Cam Control Valve Height Adjustment Mechanism
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Solution Overview
Problem
Conventional cam control valves lack an efficient mechanism for adjusting the vertical height and contact pressure of the valve disc, leading to time-consuming zero adjustments and potential damage or leakage issues due to inaccurate positioning and force application.
Innovation Solution
A cam control valve design featuring a height adjustable screw and a seat-contact pressure adjusting mechanism, allowing for easy access and adjustment of the motor holder's height and elastic force to precisely position and press the valve disc against the valve seat, with a piston member and elastic force adjustable screw for fine-tuning the contact pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If no height adjusting mechanism is provided in conventional cam control valves, then the structure remains simple, but zero adjustment becomes time-consuming and positioning accuracy deteriorates
Solution Approach 1:
The height adjusting mechanism allows pre-adjustment of the motor holder position before operation. The adjustable screw (12) enables the motor holder (9) to be positioned at the correct height relative to the supporting frame (10) in advance, so that when the valve is installed, the zero position is already optimized, reducing on-site adjustment time and improving positioning accuracy.
2Reliability
If processing accuracy and assembling accuracy are not improved, then manufacturing costs remain low, but the valve disc may be excessively pressed against the valve seat or contact may be insufficient, causing damage or leakage
Solution Approach 1:
The elastic member (11) introduces a dynamic, adjustable force element between the motor holder (9) and the supporting frame (10). By adjusting the height of the motor holder using screw (12), the compression amount of the elastic member changes, thereby dynamically controlling the contact force between the valve disc and valve seat. This allows reliable sealing without requiring extremely tight manufacturing tolerances.
3Reliability
If the valve disc contact force is not properly controlled, then the structure remains simple, but fluid leakage occurs or the valve seat gets damaged
Solution Approach 1:
The contact force between the valve disc and valve seat is controlled by changing the compression amount of the elastic member (11). By adjusting the height of the motor holder (9) relative to the supporting frame (10) using the adjustable screw (12), the compression amount of the elastic member changes, thereby controlling the contact force parameter. This simple parameter-based control achieves reliable sealing without complex pressure control mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables quick and precise adjustment of the valve disc's height and contact pressure, reducing the time and energy required for zero adjustments and preventing damage or leakage, while ensuring accurate fluid regulation.
Implementation Method 1
an elastic member (11) which biases the motor holder (9) in a direction in which the motor holder (9) is spaced from an upper side portion (10a) of the supporting frame (10)
Implementation Method 2
a height adjustable screw (12) which supports the motor holder (9) in a state of suspension from the supporting frame (10), and adjusts a vertical height of the motor holder (9) with respect to the supporting frame (10)
Data Source
AI summary
A cam control valve includes a valve casing having a fluid passage and valve seat, a valve disc seated on the valve seat to open and close the fluid passage, a valve stem holding down the valve disc so it contacts the valve seat, a cam acting on the valve stem to hold it down, a motor rotating the cam, a motor holder holding the motor, a supporting frame fixed to the valve casing and supporting the motor holder so it moves vertically, an elastic member biasing the motor holder towards spacing from an upper side portion of the supporting frame, and height adjustable screws suspending the motor holder from the supporting frame, and adjusting a height of the motor holder with respect to the supporting frame, wherein the height adjustable screws are slidably inserted into the upper side portion of the supporting frame and screwed into the motor holder.