Nozzle

Abstract

The invention relates to a sprayer and relates to the technical field of cement industry manufacturing. The sprayer mainly aims at enabling the water flow pressure in the sprayer to be kept consistent with the water pressure in an external water pipe, so that the water flow angle is fixed, water is prevented from splashing outwards, and the errors of water sieving tests are reduced. According to the technical scheme which is mainly adopted, the sprayer comprises a nozzle piece. One end of the nozzle piece is provided with a liquid inlet hole. The liquid inlet hole comprises a hole wall and a bottom face connected with the hole wall. The bottom face of the liquid inlet hole is a plane and is perpendicular to the hole wall of the liquid inlet hole. The liquid inlet hole is configured to be with the same hole diameter from the opening of the liquid inlet hole to the bottom face of the liquid inlet hole. The hole diameter of the liquid inlet hole is equal to the inner diameter of the external water pipe. The end, at the opening of the liquid inlet hole, of the nozzle piece is used for being connected with the external water pipe so that the interior of the water inlet hole can be communicated with the external water pipe. The bottom face of the liquid inlet hole is provided with liquid outlet holes which are communicated.

Description

technical field [0001] The invention relates to the technical field of cement industry manufacturing, in particular to a nozzle. Background technique [0002] In recent years, with the development of cement grinding process equipment, more and more types of admixtures are used in cement, and the fineness of cement and admixtures for cement is also getting finer. At present, the fineness of cement and cement admixtures is usually detected by the sieve analysis method (GB / T1345). The sieve analysis methods mainly include negative pressure sieve analysis method and water sieve method. The sieve analysis method can react the content of particles larger than the sieve hole of the material. [0003] Limestone, cement and other materials are prone to agglomeration due to high viscosity and electrification after grinding. If the negative pressure sieve analysis method is used to measure the sieve residue, it is easy to have a paste sieve phenomenon, which will affect the test resu...

AI Technical Summary

Problems solved by technology

[0006] In the process of realizing the above technical solution, the inventor found at least the following problems in the prior art: the inner diameter of the hose 102 is smaller than the inner diameter of the external water pipe, when the nozzle 101 is connected to the external water pipe through the hose 102, the The water flow will become thinner after passing through the hose 102, then gradually become thicker after flowing through the inner cavity of the nozzle 101, and finally flow out from the liquid outlet hole on the nozzle 101

During this whole process, since the inner diameters of the hose 102 and the inner cavity of the nozzle 101 are constantly changing, the pressure of the water flow is always changing, which leads to inaccurate test results and even large errors.

[0007] In addition, because the hose 102 is not fixed, it is easy to shake after receiving an external force, resulting in frequent changes in the angle and height of the nozzle, thereby further increasing the error of the test

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