Coating Pump Intake Valve Assembly for Fast Cleaning Access
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Solution Overview
Problem
Pneumatic pumps for coating product application systems face challenges in simplified cleaning and maintenance due to the need for multiple tools and complex dismantling procedures, especially when deposits form and the pump's screw threads come into contact with the product, making outdoor operations difficult.
Innovation Solution
A pump design featuring a suction valve with a nut and valve support that can be easily removed by unscrewing from the bottom, using non-specific tools and ensuring the nut and valve support are fixed in a non-removable manner, allowing for simplified disassembly and maintenance without exposing threads to the product.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the suction valve is securely fastened to the pump body using screw threads, then the sealing and product flow control are improved, but the disassembly and cleaning operations become complex and time-consuming
Solution Approach 1:
The suction valve is divided into multiple separable parts: a first part that remains on the pump body and a second part that can be easily removed. The valve support is also segmented into a retained portion and a removable portion. This segmentation allows the valve to maintain secure sealing when assembled while enabling simple disassembly for cleaning by removing only the second part without affecting the first part's connection to the pump body.
2Reliability
If the valve is securely fastened to the pump body, then the product flow control is improved, but the cleaning time and tool requirements increase
Solution Approach 1:
The valve and valve support are segmented into retainable and removable portions, allowing quick removal of only the cleaning-required components (second part of valve, second part of valve support) while leaving the pump body connection intact. This reduces cleaning time significantly compared to complete disassembly.
Solution Approach 2:
The second part of the valve and the second part of the valve support are extracted as separate removable components that can be easily detached for cleaning. This extraction principle allows operators to remove only the necessary parts for cleaning without dismantling the entire valve assembly or requiring multiple tools.
3Ease of repair
If the valve components are easily removable, then the maintenance operations are simplified, but the sealing reliability may be compromised
Solution Approach 1:
The valve assembly is segmented into a first part that maintains the sealing connection with the pump body and a second part that is easily removable for maintenance. The valve support is similarly segmented. This ensures that the sealing function is maintained in the retained portions while the removable portions can be easily accessed for cleaning and maintenance operations.
Data Source
Figure 1
Figure 2
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AI summary
This pump (2), for a system for applying a coating product, comprises a pump body (4) and an intake valve (6) attached to the pump body (4) and intended to be connected to a source of coating product, the intake valve (6) comprising a valve body (8, 10) and a valve shutter (12) The valve body (8, 10) comprises a first component (8) secured to the pump body (4), and a second component (10) screwed to the first component (8), said second component (10) comprises a valve-shutter support (14) situated radially toward the inside of the first component (8) and forming a seat (142) of the valve (6) intended to collaborate with the valve shutter (12) in order to establish sealing, said second component (10) also comprising a nut (16), attached to the valve-shutter support (14), extending radially around an end part (80) of the first component (8), this end part (80) having an external screw thread (82) collaborating with an internal screw thread (160) of the nut (16), and when the nut (16) has been unscrewed from the first component (8), the second component (10) and the valve shutter (12) can be extracted from the first component (8).