Mixing and self-cleaning device for mixing cement concrete and forming test piece

Abstract

The invention discloses a mixing and self-cleaning device for mixing a cement concrete and forming a test piece. The mixing and self-cleaning device for mixing the cement concrete and forming the testpiece comprises a mixing device, a lifting device, a vibrating device and an electronic platform scale, wherein a feed inlet is formed in the top part of the mixing device; a discharge hole is formedin the bottom part of the mixing device; the lifting device is arranged on the discharge hole of the mixing device; a mould and the electronic platform scale are arranged on the top part of the lifting device; a shovel plate is arranged at the free end of a stirring blade and contacts the inner wall of a mixing cylinder; and a cleaning nozzle is arranged on the top part of the mixing cylinder andcommunicates with a water tank through a water passing pipeline. The shovel plate contacts the inner wall of the mixing cylinder, so that the cement concrete on the inner wall of the stirring cylinder can be shoveled so as to be uniformly mixed, and the instrument can be conveniently cleaned; through additionally arranging a cleaning device, the automatic cleaning work of a mixer can be realized,so that not only can manpower be saved maximally, but also the test time can be effectively saved; and through arranging the electronic platform scale on an operating floor, the quality of the cementconcrete test piece can be controlled through weighing, and the standardness of the test piece is further controlled.

Description

technical field [0001] The invention relates to the field of cement concrete mixing equipment, in particular to a mixing self-cleaning device for mixing cement concrete and forming test pieces. Background technique [0002] The cement concrete test is a very important test. It involves multiple processes such as mixer loading, cement concrete mixing, test piece forming, instrument cleaning and test piece performance testing. According to JTG E30-2005 "Cement and Cement Concrete Test Regulations for Highway Engineering", cement concrete needs to go through multiple processes in the process of mixing and forming test pieces. First, the raw materials are weighed according to the regulations, and then coarse aggregates are added to the mixer in sequence. , fine aggregate and cement, start the mixer dry mix for one minute to make it even, then add half of the water, wet mix for one minute, then add the other half of the water, and mix for another two minutes. The cement concret...

AI Technical Summary

Problems solved by technology

[0003] For the above series of operating procedures, there will be the following shortcomings or deficiencies in the cement concrete test in the laboratory: First, after the cement concrete is mixed, it needs to be poured on the iron plate and then loaded into the test with a shovel. This process often takes a long time, which will lead to the variation of cement concrete components, and then cause the loss of cement concrete slump. In addition, it will also affect the test results of cement concrete strength and shrinkage performance. especially severe in summer

Second, when cement concrete is mixed, concrete will stick to the inner wall of the mixing drum and the mixing blades, which will increase the difficulty of cleaning the mixer, and more seriously, it will easily lead to uneven mixing of concrete

Third, pouring the unsedimented mixer cleaning fluid directly into the sewer will cause the sewer to be blocked

Fourth, since the cement concrete loaded into the mold is only judged by the tester's visual inspection, it may cause the size of the specimen after setting and hardening to fail to meet the specified requirements, thereby affecting the performance test results of the concrete

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