Telescopic Cleaning Lance for Concrete Drum Interior
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Solution Overview
Problem
Concrete drums used for mixing thick materials like concrete, mortar, or screed often have residues that harden inside, reducing the usable volume and requiring inefficient cleaning methods that miss inaccessible areas.
Innovation Solution
A cleaning lance system with an adjustable telescopic arm, nozzle device, and sealing mechanism that allows for precise delivery of cleaning liquid jets into the drum's interior, ensuring thorough cleaning and preventing material penetration into joints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a fixed-length lance is used for cleaning the concrete drum, then the device structure is simple, but the cleaning coverage is insufficient and cannot reach inaccessible areas
Solution Approach 1:
The lance is designed with a telescopic arm that can extend and retract, transforming from a fixed-length structure to a variable-length dynamic structure. This allows the nozzle to reach different positions within the drum interior, expanding the cleaning coverage area without permanently increasing the device's maximum dimensions.
Solution Approach 2:
The telescopic arm is divided into multiple nested segments that can extend and retract relative to each other. This segmentation allows the lance to achieve extended reach when needed while maintaining a compact form when retracted, resolving the contradiction between coverage area and structural complexity.
2Area of stationary object
If the lance arm is made telescopic to reach inaccessible areas, then the cleaning coverage is improved, but the risk of material penetration into joints increases
Solution Approach 1:
The telescopic arm uses nested segments where one segment is placed inside another. The sealing device is integrated into this nested structure, creating seals at the interfaces between segments. This nesting approach allows the lance to extend for coverage while the integrated sealing prevents material penetration at the joint areas.
Solution Approach 2:
The sealing device acts as an intermediary element between the telescopic segments. It is positioned at the joints to prevent thick material and cleaning fluid from penetrating into the joint spaces, thereby maintaining reliability while allowing the telescopic mechanism to function for extended coverage.
3Manufacturing precision
If manual cleaning methods are used, then the equipment complexity is low, but the cleaning thoroughness is insufficient and residues harden
Solution Approach 1:
The system uses a hydraulic jet cleaning mechanism where cleaning fluid is pressurized and delivered through the telescopic lance to the drum interior. This hydraulic approach provides high cleaning power and thoroughness that manual methods cannot achieve, while the automated telescopic positioning ensures precise delivery to all areas including inaccessible ones.
Solution Approach 2:
The system is designed to clean the drum interior automatically without requiring manual intervention. The telescopic arm can be positioned and the hydraulic jet can operate autonomously, allowing the system to service itself and maintain cleaning thoroughness without human operators entering the drum or manually reaching inaccessible areas.
4Area of stationary object
If the nozzle device is fixed in position, then the device structure is simple, but inaccessible areas cannot be cleaned
Solution Approach 1:
The nozzle device is mounted on the telescopic arm, transforming it from a fixed-position nozzle to a dynamically positionable nozzle. As the telescopic arm extends and retracts, the nozzle automatically follows, providing dynamic positioning capability that expands the accessible cleaning area without requiring separate complex positioning mechanisms for the nozzle itself.
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
The system enables thorough, automatic cleaning of concrete drums by adjusting the lance arm and nozzle to reach all areas, preventing residue hardening and maintaining the drum's volume, while the sealing device ensures the lance's functionality and prevents material penetration.
Implementation Method 1
The nozzle device (3) is designed to form at least one fluid jet (S) of cleaning fluid (F) from the cleaning lance system (1)
Implementation Method 2
The sealing device (11) has at least one sealing strip (12). The sealing strip (12) can consist partially or completely of an elastic material. The sealing strip (12) is in thick-material-tight, particularly fluid-tight, sliding contact with the other of the two lance segments (8) defining the joint (10)
Data Source
Figure 1
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AI summary
The invention relates to a cleaning lance system (1) for cleaning a concrete drum (50) from the inside, wherein the cleaning lance system (1) comprises: a supply line (2), wherein the supply line (2) is capable of carrying a cleaning fluid (F), a nozzle device (3), wherein the nozzle device (3) is connected to the supply line (2) in a fluid-conducting manner and is designed to form at least one fluid jet (S) of cleaning fluid (F) out of the cleaning lance system (1), and a lance arm (4), wherein the lance arm (4) extends from its first lance end (5) to its second lance end (6) in a longitudinal direction (L), wherein the nozzle device (3) is arranged at the second lance end (6), and wherein the lance arm (4) is designed to be length-adjustable such that the second lance end (6) together with the nozzle device (3) is adjustable relative to the first lance end (5) along the longitudinal direction (L).