordinate system. Furthermore, the pump 1 is installed in a pump housing 9 .
[0035] now go to figure 2 , will be described in more detail figure 1 Pump 1 shown in . The adjustment mechanism 5 is slidably provided in the hub 2 so that it can move back and forth in the Y direction, that is, along the transmission shaft 7 of the pump 1 connected to ...
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The present invention relates to an adjustment device for adjusting the pitch angle of the propeller blades (4) of a propeller pump (1) and a propeller pump incorporating such a device. The adjustment device comprises adjustment means (5; 25; 35) mounted within the hub (2) arranged to be axially movable in a direction along the drive shaft (7), the adjustment means (5; 25; 35) being provided witha plurality of guide slots (6; 26a, 26b; 36) arranged at circumferential spacings around the surface; a plurality of attachment means (20) rotationally mounted in the hub (2), each being fixedly attached to a propeller blade (4) and supported by at least one guide slot (6; 26a, 26b; 36), wherein each attachment means (20) and the corresponding at least one guide slot (6; 26a, 26b; 36) are arranged to interact such that a force applied on the attachment means (20) is distributed symmetrically about an axis perpendicular to the drive shaft (7) and parallel with a rotational axis of the attachment means (20); and wherein the guide slots (6; 26a, 26b; 36) are arranged to, at an axial movement of the adjustment means (5; 25; 35), cause the attachment means (5; 25; 35) to rotate about its own rotational axis, whereby the propeller blade (4) in turn is rotated.
Description
technical field [0001] The present invention relates to a propeller pump or an axial flow pump, in particular to an adjustment device for adjusting the propeller blades of said pump. Background technique [0002] In many pump applications it is often necessary and / or necessary to vary the flow rate, for example by rotating the propeller blades of the pump around their own axis (adjusting the angle of incidence of the fluid relative to the propeller blades), i.e. adjusting the pitch of the propeller blades. Angle (pitch angle) and achieve. These adjustments are often performed manually, ie the pump is disengaged and the operator manually adjusts the paddles to obtain the desired or desired angle with respect to the direction of flow. This is time consuming and entails high costs due to operational disturbance and labor requirements. Furthermore, such manual adjustments are extremely impractical if these changes are of a recurring nature, and may not even be applicable if fl...
Claims
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IPC IPC(8): F04D15/00
CPCF04D15/0055
Inventor R·史文森
Owner ITT MFG ENTERPRISES LLC