Piston Pump Gasket Carrier for Faster Sealing Assembly
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Solution Overview
Problem
Existing piston pumps require labor-consuming manual assembly of sealing gaskets, which can be displaced during piston insertion and lack efficient guidance, leading to increased production times and potential leakage issues.
Innovation Solution
The introduction of an annular body with housing seats for the gaskets simplifies the assembly process by allowing easier insertion and centering of the gaskets, reducing the need for precise processing of the cylinder head and enabling quicker assembly and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If gaskets are manually inserted and stacked one after the other into the cylinder seat, then the gaskets can be properly positioned, but the assembly operation becomes labour-consuming and time-intensive
Solution Approach 1:
The invention divides the gasket assembly into two parts: the gaskets themselves and the annular body that houses them. The annular body acts as a pre-assembled unit containing multiple gaskets in their correct positions, which is then inserted as a single component into the cylinder. This segmentation allows gaskets to be precisely positioned during manufacturing of the annular body, while the final assembly becomes a single quick insertion operation.
Solution Approach 2:
The gaskets are pre-positioned and secured within the annular body before the annular body is inserted into the cylinder. This preliminary action of assembling the gaskets into the annular body off-site or during annular body manufacturing eliminates the need for manual insertion into the narrow cylinder space during final assembly, thereby maintaining precision while improving productivity.
2Ease of operation
If the piston is inserted through the gaskets, then the piston can be installed, but the gaskets may be displaced or lack efficient guidance
Solution Approach 1:
The annular body serves as an intermediary structure between the gaskets and the cylinder. It provides a stable housing that guides the piston's insertion path and protects the gaskets from displacement. The annular body's internal structure includes features that guide and constrain the piston, ensuring it passes through the gaskets without displacing them.
Solution Approach 2:
The gaskets are designed as flexible annular elements that can deform elastically during piston insertion and then return to their original sealing position. This flexibility allows them to accommodate the piston passage while maintaining their sealing function and positional stability, preventing permanent displacement.
3Volume of moving object
If the diameter of the piston is lower than 5 cm, then the pump size is reduced, but the operator's hand cannot easily access the housing seat for gasket assembly
Solution Approach 1:
The gasket assembly operation is extracted from the cylinder and relocated to the annular body. The annular body serves as a separate assembly platform with adequate space for manual manipulation of gaskets, which is then positioned outside the narrow cylinder space. This extraction allows workers to assemble gaskets in an accessible location and then install the complete annular body as a single unit into the compact pump.
Data Source
AI summary
A piston pump is described for pumping a liquid including a head in which at least a cylinder is disposed, a piston slidably inserted in the cylinder, a first sealing annular gasket which circumferentially sealingly contacts the piston, a second sealing annular gasket which circumferentially sealingly contacts the piston, and an annular body which circumferentially encloses the piston and is at least partially accommodated in a housing seat disposed in the head in a portion of the cylinder. The annular body includes a first housing seat in which the first sealing annular gasket is housed, a second housing seat in which the second sealing annular gasket is housed, and a third housing seat in which a third sealing annular gasket is housed, which is placed between the annular body and the housing seat of the annular body.