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Papermaking pulp sand remover

A technology for desander and pulp, applied in textiles, papermaking, fiber raw material processing, etc., can solve the problems of high cost and complex structure of desander, and achieve the effect of reducing cost, avoiding pulp loss and improving reuse quality.

Inactive Publication Date: 2015-03-25
钟立福
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The "pulp desander" is equipped with an upper slag discharge valve and a lower slag discharge valve at the same time, which makes the structure of the whole desander complicated. In addition, a control device for opening and closing the upper slag discharge valve and the lower slag discharge valve is set, resulting in high cost.

Method used

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  • Papermaking pulp sand remover

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Embodiment Construction

[0014] The present invention comprises a lower conical shell 1, the upper part of the lower conical shell is provided with a tangential feeding pulp feeding pipe 2, the pulp feeding pipe 2 communicates tangentially with the upper part of the inner cavity of the lower conical shell, and there is a pulp outlet at the top 3. There is a sand outlet 4 at the lower end. The lower conical shell is supported by uprights 8 . In practice, the upper end of the lower conical shell 1 can be connected to a cylindrical section, and the slurry feed pipe 2 is connected tangentially to the cylindrical section at the upper end of the lower conical shell, as shown in the figure. The lower conical shell 1 can also be an integral lower conical shell, and the slurry feeding pipe 2 is connected tangentially to the upper conical section of the lower conical shell.

[0015] The sand outlet 4 at the lower end of the lower conical housing 1 is connected to the auxiliary lower conical housing 5, the sand...

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Abstract

The invention discloses a papermaking pulp sand remover, and relates to papermaking devices. The papermaking pulp sand remover comprises a lower conical shell (1). A tangential feeding pulp inlet pipe (2) is arranged on the upper portion of the lower conical shell, a pulp outlet (3) is formed in the top of the lower conical shell, and a sand outlet (4) is formed in the lower end of the lower conical shell; the sand outlet in the lower end of the lower conical shell is connected with a lower auxiliary conical shell (5), a sand discharge outlet (6) is formed in the lower end of the lower auxiliary conical shell, and the sectional area of the sand discharge outlet (6) is smaller than the sectional area of the sand outlet (4) in the lower end of the lower conical shell; the lower conical shell (1) and the lower auxiliary conical shell (5) are of lower cone structures. The papermaking pulp sand remover has the advantages that the papermaking pulp sand remover is simple in structure and can run reliably, the manufacturing cost can be obviously reduced, good pulp and sand separation effects can be realized, pulp loss can be prevented, and the maintenance cost can be decreased.

Description

technical field [0001] The invention relates to a device for papermaking production, in particular to a desanding device for paper pulp. Background technique [0002] In the process of papermaking, especially the use of waste paper, it is necessary to remove the sand particles in the pulp after pulping. An existing "pulp desander" includes a lower conical shell, the upper part of the lower conical shell is provided with a tangentially fed slurry inlet pipe, the top has a pulp outlet, and the sand outlet at the lower end of the lower conical shell Connect the inlet end of the upper slag discharge valve, the outlet end of the upper slag discharge valve is connected with the inlet end of the sand settling pipe, the outlet end of the sand settling pipe is connected with the lower slag discharge valve, the pulp after pulping is cut by the upper part of the lower conical shell It enters and forms a swirling flow in the lower conical shell to separate the pulp from the sand. The p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21D5/18
CPCD21D5/18
Inventor 钟立福
Owner 钟立福
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