Test device for preparing concrete additive

By designing separate syringe and stirrer structures, and using stepless injection mechanism and limiting device, the problems of additive dropout and operation in existing devices are solved, achieving higher practicality and precise additive control.

CN222677919UActive Publication Date: 2025-03-28BEIJING CHENGCHENG JIAOTONG UNIV BUILDING MATERIALS CO LTD
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Patent Information

Application Number
CN202420814759.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-19
Publication Date
2025-03-28
Estimated Expiration
2034-04-19

AI Technical Summary

Technical Problem

When used in the existing test device for concrete additive preparation, vibration of the stirring mechanism will cause the additives in the syringe to fall out, and it will be inconvenient to operate and easily add excessively.

Method used

A test device including a stirrer and a bracket is designed, the syringe is separated from the stirrer, and the flow rate and release speed of the liquid are accurately controlled by a stepless injection mechanism, and the piston is driven to slide with a synchronization belt and threaded drive, and the slide chute and slide provide limits to avoid excessive extraction.

Benefits of technology

It effectively avoids the problem of additive dropout caused by vibration of the agitator, improves the practicality and stability of the device, and achieves precise control of the flow rate and release speed of the additive, making operation more convenient.

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Abstract

The utility model relates to the technical field of concrete tests, in particular to a testing device for preparing a concrete additive, which comprises a stirrer and a support, stepless injection mechanisms are respectively and rotatably mounted at the upper end part of the stirrer, each stepless injection mechanism comprises a screw rod and a rotating handle, and a synchronous belt is rotatably mounted between the screw rod and the rotating handle; the stepless injection mechanism further comprises a stand column, a piston, a sliding sleeve, an inner threaded column, a sliding groove and a sliding block, the screw rod is driven to rotate by rotating the handle through the synchronous belt, and therefore the screw rod and the inner threaded column are in threaded transmission; therefore, a downward or upward radial force is generated by the internal threaded column to drive the piston and the sliding sleeve to slide downwards in the injector and on the surface of the stand column, so that an additive sucked into the injector can be dropped into the stirrer, and the piston can be indirectly pushed by utilizing threaded transmission of the internal threaded column and the lead screw; further, stepless regulation can be realized, so that the flow and the release speed of the liquid are accurately controlled, and the operation is convenient.
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